/* CAD Copilot - shared styles for the landing page and the workspace. Dark by default. */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=Inter:wght@400;500;600&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root, [data-theme="dark"] {
  --bg: #060A13; --bg2: #0B1220; --panel: #0E1626; --panel-solid: #0F1728; --border: rgba(120,170,255,0.14);
  --text: #E6EDF7; --muted: #8B9AB5; --accent: #4CC9F0; --accent2: #8B5CF6;
  --good: #34D399; --bad: #F87171; --warn: #F5A524; --gold: #F5A524;
  --grid: rgba(76,201,240,0.055); --glow: rgba(76,201,240,0.35); --user: rgba(76,201,240,0.10);
  --img-filter: invert(0.92) hue-rotate(180deg) saturate(1.3); --shadow: rgba(0,0,0,.6);
  color-scheme: dark;
}
[data-theme="light"] {
  --bg: #F3F6FB; --bg2: #FFFFFF; --panel: #FFFFFF; --panel-solid: #FFFFFF; --border: rgba(25,55,110,0.13);
  --text: #0F1B2D; --muted: #5A6A84; --accent: #0A7BC2; --accent2: #6D4AE6;
  --good: #0F9D6B; --bad: #D64545; --warn: #C77700; --gold: #C77700;
  --grid: rgba(10,123,194,0.06); --glow: rgba(10,123,194,0.22); --user: rgba(10,123,194,0.07);
  --img-filter: none; --shadow: rgba(20,40,80,.18);
  color-scheme: light;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; }
body {
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif; color: var(--text); background: var(--bg);
  background-image: linear-gradient(var(--grid) 1px, transparent 1px), linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 32px 32px; min-height: 100vh; -webkit-font-smoothing: antialiased;
}
body::before {
  content: ""; position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(38% 32% at 18% 16%, color-mix(in srgb, var(--accent) 16%, transparent), transparent 70%),
    radial-gradient(34% 30% at 85% 12%, color-mix(in srgb, var(--accent2) 16%, transparent), transparent 70%),
    radial-gradient(40% 35% at 60% 95%, color-mix(in srgb, var(--accent) 9%, transparent), transparent 70%);
}
h1, h2, h3, .display { font-family: 'Space Grotesk', sans-serif; letter-spacing: -0.02em; }
code, pre, .mono { font-family: 'JetBrains Mono', ui-monospace, monospace; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.wrap { max-width: 1280px; margin: 0 auto; padding: 0 24px; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .45rem; cursor: pointer;
  font: 500 .92rem 'Inter', sans-serif; color: var(--text); background: var(--panel); border: 1px solid var(--border);
  border-radius: 12px; padding: .62rem 1.05rem; white-space: nowrap;
  transition: transform .18s cubic-bezier(.2,.8,.2,1), border-color .2s, box-shadow .25s, background .2s;
}
.btn:hover { transform: translateY(-2px); border-color: var(--accent); box-shadow: 0 8px 28px -8px var(--glow); }
.btn:active { transform: translateY(0) scale(.98); }
.btn.primary { background: linear-gradient(120deg, var(--accent), var(--accent2)); color: #fff; border: none; font-weight: 600; }
.btn.primary:hover { box-shadow: 0 12px 34px -10px var(--glow); }
.btn.round { border-radius: 999px; }
.btn.block { width: 100%; }
.btn[disabled] { opacity: .5; pointer-events: none; }

/* ---------- shared bits ---------- */
.brand { font-family: 'Space Grotesk', sans-serif; font-weight: 700; font-size: 1.25rem; display: flex; align-items: center; gap: .5rem; }
.grad { background: linear-gradient(100deg, var(--accent), var(--accent2), var(--accent)); background-size: 200% auto;
  -webkit-background-clip: text; background-clip: text; color: transparent; }
.grad.anim { animation: shimmer 6s linear infinite; }
@keyframes shimmer { to { background-position: 200% center; } }
.pill { display: inline-flex; align-items: center; gap: .5rem; padding: .32rem .85rem; border-radius: 999px;
  font-size: .8rem; font-weight: 500; border: 1px solid var(--border); background: var(--panel); }
.pill .sub { color: var(--muted); }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--good); position: relative; flex: none; }
.dot::after { content: ""; position: absolute; inset: 0; border-radius: 50%; background: inherit; animation: ping 1.8s cubic-bezier(0,0,.2,1) infinite; }
.dot.off { background: var(--warn); } .dot.err { background: var(--bad); }
@keyframes ping { 75%, 100% { transform: scale(2.6); opacity: 0; } }
.eyebrow { font-family: 'Space Grotesk', sans-serif; font-size: .78rem; font-weight: 600; letter-spacing: .16em; text-transform: uppercase; color: var(--accent); }
.section-title { font-family: 'Space Grotesk', sans-serif; font-weight: 700; font-size: clamp(1.6rem, 3vw, 2.2rem); letter-spacing: -.02em; margin: .3rem 0; }
.section-sub { color: var(--muted); max-width: 640px; margin: 0 0 1.4rem; }
.t-db { --tc: var(--gold); } .t-plan { --tc: var(--good); } .t-ckt { --tc: var(--accent2); }
@keyframes fadeUp { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }
@keyframes float { 50% { transform: translateY(-8px); } }
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s cubic-bezier(.2,.8,.2,1), transform .7s cubic-bezier(.2,.8,.2,1); }
.reveal.in { opacity: 1; transform: none; }

