:root {
  --paper: #F2F0FF;
  --ink: #16123F;
  --card: #FFFFFF;
  --blue: #3D3BFF;
  --yellow: #FFD23F;
  --mint: #3DF2B0;
  --coral: #FF6B57;
  --dark: #16123F;
  --display: 'Bricolage Grotesque', 'Trebuchet MS', 'Arial Black', sans-serif;
  --body: 'DM Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --line: 3px solid var(--ink);
  --pop: 6px 6px 0 var(--ink);
  box-sizing: border-box;
  padding-top: env(safe-area-inset-top, 0px);
  padding-bottom: env(safe-area-inset-bottom, 0px);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) { --paper: #16123F; --ink: #F2F0FF; --card: #221D5C; }
}
:root[data-theme="dark"] { --paper: #16123F; --ink: #F2F0FF; --card: #221D5C; }

html { scroll-padding-top: calc(env(safe-area-inset-top, 0px) + 84px); }
*, *::before, *::after { box-sizing: border-box; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--body); font-size: 1.05rem; line-height: 1.55; overflow-x: hidden; }
img, svg { max-width: 100%; }
a { color: inherit; }
h1, h2, h3 { font-family: var(--display); line-height: 1; margin: 0; letter-spacing: -0.02em; }
p { margin: 0; }
:focus-visible { outline: 4px solid var(--blue); outline-offset: 3px; }
.wrap { width: min(1180px, 100% - 40px); margin-inline: auto; }
.lenis, .lenis body { height: auto; }

/* Buttons */
.btn { display: inline-block; font: 700 1rem var(--body); text-decoration: none; padding: 14px 26px; border: var(--line); border-radius: 999px; background: var(--yellow); color: var(--dark); box-shadow: 4px 4px 0 var(--ink); cursor: pointer; transition: transform .15s, box-shadow .15s; }
.btn:hover { transform: translate(-2px, -2px); box-shadow: 6px 6px 0 var(--ink); }
.btn:active { transform: translate(3px, 3px); box-shadow: 1px 1px 0 var(--ink); }
.btn.blue { background: var(--blue); color: #fff; }
.btn.ghost { background: var(--card); color: var(--ink); }

/* Nav */
.nav { position: sticky; top: calc(env(safe-area-inset-top, 0px) + 12px); z-index: 50; width: min(1180px, 100% - 24px); margin: 12px auto 0; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 10px 12px 10px 22px; background: var(--card); border: var(--line); border-radius: 999px; box-shadow: 4px 4px 0 var(--ink); }
.logo { font: 800 1.35rem var(--display); text-decoration: none; letter-spacing: -0.03em; }
.logo b { color: var(--blue); }
.nav ul { display: flex; gap: 26px; list-style: none; margin: 0; padding: 0; font-weight: 500; }
.nav ul a { text-decoration: none; }
.nav ul a:hover { text-decoration: underline; text-decoration-thickness: 3px; text-underline-offset: 5px; text-decoration-color: var(--coral); }
.nav .btn { padding: 10px 20px; box-shadow: 3px 3px 0 var(--ink); }
/* Auth area in the nav (js/auth.js toggles [data-guest] / [data-user]); hidden until the session is known to avoid a flash */
.nav-auth { display: flex; align-items: center; gap: 14px; flex-shrink: 0; }
.nav-auth[data-state="loading"] { visibility: hidden; }
.nav-auth [hidden] { display: none !important; }
.nav-login, .nav-user { font-weight: 700; text-decoration: none; white-space: nowrap; }
.nav-login:hover, .nav-user:hover { text-decoration: underline; text-decoration-thickness: 3px; text-underline-offset: 5px; text-decoration-color: var(--coral); }
.nav-user { max-width: 14ch; overflow: hidden; text-overflow: ellipsis; }
@media (max-width: 1080px) and (min-width: 761px) { .nav ul { gap: 16px; font-size: .95rem; } }
@media (max-width: 420px) {
  .nav { padding-left: 16px; gap: 10px; }
  .logo { font-size: 1.15rem; }
  .nav-auth { gap: 10px; }
  .nav .btn { padding: 8px 14px; font-size: .9rem; }
  .nav-user { max-width: 9ch; }
}
/* Very narrow phones: keep the register button; login stays one tap away on register.html ("Hisobingiz bormi? Kirish") */
@media (max-width: 360px) { .nav-auth .nav-login { display: none; } }
@media (max-width: 760px) { .nav ul { display: none; } }

/* Hero */
.hero { padding: 56px 0 72px; }
.hero .wrap { display: grid; grid-template-columns: 1.15fr .85fr; gap: 40px; align-items: center; }
.hero h1 { font-size: clamp(3rem, 8.4vw, 6.6rem); font-weight: 800; text-shadow: 4px 4px 0 var(--blue); }
.hero h1 .ln { display: block; overflow: hidden; padding-bottom: .08em; }
.hero h1 .ln > span { display: block; }
.hero .lead { max-width: 30rem; margin: 28px 0 34px; font-size: 1.2rem; }
.hero .cta { display: flex; flex-wrap: wrap; gap: 14px; }
.stage { position: relative; aspect-ratio: 1; border: var(--line); border-radius: 44px; background: var(--blue); box-shadow: 10px 10px 0 var(--ink); overflow: hidden; display: grid; place-items: center;
  background-image: linear-gradient(rgba(255,255,255,.14) 2px, transparent 2px), linear-gradient(90deg, rgba(255,255,255,.14) 2px, transparent 2px); background-size: 44px 44px; }
.stage .gear { position: absolute; width: 74%; right: -18%; top: -14%; opacity: .5; }
/* Astronaut (canvas frame sequence, see mascot.js). Frames are 684x678; the legs run off the bottom, so fade them out. */
.stage .astro, .stage .astro-poster { position: absolute; left: 50%; bottom: 0; width: 92%; height: auto; aspect-ratio: 684 / 678; transform: translateX(-50%); z-index: 2; }
.astro, .astro-poster, .astro-fly { -webkit-mask-image: linear-gradient(#000 80%, transparent 99%); mask-image: linear-gradient(#000 80%, transparent 99%); }
.astro-fly { position: fixed; left: 0; top: 0; z-index: 40; height: auto; aspect-ratio: 684 / 678; transform-origin: 0 0; pointer-events: none; visibility: hidden; will-change: transform, opacity; }
.astro-dock { position: fixed; right: calc(16px + env(safe-area-inset-right, 0px)); bottom: env(safe-area-inset-bottom, 0px); width: min(26vw, 300px, 38vh); aspect-ratio: 684 / 678; transform: translateY(12%); visibility: hidden; pointer-events: none; }
@media (max-width: 760px) { .astro-dock { width: min(40vw, 200px); } }
.stage .tag { position: absolute; left: 18px; bottom: 18px; background: var(--yellow); color: var(--dark); border: var(--line); border-radius: 999px; padding: 8px 16px; font-weight: 700; transform: rotate(-4deg); z-index: 3; }
@media (max-width: 860px) { .hero .wrap { grid-template-columns: 1fr; } .stage { max-width: 460px; } }

/* Marquee */
.marquee { background: var(--yellow); color: var(--dark); border-block: var(--line); overflow: hidden; transform: rotate(-1.2deg); margin: 10px -20px; }
.marquee div { display: flex; width: max-content; animation: slide 26s linear infinite; }
.marquee span { font: 800 clamp(1.4rem, 3vw, 2.2rem) var(--display); padding: 14px 26px; white-space: nowrap; }
@keyframes slide { to { transform: translateX(-50%); } }

/* Sections */
section { padding: 96px 0; }
.title { font-size: clamp(2.2rem, 5vw, 3.8rem); font-weight: 800; max-width: 16ch; }
.sub { margin-top: 16px; max-width: 34rem; }

/* About / stats */
.about .wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.stats { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.stat { background: var(--card); border: var(--line); border-radius: 28px; padding: 24px; box-shadow: var(--pop); }
.stat:nth-child(2) { background: var(--mint); color: var(--dark); transform: rotate(1.5deg); }
.stat:nth-child(3) { background: var(--coral); color: var(--dark); transform: rotate(-1.5deg); }
.stat strong { display: block; font: 800 clamp(2.4rem, 5vw, 3.6rem) var(--display); }
.stat strong.txt { font-size: clamp(1.5rem, 3.2vw, 2.4rem); line-height: 1.05; margin-bottom: 6px; }
@media (max-width: 860px) { .about .wrap { grid-template-columns: 1fr; } }
@media (max-width: 420px) { .stats { grid-template-columns: 1fr; } }

/* "Coming soon" badge (level cards, step 3, simulator) */
.soon { display: inline-block; background: #fff; color: var(--dark); border: 2px solid var(--dark); border-radius: 999px; padding: 2px 12px; font: 700 .85rem/1.5 var(--body); letter-spacing: 0; vertical-align: middle; white-space: nowrap; }
.badges { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }

/* Programs */
.programs .head { display: flex; justify-content: space-between; align-items: flex-end; gap: 20px; flex-wrap: wrap; }
.programs .arm { display: block; width: 220px; margin-right: 20px; }
.programs .arm img { display: block; width: 100%; height: auto; animation: float 5s ease-in-out infinite; }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-5px); } }
@media (max-width: 760px) { .programs .arm { width: 140px; } }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 44px; }
.card { border: var(--line); border-radius: 32px; padding: 30px; color: var(--dark); box-shadow: var(--pop); display: flex; flex-direction: column; gap: 14px; }
.card:nth-child(1) { background: var(--yellow); }
.card:nth-child(2) { background: var(--mint); }
.card:nth-child(3) { background: var(--coral); }
.card .age { align-self: flex-start; background: var(--dark); color: #fff; border-radius: 999px; padding: 4px 14px; font-weight: 700; font-size: .9rem; }
.card h3 { font-size: 2rem; font-weight: 800; }
.card ul { margin: 0; padding-left: 1.1rem; }
.card li { margin-bottom: 6px; }
.card a { margin-top: auto; font-weight: 700; text-underline-offset: 4px; text-decoration-thickness: 3px; }
@media (max-width: 900px) { .cards { grid-template-columns: 1fr; } }

/* How it works */
.how .wrap { display: grid; grid-template-columns: .8fr 1.2fr; gap: 56px; }
.how .side { position: sticky; top: calc(env(safe-area-inset-top, 0px) + 110px); align-self: start; }
/* Exploded rover: parts are positioned in % of the wrapper (the exploded layout, so nothing shifts while it assembles).
   --dy is each part's assembled offset in % of its own height; main.js scrubs translateY to it. */
.rover { position: relative; width: 260px; aspect-ratio: 572 / 930; margin-top: 28px; }
.rover-part { position: absolute; height: auto; will-change: transform; }
.rover.is-built .rover-light { animation: rover-light 2.4s ease-in-out infinite; }
@keyframes rover-light { 0%, 100% { opacity: .35; filter: brightness(1); } 50% { opacity: 1; filter: brightness(1.35) drop-shadow(0 0 3px var(--mint)); } }
.rover-light { opacity: 0; }
@media (max-width: 860px) { .rover { width: 180px; margin-top: 20px; } }
@media (prefers-reduced-motion: reduce) { .rover-part { transform: translateY(var(--dy)); } }
.steps { position: relative; padding-left: 56px; }
.rail { position: absolute; left: 17px; top: 8px; bottom: 8px; width: 6px; background: color-mix(in srgb, var(--ink) 15%, transparent); border-radius: 6px; }
.rail i { display: block; width: 100%; height: 100%; background: var(--blue); border-radius: 6px; transform: scaleY(0); transform-origin: top; }
.step { position: relative; margin-bottom: 44px; }
.step::before { content: attr(data-n); position: absolute; left: -56px; top: -2px; width: 40px; height: 40px; border-radius: 50%; background: var(--yellow); color: var(--dark); border: var(--line); display: grid; place-items: center; font: 800 1.1rem var(--display); }
.step h3 { font-size: 1.7rem; margin-bottom: 8px; }
@media (max-width: 860px) { .how .wrap { grid-template-columns: 1fr; } .how .side { position: static; } }

