/* Vibe design system: bright and gamified. Rounded type, chunky 3D buttons, saturated colours, Vibo the robot. */
@font-face { font-family: 'Fredoka'; src: url('/fonts/fredoka.woff2') format('woff2'); font-weight: 300 700; font-display: swap; }
@font-face { font-family: 'Nunito'; src: url('/fonts/nunito.woff2') format('woff2'); font-weight: 200 1000; font-display: swap; }

:root {
  --bg: #ffffff; --soft: #f7f7f7; --card: #ffffff; --line: #e5e5e5; --ink: #3c3c3c; --muted: #777777; --faint: #afafaf;
  --green: #58cc02; --green-d: #58a700; --green-l: #d7ffb8;
  --blue: #1cb0f6; --blue-d: #1899d6; --blue-l: #ddf4ff;
  --purple: #7c4dff; --purple-d: #6a3df0; --purple-l: #efe9ff;
  --yellow: #ffc800; --yellow-d: #e5b400; --yellow-l: #fff5d3;
  --orange: #ff9600; --orange-d: #e08600; --orange-l: #ffefd9;
  --red: #ff4b4b; --red-d: #ea2b2b; --red-l: #ffdfe0;
  --pink: #ff6fae; --pink-d: #e5549a; --pink-l: #ffe3f0;
  --r: 18px; --display: 'Fredoka', 'Nunito', system-ui, sans-serif; --body: 'Nunito', system-ui, sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #131f24; --soft: #1a2a31; --card: #202f36; --line: #37464f; --ink: #f1f7fb; --muted: #a0b0b8; --faint: #6b7d86;
    --green-l: #1f3a12; --blue-l: #10384c; --purple-l: #2b2350; --yellow-l: #3d3410; --orange-l: #40290a; --red-l: #4a1c1e; --pink-l: #45203a; color-scheme: dark; }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; font: 600 16px/1.55 var(--body); background: var(--bg); color: var(--ink); overflow-x: hidden; }
a { color: var(--blue); text-decoration: none; }
h1, h2, h3, .display { font-family: var(--display); font-weight: 700; line-height: 1.15; letter-spacing: -0.01em; }
h1 { font-size: clamp(1.9rem, 4.5vw, 2.6rem); margin: .5em 0 .25em; }
h2 { font-size: clamp(1.35rem, 3vw, 1.7rem); margin: 1.4em 0 .5em; }
h3 { font-size: 1.15rem; margin: 0 0 .35em; }
p { margin: .35em 0 .8em; }
img { max-width: 100%; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 16px; }
.muted { color: var(--muted); } .small { font-size: .88rem; } .center { text-align: center; } .pre { white-space: pre-wrap; }
.lead { font-size: 1.12rem; color: var(--muted); max-width: 640px; font-weight: 600; }
.eyebrow { font: 800 .78rem var(--body); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.hl { color: var(--green); } .hl-blue { color: var(--blue); } .hl-purple { color: var(--purple); } .hl-orange { color: var(--orange); }

/* ---------- header ---------- */
.top { position: sticky; top: 0; z-index: 20; background: var(--bg); border-bottom: 2px solid var(--line); }
.bar { display: flex; align-items: center; gap: 12px; min-height: 64px; }
.brand { display: flex; align-items: center; gap: 8px; font: 700 1.7rem var(--display); color: var(--green); letter-spacing: -.02em; }
.brand svg { width: 38px; height: 38px; }
.top nav { margin-left: auto; display: flex; align-items: center; gap: 4px; }
.top nav a, .top nav .link { white-space: nowrap; font: 800 .9rem var(--body); text-transform: uppercase; letter-spacing: .04em; color: var(--muted); padding: 8px 12px; border-radius: 12px; border: 2px solid transparent; }
.top nav a:hover { background: var(--soft); }
.top nav a.active { color: var(--blue); background: var(--blue-l); border-color: var(--blue); }
.top nav .ni { display: none; }
.chips-top { display: flex; align-items: center; gap: 6px; }
.chip-top { display: flex; align-items: center; gap: 5px; font: 800 1rem var(--body); padding: 6px 10px; border-radius: 12px; }
.chip-top:hover { background: var(--soft); }
.chip-top.streak { color: var(--orange); } .chip-top.xp { color: var(--blue); }
.avatar { display: inline-grid; place-items: center; border-radius: 50%; flex: none; width: 40px; height: 40px; font-size: 1.3rem; border: 3px solid var(--card); box-shadow: 0 0 0 2px var(--line); }
.avatar.lg { width: 76px; height: 76px; font-size: 2.4rem; } .avatar.sm { width: 32px; height: 32px; font-size: 1rem; border-width: 2px; }
@media (max-width: 820px) {
  .top nav.student { position: fixed; left: 0; right: 0; bottom: 0; background: var(--bg); border-top: 2px solid var(--line); justify-content: space-around; padding: 6px 4px calc(6px + env(safe-area-inset-bottom)); gap: 0; z-index: 30; }
  .top nav.student a { display: flex; flex-direction: column; align-items: center; font-size: .65rem; padding: 4px 6px; border-width: 2px; }
  .top nav.student .ni { display: block; font-size: 1.45rem; line-height: 1.2; }
  .top nav.student form { display: none; }
  body.has-tabs { padding-bottom: 78px; }
  .brand span { display: none; }
}