/* ---------- nav ---------- */
.nav { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 18px 0; }
.nav .actions { display: flex; gap: .6rem; }

/* ---------- hero ---------- */
.hero { text-align: center; padding: 2.4rem 0 1.6rem; animation: fadeUp .8s cubic-bezier(.2,.8,.2,1) both; }
.hero h1 { font-weight: 700; font-size: clamp(2.3rem, 4.6vw, 3.8rem); line-height: 1.05; letter-spacing: -.04em; margin: .9rem 0 .8rem; }
.hero p.lead { color: var(--muted); font-size: 1.1rem; max-width: 620px; line-height: 1.6; margin: 0 auto 1.4rem; }
.hl { color: var(--tc); position: relative; white-space: nowrap; }
.hl::after { content: ""; position: absolute; left: 0; right: 0; bottom: .02em; height: .1em; border-radius: 4px; background: var(--tc);
  opacity: .55; transform-origin: left; animation: underline .7s cubic-bezier(.2,.8,.2,1) both; }
.hl.t-db::after { animation-delay: .35s; } .hl.t-plan::after { animation-delay: .55s; } .hl.t-ckt::after { animation-delay: .75s; }
@keyframes underline { from { transform: scaleX(0); } }
.try-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: .6rem; max-width: 640px; margin: 0 auto; }
.try-row .btn.t-plan, .try-row .btn.t-ckt { border: 1.5px solid color-mix(in srgb, var(--tc) 60%, transparent); font-weight: 600; }
.try-row .btn.t-plan:hover, .try-row .btn.t-ckt:hover { box-shadow: 0 10px 28px -10px color-mix(in srgb, var(--tc) 60%, transparent); }
.trust { display: flex; gap: 1.6rem; justify-content: center; flex-wrap: wrap; color: var(--muted); font-size: .85rem; margin: 2rem 0 3rem; }
.trust span::before { content: "✓ "; color: var(--good); font-weight: 700; }

/* ---------- trio: all three drawing types side by side ---------- */
.trio { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.1rem; margin: .4rem 0 0; }
.trio-item { display: block; border-radius: 24px; padding: .7rem .7rem .2rem; background: color-mix(in srgb, var(--tc) 5%, transparent);
  border: 1px solid color-mix(in srgb, var(--tc) 30%, transparent); animation: fadeUp .8s cubic-bezier(.2,.8,.2,1) both;
  transition: transform .3s cubic-bezier(.2,.8,.2,1), box-shadow .3s, border-color .3s; }
.trio-item:hover { transform: translateY(-6px); border-color: color-mix(in srgb, var(--tc) 65%, transparent);
  box-shadow: 0 30px 70px -34px color-mix(in srgb, var(--tc) 70%, transparent); }
.trio-cap { display: flex; align-items: center; justify-content: space-between; gap: .6rem; padding: .2rem .4rem .6rem; }
.trio-cap b { display: block; font-family: 'Space Grotesk', sans-serif; font-size: 1.02rem; }
.trio-cap small { color: var(--muted); font-size: .8rem; }
.trio-cap em { font-style: normal; font-size: .76rem; font-weight: 700; color: var(--tc); white-space: nowrap; padding: .22rem .6rem;
  border-radius: 999px; border: 1px solid color-mix(in srgb, var(--tc) 45%, transparent); transition: background .2s, color .2s; }
.trio-item:hover .trio-cap em { background: var(--tc); color: var(--bg); }