/* Projects */
.row { display: flex; gap: 22px; overflow-x: auto; padding: 28px 4px 34px; margin-top: 10px; scroll-snap-type: x mandatory; }
.proj { flex: 0 0 min(320px, 80%); scroll-snap-align: start; background: var(--card); border: var(--line); border-radius: 28px; overflow: hidden; box-shadow: var(--pop); }
.proj .ph { aspect-ratio: 4 / 3; display: grid; place-items: center; font: 800 1.1rem var(--display); color: var(--dark); border-bottom: var(--line);
  background-image: repeating-linear-gradient(45deg, rgba(22,18,63,.09) 0 12px, transparent 12px 24px); }
.proj:nth-child(1) .ph { background-color: var(--mint); }
.proj:nth-child(2) .ph { background-color: var(--yellow); }
.proj:nth-child(3) .ph { background-color: var(--coral); }
.proj:nth-child(4) .ph { background-color: #B9B6FF; }
.proj div:last-child { padding: 18px 20px 22px; }
.proj h3 { font-size: 1.35rem; margin-bottom: 4px; }

/* Simulator preview (static mock-up) */
.sim .wrap { display: grid; grid-template-columns: .85fr 1.15fr; gap: 48px; align-items: center; }
.sim .soon { margin-bottom: 16px; }
.sim-panel { background: var(--card); border: var(--line); border-radius: 28px; box-shadow: var(--pop); overflow: hidden; }
.sim-bar { display: flex; align-items: center; gap: 7px; padding: 12px 18px; border-bottom: var(--line); font: 500 .85rem var(--body); }
.sim-bar i { width: 12px; height: 12px; border-radius: 50%; border: 2px solid var(--ink); }
.sim-bar i:nth-child(1) { background: var(--coral); }
.sim-bar i:nth-child(2) { background: var(--yellow); }
.sim-bar i:nth-child(3) { background: var(--mint); }
.sim-bar span { margin-left: 8px; opacity: .75; }
.sim-body { display: grid; grid-template-columns: 1.1fr .9fr; }
.sim-board { display: block; width: 100%; height: auto; padding: 14px; background-color: color-mix(in srgb, var(--blue) 8%, var(--card));
  background-image: radial-gradient(color-mix(in srgb, var(--ink) 14%, transparent) 1px, transparent 1.5px); background-size: 16px 16px; }
.sim-board .bb { fill: #F7F6FF; stroke: var(--dark); stroke-width: 3; }
.sim-board .hole { fill: #B9B6FF; }
.sim-board .bb-gap { stroke: #D9D7FF; stroke-width: 6; }
.sim-board .mcu { fill: #1F8A8A; stroke: var(--dark); stroke-width: 3; }
.sim-board .pins { fill: var(--dark); }
.sim-board .chip { fill: var(--dark); }
.sim-board .chip-label { fill: #fff; font: 700 12px var(--body); text-anchor: middle; letter-spacing: .08em; }
.sim-board .pin-label { fill: #fff; font: 700 10px var(--body); }
.sim-board .wire { fill: none; stroke-width: 5; stroke-linecap: round; }
.sim-board .w1 { stroke: var(--coral); }
.sim-board .w2 { stroke: var(--dark); }
.sim-board .leg { stroke: #8A8AA0; stroke-width: 3; stroke-linecap: round; }
.sim-board .res { fill: #E8C38A; stroke: var(--dark); stroke-width: 2; }
.sim-board .band { fill: var(--dark); }
.sim-board .led { fill: var(--coral); stroke: var(--dark); stroke-width: 2.5; }
.sim-code { margin: 0; padding: 18px 20px; background: var(--dark); color: #E6E4FF; font: 500 .82rem/1.6 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; overflow-x: auto; border-left: var(--line); }
.sim-code .c { color: #9C98D6; }
.sim-code .k { color: var(--mint); }
.sim-code .n { color: var(--yellow); }
@media (max-width: 860px) { .sim .wrap { grid-template-columns: 1fr; } }
@media (max-width: 560px), (min-width: 861px) and (max-width: 1000px) { .sim-body { grid-template-columns: 1fr; } .sim-code { border-left: 0; border-top: var(--line); } }

/* Sign up */
.join { background: var(--blue); color: #fff; border-block: var(--line); position: relative; overflow: hidden; }
.join .wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.join .title { color: #fff; }
/* Ticket robot: GSAP bounces the <picture> on submit; the CSS hover (float + slight tilt) runs on the <img> so they don't clash */
.join .ticket-bot { display: block; width: min(300px, 100%); margin-top: 30px; }
.join .ticket-bot img { display: block; width: 100%; height: auto; transform-origin: 50% 85%; animation: ticket-hover 4s ease-in-out infinite; }
@keyframes ticket-hover { 0%, 100% { transform: translateY(0) rotate(-1deg); } 50% { transform: translateY(-5px) rotate(1deg); } }
@media (max-width: 860px) { .join .ticket-bot { width: 200px; margin-top: 24px; } }
.form { background: var(--paper); color: var(--ink); border: var(--line); border-radius: 32px; padding: 30px; box-shadow: 8px 8px 0 var(--dark); display: grid; gap: 16px; }
.form label { display: grid; gap: 6px; font-weight: 700; font-size: .95rem; }
.form input, .form select { font: 500 1rem var(--body); padding: 13px 16px; border: var(--line); border-radius: 16px; background: var(--card); color: var(--ink); width: 100%; }
.form .btn { justify-self: start; }
.form-note { font-size: .9rem; opacity: .8; }
@media (max-width: 860px) { .join .wrap { grid-template-columns: 1fr; } }

/* Footer: always dark navy. It sets its own ink/card tokens, so borders, offset shadows and .btn get the dark look in both themes. */
.site-foot { --ink: #F2F0FF; --card: #221D5C; --line: 3px solid var(--ink); --pop: 6px 6px 0 var(--ink); --muted: rgba(242, 240, 255, .74);
  background: var(--dark); color: var(--ink); border-top: var(--line); padding: 64px env(safe-area-inset-right, 0px) 0 env(safe-area-inset-left, 0px);
  /* :root pads the bottom safe area; pull the footer over it so the navy reaches the screen edge */
  margin-bottom: calc(-1 * env(safe-area-inset-bottom, 0px)); }
.site-foot :focus-visible { outline-color: var(--yellow); }
.foot-grid { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1fr) 250px; gap: 40px 32px; align-items: start; }
.foot-brand .logo { font-size: 2.2rem; }
.foot-tagline { font-weight: 700; margin: 10px 0 12px; }
.foot-brand p:not(.foot-tagline) { color: var(--muted); font-size: .95rem; }
.foot-brand .foot-note { margin-top: 14px; font-size: .85rem; }
/* Survey button: purple-to-blue gradient pill, icon chip on the left, arrow on the right */
.foot-survey { display: inline-flex; align-items: center; gap: 10px; margin-top: 22px; padding: 8px 16px 8px 8px; background: linear-gradient(90deg, #8A3FFC, var(--blue)); color: #fff; border: var(--line); border-radius: 999px;
  font-weight: 700; font-size: .9rem; white-space: nowrap; text-decoration: none; box-shadow: 4px 4px 0 var(--ink); transition: transform .15s, box-shadow .15s; }
.foot-survey:hover { transform: translate(-2px, -2px); box-shadow: 6px 6px 0 var(--ink); }
.foot-survey svg { flex: none; width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; transition: transform .15s; }
.foot-survey svg:first-child { width: 32px; height: 32px; padding: 6px; background: rgba(255, 255, 255, .2); border-radius: 50%; }
.foot-survey:hover svg:last-child { transform: translateX(3px); }
.foot-col { --acc: var(--yellow); }
.foot-col.is-mint { --acc: var(--mint); }
.foot-col.is-coral { --acc: var(--coral); }
.foot-col h2 { font-size: 1.2rem; font-weight: 800; margin-bottom: 20px; }
.foot-col h2::after { content: ''; display: block; width: 40px; height: 5px; margin-top: 10px; border-radius: 3px; background: var(--acc); }
.foot-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.foot-list a, .foot-row { display: flex; align-items: center; gap: 12px; color: var(--muted); text-decoration: none; font-weight: 500; }
.foot-list svg, .info-card svg { flex: none; width: 36px; height: 36px; padding: 7px; background: var(--card); color: var(--acc); border: 2px solid var(--ink); border-radius: 11px;
  fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; transition: transform .15s, box-shadow .15s; }
.foot-list a:hover { color: var(--ink); }
.foot-list a:hover svg { transform: translate(-2px, -2px); box-shadow: 3px 3px 0 var(--acc); }
.foot-row > span { display: grid; color: var(--ink); font-weight: 700; line-height: 1.3; }
.foot-val { color: var(--muted); font-weight: 500; font-size: .88rem; }
a.foot-val { text-decoration: underline; text-underline-offset: 3px; }
a.foot-val:hover { color: var(--ink); }

/* CTA card: hero-style yellow tag as a speech bubble, the waving astronaut, a help pill */
.foot-cta { display: flex; flex-direction: column; align-items: center; background: var(--card); border: var(--line); border-radius: 28px; box-shadow: var(--pop); padding: 22px 18px 18px; }
.foot-cta .tag { position: relative; background: var(--yellow); color: var(--dark); border: var(--line); border-radius: 999px; padding: 8px 16px; font-weight: 700; transform: rotate(-4deg); z-index: 1; }
.foot-cta .tag::after { content: ''; position: absolute; left: 50%; bottom: -9px; width: 14px; height: 14px; margin-left: -7px; background: var(--yellow); border: var(--line); border-width: 0 3px 3px 0; transform: rotate(45deg); }
/* Waving astronaut: the image's bottom is cut flush with the line above the pill. overflow: hidden clips it there, so the slide-up
   (on the picture) and the float (on the img, 0 to +5px, never above rest) both disappear behind that edge instead of opening a gap. */
.peek { width: calc(100% + 36px); margin: 10px -18px 0; display: flex; justify-content: center; overflow: hidden; border-bottom: var(--line); pointer-events: none; }
.peek picture, .peek img { display: block; }
.peek img { width: 220px; height: auto; }
.peek.is-up img { animation: peek-float 4s ease-in-out infinite; }
@keyframes peek-float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(5px); } }
.foot-help { display: flex; align-self: stretch; align-items: center; gap: 8px; margin-top: 16px; background: var(--mint); color: var(--dark); border: var(--line); border-radius: 999px; padding: 10px 14px 10px 12px; font-weight: 700; font-size: .88rem; line-height: 1.3; text-decoration: none;
  box-shadow: 4px 4px 0 var(--ink); transition: transform .15s, box-shadow .15s; }
.foot-help:hover { transform: translate(-2px, -2px); box-shadow: 6px 6px 0 var(--ink); }
.foot-help svg { flex: none; width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

/* Contact details: full-width row of cards under the columns */
.foot-info { --acc: var(--coral); margin-top: 48px; padding: 0; }
.foot-info h2 { font-size: 1.2rem; font-weight: 800; margin-bottom: 20px; }
.foot-info h2::after { content: ""; display: block; width: 40px; height: 5px; margin-top: 10px; border-radius: 3px; background: var(--acc); }
.foot-info ul { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.info-card { display: flex; align-items: center; gap: 14px; padding: 16px 18px; background: var(--card); border: var(--line); border-radius: 20px; box-shadow: 5px 5px 0 var(--ink); }
.info-card svg { width: 44px; height: 44px; padding: 9px; }
.info-card > span { display: grid; font-weight: 700; line-height: 1.3; }