/* ---------- 3D buttons ---------- */
.btn { --c: var(--green); --d: var(--green-d); --t: #fff;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; cursor: pointer;
  font: 800 .95rem var(--body); text-transform: uppercase; letter-spacing: .05em; color: var(--t);
  background: var(--c); border: 0; border-radius: 16px; padding: 13px 22px; box-shadow: 0 4px 0 var(--d);
  transition: transform .06s, box-shadow .06s, filter .1s; position: relative; top: 0; }
.btn:hover { filter: brightness(1.06); }
.btn:active { transform: translateY(4px); box-shadow: 0 0 0 var(--d); }
.btn.blue { --c: var(--blue); --d: var(--blue-d); } .btn.purple { --c: var(--purple); --d: var(--purple-d); }
.btn.yellow { --c: var(--yellow); --d: var(--yellow-d); --t: #3c3c3c; } .btn.orange { --c: var(--orange); --d: var(--orange-d); }
.btn.red, .btn.danger { --c: var(--red); --d: var(--red-d); } .btn.pink { --c: var(--pink); --d: var(--pink-d); }
.btn.white, .btn.ghost { --c: var(--card); --d: var(--line); --t: var(--blue); box-shadow: 0 4px 0 var(--line), inset 0 0 0 2px var(--line); }
.btn.white:active, .btn.ghost:active { box-shadow: inset 0 0 0 2px var(--line); }
.btn.big { font-size: 1.05rem; padding: 16px 30px; border-radius: 18px; }
.btn.small { font-size: .78rem; padding: 8px 14px; border-radius: 12px; box-shadow: 0 3px 0 var(--d); }
.btn.white.small { box-shadow: 0 3px 0 var(--line), inset 0 0 0 2px var(--line); }
.btn.full { width: 100%; }
.btn.google { --c: var(--card); --d: var(--line); --t: var(--ink); width: 100%; box-shadow: 0 4px 0 var(--line), inset 0 0 0 2px var(--line); }
.btn.google b { font: 700 1.2rem var(--display); color: #4285f4; }
.link { background: none; border: 0; font: 800 .9rem var(--body); color: var(--blue); cursor: pointer; padding: 0; text-transform: uppercase; letter-spacing: .04em; }
.link.danger { color: var(--red); }
.inline { display: inline; }
.row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-top: 14px; }
.row.between { justify-content: space-between; } .row.center { justify-content: center; }

/* ---------- cards & bits ---------- */
.card { background: var(--card); border: 2px solid var(--line); border-bottom-width: 4px; border-radius: var(--r); padding: 22px; margin: 18px 0; }
.card.slim { padding: 14px 18px; margin: 10px 0; }
.card.narrow { max-width: 460px; margin: 40px auto; }
.card.c-green { background: var(--green); border-color: var(--green-d); color: #fff; }
.card.c-blue { background: var(--blue); border-color: var(--blue-d); color: #fff; }
.card.c-purple { background: var(--purple); border-color: var(--purple-d); color: #fff; }
.card.c-yellow { background: var(--yellow); border-color: var(--yellow-d); color: #3c3c3c; }
.card.c-orange { background: var(--orange); border-color: var(--orange-d); color: #fff; }
.card.c-pink { background: var(--pink); border-color: var(--pink-d); color: #fff; }
.card.l-green { background: var(--green-l); border-color: var(--green); } .card.l-blue { background: var(--blue-l); border-color: var(--blue); }
.card.l-yellow { background: var(--yellow-l); border-color: var(--yellow); } .card.l-purple { background: var(--purple-l); border-color: var(--purple); }
.card.l-red { background: var(--red-l); border-color: var(--red); } .card.l-orange { background: var(--orange-l); border-color: var(--orange); }
.card[class*=" c-"] .muted { color: rgba(255,255,255,.85); } .card.c-yellow .muted { color: rgba(60,60,60,.75); }
.grid2, .grid3, .grid4 { display: grid; gap: 16px; }
.grid2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid3 { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
.grid4 { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }
.grid2 > .card, .grid3 > .card, .grid4 > .card { margin: 0; }
.tag { display: inline-flex; align-items: center; gap: 4px; font: 800 .74rem var(--body); text-transform: uppercase; letter-spacing: .05em; padding: 4px 10px; border-radius: 99px; background: var(--soft); color: var(--muted); white-space: nowrap; }
.tag.live, .tag.ok { background: var(--green-l); color: var(--green-d); } .tag.submitted { background: var(--yellow-l); color: #b38600; }
.tag.changes, .tag.warn { background: var(--orange-l); color: var(--orange-d); } .tag.action { background: var(--red); color: #fff; }
.tag.building { background: var(--blue-l); color: var(--blue-d); }
.alert { background: var(--red-l); color: var(--red-d); border: 2px solid var(--red); padding: 12px 16px; border-radius: 14px; font-weight: 800; }
.okbox { background: var(--green-l); color: var(--green-d); border: 2px solid var(--green); padding: 12px 16px; border-radius: 14px; font-weight: 800; }
.note { background: var(--yellow-l); color: #8a6a00; border: 2px solid var(--yellow); padding: 12px 16px; border-radius: 14px; font-weight: 700; }
@media (prefers-color-scheme: dark) { .note { color: var(--yellow); } .tag.submitted { color: var(--yellow); } }
.ok { color: var(--green-d); font-weight: 800; margin-left: 10px; }
.bar-xp { height: 16px; border-radius: 99px; background: var(--line); overflow: hidden; position: relative; }
.bar-xp i { display: block; height: 100%; border-radius: 99px; background: var(--green); position: relative; transition: width .4s; }
.bar-xp i::after { content: ''; position: absolute; left: 8px; right: 8px; top: 4px; height: 4px; border-radius: 9px; background: rgba(255,255,255,.35); }
.bar-xp.yellow i { background: var(--yellow); } .bar-xp.blue i { background: var(--blue); } .bar-xp.sm { height: 10px; } .bar-xp.sm i::after { display: none; }

