/* ==========================================================================
   Birapa AI — shared styles
   ========================================================================== */

:root{
  --bg: #0a0a0b;
  --bg-raised: #111113;
  --bg-panel: #131316;
  --line: #232326;
  --line-soft: #1c1c1f;
  --text: #f3f3f2;
  --text-dim: #9a9aa2;
  --text-faint: #5f5f68;
  --orange: #ff6a1a;
  --orange-dim: #b34f18;
  --green: #35d47a;
  --red: #ff5d5d;
  --radius: 3px;
  --mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --wrap: 1180px;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
img{ max-width:100%; display:block; }
a{ color: inherit; text-decoration: none; }
button{ font-family: inherit; cursor: pointer; }
input, select, textarea{ font-family: inherit; }

.wrap{ max-width: var(--wrap); margin: 0 auto; padding: 0 32px; }
@media (max-width: 720px){ .wrap{ padding: 0 20px; } }

::selection{ background: var(--orange); color: #16130f; }

/* focus visibility */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible{
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce){
  *{ animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}

/* ---------------- Top nav ---------------- */
.topnav{
  position: sticky; top:0; z-index: 40;
  background: rgba(10,10,11,0.86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line-soft);
}
.topnav .bar{
  display:flex; align-items:center; gap: 28px;
  height: 64px;
}
.brand{ display:flex; align-items:center; gap:10px; font-weight:700; font-size:15px; letter-spacing:0.02em; white-space:nowrap; }
.brand .mark{
  width:26px; height:26px; border-radius:6px;
  background: var(--orange);
  color:#171205; font-weight:800; font-size:13px;
  display:flex; align-items:center; justify-content:center;
}
.brand small{ color: var(--text-faint); font-weight:500; font-size:11px; margin-left:6px; }
.navlinks{ display:flex; align-items:center; gap:22px; flex:1; font-size:14px; color: var(--text-dim); }
.navlinks a{ padding:6px 0; }
.navlinks a:hover{ color: var(--text); }
.navlinks a.active{ color: var(--text); }
.nav-right{ display:flex; align-items:center; gap:18px; margin-left:auto; }
.status-dot{ display:flex; align-items:center; gap:7px; font-size:12px; color: var(--text-dim); font-family: var(--mono); }
.status-dot i{ width:6px; height:6px; border-radius:50%; background: var(--green); box-shadow:0 0 8px var(--green); }
.signin-link{ font-size:14px; color: var(--text-dim); }
.signin-link:hover{ color: var(--text); }
.btn{
  display:inline-flex; align-items:center; gap:8px;
  padding: 10px 18px; border-radius: var(--radius);
  font-size:14px; font-weight:600; border:1px solid transparent;
  transition: transform .15s ease, background .15s ease, border-color .15s ease;
}
.btn-primary{ background: var(--orange); color:#181206; }
.btn-primary:hover{ background:#ff7c36; }
.btn-outline{ border-color: var(--line); color: var(--text); background: transparent; }
.btn-outline:hover{ border-color: var(--text-dim); }
.navlinks-toggle{ display:none; }

@media (max-width: 980px){
  .navlinks{ display:none; }
  .status-dot{ display:none; }
}

/* ---------------- Generic section chrome ---------------- */
section{ padding: 96px 0; border-bottom: 1px solid var(--line-soft); }
section:last-of-type{ border-bottom: none; }
.eyebrow{
  display:flex; align-items:center; gap:10px;
  font-family: var(--mono); font-size:12px; letter-spacing: 0.06em;
  color: var(--orange); margin-bottom: 18px;
}
.eyebrow::before{ content:""; width:22px; height:2px; background: var(--orange); display:block; }
h1,h2,h3{ margin:0; font-weight: 800; letter-spacing: -0.02em; }
.h-display{ font-size: clamp(34px, 5vw, 54px); line-height: 1.04; }
.h-display .fade{ color: var(--text-dim); }
.h-display .accent{ color: var(--orange); }
.lede{ color: var(--text-dim); font-size:16px; max-width: 46ch; line-height:1.6; }