.dbsvg { width: 100%; height: auto; display: block; }
.dbsvg .enc { fill: var(--panel-solid); stroke: var(--border); stroke-width: 1.5; }
.dbsvg .hdr { fill: var(--muted); font: 600 11px 'JetBrains Mono', monospace; letter-spacing: .08em; }
.dbsvg .main { fill: color-mix(in srgb, var(--accent2) 18%, var(--panel-solid)); stroke: var(--accent2); stroke-width: 1.5; }
.dbsvg .mainlbl { fill: var(--text); font: 700 11px 'Space Grotesk', sans-serif; text-anchor: middle; }
.dbsvg .wire { stroke: color-mix(in srgb, var(--text) 22%, transparent); stroke-width: 2; fill: none; }
.dbsvg .flow { stroke: var(--accent); stroke-width: 2.6; fill: none; stroke-dasharray: 3 9; stroke-linecap: round; animation: flow .9s linear infinite; }
@keyframes flow { to { stroke-dashoffset: -24; } }
.dbsvg .mod { fill: var(--bg2); stroke: var(--border); stroke-width: 1.5; }
.dbsvg .mcb { animation: popIn .6s cubic-bezier(.2,1.4,.4,1) both; transform-box: fill-box; transform-origin: center; }
@keyframes popIn { from { opacity: 0; transform: translateY(14px) scale(.9); } }
.dbsvg .tog { fill: var(--accent); }
.dbsvg .led { fill: var(--good); animation: blink 2.4s ease-in-out infinite; }
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: .2; } }
.dbsvg .lbl { fill: var(--text); font: 700 11px 'JetBrains Mono', monospace; text-anchor: middle; }
.dbsvg .amp { fill: var(--muted); font: 500 9px 'JetBrains Mono', monospace; text-anchor: middle; }
.dbsvg .ico { font-size: 18px; text-anchor: middle; }
.dbsvg .nm { fill: var(--muted); font: 500 10px 'Inter', sans-serif; text-anchor: middle; }
.dbsvg .rcdtag rect { fill: color-mix(in srgb, var(--good) 18%, var(--panel-solid)); stroke: var(--good); }
.dbsvg .rcdtag text { fill: var(--good); font: 700 8px 'JetBrains Mono', monospace; text-anchor: middle; }
.dbsvg .scanbar { fill: color-mix(in srgb, var(--accent) 10%, transparent); stroke: var(--accent); stroke-width: 1.5;
  stroke-dasharray: 4 4; animation: scanx 6s ease-in-out infinite; }
@keyframes scanx { 0%, 6% { transform: translateX(0); } 44%, 56% { transform: translateX(300px); } 94%, 100% { transform: translateX(0); } }
.dbsvg .result rect { fill: color-mix(in srgb, var(--good) 14%, var(--panel-solid)); stroke: var(--good); }
.dbsvg .result text { fill: var(--good); font: 700 11px 'Space Grotesk', sans-serif; text-anchor: middle; }
.dbsvg .wall { fill: none; stroke: var(--text); stroke-opacity: .55; stroke-width: 2.5; }
.dbsvg .wall.outer { stroke-opacity: .85; stroke-width: 4; }
.dbsvg .room { fill: var(--good); fill-opacity: 0; animation: roomlit 4.2s ease-in-out infinite; }
@keyframes roomlit { 0%, 100% { fill-opacity: 0; } 10%, 22% { fill-opacity: .2; } 34% { fill-opacity: 0; } }
.dbsvg .door { fill: none; stroke: var(--accent2); stroke-width: 1.5; stroke-dasharray: 3 3; }
.dbsvg .win { stroke: var(--accent); stroke-width: 5; stroke-linecap: round; }
.dbsvg .dim { stroke: var(--gold); stroke-width: 1.6; fill: none; stroke-dasharray: 90; animation: draw 3s ease-in-out infinite; }
@keyframes draw { 0% { stroke-dashoffset: 90; } 40%, 80% { stroke-dashoffset: 0; } 100% { stroke-dashoffset: -90; } }
.dbsvg .dimtxt { fill: var(--gold); font: 700 10px 'JetBrains Mono', monospace; text-anchor: middle; }
.dbsvg .comp { fill: var(--bg2); stroke: var(--accent2); stroke-width: 1.6; }
.dbsvg .res { fill: none; stroke: var(--accent2); stroke-width: 2; stroke-linejoin: round; }
.dbsvg .plate { stroke: var(--accent2); stroke-width: 3; }
.dbsvg .node { fill: var(--accent); }
.dbsvg .ledfill { fill: var(--bad); animation: blink 1.2s ease-in-out infinite; }
.dbsvg .start { text-anchor: start; }

/* ---------- showcase ---------- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.1rem; }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: 22px; padding: 1rem 1rem 1.1rem;
  box-shadow: 0 20px 60px -32px var(--shadow); display: flex; flex-direction: column;
  transition: transform .35s cubic-bezier(.2,.8,.2,1), box-shadow .35s, border-color .35s; }
.card:hover { transform: translateY(-6px); border-color: color-mix(in srgb, var(--tc) 55%, transparent); box-shadow: 0 30px 70px -30px var(--glow); }
.card .thumb { border-radius: 14px; overflow: hidden; border: 1px solid var(--border); aspect-ratio: 4 / 3; background: var(--bg2); }
.card .thumb img { width: 100%; height: 100%; object-fit: cover; filter: var(--img-filter); transition: transform .6s cubic-bezier(.2,.8,.2,1); }
.card:hover .thumb img { transform: scale(1.05); }
.card.featured { border-color: color-mix(in srgb, var(--accent) 55%, transparent); box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent) 25%, transparent), 0 30px 80px -34px var(--glow); }
.tagrow { display: flex; justify-content: space-between; align-items: center; margin-top: .8rem; }
.tag { font-size: .7rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--tc);
  background: color-mix(in srgb, var(--tc) 12%, transparent); border: 1px solid color-mix(in srgb, var(--tc) 35%, transparent);
  padding: .15rem .6rem; border-radius: 999px; }
.ribbon { font-size: .68rem; font-weight: 700; letter-spacing: .06em; color: #fff; padding: .2rem .65rem; border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent2)); box-shadow: 0 0 16px var(--glow); }
.card h3 { font-size: 1.3rem; margin: .55rem 0 .3rem; }
.card p { color: var(--muted); font-size: .92rem; line-height: 1.5; margin: 0; }
.chips { display: flex; flex-direction: column; gap: .35rem; margin: .8rem 0 .9rem; flex: 1; }
.chip { font-size: .8rem; background: color-mix(in srgb, var(--accent) 7%, transparent); border: 1px solid var(--border);
  border-radius: 10px; padding: .35rem .6rem; }
.chip::before { content: "“"; color: var(--accent); font-weight: 700; margin-right: .2rem; }