/* ---------- forms ---------- */
label { display: block; margin: 14px 0; font-weight: 800; }
label small { font-weight: 600; color: var(--muted); }
input, textarea, select { display: block; width: 100%; margin-top: 6px; padding: 13px 15px; border: 2px solid var(--line); border-radius: 14px; background: var(--soft); color: var(--ink); font: 700 1rem var(--body); }
input:focus, textarea:focus, select:focus { outline: none; border-color: var(--blue); background: var(--card); }
input[type=file] { padding: 10px; }
textarea.code { font: 500 .85rem ui-monospace, Consolas, monospace; }
label.chk { display: flex; gap: 10px; align-items: flex-start; font-weight: 700; }
label.chk input { width: 22px; height: 22px; margin-top: 1px; accent-color: var(--green); flex: none; }
.grid-form { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; align-items: end; }
.grid-form .span2 { grid-column: span 2; justify-self: start; }
.grid-2col { display: grid; grid-template-columns: 2fr 1fr; gap: 0 16px; }
@media (max-width: 640px) { .grid-form, .grid-2col { grid-template-columns: 1fr; } .grid-form .span2 { grid-column: auto; } }
.shot-preview { display: block; max-height: 220px; border-radius: 14px; margin-top: 10px; border: 2px solid var(--line); }
details > summary { cursor: pointer; list-style: none; font-weight: 800; }
details > summary::-webkit-details-marker { display: none; }
details > summary::before { content: '▸ '; color: var(--faint); } details[open] > summary::before { content: '▾ '; }
.otp { display: flex; gap: 8px; justify-content: center; margin: 18px 0; }
.otp input { width: 50px; height: 62px; text-align: center; font: 700 1.8rem var(--display); padding: 0; margin: 0; border-bottom-width: 4px; }
.otp-hidden { position: absolute; opacity: 0; pointer-events: none; height: 0; }
.devcode { background: var(--yellow-l); border: 2px dashed var(--yellow-d); border-radius: 14px; padding: 10px; text-align: center; font-weight: 800; }
.devcode b { font: 700 1.6rem var(--display); letter-spacing: .2em; }
.or { display: flex; align-items: center; gap: 12px; color: var(--faint); font-weight: 800; margin: 20px 0; text-transform: uppercase; font-size: .8rem; }
.or::before, .or::after { content: ''; flex: 1; height: 2px; background: var(--line); }

/* ---------- Vibo ---------- */
.vibo { display: block; overflow: visible; }
.vibo-bulb { animation: glow 1.6s ease-in-out infinite; }
@keyframes glow { 50% { opacity: .55; } }
.vibo-cheer { animation: hop 1s ease-in-out infinite; }
@keyframes hop { 50% { transform: translateY(-6px); } }
.vibo-says { display: flex; align-items: flex-end; gap: 10px; }
.vibo-says .speech { position: relative; background: var(--card); border: 2px solid var(--line); border-radius: 18px; padding: 12px 16px; font-weight: 800; margin-bottom: 28px; }
.vibo-says .speech::before { content: ''; position: absolute; left: -10px; bottom: 14px; width: 16px; height: 16px; background: var(--card); border-left: 2px solid var(--line); border-bottom: 2px solid var(--line); transform: rotate(45deg); }
@media (prefers-reduced-motion: reduce) { .vibo-bulb, .vibo-cheer, .node .start, .float, .caret { animation: none !important; } }