/* Bottom bar */
.foot-bar { margin-top: 56px; border-top: var(--line); padding: 20px 0 calc(20px + env(safe-area-inset-bottom, 0px)); }
.foot-bar .wrap { display: grid; grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr); align-items: center; gap: 18px 28px; }
.foot-mark { display: flex; align-items: center; gap: 12px; }
.foot-gear { flex: none; width: 42px; height: 42px; padding: 7px; background: var(--blue); border: var(--line); border-radius: 12px; }
.foot-mark span { display: grid; color: var(--muted); font-size: .85rem; line-height: 1.3; }
.foot-mark b { font: 800 1.15rem var(--display); color: var(--ink); letter-spacing: -0.02em; }
.foot-copy { text-align: center; color: var(--muted); font-size: .88rem; }
.foot-quote { font: 700 1rem var(--display); color: var(--ink); margin-bottom: 4px; }
.foot-legal { display: grid; grid-template-columns: auto auto; justify-content: end; justify-items: end; align-items: center; gap: 6px 18px; color: var(--muted); font-size: .88rem; }
.foot-legal .soon { font-size: .68rem; padding: 0 7px; margin-left: 4px; }
.foot-top { grid-column: 2; grid-row: 1 / 3; display: grid; place-items: center; width: 48px; height: 48px; padding: 0; border-radius: 50%; }
.foot-top svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 2.6; stroke-linecap: round; stroke-linejoin: round; }

@media (max-width: 1080px) {
  .foot-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .foot-brand { grid-column: 1 / 3; }
  .foot-cta { grid-column: 3; }
}
@media (max-width: 760px) {
  .site-foot { padding-top: 48px; }
  .foot-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 36px 24px; }
  .foot-brand { grid-column: 1 / -1; }
  .foot-cta { grid-column: 1 / -1; grid-row: auto; justify-self: center; width: min(100%, 320px); }
  .peek img { width: 170px; }
  .foot-info { margin-top: 40px; }
  .foot-info ul { grid-template-columns: 1fr; gap: 16px; }
  .foot-bar { margin-top: 44px; }
  .foot-bar .wrap { grid-template-columns: 1fr; justify-items: center; text-align: center; }
  .foot-legal { justify-content: center; justify-items: center; }
}
@media (max-width: 520px) { .foot-grid { grid-template-columns: 1fr; } }

/* Survey page (survey.html, js/survey.js): role picker, multi-step form, thank-you state */
.survey { padding: 48px 0 96px; --danger: #B42318; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .survey { --danger: #FF9A8B; } :root:not([data-theme="light"]) .survey :focus-visible { outline-color: var(--yellow); } }
:root[data-theme="dark"] .survey { --danger: #FF9A8B; }
:root[data-theme="dark"] .survey :focus-visible { outline-color: var(--yellow); }
.sv-card { max-width: 780px; margin-inline: auto; background: var(--card); color: var(--ink); border: var(--line); border-radius: 32px; padding: clamp(22px, 4vw, 40px); box-shadow: 8px 8px 0 var(--ink); scroll-margin-top: calc(env(safe-area-inset-top, 0px) + 96px); }
.sv-title { font-size: clamp(2rem, 4.4vw, 3rem); font-weight: 800; margin-top: 14px; }
.sv-title:focus, .sv-step-title:focus { outline: none; } /* focused by script only, to announce the new state */
.sv-sub { margin-top: 12px; max-width: 34rem; }
.sv-roles { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; margin-top: 28px; }
.sv-role { display: grid; justify-items: start; gap: 10px; text-align: left; padding: 22px; font: inherit; color: var(--ink); background: var(--paper); border: var(--line); border-radius: 24px; box-shadow: 5px 5px 0 var(--ink); cursor: pointer; transition: transform .15s, box-shadow .15s; }
.sv-role:hover { transform: translate(-2px, -2px); box-shadow: 7px 7px 0 var(--ink); }
.sv-role:active { transform: translate(3px, 3px); box-shadow: 1px 1px 0 var(--ink); }
.sv-role svg { width: 58px; height: 58px; padding: 12px; background: var(--yellow); color: var(--dark); border: var(--line); border-radius: 18px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.sv-role.is-teacher svg { background: var(--mint); }
.sv-role strong { font: 800 1.55rem/1.1 var(--display); letter-spacing: -0.02em; }
.sv-role span { font-size: .95rem; opacity: .8; }
.sv-back { font: 700 .95rem var(--body); color: var(--ink); background: none; border: 0; padding: 6px 0; cursor: pointer; text-decoration: underline; text-underline-offset: 4px; text-decoration-thickness: 2px; }
.sv-form-title { font: 800 clamp(1.1rem, 2.4vw, 1.4rem)/1.3 var(--display); letter-spacing: -0.01em; margin-top: 10px; }
.sv-progress { margin-top: 22px; }
.sv-progress-row { display: flex; justify-content: space-between; gap: 12px; font-weight: 700; font-size: .9rem; margin-bottom: 8px; }
.sv-bar { height: 16px; background: var(--paper); border: var(--line); border-radius: 999px; overflow: hidden; }
.sv-bar i { display: block; height: 100%; width: 0; background: var(--blue); transition: width .3s ease; }
.sv-step { display: grid; gap: 28px; margin-top: 28px; }
.sv-step[hidden] { display: none; }
.sv-step-title { font-size: 1.5rem; font-weight: 800; }
.sv-note { margin-top: -16px; font-size: .92rem; opacity: .8; }
.sv-q { min-width: 0; margin: 0; padding: 0; border: 0; display: grid; gap: 12px; }
.sv-q legend { display: flex; gap: 12px; padding: 0; margin-bottom: 12px; font-weight: 700; line-height: 1.4; }
.sv-num { flex: none; display: grid; place-items: center; width: 30px; height: 30px; background: var(--yellow); color: var(--dark); border: 2px solid var(--ink); border-radius: 50%; font: 800 .9rem var(--display); }
.sv-hint { display: block; margin-top: 2px; font-weight: 500; font-size: .86rem; opacity: .75; }
.sv-opts { display: grid; gap: 10px; }
.sv-opts.is-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.sv-opts.is-scale { grid-template-columns: repeat(auto-fill, minmax(56px, 1fr)); max-width: 340px; }
.sv-opt { display: flex; align-items: center; gap: 12px; padding: 12px 14px; background: var(--paper); border: 2px solid var(--ink); border-radius: 16px; line-height: 1.35; cursor: pointer; transition: transform .12s, box-shadow .12s; }
.sv-opt:hover { transform: translate(-1px, -1px); box-shadow: 3px 3px 0 var(--ink); }
.sv-opt input { appearance: none; flex: none; width: 20px; height: 20px; margin: 0; background: var(--card); border: 2px solid var(--ink); border-radius: 50%; cursor: pointer; }
.sv-opt input[type="checkbox"] { border-radius: 6px; }
.sv-opt input:checked { background: var(--blue); box-shadow: inset 0 0 0 3px var(--card); }
.sv-opt input:focus-visible { outline: none; }
.sv-opt:has(input:focus-visible) { outline: 4px solid var(--blue); outline-offset: 2px; }
.sv-opt:has(input:checked) { background: color-mix(in srgb, var(--yellow) 45%, var(--card)); box-shadow: 3px 3px 0 var(--ink); font-weight: 700; }
.sv-opts.is-scale .sv-opt { position: relative; justify-content: center; padding: 12px 0; font: 800 1.15rem var(--display); }
.sv-opts.is-scale input { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0; }
.sv-q.is-invalid .sv-opt { border-color: var(--danger); }
.sv-extra { display: grid; gap: 6px; }
.sv-extra[hidden] { display: none; }
.sv-extra label { font-weight: 700; font-size: .95rem; }
.survey input[type="text"], .survey input[type="tel"], .survey textarea { width: 100%; font: 500 1rem var(--body); padding: 13px 16px; color: var(--ink); background: var(--paper); border: var(--line); border-radius: 16px; }
.survey textarea { resize: vertical; min-height: 92px; }
.survey [aria-invalid="true"] { border-color: var(--danger); }
.sv-form .form-msg { margin-top: 24px; }
.sv-nav { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.sv-nav .btn { min-width: 150px; text-align: center; }
.sv-nav .btn:not(.ghost) { margin-left: auto; }
.sv-nav [hidden] { display: none; }
.sv-done { display: grid; justify-items: center; text-align: center; }
.sv-done[hidden] { display: none; }
.sv-done img { display: block; width: min(240px, 70vw); height: auto; animation: ticket-hover 4s ease-in-out infinite; }
.sv-done .sv-sub { margin-inline: auto; }
.sv-done .btn { margin-top: 26px; }
@media (max-width: 560px) {
  .survey { padding: 28px 0 64px; }
  .sv-card { border-radius: 26px; box-shadow: 6px 6px 0 var(--ink); }
  .sv-roles, .sv-opts.is-grid { grid-template-columns: 1fr; }
  .sv-role { grid-template-columns: auto 1fr; align-items: center; column-gap: 14px; padding: 16px; }
  .sv-role svg { grid-row: span 2; width: 50px; height: 50px; padding: 10px; }
  .sv-nav .btn { flex: 1; min-width: 0; }
}

/* Auth pages (register, login, forgot, reset): form card + mascot panel */
.auth { padding: 48px 0 80px; --danger: #B42318; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .auth { --danger: #FF9A8B; } }
:root[data-theme="dark"] .auth { --danger: #FF9A8B; }
.auth .wrap { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, .85fr); gap: 56px; align-items: center; }
.auth-card { background: var(--card); color: var(--ink); border: var(--line); border-radius: 32px; padding: clamp(22px, 4vw, 38px); box-shadow: 8px 8px 0 var(--ink); max-width: 520px; width: 100%; justify-self: end; }
.auth-title { font-size: clamp(2rem, 4.4vw, 3rem); font-weight: 800; }
.auth-title:focus { outline: none; }
.auth-sub { margin-top: 12px; }
.auth-sub.small { font-size: .92rem; opacity: .8; }
.auth-form { display: grid; gap: 16px; margin-top: 24px; }
.field { display: grid; gap: 6px; }
.field > label { font-weight: 700; font-size: .95rem; }
.auth-form input, .auth-form select { font: 500 1rem var(--body); padding: 13px 16px; border: var(--line); border-radius: 16px; background: var(--paper); color: var(--ink); width: 100%; }
.auth-form input[aria-invalid="true"], .auth-form select[aria-invalid="true"] { border-color: var(--danger); }
.auth :focus-visible { outline: 4px solid var(--blue); outline-offset: 3px; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .auth :focus-visible { outline-color: var(--yellow); } }
:root[data-theme="dark"] .auth :focus-visible { outline-color: var(--yellow); }
.auth .auth-title:focus { outline: none; } /* focused by script only, to announce a new step */
.pw { position: relative; }
.pw input { padding-right: 118px; }
.pw-toggle { position: absolute; right: 8px; top: 50%; transform: translateY(-50%); font: 700 .85rem var(--body); padding: 6px 12px; border: 2px solid var(--ink); border-radius: 999px; background: var(--card); color: var(--ink); cursor: pointer; }
.field-hint { font-size: .85rem; opacity: .75; }
.field-error { color: var(--danger); font-size: .88rem; font-weight: 700; }
.form-msg { border: 2px solid var(--ink); border-radius: 16px; padding: 12px 14px; font-weight: 500; }
.form-msg.is-error { border-color: var(--danger); background: color-mix(in srgb, var(--danger) 10%, var(--card)); }
.form-msg.is-info { border-color: var(--blue); background: color-mix(in srgb, var(--blue) 10%, var(--card)); }
.form-msg.is-ok { border-color: var(--ink); background: color-mix(in srgb, var(--mint) 35%, var(--card)); }
.auth-form .btn, .auth-card > [data-step] > .btn { width: 100%; text-align: center; }
.auth-card [data-step] > .btn, .auth-card .form-msg + .btn { margin-top: 16px; }
.btn:disabled { cursor: not-allowed; opacity: .7; transform: none; box-shadow: 4px 4px 0 var(--ink); }
.btn[aria-busy="true"] { cursor: progress; }
.btn[aria-busy="true"]::before { content: ""; display: inline-block; width: .9em; height: .9em; margin-right: 8px; vertical-align: -1px; border: 2px solid currentColor; border-right-color: transparent; border-radius: 50%; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.auth-row { display: flex; justify-content: flex-end; margin-top: -6px; font-size: .92rem; }
.auth-alt { margin-top: 20px; font-size: .95rem; }
.auth-alt a, .auth-row a { font-weight: 700; text-underline-offset: 4px; text-decoration-thickness: 2px; }
.auth-art { position: relative; aspect-ratio: 1; max-width: 460px; width: 100%; border: var(--line); border-radius: 44px; background: var(--blue); box-shadow: 10px 10px 0 var(--ink); overflow: hidden; display: grid; grid-template: 100% / 100%; place-items: center;
  background-image: linear-gradient(rgba(255,255,255,.14) 2px, transparent 2px), linear-gradient(90deg, rgba(255,255,255,.14) 2px, transparent 2px); background-size: 44px 44px; }
.auth-art picture { display: contents; } /* so the img sizes against the panel, not the picture box */
.auth-art img { display: block; grid-area: 1 / 1; } /* one cell, whatever else <picture> contributes */
.auth-art source { display: none; }
.auth-art img { width: 78%; height: auto; margin: auto; }
.auth-art img.tall { width: 56%; height: auto; } /* portrait image (robotic arm) */
.auth-art.is-peek { place-items: end center; }
.auth-art.is-peek img { width: 92%; margin: 0 auto; } /* waving astronaut: hard cut sits on the panel's bottom edge */
body[data-guard] main { visibility: hidden; }
@media (max-width: 860px) {
  .auth { padding-top: 28px; }
  .auth .wrap { grid-template-columns: 1fr; gap: 28px; }
  .auth-card { justify-self: stretch; max-width: none; }
  .auth-art { order: -1; aspect-ratio: auto; height: 170px; max-width: none; border-radius: 32px; box-shadow: 6px 6px 0 var(--ink); }
  .auth-art img, .auth-art img.tall { width: auto; height: 86%; }
  .auth-art.is-peek img { width: auto; height: 94%; }
}