.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin: .4rem 0 3rem; }
.step { background: var(--panel); border: 1px solid var(--border); border-radius: 18px; padding: 1.1rem 1.2rem; }
.step .n { width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center; font-family: 'Space Grotesk', sans-serif;
  font-weight: 700; color: #fff; background: linear-gradient(135deg, var(--accent), var(--accent2)); margin-bottom: .6rem; box-shadow: 0 8px 22px -8px var(--glow); }
.step h4 { font-family: 'Space Grotesk', sans-serif; font-size: 1.05rem; margin: 0; }
.step p { color: var(--muted); font-size: .9rem; margin: .2rem 0 0; }

.band { position: relative; overflow: hidden; border-radius: 26px; padding: 1.8rem 2rem; margin: 1rem 0 1.5rem;
  background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 14%, var(--panel-solid)), color-mix(in srgb, var(--accent2) 16%, var(--panel-solid)));
  border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent); }
.band::after { content: "💻"; position: absolute; right: 2rem; top: 1.2rem; font-size: 4.5rem; opacity: .18; animation: float 4s ease-in-out infinite; }
.band p { color: var(--muted); font-size: .92rem; line-height: 1.9; margin: .4rem 0 1rem; }
.band p b { color: var(--text); }
.footer { text-align: center; color: var(--muted); font-size: .8rem; padding: 1rem 0 2rem; }

/* ================================================================ workspace */
.appbar { display: flex; align-items: center; gap: .8rem; flex-wrap: wrap; background: var(--panel); border: 1px solid var(--border);
  border-radius: 18px; padding: .55rem .8rem; margin: 16px 0; box-shadow: 0 14px 40px -28px var(--shadow);
  animation: slideDown .5s cubic-bezier(.2,.8,.2,1) both; }
@keyframes slideDown { from { opacity: 0; transform: translateY(-14px); } to { opacity: 1; transform: none; } }
.appbar .crumb { font-family: 'Space Grotesk', sans-serif; font-weight: 700; font-size: 1.1rem; display: flex; align-items: center; gap: .55rem; }
.appbar .crumb .sep { color: var(--muted); font-weight: 400; }
.appbar .crumb .here { color: var(--muted); font-weight: 500; font-size: .95rem; }
.appbar .spacer { flex: 1; }
.seg { display: inline-flex; gap: 4px; padding: 4px; border-radius: 14px; background: var(--panel-solid); border: 1px solid var(--border); }
.seg button { font: 600 .88rem 'Inter', sans-serif; color: var(--text); background: transparent; border: none; border-radius: 10px;
  padding: .45rem .9rem; cursor: pointer; transition: background .2s, color .2s; white-space: nowrap; }
.seg button:hover { background: color-mix(in srgb, var(--accent) 10%, transparent); }
.seg button.on { background: linear-gradient(120deg, var(--accent), var(--accent2)); color: #fff; box-shadow: 0 8px 22px -10px var(--glow); }

.panel { background: var(--panel); border: 1px solid var(--border); border-radius: 22px; padding: 1rem; box-shadow: 0 24px 60px -34px var(--shadow);
  animation: fadeUp .6s cubic-bezier(.2,.8,.2,1) both; min-width: 0; }
.panel-h { display: flex; align-items: center; justify-content: space-between; gap: .5rem; margin-bottom: .5rem; }
.panel-h .t { font-family: 'Space Grotesk', sans-serif; font-weight: 700; font-size: 1.05rem; display: flex; align-items: center; gap: .45rem; }
.panel-h .t i { font-style: normal; width: 26px; height: 26px; border-radius: 8px; display: grid; place-items: center; font-size: .85rem;
  background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 30%, transparent), color-mix(in srgb, var(--accent2) 30%, transparent)); }
.panel-h .s { color: var(--muted); font-size: .78rem; }
.label { font-size: .68rem; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); }