/* ---------- landing ---------- */
.hero { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; padding: 40px 0 10px; }
.hero h1 { font-size: clamp(2.5rem, 6.5vw, 4.2rem); line-height: 1.02; margin: .15em 0 .3em; }
@media (max-width: 860px) { .hero { grid-template-columns: 1fr; padding-top: 20px; } }
.stage-demo { position: relative; display: grid; justify-items: center; }
.stage-demo > .vibo { position: absolute; left: -6px; bottom: 26px; z-index: 3; }
.bubble { background: var(--card); border: 2px solid var(--line); border-bottom-width: 4px; border-radius: 18px; padding: 12px 16px; font-weight: 700; font-size: .92rem; min-height: 74px; max-width: 340px; width: 100%; }
.bubble .who { font-size: .72rem; font-weight: 800; color: var(--purple); text-transform: uppercase; letter-spacing: .06em; display: block; }
.caret { display: inline-block; width: 2px; height: 1em; background: var(--ink); vertical-align: -2px; animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.phone { margin-top: 14px; width: 260px; height: 460px; border-radius: 36px; padding: 10px; background: #1d1340; box-shadow: 0 8px 0 #0f0a24; position: relative; }
.phone iframe { width: 100%; height: 100%; border: 0; border-radius: 26px; background: #0b1033; }
.float { position: absolute; z-index: 4; animation: float 3.5s ease-in-out infinite; }
@keyframes float { 50% { translate: 0 -8px; } }
.pill { display: inline-flex; align-items: center; gap: 6px; font: 800 .85rem var(--body); padding: 7px 14px; border-radius: 99px; color: #fff; background: var(--purple); box-shadow: 0 3px 0 var(--purple-d); }
.pill.green { background: var(--green); box-shadow: 0 3px 0 var(--green-d); } .pill.orange { background: var(--orange); box-shadow: 0 3px 0 var(--orange-d); }
.pill.blue { background: var(--blue); box-shadow: 0 3px 0 var(--blue-d); } .pill.yellow { background: var(--yellow); color: #3c3c3c; box-shadow: 0 3px 0 var(--yellow-d); }
.worlds { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 12px; margin: 26px 0; }
.world { border-radius: 20px; padding: 16px 10px; text-align: center; color: #fff; border-bottom: 5px solid rgba(0,0,0,.18); }
.world .wi { font-size: 2.1rem; } .world b { display: block; font: 700 1.05rem var(--display); } .world small { font-weight: 700; opacity: .92; line-height: 1.25; display: block; }
@media (max-width: 700px) { .worlds { grid-template-columns: repeat(2, 1fr); } .world:last-child { grid-column: span 2; } }
.w-dream { background: var(--yellow); color: #3c3c3c; } .w-plan { background: var(--blue); } .w-build { background: var(--orange); } .w-fix { background: var(--pink); } .w-launch { background: var(--purple); }
.feature { text-align: center; }
.feature .fi { font-size: 2.6rem; }

/* ---------- student home: path + side ---------- */
.home-grid { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 28px; align-items: start; }
@media (max-width: 900px) { .home-grid { grid-template-columns: 1fr; } .side { position: static !important; } }
.side { position: sticky; top: 84px; display: flex; flex-direction: column; gap: 14px; }
.side .card { margin: 0; }
.unit { border-radius: 18px; padding: 16px 20px; color: #fff; margin: 26px 0 8px; display: flex; align-items: center; justify-content: space-between; gap: 12px; border-bottom: 5px solid rgba(0,0,0,.18); }
.unit b { font: 700 1.25rem var(--display); display: block; } .unit small { font-weight: 800; opacity: .9; }
.unit.locked { filter: grayscale(1); opacity: .45; }
.unit .ui { font-size: 2.2rem; }
.u-dream { background: var(--yellow); color: #3c3c3c; } .u-plan { background: var(--blue); } .u-build { background: var(--orange); } .u-fix { background: var(--pink); } .u-launch { background: var(--purple); }
.path { display: flex; flex-direction: column; align-items: center; gap: 22px; padding: 18px 0 6px; }
.node { --x: 0px; --c: var(--green); --d: var(--green-d); translate: var(--x) 0; position: relative; width: 72px; height: 66px; border-radius: 50%;
  display: grid; place-items: center; font-size: 1.8rem; color: #fff; background: var(--c); box-shadow: 0 7px 0 var(--d); transition: transform .08s; }
.node:hover { transform: translateY(-2px); }
.node:active { transform: translateY(5px); box-shadow: 0 2px 0 var(--d); }
.node.done { --c: var(--yellow); --d: var(--yellow-d); }
.node.current { width: 82px; height: 76px; font-size: 2.1rem; }
.node.current::before { content: ''; position: absolute; inset: -11px; border-radius: 50%; border: 6px solid var(--line); border-top-color: var(--c); border-right-color: var(--c); }
.node.locked { --c: var(--line); --d: #cfcfcf; color: var(--faint); cursor: default; font-size: 1.4rem; }
.node.locked:hover, .node.locked:active { transform: none; box-shadow: 0 7px 0 var(--d); }
@media (prefers-color-scheme: dark) { .node.locked { --d: #2a383f; } }
.node .lbl { position: absolute; left: calc(100% + 18px); top: 50%; translate: 0 -50%; white-space: nowrap; font: 800 .92rem var(--body); color: var(--ink); }
.node.left .lbl { left: auto; right: calc(100% + 18px); text-align: right; }
.node.locked .lbl { color: var(--faint); }
.node .start { position: absolute; top: -50px; left: 50%; translate: -50% 0; background: var(--card); color: var(--c); border: 2px solid var(--line); font: 800 .85rem var(--body); padding: 7px 14px; border-radius: 12px; text-transform: uppercase; letter-spacing: .05em; animation: bob 1.3s ease-in-out infinite; white-space: nowrap; }
.node .start::after { content: ''; position: absolute; bottom: -8px; left: 50%; translate: -50% 0; border: 7px solid transparent; border-top-color: var(--line); border-bottom: 0; }
@keyframes bob { 50% { translate: -50% -5px; } }
.path.s-dream .node.current { --c: var(--green); --d: var(--green-d); } .path.s-plan .node.current { --c: var(--blue); --d: var(--blue-d); }
.path.s-build .node.current { --c: var(--orange); --d: var(--orange-d); } .path.s-fix .node.current { --c: var(--pink); --d: var(--pink-d); }
.path.s-launch .node.current { --c: var(--purple); --d: var(--purple-d); }
@media (max-width: 520px) { .node { translate: calc(var(--x) * .45) 0; } .node .lbl { font-size: .8rem; white-space: normal; width: 120px; line-height: 1.2; } }
.stat-tiles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.stile { text-align: center; padding: 10px 6px; border: 2px solid var(--line); border-radius: 16px; }
.stile b { display: block; font: 700 1.5rem var(--display); } .stile small { font-weight: 800; color: var(--muted); font-size: .72rem; text-transform: uppercase; letter-spacing: .04em; }
.stile.fire b { color: var(--orange); } .stile.xp b { color: var(--blue); } .stile.lv b { color: var(--purple); }
.mini { width: 100%; height: 240px; border: 2px solid var(--line); border-radius: 14px; background: #fff; display: block; }
.feed { display: flex; flex-direction: column; gap: 10px; }
.feed-item { display: grid; grid-template-columns: 40px 1fr; gap: 12px; align-items: start; padding: 12px; border: 2px solid var(--line); border-radius: 16px; background: var(--card); }
.feed-item p { margin: 0; font-size: .94rem; } .feed-item small { color: var(--faint); font-weight: 700; }
.reacts { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px; }
.reacts form { display: inline; }
.react { font: 800 .85rem var(--body); border: 2px solid var(--line); border-bottom-width: 3px; background: var(--card); color: var(--ink); border-radius: 12px; padding: 2px 9px; cursor: pointer; }
.react.on { background: var(--blue-l); border-color: var(--blue); color: var(--blue-d); }
.react:active { transform: translateY(2px); border-bottom-width: 1px; }