/* ---------------- Hero ---------------- */
.hero{ padding-top: 76px; padding-bottom: 90px; }
.hero-grid{ display:grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: start; }
@media (max-width: 980px){ .hero-grid{ grid-template-columns: 1fr; } }

.hero-actions{ display:flex; align-items:center; gap:22px; margin-top: 30px; }
.link-quiet{ font-size:14px; color: var(--text-dim); display:flex; align-items:center; gap:6px; }
.link-quiet:hover{ color: var(--text); }

.stat-row{ display:flex; gap:44px; margin-top: 50px; padding-top: 26px; border-top:1px solid var(--line-soft); }
.stat b{ display:block; font-size:26px; font-weight:800; }
.stat span{ display:block; font-family: var(--mono); font-size:10.5px; color: var(--text-faint); letter-spacing:0.05em; margin-top:4px; }

/* console card used in hero */
.console{
  background: var(--bg-panel); border:1px solid var(--line); border-radius: 6px;
  overflow:hidden; position:relative;
}
.console-head{
  display:flex; align-items:center; justify-content:space-between;
  padding: 13px 16px; border-bottom:1px solid var(--line);
  font-family: var(--mono); font-size:11px; color: var(--text-dim); letter-spacing:0.04em;
}
.console-head .dot-live{ color: var(--orange); display:flex; align-items:center; gap:7px; }
.console-head .dot-live i{ width:6px; height:6px; border-radius:50%; background: var(--orange); }
.console-body{ padding: 20px; }
.console-label{ font-family: var(--mono); font-size:10.5px; color: var(--text-faint); letter-spacing:0.05em; margin-bottom:10px; }
.console-textarea{
  width:100%; min-height: 76px; background: var(--bg-raised); border:1px solid var(--line);
  border-radius: 4px; color: var(--text); padding: 13px 14px; font-size:14px; resize: vertical;
}
.chip-row{ display:flex; gap:8px; margin-top:12px; flex-wrap: wrap; }
.chip{
  font-size:12.5px; color: var(--text-dim); border:1px solid var(--line);
  padding:7px 12px; border-radius: 20px; background: var(--bg-raised);
}
.chip:hover{ border-color: var(--text-dim); color: var(--text); }
.console-cta{
  margin-top:16px; width:100%; background: var(--orange); color:#181206;
  border:none; border-radius:4px; padding: 13px 16px; font-weight:700; font-size:14px;
  display:flex; align-items:center; justify-content:space-between;
}
.console-cta:hover{ background:#ff7c36; }
.console-cta kbd{ font-family: var(--mono); font-size:11px; background: rgba(0,0,0,0.18); padding:2px 6px; border-radius:3px; }
.console-foot{ padding: 12px 20px; font-family: var(--mono); font-size:11px; color: var(--text-faint); }

/* ---------------- Feature grid ---------------- */
.section-head-row{ display:grid; grid-template-columns: 1fr 1fr; gap:40px; align-items:end; margin-bottom: 48px; }
@media (max-width: 860px){ .section-head-row{ grid-template-columns: 1fr; } }
.grid-4{ display:grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line-soft); border:1px solid var(--line-soft); }
.grid-4 .card{ background: var(--bg); padding: 30px; min-height: 168px; display:flex; flex-direction:column; justify-content:space-between; }
.card .icon{
  width:38px; height:38px; border-radius:6px; background: rgba(255,106,26,0.1);
  color: var(--orange); display:flex; align-items:center; justify-content:center; font-size:17px;
}
.card h4{ font-size:16px; margin: 16px 0 6px; }
.card p{ margin:0; color: var(--text-dim); font-size:13.5px; line-height:1.55; }
@media (max-width: 720px){ .grid-4{ grid-template-columns: 1fr; } }