/* library row */
.library { margin-bottom: 1rem; }
.lib-top { display: grid; grid-template-columns: auto auto 1fr; gap: 1rem; align-items: center; }
.lib-head { min-width: 140px; }
.wave { width: 140px; height: 22px; display: block; }
.wave-base { fill: none; stroke: color-mix(in srgb, var(--accent) 22%, transparent); stroke-width: 2; }
.wave-flow { fill: none; stroke: var(--accent); stroke-width: 2.5; stroke-linecap: round; stroke-dasharray: 18 60; animation: waveflow 2.2s linear infinite; }
@keyframes waveflow { to { stroke-dashoffset: -78; } }
.seg.big button { font-size: .95rem; padding: .6rem 1.1rem; }
.cats { display: grid; grid-template-columns: repeat(3, 1fr); gap: .6rem; }
.cat { position: relative; font: 600 1rem 'Inter', sans-serif; color: var(--text); background: var(--panel-solid); cursor: pointer;
  border: 1.5px solid color-mix(in srgb, var(--tc) 55%, transparent); border-radius: 16px; padding: .85rem .8rem; min-height: 3.3rem;
  transition: transform .2s cubic-bezier(.2,.8,.2,1), box-shadow .25s, background .25s; }
.cat:hover { transform: translateY(-2px); box-shadow: 0 10px 28px -12px color-mix(in srgb, var(--tc) 70%, transparent); }
.cat.on { background: linear-gradient(120deg, var(--accent), var(--accent2)); color: #fff; border-color: transparent;
  box-shadow: 0 12px 30px -12px var(--glow), inset 0 0 0 1px rgba(255,255,255,.18); }
.cat .count { opacity: .75; font-weight: 500; }
.cat .badge { position: absolute; right: .7rem; top: -.6rem; font-size: .58rem; font-weight: 800; letter-spacing: .14em;
  padding: .14rem .5rem; border-radius: 999px; box-shadow: 0 0 12px rgba(0,0,0,.25); }
.cat.t-db .badge { color: #1a1300; background: linear-gradient(135deg, #FFD166, #F5A524); }
.cat.t-plan .badge { color: #04241a; background: linear-gradient(135deg, #6EE7B7, #34D399); }
.cat.t-ckt .badge { color: #fff; background: linear-gradient(135deg, #A78BFA, #8B5CF6); }
.cat::before { content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none;
  background: linear-gradient(110deg, transparent 30%, rgba(255,255,255,.16) 50%, transparent 70%); background-size: 250% 100%; background-position: 150% 0; }
.cat:hover::before { animation: sheen .9s ease-out; }
@keyframes sheen { from { background-position: 150% 0; } to { background-position: -100% 0; } }
.lib-sub { display: flex; justify-content: space-between; align-items: center; gap: .8rem; margin: .9rem 0 .3rem; flex-wrap: wrap; }
.spec-badge { display: inline-flex; gap: .5rem; align-items: center; padding: .45rem .7rem; border-radius: 12px; font-size: .8rem;
  background: color-mix(in srgb, var(--accent2) 10%, transparent); border: 1px solid color-mix(in srgb, var(--accent2) 30%, transparent); }
.spec-badge.none { background: transparent; border-style: dashed; border-color: var(--border); color: var(--muted); }
.tiles { display: flex; gap: .6rem; overflow-x: auto; padding: 6px 2px 12px; scroll-snap-type: x proximity;
  scrollbar-width: thin; scrollbar-color: color-mix(in srgb, var(--accent) 45%, transparent) transparent; }
.tile { flex: 0 0 138px; scroll-snap-align: start; background: var(--panel-solid); border: 1px solid var(--border); border-radius: 14px;
  padding: .45rem; cursor: pointer; color: var(--text); font: 600 .8rem 'Inter', sans-serif; text-align: center;
  transition: transform .25s cubic-bezier(.2,.8,.2,1), border-color .25s, box-shadow .25s; animation: fadeUp .45s cubic-bezier(.2,.8,.2,1) both; }
.tile:hover { transform: translateY(-4px); border-color: color-mix(in srgb, var(--accent) 55%, transparent); box-shadow: 0 14px 30px -18px var(--glow); }
.tile img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 10px; filter: var(--img-filter); background: var(--bg2); }
.tile span { display: block; margin-top: .4rem; padding: .2rem; border-radius: 8px; }
.tile.on { border-color: var(--accent); box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 35%, transparent), 0 14px 30px -18px var(--glow); }
.tile.on span { background: linear-gradient(120deg, var(--accent), var(--accent2)); color: #fff; }
.uploads { display: grid; grid-template-columns: 1fr 1fr; gap: .8rem; }
.drop { position: relative; display: flex; align-items: center; gap: .8rem; padding: .9rem 1rem; border-radius: 16px; cursor: pointer;
  border: 1.5px dashed color-mix(in srgb, var(--accent) 40%, transparent); background: var(--panel-solid); transition: border-color .2s, box-shadow .2s, background .2s; }
.drop:hover, .drop.drag { border-color: var(--accent); box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 12%, transparent); }
.drop.done { border-style: solid; border-color: var(--good); }
.drop input { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.drop .ic { font-size: 1.6rem; }
.drop b { display: block; font-family: 'Space Grotesk', sans-serif; }
.drop small { color: var(--muted); }