/* ---------- mission ---------- */
.crumbs { color: var(--faint); font-size: .8rem; font-weight: 800; margin-top: 20px; text-transform: uppercase; letter-spacing: .06em; }
.crumbs a { color: var(--blue); }
.mission-top { display: flex; align-items: center; gap: 14px; margin-top: 18px; }
.mission-top .bar-xp { flex: 1; }
.mission-top .x { font-size: 1.7rem; line-height: 1; color: var(--faint); font-weight: 800; }
.mission-head { display: flex; align-items: center; gap: 12px; margin: 10px 0 0; }
.mission-head h1 { margin: 0; }
.stepper { display: grid; gap: 14px; margin: 18px 0; }
.step { display: grid; grid-template-columns: 50px 1fr; gap: 14px; align-items: start; padding: 18px; border: 2px solid var(--line); border-bottom-width: 4px; border-radius: var(--r); background: var(--card); }
.step .sn { width: 46px; height: 46px; border-radius: 14px; display: grid; place-items: center; font: 700 1.3rem var(--display); color: #fff; background: var(--blue); box-shadow: 0 3px 0 var(--blue-d); }
.step.s2 .sn { background: var(--purple); box-shadow: 0 3px 0 var(--purple-d); } .step.s3 .sn { background: var(--green); box-shadow: 0 3px 0 var(--green-d); }
.step h3 { margin: 8px 0 2px; }
.step .row { margin-top: 10px; }
@media (max-width: 520px) { .step { grid-template-columns: 1fr; } }
.tips { list-style: none; padding: 12px 16px; margin: 12px 0 0; background: var(--yellow-l); border-radius: 14px; border: 2px solid var(--yellow); }
.tips li { margin: 4px 0; font-weight: 700; }
.steps-list { margin: 6px 0 0; padding-left: 20px; } .steps-list li { margin: 3px 0; font-weight: 700; }

/* prompt anatomy */
.anatomy { display: grid; gap: 8px; margin: 12px 0; }
.part { border-radius: 14px; padding: 10px 14px; background: var(--soft); border: 2px solid var(--line); transition: opacity .25s, filter .25s; }
.part .pl { display: inline-flex; align-items: center; gap: 5px; font: 800 .7rem var(--body); text-transform: uppercase; letter-spacing: .07em; padding: 3px 9px; border-radius: 8px; margin-bottom: 4px; color: #fff; }
.part .pt { display: block; white-space: pre-wrap; font: 700 .95rem/1.5 var(--body); }
.part.role { background: var(--purple-l); border-color: var(--purple); } .part.role .pl { background: var(--purple); }
.part.context { background: var(--blue-l); border-color: var(--blue); } .part.context .pl { background: var(--blue); }
.part.task { background: var(--pink-l); border-color: var(--pink); } .part.task .pl { background: var(--pink); }
.part.rules { background: var(--green-l); border-color: var(--green); } .part.rules .pl { background: var(--green); }
.part.check { background: var(--yellow-l); border-color: var(--yellow); } .part.check .pl { background: var(--yellow-d); }
.part.lazy { background: var(--soft); border-style: dashed; } .part.lazy .pl { background: var(--faint); }
.part.off { opacity: .3; filter: grayscale(1); border-style: dashed; }
.legend { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 8px; margin-top: 10px; font-size: .88rem; }
.legend div { padding: 8px 12px; border-radius: 12px; background: var(--soft); }
.prompt-raw { display: none; }