/* ================= App shell (js/shell.js): dashboard, academy, progress, simulator, profile, settings =================
   Desktop (1024px+): fixed sidebar. Below: sticky top bar + fixed bottom tab bar + "More" sheet; lesson tree in a drawer. */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.skip { position: absolute; left: 12px; top: -100px; z-index: 100; background: var(--yellow); color: var(--dark); border: var(--line); border-radius: 999px; padding: 8px 16px; font-weight: 700; }
.skip:focus { top: calc(env(safe-area-inset-top, 0px) + 12px); }

:root { --side-w: 260px; }
:root.side-collapsed { --side-w: 84px; }
.app { --danger: #B42318; --tab-h: 64px; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .app { --danger: #FF9A8B; }
  :root:not([data-theme="light"]) .app :focus-visible { outline-color: var(--yellow); }
}
:root[data-theme="dark"] .app { --danger: #FF9A8B; }
:root[data-theme="dark"] .app :focus-visible { outline-color: var(--yellow); }
.app [hidden] { display: none !important; }
body.has-overlay { overflow: hidden; }
.ico { width: 24px; height: 24px; flex: 0 0 auto; }

.app-main { padding: 20px calc(env(safe-area-inset-right, 0px) + 16px) calc(var(--tab-h) + env(safe-area-inset-bottom, 0px) + 36px) calc(env(safe-area-inset-left, 0px) + 16px); }
.page { max-width: 1080px; margin: 0 auto; }
@media (min-width: 640px) { .app-main { padding-inline: calc(env(safe-area-inset-left, 0px) + 24px) calc(env(safe-area-inset-right, 0px) + 24px); padding-top: 24px; } }

/* Sidebar (desktop only) */
.side { display: none; }
.side-top { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 0 2px 0 4px; }
.side-logo { display: flex; align-items: center; gap: 10px; min-width: 0; min-height: 44px; font: 800 1.35rem var(--display); letter-spacing: -0.03em; text-decoration: none; border-radius: 14px; }
.side-logo b { color: var(--blue); }
.side-logo .side-label { display: block; white-space: nowrap; }
.side-logo-mark { flex: 0 0 auto; width: 40px; height: 40px; display: grid; place-items: center; border: var(--line); border-radius: 12px; background: var(--yellow); color: var(--dark); font-size: 1.25rem; }
.side-collapse, .icon-btn { flex: 0 0 auto; width: 44px; height: 44px; display: grid; place-items: center; padding: 0; border: 2px solid var(--ink); border-radius: 50%; background: var(--paper); color: var(--ink); cursor: pointer; }
.side-collapse .ico, .icon-btn .ico { width: 20px; height: 20px; }
.side-collapse .ico { transition: transform .2s; }
.side-collapsed .side-collapse .ico { transform: rotate(180deg); }
.side-nav ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 4px; }
.side-item { display: flex; align-items: center; gap: 10px; min-height: 48px; padding: 8px 10px; border: 3px solid transparent; border-radius: 999px; font-weight: 700; text-decoration: none; }
.side-item:hover { background: color-mix(in srgb, var(--blue) 10%, transparent); }
.side-item[aria-current="page"] { background: var(--yellow); color: var(--dark); border-color: var(--ink); box-shadow: 3px 3px 0 var(--ink); }
.side-label { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 8px; min-width: 0; }
.side-label .soon { font-size: .68rem; padding: 0 7px; }
.side-li .tree-slot:not(:empty) { margin: 8px 0 4px; }
.side-user { margin-top: auto; display: grid; gap: 6px; padding-top: 12px; border-top: 3px solid color-mix(in srgb, var(--ink) 18%, transparent); }
.side-me { display: flex; align-items: center; gap: 12px; min-height: 56px; padding: 6px 8px; border-radius: 20px; text-decoration: none; }
.side-me:hover { background: color-mix(in srgb, var(--blue) 10%, transparent); }
.side-me[aria-current="page"] { background: color-mix(in srgb, var(--yellow) 45%, var(--card)); }
.side-me-text { display: grid; line-height: 1.25; }
.side-me-name { font-weight: 700; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.side-me-level { font-size: .82rem; opacity: .75; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.side-logout { display: flex; align-items: center; gap: 12px; min-height: 44px; padding: 8px 14px; border: 0; border-radius: 999px; background: none; color: inherit; font: 700 1rem var(--body); text-align: left; cursor: pointer; }
.side-logout:hover { background: color-mix(in srgb, var(--coral) 22%, transparent); }
.avatar { flex: 0 0 auto; width: 44px; height: 44px; display: grid; place-items: center; border: var(--line); border-radius: 50%; background: var(--mint); color: var(--dark); font: 800 1rem var(--display); letter-spacing: 0; }
.avatar:empty::before { content: ""; width: 14px; height: 14px; border-radius: 50%; background: color-mix(in srgb, var(--dark) 25%, transparent); }

@media (min-width: 1024px) {
  .side { display: flex; flex-direction: column; gap: 16px; position: fixed; z-index: 40;
    top: calc(env(safe-area-inset-top, 0px) + 16px); bottom: calc(env(safe-area-inset-bottom, 0px) + 16px); left: calc(env(safe-area-inset-left, 0px) + 16px);
    width: var(--side-w); padding: 16px 12px; background: var(--card); border: var(--line); border-radius: 28px; box-shadow: var(--pop);
    overflow: hidden; transition: width .2s ease; }
  /* the menu (and lesson tree) scrolls on its own; logo and user card stay put */
  .side-nav { flex: 1 1 auto; min-height: 0; overflow-x: hidden; overflow-y: auto; overscroll-behavior: contain; scrollbar-width: thin; margin: -4px -8px; padding: 4px 8px 8px; }
  .app-main { padding: 32px 36px 64px calc(env(safe-area-inset-left, 0px) + 16px + var(--side-w) + 40px); transition: padding-left .2s ease; }
  .topbar, .tabbar, .sheet, [data-scrim="sheet"] { display: none !important; }
  /* collapsed: icons only; labels stay in the accessibility tree */
  .side-collapsed .side { padding-inline: 10px; }
  .side-collapsed .side-label { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
  .side-collapsed .side-top { flex-direction: column; gap: 10px; padding: 0; }
  .side-collapsed .side-item, .side-collapsed .side-logout { justify-content: center; padding-inline: 0; }
  .side-collapsed .side-me { justify-content: center; padding-inline: 0; }
}

/* Top bar (mobile / tablet) */
.topbar { position: sticky; top: 0; z-index: 40; display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: 10px;
  margin-top: calc(-1 * env(safe-area-inset-top, 0px));
  padding: calc(env(safe-area-inset-top, 0px) + 8px) calc(env(safe-area-inset-right, 0px) + 12px) 8px calc(env(safe-area-inset-left, 0px) + 16px);
  background: var(--card); border-bottom: var(--line); }
.topbar .logo { display: flex; align-items: center; min-height: 44px; font-size: 1.2rem; }
.topbar-title { font: 800 1.05rem var(--display); letter-spacing: -0.02em; text-align: center; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.avatar-btn { display: grid; place-items: center; width: 48px; height: 48px; border-radius: 50%; text-decoration: none; }
.avatar-btn .avatar { width: 40px; height: 40px; font-size: .92rem; }
.avatar-btn[aria-current="page"] .avatar { background: var(--yellow); }
@media (max-width: 359px) { .topbar .logo { font-size: 1.05rem; } .topbar-title { font-size: .95rem; } }

/* Bottom tab bar */
.tabbar { position: fixed; z-index: 45; left: 0; right: 0; bottom: 0; background: var(--card); border-top: var(--line);
  padding: 6px calc(env(safe-area-inset-right, 0px) + 6px) calc(env(safe-area-inset-bottom, 0px) + 6px) calc(env(safe-area-inset-left, 0px) + 6px); }
.tabbar ul { list-style: none; margin: 0 auto; padding: 0; max-width: 560px; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 2px; }
.tab { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 3px; width: 100%; min-height: 52px; padding: 2px; border: 0; border-radius: 16px; background: none; color: inherit; font: 700 .72rem/1.2 var(--body); text-decoration: none; cursor: pointer; }
.tab .ico { width: 52px; height: 30px; padding: 3px 13px; border: 2px solid transparent; border-radius: 999px; transition: background-color .15s; }
.tab:hover .ico { background: color-mix(in srgb, var(--blue) 12%, transparent); }
.tab[aria-current="page"] .ico, .tab.is-active .ico { background: var(--yellow); color: var(--dark); border-color: var(--ink); }
.tab > span { max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* Overlays: scrim + "More" bottom sheet + lesson drawer */
.scrim { position: fixed; inset: 0; z-index: 60; background: rgba(22, 18, 63, .5); opacity: 0; visibility: hidden; transition: opacity .2s, visibility 0s linear .2s; }
.is-sheet-open [data-scrim="sheet"], .is-drawer-open [data-scrim="drawer"] { opacity: 1; visibility: visible; transition: opacity .2s; }
.sheet { position: fixed; z-index: 65; left: 0; right: 0; bottom: 0; max-width: 560px; margin: 0 auto; background: var(--card); color: var(--ink); border: var(--line); border-bottom: 0; border-radius: 28px 28px 0 0;
  padding: 4px calc(env(safe-area-inset-right, 0px) + 16px) calc(env(safe-area-inset-bottom, 0px) + 18px) calc(env(safe-area-inset-left, 0px) + 16px);
  transform: translateY(105%); visibility: hidden; transition: transform .25s ease, visibility 0s linear .25s; touch-action: none; }
.is-sheet-open .sheet { transform: none; visibility: visible; transition: transform .25s ease; }
.sheet.is-dragging { transition: none; }
.sheet-grab { display: grid; place-items: center; height: 26px; }
.sheet-grab i { width: 44px; height: 5px; border-radius: 5px; background: color-mix(in srgb, var(--ink) 30%, transparent); }
.sheet-h { font-size: 1.25rem; font-weight: 800; padding: 2px 4px 12px; }
.sheet-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.sheet-item { display: flex; align-items: center; gap: 14px; width: 100%; min-height: 56px; padding: 10px 16px; border: 2px solid var(--ink); border-radius: 18px; background: var(--paper); color: inherit; font: 700 1rem var(--body); text-align: left; text-decoration: none; cursor: pointer; }
.sheet-item .soon { margin-left: auto; font-size: .75rem; }
.sheet-item[aria-current="page"] { background: var(--yellow); color: var(--dark); }
.sheet-item.is-danger { color: var(--danger); }
.drawer { position: fixed; z-index: 65; top: 0; bottom: 0; left: 0; width: min(360px, 88vw); display: flex; flex-direction: column; background: var(--card); color: var(--ink); border: var(--line); border-left: 0; border-radius: 0 28px 28px 0; box-shadow: 6px 0 0 var(--ink);
  padding: calc(env(safe-area-inset-top, 0px) + 16px) 14px calc(env(safe-area-inset-bottom, 0px) + 16px) calc(env(safe-area-inset-left, 0px) + 14px);
  overflow-y: auto; overscroll-behavior: contain; transform: translateX(-105%); visibility: hidden; transition: transform .25s ease, visibility 0s linear .25s; }
.is-drawer-open .drawer { transform: none; visibility: visible; transition: transform .25s ease; }
.drawer-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 0 4px 12px 8px; }
.drawer-head h2 { font-size: 1.4rem; font-weight: 800; }
.modules-btn { display: none; align-items: center; gap: 2px; min-height: 48px; }
.tree-in-drawer .modules-btn { display: inline-flex; }