/* viewer + assistant */
.work { display: grid; grid-template-columns: 1.15fr 1fr; gap: 1rem; align-items: start; padding-bottom: 2rem; }
.vbar { display: flex; align-items: flex-start; justify-content: space-between; gap: .8rem; flex-wrap: wrap; margin-bottom: .7rem; }
.vbar .t { font-family: 'Space Grotesk', sans-serif; font-weight: 700; font-size: 1.35rem; letter-spacing: -.02em; }
.vbar .s { color: var(--muted); font-size: .82rem; margin-top: .1rem; }
.vchips { display: flex; gap: .4rem; flex-wrap: wrap; }
.vchips span { font-size: .76rem; padding: .25rem .6rem; border-radius: 999px; background: var(--panel-solid); border: 1px solid var(--border); }
.vchips b { font-family: 'Space Grotesk', sans-serif; color: var(--accent); margin-right: .2rem; }
.canvas { position: relative; border-radius: 16px; overflow: hidden; border: 1px solid var(--border); background: var(--bg2); aspect-ratio: 4 / 3; }
.canvas img { width: 100%; height: 100%; object-fit: contain; filter: var(--img-filter); opacity: 0; transition: opacity .35s, transform .7s cubic-bezier(.2,.8,.2,1); }
.canvas img.ready { opacity: 1; }
.canvas img.ready:hover { transform: scale(1.04); }
.canvas::after { content: ""; position: absolute; inset: 0; pointer-events: none; transform: translateY(-100%);
  background: linear-gradient(180deg, transparent 80%, color-mix(in srgb, var(--accent) 20%, transparent) 95%, transparent); animation: scan 6s ease-in-out infinite; }
@keyframes scan { 0% { transform: translateY(-100%); } 60%, 100% { transform: translateY(100%); } }
.canvas.pdf { aspect-ratio: auto; max-height: 78vh; overflow: auto; }
.canvas.pdf img { height: auto; filter: none; background: #fff; }
.canvas.pdf img.ready:hover { transform: none; }
.pages { display: flex; gap: .35rem; flex-wrap: wrap; margin-bottom: .6rem; }
.pages button { font: 600 .78rem 'Inter', sans-serif; color: var(--text); background: var(--panel-solid); border: 1px solid var(--border);
  border-radius: 8px; padding: .25rem .6rem; cursor: pointer; }
.pages button.on { background: linear-gradient(120deg, var(--accent), var(--accent2)); color: #fff; border-color: transparent; }
.note { margin-top: .7rem; font-size: .8rem; color: var(--muted); padding: .55rem .75rem; border-radius: 12px;
  border: 1px dashed var(--border); }
.skeleton { background: linear-gradient(100deg, var(--bg2) 30%, color-mix(in srgb, var(--accent) 8%, var(--bg2)) 50%, var(--bg2) 70%);
  background-size: 200% 100%; animation: skel 1.2s linear infinite; }
@keyframes skel { to { background-position: -200% 0; } }
details { margin-top: .8rem; border: 1px solid var(--border); border-radius: 14px; padding: .55rem .8rem; }
details summary { cursor: pointer; font-size: .88rem; font-weight: 500; }
details summary:hover { color: var(--accent); }
details pre { background: var(--bg2); border: 1px solid var(--border); border-radius: 10px; padding: .6rem; font-size: .74rem;
  overflow: auto; max-height: 260px; margin: .5rem 0; white-space: pre-wrap; word-break: break-word; }
.warn { margin-top: .6rem; padding: .6rem .8rem; border-radius: 12px; font-size: .85rem;
  background: color-mix(in srgb, var(--warn) 12%, transparent); border: 1px solid color-mix(in srgb, var(--warn) 40%, transparent); }