/* mission complete */
.complete { text-align: center; padding: 30px 10px 10px; }
.complete h1 { color: var(--yellow-d); font-size: clamp(2rem, 6vw, 3rem); }
.complete .vibo { margin: 0 auto; }
.reward-row { display: flex; justify-content: center; gap: 14px; margin: 22px 0; flex-wrap: wrap; }
.reward { width: 150px; border-radius: 16px; border: 2px solid var(--c); overflow: hidden; }
.reward .rt { background: var(--c); color: #fff; font: 800 .75rem var(--body); text-transform: uppercase; letter-spacing: .06em; padding: 6px; }
.reward .rv { font: 700 1.8rem var(--display); padding: 10px; color: var(--c); background: var(--card); }
.reward.xp { --c: var(--yellow-d); } .reward.lvl { --c: var(--blue); } .reward.fire { --c: var(--orange); }

/* idea deck */
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0; }
.chip { font: 800 .85rem var(--body); text-transform: uppercase; letter-spacing: .04em; border: 2px solid var(--line); border-bottom-width: 4px; background: var(--card); color: var(--muted); border-radius: 14px; padding: 8px 14px; cursor: pointer; position: relative; user-select: none; display: inline-block; }
.chip.active, .chip:has(input:checked) { background: var(--blue-l); border-color: var(--blue); color: var(--blue-d); }
.chip:active { transform: translateY(2px); border-bottom-width: 2px; }
.chip input { position: absolute; opacity: 0; pointer-events: none; }
.deck { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 14px; }
.idea { display: flex; flex-direction: column; gap: 4px; padding: 16px; background: var(--card); border: 2px solid var(--line); border-bottom-width: 5px; border-radius: 20px; color: var(--ink); transition: transform .08s; }
.idea:hover { transform: translateY(-3px); border-color: var(--blue); }
.idea .e { font-size: 2.4rem; } .idea b { font: 700 1.08rem var(--display); } .idea small { color: var(--muted); font-weight: 700; line-height: 1.35; }
.idea.own { border-style: dashed; border-color: var(--green); background: var(--green-l); }
.idea.sel { border-color: var(--blue); background: var(--blue-l); }
.idea[hidden] { display: none; }
@media (max-width: 480px) { .deck { grid-template-columns: 1fr 1fr; gap: 10px; } .idea { padding: 12px; } .idea .e { font-size: 1.8rem; } .idea small { font-size: .78rem; } }

/* avatar picker */
.pick-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(62px, 1fr)); gap: 10px; }
.pick { position: relative; display: grid; place-items: center; height: 62px; border: 2px solid var(--line); border-bottom-width: 4px; border-radius: 16px; font-size: 2rem; cursor: pointer; background: var(--card); }
.pick input, .swatch input { position: absolute; opacity: 0; pointer-events: none; }
.pick:has(input:checked) { border-color: var(--blue); background: var(--blue-l); }
.swatches { display: grid; grid-template-columns: repeat(auto-fill, minmax(52px, 1fr)); gap: 10px; }
.swatch { height: 52px; border-radius: 16px; cursor: pointer; position: relative; box-shadow: 0 4px 0 rgba(0,0,0,.18); }
.swatch:has(input:checked) { outline: 4px solid var(--ink); outline-offset: 3px; }

/* ---------- my app + x-ray ---------- */
.preview { width: 100%; height: 540px; border: 2px solid var(--line); border-radius: 16px; background: #fff; display: block; }
.live-banner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 14px; }
.live-banner .url { font: 700 1.25rem var(--display); word-break: break-all; }
.xstats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; margin: 14px 0; }
.xstat { border-radius: 18px; padding: 14px; color: #fff; border-bottom: 5px solid rgba(0,0,0,.18); }
.xstat b { display: block; font: 700 2rem var(--display); line-height: 1; } .xstat small { font-weight: 800; }
.xstat.html { background: var(--blue); } .xstat.css { background: var(--pink); } .xstat.js { background: var(--green); } .xstat.total { background: var(--yellow); color: #3c3c3c; }
@media (max-width: 640px) { .xstats { grid-template-columns: repeat(2, 1fr); } }
.xsec { border: 2px solid var(--line); border-bottom-width: 4px; border-radius: 18px; overflow: hidden; margin: 14px 0; background: var(--card); }
.xsec > summary { padding: 14px 16px; display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.xsec > summary::before { content: none; }
.xsec .xi { width: 40px; height: 40px; border-radius: 12px; display: grid; place-items: center; font-size: 1.3rem; }
.xsec.html .xi { background: var(--blue-l); } .xsec.css .xi { background: var(--pink-l); } .xsec.js .xi { background: var(--green-l); }
.xsec .xd { font-weight: 700; color: var(--muted); font-size: .9rem; flex-basis: 100%; }
.xsec pre { margin: 0; border: 0; border-top: 2px solid var(--line); border-radius: 0; max-height: 360px; overflow: auto; }
pre { background: var(--soft); border: 2px solid var(--line); border-radius: 14px; padding: 14px; overflow-x: auto; font: 500 .85rem/1.5 ui-monospace, Consolas, monospace; }
.diff { font-weight: 800; } .diff .add { color: var(--green-d); } .diff .rem { color: var(--red); }