/* Lesson tree (js/academy.js), in the sidebar or the drawer */
.mod-list, .lesson-list, .prog-list { list-style: none; margin: 0; padding: 0; }
.mod + .mod { margin-top: 6px; }
.mod-head { display: flex; align-items: center; gap: 10px; width: 100%; min-height: 48px; padding: 8px; border: 0; border-radius: 16px; background: none; color: inherit; font: inherit; text-align: left; cursor: pointer; }
button.mod-head:hover { background: color-mix(in srgb, var(--blue) 10%, transparent); }
.mod-n { flex: 0 0 auto; width: 32px; height: 32px; display: grid; place-items: center; border: var(--line); border-radius: 50%; background: var(--yellow); color: var(--dark); font: 800 1rem var(--display); }
.mod-t { flex: 1; min-width: 0; display: grid; font-weight: 700; line-height: 1.25; }
.mod-t small { font-size: .78rem; font-weight: 500; opacity: .75; }
.mod-count { font-size: .85rem; font-weight: 700; white-space: nowrap; opacity: .8; }
.mod-chev, .mod-lock { flex: 0 0 auto; width: 22px; height: 22px; display: grid; place-items: center; }
.mod-chev svg, .mod-lock svg { width: 100%; height: 100%; }
.mod-chev { transition: transform .2s; }
.mod.is-open .mod-chev { transform: rotate(180deg); }
.mod.is-locked .mod-head { cursor: not-allowed; opacity: .5; }
.mod.is-locked .mod-n { background: var(--card); color: var(--ink); }
.mod.is-complete .mod-n { background: var(--mint); }
.lesson-list { display: none; margin: 2px 0 8px 23px; padding-left: 12px; border-left: 3px solid color-mix(in srgb, var(--ink) 18%, transparent); }
.mod.is-open .lesson-list { display: block; }
.lesson { display: flex; align-items: center; gap: 10px; min-height: 44px; padding: 8px 10px; border-radius: 14px; text-decoration: none; line-height: 1.3; }
a.lesson:hover { background: color-mix(in srgb, var(--blue) 10%, transparent); }
.lesson.is-current { background: color-mix(in srgb, var(--yellow) 45%, var(--card)); font-weight: 700; }
.lesson.is-locked { opacity: .5; cursor: not-allowed; }
.lesson-t { flex: 1; min-width: 0; }
.lesson-dur { font-size: .8rem; opacity: .7; white-space: nowrap; }
/* Status mark: empty ring, filled dot on the current lesson, check when completed, lock when not open yet */
.lesson-mark { flex: 0 0 auto; width: 22px; height: 22px; display: grid; place-items: center; border: 2px solid currentColor; border-radius: 50%; }
.lesson-mark svg { width: 16px; height: 16px; }
.lesson.is-current .lesson-mark::after { content: ""; width: 10px; height: 10px; border-radius: 50%; background: currentColor; }
.lesson.is-done .lesson-mark { background: var(--mint); border-color: var(--ink); color: var(--dark); }
.lesson.is-done.is-current .lesson-mark::after { display: none; }
.lesson.is-locked .lesson-mark { border: 0; }
.side-note { padding: 8px; font-size: .95rem; opacity: .8; }
.side .lesson-tree { font-size: .92rem; }
.side .mod-head { gap: 8px; padding: 6px; }
.side .lesson-list { margin-left: 16px; padding-left: 6px; }
.side .lesson { gap: 8px; padding: 6px 8px; }
.side .lesson-dur { display: none; }

/* Page banner: text + mascot on the blue grid stage */
.banner { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 28px; padding: clamp(20px, 3vw, 32px); background: var(--card); color: var(--ink); border: var(--line); border-radius: 32px; box-shadow: var(--pop); }
.banner-kicker { font-size: .82rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; opacity: .7; margin-bottom: 8px; }
.banner-title { font-size: clamp(2rem, 4.4vw, 3rem); font-weight: 800; overflow-wrap: anywhere; }
.banner-sub { margin-top: 12px; max-width: 34rem; }
.banner-actions { margin-top: 18px; display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
.banner-art { position: relative; width: 280px; height: 220px; display: grid; grid-template: 100% / 100%; place-items: center; border: var(--line); border-radius: 24px; background: var(--blue); overflow: hidden;
  background-image: linear-gradient(rgba(255,255,255,.14) 2px, transparent 2px), linear-gradient(90deg, rgba(255,255,255,.14) 2px, transparent 2px); background-size: 36px 36px; }
.banner-art picture { display: contents; }
.banner-art img { display: block; grid-area: 1 / 1; width: auto; height: 86%; max-width: 92%; object-fit: contain; }
@media (max-width: 1023px) { .banner-art { width: 220px; height: 170px; } }
@media (max-width: 639px) {
  .banner { grid-template-columns: minmax(0, 1fr); gap: 16px; padding: 16px 16px 20px; border-radius: 26px; box-shadow: 5px 5px 0 var(--ink); }
  .banner-art { order: -1; width: 100%; height: 140px; border-radius: 18px; }
  .banner-actions { margin-top: 14px; }
  .banner.is-compact .banner-sub { display: none; } /* Lessons: keep the video close to the top */
}

/* Motion: content rises in once the guard lifts; mascots float. Nothing moves with reduced motion. */
@keyframes rise { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: no-preference) {
  body:not([data-guard]) .page > * { animation: rise .4s ease both; }
  body:not([data-guard]) .page > :nth-child(3) { animation-delay: .06s; }
  body:not([data-guard]) .page > :nth-child(n+4) { animation-delay: .12s; }
  .banner-art img { animation: float 5s ease-in-out infinite; }
}

/* Shared page pieces */
.kpis { padding: 0; } /* the landing page gives every <section> 96px of padding */
.section-h { font-size: 1.5rem; font-weight: 800; margin: 36px 0 14px; }
.section-more { margin-top: 16px; }
.section-more a { font-weight: 700; text-underline-offset: 4px; text-decoration-thickness: 2px; }
.empty-note { margin-top: 14px; padding: 14px 16px; border: 2px dashed color-mix(in srgb, var(--ink) 45%, transparent); border-radius: 18px; font-weight: 500; }
.empty-card { margin-top: 24px; padding: clamp(20px, 3vw, 28px); background: var(--yellow); color: var(--dark); border: var(--line); border-radius: 28px; box-shadow: var(--pop); display: grid; gap: 10px; justify-items: start; }
.empty-card h2 { font-size: 1.5rem; }
.empty-card .btn { margin-top: 6px; }
.panel { margin-top: 24px; max-width: 44rem; padding: clamp(20px, 3vw, 30px); background: var(--card); color: var(--ink); border: var(--line); border-radius: 28px; box-shadow: var(--pop); display: grid; gap: 14px; justify-items: start; }
.panel .section-h { margin: 0; }
.panel .auth-form { width: 100%; margin-top: 0; }
.panel .auth-form .btn { width: auto; justify-self: start; }
.panel > .form-msg { width: 100%; }
/* Two columns of panels (Sozlamalar: password | devices + delete account); stacked below 1100px */
.panel-row { display: grid; gap: 0 24px; align-items: start; }
.panel-col { min-width: 0; }
@media (min-width: 1100px) { .panel-row { grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); } .panel-row .panel { max-width: none; } }
.panel.is-danger .section-h { color: var(--danger); }
.panel .btn:disabled .soon { margin-left: 6px; }
.auth-form input[readonly] { opacity: .75; cursor: default; }
.profile-since { font-size: .95rem; }
.app .field-error { color: var(--danger); }

/* Dashboard */
.dash-card { margin-top: 24px; padding: 22px; border: var(--line); border-radius: 24px; background: var(--yellow); color: var(--dark); box-shadow: 5px 5px 0 var(--ink); }
.continue { display: grid; gap: 10px; justify-items: start; padding: clamp(20px, 3vw, 28px); border-radius: 28px; box-shadow: var(--pop); }
.continue > * { max-width: 100%; }
.continue-h { font: 700 .82rem var(--body); letter-spacing: .08em; text-transform: uppercase; opacity: .8; }
.continue-meta { font-weight: 700; font-size: .92rem; }
.continue-title { font: 800 clamp(1.4rem, 3vw, 1.9rem)/1.1 var(--display); letter-spacing: -0.02em; overflow-wrap: anywhere; }
.continue .bar { width: 100%; max-width: 30rem; background: var(--card); border-color: var(--dark); }
.continue .bar i { background: var(--blue); }
.continue-line { font-weight: 500; }
.continue .btn { margin-top: 6px; box-shadow: 4px 4px 0 var(--dark); border-color: var(--dark); }
.kpi-grid { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.kpi { display: grid; gap: 4px; align-content: start; padding: 18px 20px; background: var(--card); border: var(--line); border-radius: 24px; box-shadow: 4px 4px 0 var(--ink); }
.kpi:nth-child(2) { background: var(--mint); color: var(--dark); }
.kpi:nth-child(3) { background: var(--coral); color: var(--dark); }
.kpi strong { font: 800 clamp(1.8rem, 4vw, 2.6rem)/1 var(--display); letter-spacing: -0.02em; }
.kpi span { font-size: .95rem; font-weight: 500; }
@media (max-width: 559px) {
  .kpi-grid { grid-template-columns: minmax(0, 1fr); gap: 12px; }
  .kpi { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 14px 18px; }
  .kpi strong { font-size: 1.8rem; order: 2; }
}

/* Simulator (simulator.html, js/simulator/) */
.page-wide { max-width: 1320px; }
.sim-work { margin-top: 24px; display: grid; grid-template-columns: minmax(0, 1fr); gap: 24px; align-items: start; }
@media (min-width: 1280px) { .sim-work { grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr); } }
.sim-card { padding: clamp(16px, 2.4vw, 22px); background: var(--card); color: var(--ink); border: var(--line); border-radius: 28px; box-shadow: var(--pop); display: grid; gap: 12px; min-width: 0; }
.sim-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px 14px; }
.sim-h { font-size: 1.5rem; font-weight: 800; }
.sim-h3 { font-size: 1.1rem; font-weight: 800; }
.sim-file { font: 500 .85rem var(--body); letter-spacing: 0; opacity: .7; margin-left: 4px; }
.sim-tools { display: flex; flex-wrap: wrap; gap: 10px; }
.btn.sm { padding: 8px 16px; font-size: .92rem; box-shadow: 3px 3px 0 var(--ink); }
.btn.sm:hover { box-shadow: 5px 5px 0 var(--ink); }
.btn.sm:disabled { opacity: .5; transform: none; box-shadow: 3px 3px 0 var(--ink); }
.btn[aria-busy="true"] svg { display: none; }
.link-btn { background: none; border: 0; padding: 4px 2px; color: inherit; font: 700 .92rem var(--body); text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 4px; cursor: pointer; }
.sim-hint { font-size: .95rem; opacity: .85; }