.board { margin-top: .9rem; padding: .9rem 1rem .7rem; border-radius: 16px; position: relative; overflow: hidden;
  background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 8%, var(--panel-solid)), color-mix(in srgb, var(--accent2) 8%, var(--panel-solid)));
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent); animation: fadeUp .5s both; }
.board::before { content: ""; position: absolute; top: 0; left: 0; width: 40%; height: 2px; transform: translateX(-100%);
  background: linear-gradient(90deg, transparent, var(--accent), transparent); animation: sweep 3s linear infinite; }
@keyframes sweep { to { transform: translateX(250%); } }
.board-h { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: .5rem; margin-bottom: .55rem; }
.board-h .t { font-family: 'Space Grotesk', sans-serif; font-weight: 700; font-size: 1.02rem; }
.board-h .k { display: flex; gap: .35rem; flex-wrap: wrap; }
.board-h .k span { font-size: .74rem; padding: .2rem .55rem; border-radius: 999px; background: var(--panel-solid); border: 1px solid var(--border); }
.board-h .k b { color: var(--accent); font-family: 'Space Grotesk', sans-serif; }
.crow { display: grid; grid-template-columns: 34px 54px 1fr 70px 62px; gap: .55rem; align-items: center; font-size: .8rem;
  padding: .26rem 0; border-top: 1px dashed var(--border); animation: fadeUp .45s cubic-bezier(.2,.8,.2,1) both; animation-delay: var(--d); }
.crow:first-of-type { border-top: none; }
.ctag { font-family: 'JetBrains Mono', monospace; font-weight: 600; color: var(--accent); }
.crat { color: var(--muted); font-family: 'JetBrains Mono', monospace; font-size: .74rem; }
.cbar { height: 8px; border-radius: 99px; background: color-mix(in srgb, var(--text) 8%, transparent); overflow: hidden; }
.cbar i { display: block; height: 100%; width: var(--w); border-radius: 99px; background: linear-gradient(90deg, var(--accent), var(--accent2));
  box-shadow: 0 0 12px var(--glow); animation: grow 1.1s cubic-bezier(.2,.8,.2,1) both; animation-delay: var(--d); }
@keyframes grow { from { width: 0; } }
.cload { text-align: right; font-family: 'JetBrains Mono', monospace; font-size: .76rem; }
.rcd { font-size: .66rem; text-align: center; padding: .12rem .3rem; border-radius: 99px; border: 1px dashed var(--border); color: var(--muted); }
.rcd.on { color: var(--good); border: 1px solid color-mix(in srgb, var(--good) 45%, transparent); background: color-mix(in srgb, var(--good) 10%, transparent); }