/* ---------- Prompt Lab: power-up ---------- */
.powerup { display: grid; grid-template-columns: minmax(0, 1fr) 290px; grid-template-areas: "top app" "parts app"; gap: 6px 26px; align-items: start; }
.pu-top { grid-area: top; } .pu-parts { grid-area: parts; } .powerup .app-col { grid-area: app; }
@media (max-width: 860px) { .powerup { grid-template-columns: 1fr; grid-template-areas: "top" "app" "parts"; } .powerup .app-col { position: static; } .app-frame { height: 420px; max-width: 260px; } }
.levels { display: flex; gap: 8px; flex-wrap: wrap; margin: 6px 0 12px; }
.lvl-btn { width: 52px; height: 52px; border-radius: 16px; border: 0; font: 700 1.25rem var(--display); color: var(--faint); background: var(--card); box-shadow: inset 0 0 0 2px var(--line), 0 4px 0 var(--line); cursor: pointer; transition: transform .08s; }
.lvl-btn.done { color: #fff; background: var(--yellow); box-shadow: 0 4px 0 var(--yellow-d); }
.lvl-btn.on { color: #fff; background: var(--green); box-shadow: 0 4px 0 var(--green-d); transform: scale(1.1); }
.lvl-btn:active { transform: translateY(3px); }
.meter { display: flex; align-items: center; gap: 12px; margin: 10px 0; }
.meter .bar-xp { flex: 1; }
.meter b { font: 700 1.05rem var(--display); color: var(--green-d); min-width: 90px; text-align: right; }
.app-col { position: sticky; top: 84px; }
.app-frame { width: 100%; max-width: 290px; height: 500px; margin: 0 auto; border-radius: 32px; padding: 9px; background: #1d1340; box-shadow: 0 7px 0 #0f0a24; }
.app-frame iframe { width: 100%; height: 100%; border: 0; border-radius: 24px; background: #fff; }
.lvl-caption { font-weight: 800; margin: 16px 0 0; text-align: center; min-height: 3em; }
.builder fieldset { border: 0; padding: 0; margin: 0 0 18px; }
.builder legend { font: 700 1.1rem var(--display); margin-bottom: 8px; }
.builder .chips { display: flex; flex-wrap: wrap; gap: 8px; }

/* ---------- showcase ---------- */
.show { display: flex; flex-direction: column; padding: 0; overflow: hidden; }
.show .thumb-frame { position: relative; height: 220px; overflow: hidden; border-bottom: 2px solid var(--line); background: #fff; }
.show .thumb-frame iframe { width: 200%; height: 440px; border: 0; transform: scale(.5); transform-origin: 0 0; pointer-events: none; }
.show .body { padding: 16px; display: flex; flex-direction: column; gap: 4px; flex: 1; }
.show h3 { margin: 0; font-size: 1.25rem; }
.tagline { font-style: italic; margin: 0; color: var(--muted); }
.show .row { margin-top: auto; padding-top: 10px; }

/* ---------- launch ---------- */
.launch-hero { text-align: center; padding: 24px 10px; }
.launch-hero .vibo { margin: 0 auto; }
.share-card { max-width: 400px; margin: 18px auto; text-align: center; padding: 26px; border-radius: 26px; background: var(--purple); color: #fff; box-shadow: 0 7px 0 var(--purple-d); }
.share-card .em { font-size: 4rem; } .share-card h2 { margin: .1em 0; font-size: 2rem; }
.share-card .u { font-weight: 800; background: #fff; color: var(--purple); display: inline-block; padding: 6px 12px; border-radius: 12px; word-break: break-all; }
.confetti { position: fixed; inset: 0; pointer-events: none; z-index: 50; overflow: hidden; }
.confetti i { position: absolute; top: -20px; width: 10px; height: 16px; animation: fall linear forwards; }
@keyframes fall { to { transform: translateY(110vh) rotate(720deg); } }