/* Circuit canvas: scrolls sideways inside the card on phones so pins stay big enough to tap */
.sim-canvas-wrap { overflow-x: auto; border: var(--line); border-radius: 20px; background-color: color-mix(in srgb, var(--blue) 7%, var(--card));
  background-image: radial-gradient(color-mix(in srgb, var(--ink) 16%, transparent) 1.2px, transparent 1.5px); background-size: 20px 20px; }
.sim-canvas { display: block; width: 100%; min-width: 540px; height: auto; aspect-ratio: 660 / 380; touch-action: manipulation; -webkit-user-select: none; user-select: none; }
.sim-canvas .mcu { fill: #1F8A8A; stroke: #16123F; stroke-width: 3; }
.sim-canvas .usb { fill: #C9CCD6; stroke: #16123F; stroke-width: 3; }
.sim-canvas .jack, .sim-canvas .hdr, .sim-canvas .chip { fill: #16123F; }
.sim-canvas .hdr-label { fill: #fff; font: 700 10px var(--body); text-anchor: middle; }
.sim-canvas .brand { fill: #fff; font: 800 30px var(--display); }
.sim-canvas .brand-sub { fill: #fff; opacity: .8; font: 700 11px var(--body); letter-spacing: .1em; }
.sim-canvas .chip-label { fill: #fff; font: 700 11px var(--body); text-anchor: middle; letter-spacing: .06em; }
.sim-canvas .board-led rect { fill: #4E6666; stroke: #16123F; stroke-width: 1.5; }
.sim-canvas .board-led.is-on rect { fill: #FFD23F; filter: drop-shadow(0 0 4px #FFD23F); }
.sim-canvas .board-led.is-power.is-on rect { fill: #3DF2B0; filter: drop-shadow(0 0 4px #3DF2B0); }
.sim-canvas .leg { stroke: #8A8AA0; stroke-width: 3; stroke-linecap: round; }
.sim-canvas .res { fill: #E8C38A; stroke: #16123F; stroke-width: 2; }
.sim-canvas .b1 { fill: #D7332A; } /* 220 Ω: red, red, brown, gold */
.sim-canvas .b2 { fill: #7A4A21; }
.sim-canvas .b3 { fill: #C9A43A; }
.sim-canvas .part-label { fill: var(--ink); font: 700 13px var(--body); text-anchor: middle; }
/* LEDs: --b (0..1, set per frame) is the brightness; analogWrite() PWM gives values in between */
.sim-canvas .led-part { --off: #A8392F; --on: #FF7A63; }
.sim-canvas .led-part.is-yellow { --off: #8C6D12; --on: #FFE066; }
.sim-canvas .led-part.is-green { --off: #1C6B4F; --on: #5CF5BE; }
.sim-canvas .led-part.is-blue { --off: #1B3F8C; --on: #7FB2FF; }
.sim-canvas .led-body, .sim-canvas .led-rim { fill: var(--off); stroke: #16123F; stroke-width: 2.5; }
.sim-canvas .led-lit { fill: var(--on); opacity: var(--b, 0); pointer-events: none; }
.sim-canvas .led-glow { opacity: var(--b, 0); pointer-events: none; }
/* Potentiometer: drag the knob (or arrow keys) */
.sim-canvas .pot-body { fill: #2F6FD6; stroke: #16123F; stroke-width: 2.5; }
.sim-canvas .pot-knob { cursor: grab; touch-action: none; }
.sim-canvas .pot-knob:active { cursor: grabbing; }
.sim-canvas .pot-knob:focus { outline: none; }
.sim-canvas .pot-hit { fill: transparent; }
.sim-canvas .pot-cap { fill: #E6E4F0; stroke: #16123F; stroke-width: 2.5; }
.sim-canvas .pot-pointer { stroke: #16123F; stroke-width: 5; stroke-linecap: round; }
.sim-canvas .pot-knob:focus-visible .pot-cap { stroke: var(--blue); stroke-width: 4; }
/* Buzzer: sound waves while it plays */
.sim-canvas .bz-body { fill: #16123F; stroke: #0B0826; stroke-width: 2; }
.sim-canvas .bz-ring { fill: none; stroke: #3A3570; stroke-width: 3; }
.sim-canvas .bz-hole { fill: #0B0826; }
.sim-canvas .bz-plus { fill: #fff; font: 700 14px var(--body); text-anchor: middle; }
.sim-canvas .bz-wave { fill: none; stroke: var(--coral); stroke-width: 3; stroke-linecap: round; opacity: 0; transition: opacity .1s; }
.sim-canvas .buzzer-part.is-on .bz-wave { opacity: 1; }
.sim-canvas .btn-part { cursor: pointer; touch-action: none; }
.sim-canvas .btn-base { fill: #16123F; }
.sim-canvas .btn-cap { fill: var(--coral); stroke: #fff; stroke-width: 2; transform-box: fill-box; transform-origin: center; transition: transform .06s; }
.sim-canvas .btn-part.is-red .btn-cap { fill: #FF4B3A; }
.sim-canvas .btn-part.is-yellow .btn-cap { fill: #FFD23F; }
.sim-canvas .btn-part.is-green .btn-cap { fill: #3DF2B0; }
.sim-canvas .btn-part.is-blue .btn-cap { fill: #3D8BFF; }
.sim-canvas .btn-part.is-pressed .btn-cap { filter: brightness(.75); transform: scale(.86); }
/* GND rail (breadboard power rail): all holes connected */
.sim-canvas .rail-strip { fill: #F7F6FF; stroke: #16123F; stroke-width: 2; }
.sim-canvas .rail-line { stroke: #2F6FD6; stroke-width: 3; stroke-linecap: round; }
.sim-canvas .rail-label { fill: #2F6FD6; font: 800 18px var(--body); text-anchor: middle; }
.sim-canvas .part-pin-label { fill: #fff; font: 700 9px var(--body); }
.sim-canvas .servo-body, .sim-canvas .servo-tab { fill: #2F6FD6; stroke: #16123F; stroke-width: 2.5; }
.sim-canvas .servo-tab { fill: #2559B0; }
.sim-canvas .servo-cable { fill: none; stroke-width: 4; stroke-linecap: round; }
.sim-canvas .servo-cable.is-sig { stroke: #FF8A1F; }
.sim-canvas .servo-cable.is-v5 { stroke: #E5322B; }
.sim-canvas .servo-cable.is-gnd { stroke: #7A4A21; }
.sim-canvas .servo-arc { fill: none; stroke: var(--ink); stroke-width: 2; stroke-dasharray: 4 6; opacity: .35; }
.sim-canvas .servo-horn { fill: #F7F6FF; stroke: #16123F; stroke-width: 2.5; stroke-linejoin: round; }
.sim-canvas .servo-hub { fill: #C9CCD6; stroke: #16123F; stroke-width: 2.5; }
.sim-canvas .servo-hole { fill: #16123F; }
.sim-canvas .servo-deg { fill: #fff; font: 800 15px var(--body); text-anchor: middle; font-variant-numeric: tabular-nums; }
.sim-canvas .sonar-pcb { fill: #2FA4E7; stroke: #16123F; stroke-width: 2.5; }
.sim-canvas .sonar-can { fill: #C9CCD6; stroke: #16123F; stroke-width: 2.5; }
.sim-canvas .sonar-mesh { fill: #8A8AA0; stroke: #16123F; stroke-width: 1.5; stroke-dasharray: 2 2; }
.sim-canvas .sonar-waves path { fill: none; stroke: var(--yellow); stroke-width: 4; stroke-linecap: round; opacity: 0; transition: opacity .12s; }
.sim-canvas .sonar-waves.is-on path { opacity: 1; }
.sim-canvas .sonar-ruler { stroke: var(--ink); stroke-width: 2; stroke-dasharray: 2 8; stroke-linecap: round; opacity: .4; }
.sim-canvas .sonar-target { cursor: ew-resize; touch-action: none; }
.sim-canvas .sonar-target:focus { outline: none; }
.sim-canvas .sonar-hit { fill: transparent; }
.sim-canvas .sonar-wall { fill: var(--coral); stroke: #16123F; stroke-width: 2.5; }
.sim-canvas .sonar-grip { stroke: #16123F; stroke-width: 2; stroke-linecap: round; opacity: .6; }
.sim-canvas .sonar-target:focus-visible .sonar-wall { stroke: var(--blue); stroke-width: 4; }
.sim-canvas .sonar-dist { fill: var(--ink); font: 800 14px var(--body); text-anchor: middle; font-variant-numeric: tabular-nums; }
.sim-canvas .lcd-pcb { fill: #1F8A3A; stroke: #16123F; stroke-width: 2.5; }
.sim-canvas .lcd-bezel { fill: #16123F; }
.sim-canvas .lcd-screen { fill: #9BE36B; transition: fill .2s; }
.sim-canvas .lcd-screen.is-off { fill: #4F6E3A; }
.sim-canvas .lcd-cell { fill: #16123F; opacity: .06; pointer-events: none; }
.sim-canvas .lcd-px { fill: #16123F; opacity: .85; }
.sim-canvas .lcd-char { fill: #16123F; opacity: .9; font: 700 19px ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; text-anchor: middle; }
.sim-canvas .part-pin-label.is-mid { text-anchor: middle; }
.sim-canvas .ldr-pcb { fill: #2F6FD6; stroke: #16123F; stroke-width: 2.5; }
.sim-canvas .ldr-glow { fill: var(--yellow); opacity: calc(var(--l, 0) * .7); pointer-events: none; }
.sim-canvas .ldr-cell { fill: #F2E3C2; stroke: #16123F; stroke-width: 2.5; }
.sim-canvas .ldr-track { fill: none; stroke: #C0392B; stroke-width: 2; stroke-linejoin: round; }
.sim-canvas .light-slider { cursor: ew-resize; touch-action: none; }
.sim-canvas .light-slider:focus { outline: none; }
.sim-canvas .slider-hit { fill: transparent; }
.sim-canvas .light-track { stroke: var(--ink); stroke-width: 4; stroke-linecap: round; opacity: .3; }
.sim-canvas .light-moon { fill: #8A8AA0; }
.sim-canvas .light-sun { fill: var(--yellow); stroke: #16123F; stroke-width: 1.5; }
.sim-canvas .light-rays { stroke: var(--yellow); stroke-width: 3; stroke-linecap: round; }
.sim-canvas .light-knob { fill: var(--yellow); stroke: #16123F; stroke-width: 2.5; }
.sim-canvas .light-slider:focus-visible .light-knob { stroke: var(--blue); stroke-width: 4; }
.sim-canvas .slider-label { fill: var(--ink); font: 800 14px var(--body); text-anchor: middle; font-variant-numeric: tabular-nums; }
.sim-canvas .seg-body { fill: #16123F; stroke: #0B0826; stroke-width: 2.5; }
.sim-canvas .seg-off, .sim-canvas .seg-on { fill: none; stroke-width: 10; stroke-linecap: round; }
.sim-canvas .seg-off { stroke: #3A1A24; }
.sim-canvas .seg-on { stroke: #FF4B3A; opacity: var(--b, 0); filter: drop-shadow(0 0 5px #FF4B3A); }
.sim-canvas .btn-part:focus { outline: none; }
.sim-canvas .btn-part:focus-visible .btn-base { stroke: var(--blue); stroke-width: 4; }
.sim-canvas .pin { cursor: crosshair; }
.sim-canvas .pin:focus { outline: none; }
.sim-canvas .pin-hit { fill: transparent; }
.sim-canvas .pin-dot { fill: #C9CCD6; stroke: #16123F; stroke-width: 2; transition: fill .1s; }
.sim-canvas .pin.is-wired .pin-dot { fill: #fff; }
.sim-canvas .pin.is-high .pin-dot { fill: var(--mint); }
.sim-canvas .pin:hover .pin-dot, .sim-canvas .pin.is-pending .pin-dot { fill: var(--yellow); stroke-width: 3; }
.sim-canvas .pin:focus-visible .pin-hit { stroke: var(--blue); stroke-width: 3; }
.sim-canvas .wire { cursor: pointer; }
.sim-canvas .wire:focus { outline: none; }
.sim-canvas .wire-hit { stroke: transparent; stroke-width: 16; stroke-linecap: round; }
.sim-canvas .wire-line { stroke-width: 5; stroke-linecap: round; pointer-events: none; }
.sim-canvas .wire-line.is-gnd { stroke: var(--ink); }
.sim-canvas .wire:hover .wire-line, .sim-canvas .wire:focus-visible .wire-line { stroke-dasharray: 9 6; }
.sim-canvas .wire-pending { stroke: var(--ink); stroke-width: 3; stroke-dasharray: 6 6; opacity: .7; pointer-events: none; }
.sim-warnings { margin: 0; padding: 12px 16px 12px 34px; border: 2px solid var(--danger); border-radius: 16px; background: color-mix(in srgb, var(--danger) 10%, var(--card)); font-weight: 500; display: grid; gap: 4px; }