.assistant { display: flex; flex-direction: column; height: calc(100vh - 150px); min-height: 560px; position: sticky; top: 16px; }
.messages { flex: 1; overflow-y: auto; padding: .3rem .2rem .6rem; scroll-behavior: smooth; }
.empty { text-align: center; padding: 3rem .5rem 1rem; }
.empty .ico { font-size: 2.6rem; display: inline-block; animation: float 3.5s ease-in-out infinite; }
.empty h4 { font-family: 'Space Grotesk', sans-serif; font-size: 1.15rem; margin: .4rem 0 .2rem; }
.empty p { color: var(--muted); font-size: .9rem; max-width: 320px; margin: 0 auto; }
.msg { display: flex; gap: .6rem; margin: 0 8% .75rem 0; animation: bubbleIn .4s cubic-bezier(.2,.8,.2,1) both; }
.msg .av { width: 30px; height: 30px; flex: none; border-radius: 10px; display: grid; place-items: center; font-size: .9rem;
  background: linear-gradient(135deg, var(--accent), var(--accent2)); }
.msg .bubble { min-width: 0; flex: 1; background: var(--panel-solid); border: 1px solid var(--border); border-radius: 18px 18px 18px 6px;
  padding: .7rem .9rem; font-size: .92rem; line-height: 1.55; overflow-wrap: anywhere; }
.msg.user { flex-direction: row-reverse; margin: 0 0 .75rem 14%; animation-name: bubbleInR; }
.msg.user .bubble { flex: 0 1 auto; border-radius: 18px 18px 6px 18px; border-color: color-mix(in srgb, var(--accent) 35%, transparent);
  background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 22%, var(--panel-solid)), color-mix(in srgb, var(--accent2) 22%, var(--panel-solid))); }
@keyframes bubbleIn { from { opacity: 0; transform: translate(-10px, 8px) scale(.98); } to { opacity: 1; transform: none; } }
@keyframes bubbleInR { from { opacity: 0; transform: translate(10px, 8px) scale(.98); } to { opacity: 1; transform: none; } }
.bubble p { margin: 0 0 .5rem; } .bubble p:last-child { margin-bottom: 0; }
.bubble ul, .bubble ol { margin: .2rem 0 .5rem; padding-left: 1.2rem; }
.bubble code { background: var(--bg2); border: 1px solid var(--border); border-radius: 6px; padding: 0 .3rem; font-size: .82em; }
.bubble table { border-collapse: collapse; font-size: .82rem; margin: .4rem 0; display: block; overflow-x: auto; }
.bubble th, .bubble td { border: 1px solid var(--border); padding: .25rem .5rem; text-align: left; }
.route { display: inline-flex; align-items: center; gap: .35rem; font-size: .72rem; font-weight: 600; letter-spacing: .04em; color: var(--accent);
  background: color-mix(in srgb, var(--accent) 10%, transparent); border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
  padding: .16rem .6rem; border-radius: 999px; margin-bottom: .5rem; }
.route.error { color: var(--bad); background: color-mix(in srgb, var(--bad) 10%, transparent); border-color: color-mix(in srgb, var(--bad) 40%, transparent); }
.stamp { display: inline-block; font-family: 'Space Grotesk', sans-serif; font-weight: 700; font-size: 1rem; letter-spacing: .06em; text-transform: uppercase;
  padding: .15rem .8rem; border: 2.5px solid; border-radius: 8px; margin: 0 0 .5rem .5rem; animation: stampIn .55s cubic-bezier(.2,1.6,.4,1) both; }
.stamp.fail { color: var(--bad); box-shadow: 0 0 24px -6px var(--bad); }
.stamp.pass { color: var(--good); box-shadow: 0 0 24px -6px var(--good); }
@keyframes stampIn { 0% { transform: scale(2.4) rotate(-12deg); opacity: 0; } 100% { transform: scale(1) rotate(-3deg); opacity: 1; } }
.final { display: inline-flex; gap: .5rem; align-items: center; margin-top: .5rem; padding: .3rem .75rem; border-radius: 10px;
  background: color-mix(in srgb, var(--accent2) 12%, transparent); border: 1px solid color-mix(in srgb, var(--accent2) 35%, transparent);
  font-family: 'JetBrains Mono', monospace; font-size: .85rem; }
.final b { color: var(--accent2); }
.clause { border-left: 3px solid var(--accent); padding: .4rem .8rem; margin: .4rem 0; background: color-mix(in srgb, var(--accent) 6%, transparent);
  border-radius: 0 10px 10px 0; font-size: .85rem; }
.clause .pg { color: var(--accent); font-weight: 600; font-size: .72rem; letter-spacing: .06em; text-transform: uppercase; }
.meta { color: var(--muted); font-size: .74rem; margin-top: .4rem; }
.thinking { display: flex; align-items: center; gap: .7rem; color: var(--muted); font-size: .9rem; }
.thinking .bars { display: flex; gap: 4px; align-items: flex-end; height: 18px; }
.thinking .bars i { width: 4px; border-radius: 2px; background: linear-gradient(var(--accent), var(--accent2)); animation: eq 1s ease-in-out infinite; }
.thinking .bars i:nth-child(2) { animation-delay: .15s; } .thinking .bars i:nth-child(3) { animation-delay: .3s; } .thinking .bars i:nth-child(4) { animation-delay: .45s; }
@keyframes eq { 0%, 100% { height: 5px; } 50% { height: 18px; } }
.suggest { display: flex; gap: .4rem; overflow-x: auto; padding: .4rem 0 .6rem; scrollbar-width: none; }
.suggest button { flex: none; font: 500 .78rem 'Inter', sans-serif; color: var(--text); background: var(--panel-solid); cursor: pointer;
  border: 1px solid var(--border); border-radius: 999px; padding: .38rem .8rem; transition: border-color .2s, transform .2s, box-shadow .2s; }
.suggest button:hover { border-color: var(--accent); transform: translateY(-1px); box-shadow: 0 8px 20px -12px var(--glow); }
.composer { display: flex; gap: .5rem; align-items: flex-end; background: var(--panel-solid); border: 1px solid var(--border); border-radius: 16px;
  padding: .45rem .45rem .45rem .9rem; box-shadow: 0 10px 40px -18px var(--glow); transition: border-color .25s, box-shadow .25s; }
.composer:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 20%, transparent), 0 10px 40px -12px var(--glow); }
.composer textarea { flex: 1; resize: none; border: none; outline: none; background: transparent; color: var(--text);
  font: 400 .95rem 'Inter', sans-serif; max-height: 140px; padding: .45rem 0; }
.composer button { width: 40px; height: 40px; border: none; border-radius: 12px; cursor: pointer; color: #fff; font-size: 1.05rem;
  background: linear-gradient(135deg, var(--accent), var(--accent2)); transition: transform .15s; }
.composer button:hover { transform: scale(1.06); }
.composer button[disabled] { opacity: .45; pointer-events: none; }
.toast { position: fixed; left: 50%; bottom: 24px; transform: translate(-50%, 20px); opacity: 0; z-index: 10; padding: .7rem 1rem; border-radius: 12px;
  background: var(--panel-solid); border: 1px solid var(--border); box-shadow: 0 20px 50px -20px var(--shadow); transition: opacity .25s, transform .25s; font-size: .88rem; }
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.toast.err { border-color: color-mix(in srgb, var(--bad) 50%, transparent); }

/* ---------- responsive ---------- */
@media (max-width: 1000px) {
  .work, .trio { grid-template-columns: 1fr; }
  .cards, .steps { grid-template-columns: 1fr; }
  .lib-top { grid-template-columns: 1fr; }
  .assistant { position: static; height: 640px; }
}
@media (max-width: 640px) {
  .wrap { padding: 0 16px; }
  .cats, .try-row, .uploads { grid-template-columns: 1fr; }
  .crow { grid-template-columns: 30px 46px 1fr 60px; }
  .crow .rcd { display: none; }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation: none !important; transition: none !important; } .reveal { opacity: 1; transform: none; } }