/* ---------- teacher ---------- */
.t-head { display: flex; align-items: center; justify-content: space-between; gap: 14px; flex-wrap: wrap; }
.tabs { display: flex; gap: 6px; flex-wrap: wrap; margin: 10px 0 20px; border-bottom: 2px solid var(--line); padding-bottom: 12px; }
.tabs a { font: 800 .85rem var(--body); text-transform: uppercase; letter-spacing: .04em; color: var(--muted); padding: 9px 14px; border-radius: 12px; border: 2px solid transparent; display: inline-flex; align-items: center; gap: 6px; }
.tabs a:hover { background: var(--soft); }
.tabs a.active { color: var(--blue); background: var(--blue-l); border-color: var(--blue); }
.tabs .count { background: var(--red); color: #fff; border-radius: 99px; padding: 1px 7px; font-size: .72rem; }
.todo { display: grid; grid-template-columns: 56px 1fr auto; gap: 14px; align-items: center; padding: 14px 16px; border: 2px solid var(--line); border-bottom-width: 4px; border-radius: 18px; margin: 10px 0; background: var(--card); }
.todo .ti { width: 52px; height: 52px; border-radius: 16px; display: grid; place-items: center; font-size: 1.6rem; }
.todo h3 { margin: 0; font-size: 1.05rem; } .todo p { margin: 2px 0 0; color: var(--muted); font-weight: 700; font-size: .92rem; }
@media (max-width: 600px) { .todo { grid-template-columns: 44px 1fr; } .todo > :last-child { grid-column: span 2; } }
.kpis { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; margin: 12px 0 6px; }
.kpi { border: 2px solid var(--line); border-bottom-width: 4px; border-radius: 18px; padding: 14px 16px; background: var(--card); }
.kpi b { display: block; font: 700 2rem var(--display); line-height: 1.05; } .kpi small { font-weight: 800; color: var(--muted); text-transform: uppercase; font-size: .72rem; letter-spacing: .05em; }
.kpi.green b { color: var(--green-d); } .kpi.blue b { color: var(--blue); } .kpi.purple b { color: var(--purple); } .kpi.orange b { color: var(--orange); }
@media (max-width: 640px) { .kpis { grid-template-columns: repeat(2, 1fr); } }
.scard { display: flex; flex-direction: column; gap: 10px; padding: 16px; border: 2px solid var(--line); border-bottom-width: 4px; border-radius: 18px; background: var(--card); color: var(--ink); transition: transform .08s; }
.scard:hover { transform: translateY(-2px); border-color: var(--blue); }
.scard .top-row { display: flex; align-items: center; gap: 12px; }
.scard .who b { display: block; font: 700 1.1rem var(--display); } .scard .who small { color: var(--muted); font-weight: 700; }
.ring { --p: 0; width: 54px; height: 54px; border-radius: 50%; display: grid; place-items: center; background: conic-gradient(var(--green) calc(var(--p) * 1%), var(--line) 0); flex: none; margin-left: auto; }
.ring span { width: 40px; height: 40px; border-radius: 50%; background: var(--card); display: grid; place-items: center; font: 800 .8rem var(--body); }
.table-wrap { overflow-x: auto; background: var(--card); border: 2px solid var(--line); border-bottom-width: 4px; border-radius: var(--r); }
table { border-collapse: collapse; width: 100%; font-size: .93rem; }
th, td { text-align: left; padding: 12px 14px; border-bottom: 2px solid var(--line); vertical-align: middle; }
tr:last-child td { border-bottom: 0; }
th { font: 800 .74rem var(--body); text-transform: uppercase; letter-spacing: .05em; color: var(--muted); }
.inline-form { display: flex; gap: 6px; } .inline-form input { margin: 0; min-width: 170px; }
.progress { height: 12px; border-radius: 99px; overflow: hidden; background: var(--line); margin: 10px 0 4px; }
.progress div { height: 100%; background: var(--green); border-radius: 99px; }
.progress.sm { height: 9px; width: 80px; display: inline-block; vertical-align: middle; margin: 0 8px 0 0; }
.thumb { max-height: 140px; border-radius: 12px; border: 2px solid var(--line); margin-top: 6px; }
.shots { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; }
.shots figure { margin: 0; } .shots img { border-radius: 14px; border: 2px solid var(--line); }
.shots figcaption { font-size: .85rem; color: var(--muted); font-weight: 700; }
.reply { background: var(--blue-l); border-color: var(--blue); }
.feedback { background: var(--orange-l); border-color: var(--orange); }
.danger-zone { border-color: var(--red); }
.preview-banner { background: var(--purple); color: #fff; text-align: center; font-weight: 800; padding: 8px 12px; font-size: .9rem; }
.preview-banner form { display: inline; }
.preview-banner button { background: #fff; color: var(--purple); border: 0; border-radius: 10px; font: 800 .78rem var(--body); padding: 5px 11px; margin-left: 10px; cursor: pointer; text-transform: uppercase; letter-spacing: .04em; }
.prose h2 { font-size: 1.25rem; }
.empty { text-align: center; padding: 30px; }
.empty .vibo { margin: 0 auto 8px; }
.foot { color: var(--faint); font-size: .88rem; padding: 40px 16px 28px; text-align: center; font-weight: 700; }
.foot a { color: var(--faint); }
.center .vibo, .center > .vibo { margin-left: auto; margin-right: auto; }

@media (max-width: 520px) { .top nav:not(.student) a, .top nav:not(.student) .link { font-size: .74rem; padding: 7px 8px; } .top nav:not(.student) .btn.small { padding: 7px 10px; } .bar { gap: 6px; } }
@media (max-width: 520px) { .levels { gap: 6px; } .lvl-btn { width: 44px; height: 46px; font-size: 1.1rem; border-radius: 13px; } .meter .eyebrow { display: none; } }