/* Run state, editor, compiler output, serial monitor */
.sim-state { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 16px; font-weight: 700; font-size: .92rem; }
.sim-status::before { content: ""; display: inline-block; width: 10px; height: 10px; margin-right: 8px; border: 2px solid var(--ink); border-radius: 50%; background: var(--paper); }
.sim-status[data-state="compiling"]::before { background: var(--yellow); }
.sim-status[data-state="running"]::before { background: var(--mint); }
.sim-time { font-weight: 500; opacity: .75; font-variant-numeric: tabular-nums; }
.sim-textarea, .sim-card .CodeMirror { width: 100%; height: 400px; border: var(--line); border-radius: 18px; background: #16123F; color: #E6E4FF; font: 500 .9rem/1.6 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.sim-textarea { padding: 14px; resize: vertical; tab-size: 2; }
.sim-card .CodeMirror { overflow: hidden; }
.sim-card .CodeMirror-focused { outline: 4px solid var(--blue); outline-offset: 3px; }
.cm-s-robo .CodeMirror-gutters { background: #16123F; border-right: 1px solid #3A3570; }
.cm-s-robo .CodeMirror-linenumber { color: #6F6AA8; }
.cm-s-robo .CodeMirror-cursor { border-left: 2px solid var(--yellow); }
.cm-s-robo .CodeMirror-selected { background: #37327A; }
.cm-s-robo.CodeMirror-focused .CodeMirror-selected { background: #4B46A0; }
.cm-s-robo .cm-keyword, .cm-s-robo .cm-type { color: var(--mint); }
.cm-s-robo .cm-number, .cm-s-robo .cm-atom { color: var(--yellow); }
.cm-s-robo .cm-comment { color: #9C98D6; font-style: italic; }
.cm-s-robo .cm-string { color: #FFB4A8; }
.cm-s-robo .cm-meta { color: #7FC8FF; }
.cm-s-robo .CodeMirror-matchingbracket { color: var(--yellow) !important; text-decoration: underline; }
.cm-s-robo .cm-error-line { background: rgba(255, 107, 87, .25); }
.sim-result pre { margin: 8px 0 0; max-height: 240px; overflow: auto; white-space: pre-wrap; overflow-wrap: anywhere; font: 500 .85rem/1.5 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
/* Compile errors: short Uzbek list (click a line to jump there), raw compiler output behind "Ko'proq" */
.sim-errors { list-style: none; margin: 10px 0 0; padding: 0; display: grid; gap: 8px; font-weight: 500; }
.sim-errors li { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 10px; }
.sim-errors code, .sim-result code { padding: 1px 6px; border-radius: 6px; background: color-mix(in srgb, var(--ink) 10%, transparent); font: 600 .9em ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.sim-err-line { flex: none; padding: 1px 10px; border: 2px solid var(--ink); border-radius: 999px; background: var(--card); color: var(--ink); font: 700 .82rem/1.5 var(--body); cursor: pointer; }
.sim-err-line:hover { background: var(--yellow); color: var(--dark); }
.sim-result details { margin-top: 12px; }
.sim-result summary { cursor: pointer; font-weight: 700; font-size: .9rem; }

/* Phones: a Run/Stop bar that stays above the tab bar while the editor is open (hidden on larger screens) */
.sim-runbar { display: none; }
@media (max-width: 639px) {
  [data-view="editor"] { padding-bottom: 84px; } /* room so the bar never covers the last content */
  .sim-runbar { display: flex; align-items: center; gap: 10px; position: fixed; z-index: 44; left: calc(env(safe-area-inset-left, 0px) + 12px); right: calc(env(safe-area-inset-right, 0px) + 12px);
    bottom: calc(var(--tab-h) + env(safe-area-inset-bottom, 0px) + 10px); padding: 10px 12px; background: var(--card); color: var(--ink); border: var(--line); border-radius: 18px; box-shadow: 4px 4px 0 var(--ink); }
  .sim-runbar .sim-state { flex: 1; min-width: 0; display: grid; gap: 0; font-size: .85rem; line-height: 1.3; }
  .sim-runbar .sim-time { font-size: .8rem; }
  .sim-runbar .btn { flex: none; }
  .sim-runbar [data-stop] { padding-inline: 12px; }
  .sim-runbar [data-stop] svg { margin-right: 0; }
  body.has-overlay .sim-runbar { visibility: hidden; } /* "More" sheet open */
}
.sim-serial-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 4px; }
.sim-serial { margin: 0; min-height: 110px; max-height: 220px; overflow: auto; padding: 12px 14px; background: #0E0B2E; color: var(--mint); border: var(--line); border-radius: 16px; font: 500 .85rem/1.5 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; white-space: pre-wrap; overflow-wrap: anywhere; }
.sim-foot { font-size: .92rem; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .sim-card .CodeMirror-focused { outline-color: var(--yellow); } }
:root[data-theme="dark"] .sim-card .CodeMirror-focused { outline-color: var(--yellow); }
@media (max-width: 559px) {
  .sim-card { border-radius: 22px; box-shadow: 4px 4px 0 var(--ink); }
  .sim-textarea, .sim-card .CodeMirror { height: 320px; }
}

/* Simulator gallery (project cards from js/simulator/projects.js) and editor header */
.banner-title[tabindex="-1"]:focus, .sim-title:focus { outline: none; } /* focused by script only, to announce the view change */
.proj-grid { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: minmax(0, 1fr); gap: 20px; }
@media (min-width: 640px) { .proj-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 1200px) { .proj-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; } }
.proj-grid > li { display: flex; }
.proj-card { flex: 1; display: flex; flex-direction: column; background: var(--card); color: var(--ink); border: var(--line); border-radius: 28px; box-shadow: var(--pop); overflow: hidden; text-decoration: none; transition: transform .15s, box-shadow .15s; }
a.proj-card:hover { transform: translate(-2px, -2px); box-shadow: 8px 8px 0 var(--ink); }
a.proj-card:active { transform: translate(3px, 3px); box-shadow: 2px 2px 0 var(--ink); }
.proj-thumb { display: block; aspect-ratio: 240 / 140; border-bottom: var(--line); background-color: #16123F;
  background-image: linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px); background-size: 20px 20px; }
.proj-thumb svg { display: block; width: 100%; height: 100%; }
.proj-thumb .t-brand { fill: #fff; font: 800 17px var(--display); }
.proj-thumb .t-chip { fill: #16123F; font: 800 11px var(--display); text-anchor: middle; }
.proj-thumb .t-lcd { fill: #16123F; font: 700 17px ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; text-anchor: middle; }
.proj-body { flex: 1; display: grid; gap: 8px; align-content: start; padding: 16px 18px 20px; }
.proj-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.proj-title { font-size: 1.35rem; font-weight: 800; overflow-wrap: anywhere; }
.proj-desc { font-size: .95rem; }
.lvl, .proj-soon { display: inline-block; padding: 2px 12px; border: 2px solid var(--dark); border-radius: 999px; color: var(--dark); font: 700 .8rem/1.5 var(--body); white-space: nowrap; }
.lvl.is-beginner { background: var(--mint); }
.lvl.is-intermediate { background: var(--coral); }
.proj-soon { background: var(--yellow); }
.proj-card.is-soon { cursor: not-allowed; box-shadow: 4px 4px 0 color-mix(in srgb, var(--ink) 45%, transparent); }
.proj-card.is-soon .proj-thumb svg { filter: grayscale(.8); opacity: .4; }
.proj-card.is-soon .lvl, .proj-card.is-soon .proj-title, .proj-card.is-soon .proj-desc { opacity: .55; }
.sim-top { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 16px; }
.sim-title { font-size: clamp(1.6rem, 3.6vw, 2.3rem); font-weight: 800; overflow-wrap: anywhere; }
@media (max-width: 559px) {
  .proj-card { border-radius: 22px; box-shadow: 4px 4px 0 var(--ink); }
  .sim-top { gap: 10px 12px; }
}

/* Lesson view */
.acad-title { font-size: clamp(1.8rem, 4vw, 2.6rem); font-weight: 800; }
.acad-title:focus { outline: none; } /* focused by script only, to announce a lesson change */
.acad-state { display: grid; gap: 16px; justify-items: start; margin-top: 24px; }
.lesson-view { margin-top: 28px; }
.lesson-crumb { font-weight: 700; font-size: .92rem; opacity: .75; margin-bottom: 10px; }
.player { position: relative; margin: 24px 0 28px; aspect-ratio: 16 / 9; border: var(--line); border-radius: 28px; overflow: hidden; background: var(--blue); box-shadow: var(--pop); }
.player video { display: block; width: 100%; height: 100%; object-fit: cover; background: var(--blue); }
.player video[controls] { object-fit: contain; background: #000; }
.player-soon { position: absolute; left: 50%; bottom: 20px; transform: translateX(-50%); max-width: calc(100% - 24px); margin: 0; padding: 10px 18px; background: var(--card); color: var(--ink); border: var(--line); border-radius: 999px; box-shadow: 3px 3px 0 var(--ink); font-weight: 700; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.lesson-body { max-width: 44rem; display: grid; gap: 14px; }
.lesson-body h2 { font-size: 1.5rem; margin-top: 10px; }
.lesson-body ul { margin: 0; padding-left: 1.3rem; display: grid; gap: 4px; }
.lesson-actions { margin-top: 30px; display: grid; gap: 14px; justify-items: start; }
.btn.is-done { background: var(--mint); color: var(--dark); }
.btn.is-done:disabled { opacity: 1; cursor: default; }
.btn svg { width: 1.1em; height: 1.1em; vertical-align: -3px; margin-right: 6px; }
.lesson-pager { display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap; margin-top: 34px; padding-top: 26px; border-top: 3px solid color-mix(in srgb, var(--ink) 18%, transparent); }
.btn[aria-disabled="true"] { opacity: .45; cursor: not-allowed; pointer-events: none; transform: none; box-shadow: 4px 4px 0 var(--ink); }
.pager-hint { margin-top: 14px; font-size: .92rem; opacity: .8; }

/* Lesson quiz (js/academy.js) */
.quiz { margin-top: 34px; max-width: 44rem; padding: clamp(20px, 3vw, 28px); background: var(--card); border: var(--line); border-radius: 28px; box-shadow: var(--pop); }
.quiz-h { font-size: 1.5rem; font-weight: 800; }
.quiz-sub { margin-top: 6px; opacity: .8; }
.quiz form { display: grid; gap: 16px; margin-top: 18px; }
.quiz-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 22px; }
.quiz-q { margin: 0; padding: 0; border: 0; min-width: 0; display: grid; gap: 8px; }
.quiz-q legend { padding: 0; margin-bottom: 8px; display: grid; gap: 2px; font-weight: 700; }
.quiz-n { font-size: .85rem; opacity: .7; }
.quiz-opt { display: flex; align-items: center; flex-wrap: wrap; gap: 10px 12px; min-height: 48px; padding: 10px 14px; border: 2px solid var(--ink); border-radius: 16px; background: var(--paper); font-weight: 500; cursor: pointer; }
.quiz-opt input { flex: 0 0 auto; width: 20px; height: 20px; margin: 0; accent-color: var(--blue); }
.quiz-opt-t { flex: 1; min-width: 0; overflow-wrap: anywhere; }
.quiz-opt:has(input:checked) { border-color: var(--blue); box-shadow: 3px 3px 0 var(--blue); }
.quiz-opt:has(input:disabled) { cursor: default; }
.quiz-opt.is-right { border-color: var(--ink); background: color-mix(in srgb, var(--mint) 45%, var(--card)); }
.quiz-opt.is-wrong { border-color: var(--danger); background: color-mix(in srgb, var(--danger) 12%, var(--card)); }
.quiz-tag { padding: 1px 10px; border: 2px solid currentColor; border-radius: 999px; font-size: .8rem; font-weight: 700; white-space: nowrap; }
.quiz-actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* Progress page */
.bar { height: 18px; border: var(--line); border-radius: 999px; background: var(--paper); overflow: hidden; }
.bar i { display: block; height: 100%; width: 0; background: var(--yellow); transition: width .6s ease; }
.bar.is-complete i { background: var(--mint); }
.bar.is-big { height: 26px; }
.bar.is-big i { background: var(--blue); }
.prog-total { margin-top: 24px; padding: clamp(20px, 3vw, 30px); background: var(--card); border: var(--line); border-radius: 28px; box-shadow: var(--pop); display: grid; gap: 12px; }
.prog-total .btn { justify-self: start; margin-top: 6px; }
.prog-big { font: 800 clamp(2.6rem, 6vw, 3.8rem)/1 var(--display); }
.prog-line { font-weight: 700; }
.prog-list { display: grid; gap: 14px; }
.prog-mod { padding: 18px 20px; background: var(--card); border: var(--line); border-radius: 24px; display: grid; gap: 12px; }
.prog-head { display: flex; align-items: center; gap: 12px; font-weight: 700; }
.prog-t { flex: 1; min-width: 0; }
.prog-status { font-size: .92rem; font-weight: 500; opacity: .85; }
.prog-mod.is-locked { opacity: .55; }
.prog-mod.is-locked .mod-n { background: var(--card); color: var(--ink); }
.prog-mod.is-complete .mod-n { background: var(--mint); }

@media (max-width: 559px) {
  .player { border-radius: 20px; box-shadow: 4px 4px 0 var(--ink); margin: 18px 0 22px; }
  .player-soon { bottom: 10px; padding: 6px 12px; font-size: .85rem; }
  .lesson-pager .btn { flex: 1 1 140px; text-align: center; padding: 12px 16px; }
  .lesson-actions .btn, .panel .btn, .empty-card .btn, .continue .btn, .prog-total .btn { width: 100%; text-align: center; justify-self: stretch; }
  .panel .auth-form .btn { width: 100%; }
  .modules-btn { width: 100%; justify-content: center; }
  .dash-card, .prog-total, .panel, .empty-card, .prog-mod { box-shadow: 4px 4px 0 var(--ink); }
  .quiz { border-radius: 22px; box-shadow: 4px 4px 0 var(--ink); }
  .quiz-actions .btn { flex: 1 1 100%; text-align: center; }
}

/* Admin panel (admin.html, js/admin.js) */
.adm { margin-top: 24px; }
.adm-tabs { display: flex; flex-wrap: wrap; gap: 8px; padding: 6px; width: fit-content; max-width: 100%; background: var(--card); border: var(--line); border-radius: 999px; }
.adm-tab { min-height: 44px; padding: 8px 18px; border: 3px solid transparent; border-radius: 999px; background: none; color: var(--ink); font: 700 1rem var(--body); cursor: pointer; }
.adm-tab:hover { background: color-mix(in srgb, var(--blue) 10%, transparent); }
.adm-tab[aria-selected="true"] { background: var(--yellow); color: var(--dark); border-color: var(--ink); }
.adm-panel { margin-top: 22px; padding: 0; display: grid; gap: 16px; } /* padding: see .kpis */
.adm-bar { display: flex; flex-wrap: wrap; align-items: end; gap: 12px 16px; }
.adm-note { flex: 1 1 18rem; font-size: .95rem; opacity: .8; }
.adm-grow { flex: 1 1 auto; }
.adm-count { font-weight: 700; }
.adm-count:empty { display: none; }
.adm-panel input[type="search"], .adm-panel select { font: 500 1rem var(--body); min-height: 48px; padding: 10px 16px; border: var(--line); border-radius: 16px; background: var(--card); color: var(--ink); width: 100%; }
.adm-badge { display: inline-block; padding: 1px 10px; border: 2px solid var(--ink); border-radius: 999px; font-size: .78rem; font-weight: 700; line-height: 1.5; white-space: nowrap; }
.adm-badge.is-draft { background: var(--yellow); color: var(--dark); border-color: var(--dark); }
.adm-badge.is-ok { background: color-mix(in srgb, var(--mint) 55%, var(--card)); }
.adm-badge.is-muted { opacity: .6; border-style: dashed; }
.adm-empty { padding: 12px 4px; opacity: .75; font-weight: 500; }
.icon-btn.adm-icon { width: 40px; height: 40px; }
.icon-btn.adm-icon svg { width: 18px; height: 18px; }
.icon-btn:disabled { opacity: .3; cursor: not-allowed; }
.btn.is-danger { color: var(--danger); border-color: var(--danger); }

/* Darslar */
.adm-mods { list-style: none; margin: 0; padding: 0; display: grid; gap: 18px; }
.adm-mod { background: var(--card); border: var(--line); border-radius: 24px; box-shadow: 4px 4px 0 var(--ink); overflow: hidden; }
.adm-row { display: flex; align-items: center; flex-wrap: wrap; gap: 10px 14px; }
.adm-mod-head { padding: 16px 18px; border-bottom: 2px solid color-mix(in srgb, var(--ink) 18%, transparent); }
.adm-mod.is-draft .mod-n { background: var(--card); color: var(--ink); }
.adm-main { flex: 1 1 14rem; min-width: 0; display: grid; gap: 2px; }
.adm-main small { font-size: .82rem; font-weight: 700; opacity: .7; }
.adm-main strong { font: 800 1.2rem var(--display); overflow-wrap: anywhere; }
.adm-acts { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-left: auto; }
.adm-lessons { list-style: none; margin: 0; padding: 6px 18px 12px; }
.adm-lesson { padding: 10px 0; }
.adm-lesson + .adm-lesson { border-top: 2px dashed color-mix(in srgb, var(--ink) 15%, transparent); }
.adm-ln { flex: 0 0 2ch; font-weight: 800; opacity: .6; }
.adm-lt { font-weight: 700; overflow-wrap: anywhere; }
.adm-tags { display: flex; flex-wrap: wrap; gap: 6px; }

/* Foydalanuvchilar: the table scrolls inside its box, never the page */
.adm-table-wrap { overflow-x: auto; background: var(--card); border: var(--line); border-radius: 22px; }
.adm-table { width: 100%; min-width: 860px; border-collapse: collapse; font-size: .95rem; }
.adm-table th, .adm-table td { padding: 12px 14px; text-align: left; vertical-align: middle; border-bottom: 2px solid color-mix(in srgb, var(--ink) 12%, transparent); }
.adm-table thead th { font-size: .82rem; letter-spacing: .04em; text-transform: uppercase; opacity: .75; white-space: nowrap; }
.adm-table tbody tr:last-child > * { border-bottom: 0; }
.adm-table tbody th { font-weight: 700; min-width: 11rem; }
.adm-table td:nth-child(3) { min-width: 9rem; }
.adm-uname, .adm-email { margin-right: 8px; overflow-wrap: anywhere; }
.adm-td-acts { white-space: nowrap; text-align: right; }
.adm-td-acts .btn + .btn { margin-left: 8px; }

/* So'rovnoma */
.adm-survey { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.adm-resp { background: var(--card); border: var(--line); border-radius: 18px; }
.adm-resp summary { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 16px; padding: 14px 18px; cursor: pointer; }
.adm-resp-name { font-weight: 700; }
.adm-resp-meta { flex: 1 1 auto; font-size: .92rem; opacity: .8; }
.adm-resp-phone { font-weight: 700; text-underline-offset: 3px; }
.adm-resp-date { font-size: .88rem; opacity: .7; }
.adm-answers { margin: 0; padding: 4px 18px 18px; display: grid; gap: 4px; }
.adm-answers dt { margin-top: 10px; font-size: .9rem; font-weight: 700; opacity: .8; }
.adm-answers dd { margin: 0; }
.adm-resp-foot { padding: 0 18px 18px; }

/* Dialogs */
.adm-dialog { width: min(560px, 100% - 24px); max-width: none; max-height: calc(100dvh - 24px); padding: 0; border: var(--line); border-radius: 28px; background: var(--card); color: var(--ink); box-shadow: var(--pop); overflow: auto; overscroll-behavior: contain; }
.adm-dialog.is-wide { width: min(820px, 100% - 24px); }
.adm-dialog::backdrop { background: rgba(22, 18, 63, .6); }
.adm-form { display: grid; gap: 16px; padding: clamp(18px, 3vw, 28px); }
.adm-dialog-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.adm-dialog-head h2 { font-size: 1.5rem; font-weight: 800; }
.adm-dialog-foot { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; padding-top: 8px; }
.adm-form input[type="text"], .adm-form input:not([type]), .adm-form select, .adm-form textarea { width: 100%; font: 500 1rem var(--body); padding: 12px 14px; border: var(--line); border-radius: 14px; background: var(--paper); color: var(--ink); }
.adm-form textarea { resize: vertical; line-height: 1.5; }
.adm-form [aria-invalid="true"] { border-color: var(--danger); }
.adm-grid { display: grid; gap: 16px; }
@media (min-width: 640px) { .adm-grid { grid-template-columns: minmax(0, 1fr) auto; align-items: end; } }
.adm-check { display: inline-flex; align-items: center; gap: 10px; min-height: 48px; font-weight: 700; cursor: pointer; }
.adm-check input { width: 22px; height: 22px; margin: 0; accent-color: var(--blue); }
.adm-box { margin: 0; padding: 16px 18px 18px; border: 2px solid var(--ink); border-radius: 20px; display: grid; gap: 12px; min-width: 0; }
.adm-box legend { padding: 0 8px; font: 800 1.1rem var(--display); }
.adm-video { width: 100%; max-height: 320px; border: 2px solid var(--ink); border-radius: 14px; background: #000; }
.adm-video-status { font-weight: 700; }
.adm-btns { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.adm-file { position: relative; }
.adm-file input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.adm-file:focus-within { outline: 4px solid var(--blue); outline-offset: 3px; }
.adm-file.is-disabled { opacity: .5; pointer-events: none; }

/* Quiz editor */
.adm-quiz { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.qz { padding: 14px; border: 2px dashed color-mix(in srgb, var(--ink) 40%, transparent); border-radius: 16px; display: grid; gap: 10px; }
.qz-opts { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.qz-opt { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: 4px 10px; }
.qz-opt input[type="radio"] { width: 22px; height: 22px; margin: 0; accent-color: var(--blue); }
.qz-opt .field-error { grid-column: 2 / -1; }

@media (max-width: 559px) {
  .adm-tabs { width: 100%; flex-wrap: nowrap; gap: 4px; padding: 4px; }
  .adm-tab { flex: 1 1 auto; min-width: 0; padding: 8px 8px; font-size: .9rem; }
  .adm-mod-head, .adm-lessons { padding-inline: 14px; }
  .adm-acts { margin-left: 0; }
  .adm-dialog { border-radius: 22px; }
  .adm-form { padding: 16px; }
  .adm-box { padding: 12px; }
  .qz { padding: 10px; }
  .qz-opt { gap: 4px 6px; }
  .adm-dialog-foot .btn { flex: 1 1 auto; text-align: center; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}