/* ---------------- Build loop ---------------- */
.loop-grid{ display:grid; grid-template-columns: 1fr 1fr; border-top:1px solid var(--line-soft); border-left:1px solid var(--line-soft); }
.loop-cell{ border-right:1px solid var(--line-soft); border-bottom:1px solid var(--line-soft); padding: 32px 34px; }
.loop-num{ font-family: var(--mono); color: var(--orange); font-size:12.5px; }
.loop-cell h4{ margin: 12px 0 8px; font-size: 17px; }
.loop-cell p{ margin:0; color: var(--text-dim); font-size:13.5px; max-width: 32ch; }
@media (max-width: 720px){ .loop-grid{ grid-template-columns: 1fr; } }

/* ---------------- Studio preview ---------------- */
.studio-panel{
  border:1px solid var(--line); border-radius:6px; overflow:hidden; background: var(--bg-panel);
}
.studio-titlebar{
  display:flex; align-items:center; justify-content:space-between;
  padding: 11px 16px; border-bottom:1px solid var(--line);
}
.traffic{ display:flex; gap:6px; }
.traffic i{ width:9px; height:9px; border-radius:50%; }
.traffic i:nth-child(1){ background:#ff5f57; }
.traffic i:nth-child(2){ background:#febc2e; }
.traffic i:nth-child(3){ background:#28c840; }
.studio-path{ font-family: var(--mono); font-size:11.5px; color: var(--text-dim); }
.studio-tabs{ display:flex; gap:6px; font-size:12px; }
.studio-tabs button{ background: var(--bg-raised); border:1px solid var(--line); color: var(--text-dim); border-radius:4px; padding:6px 10px; }
.studio-tabs button.active{ color: var(--text); border-color: var(--text-dim); }
.studio-body{ display:grid; grid-template-columns: 260px 1fr; min-height: 360px; }
@media (max-width: 860px){ .studio-body{ grid-template-columns: 1fr; } }
.studio-side{ border-right:1px solid var(--line); padding: 20px; }
@media (max-width: 860px){ .studio-side{ border-right:none; border-bottom:1px solid var(--line); } }
.side-label{ font-family: var(--mono); font-size:10.5px; color: var(--text-faint); letter-spacing:0.05em; display:flex; justify-content:space-between; margin-bottom:12px; }
.brief-box{ background: rgba(255,106,26,0.06); border:1px solid rgba(255,106,26,0.25); border-radius:4px; padding:14px; margin-bottom:20px; }
.brief-box .tag{ font-family: var(--mono); font-size:10px; color: var(--orange); letter-spacing:0.05em; }
.brief-box p{ margin:8px 0 0; font-size:13px; color: var(--text); }
.tree{ list-style:none; margin:0; padding:0; font-size:13.5px; }
.tree li{ display:flex; align-items:center; justify-content:space-between; padding:8px 0; border-bottom:1px dashed var(--line-soft); color: var(--text-dim); }
.tree li b{ font-weight:500; color: var(--text); font-size:13px; }
.tree .ok{ color: var(--green); font-size:12px; }
.synth-note{ margin-top:18px; font-size:11.5px; color: var(--text-faint); font-family: var(--mono); }
.studio-main{ padding: 22px; }
.mock-app{ background: var(--bg-raised); border:1px solid var(--line); border-radius:6px; padding:20px; }
.mock-app-head{ display:flex; align-items:center; justify-content:space-between; margin-bottom:20px; }
.mock-brand{ display:flex; align-items:center; gap:10px; font-size:13.5px; font-weight:600; }
.mock-swatch{ width:20px; height:20px; border-radius:5px; background: var(--orange); }
.mock-status{ font-family: var(--mono); font-size:10px; color: var(--orange); border:1px solid var(--orange-dim); padding:4px 8px; border-radius:3px; }
.mock-greet{ font-family: var(--mono); font-size:10.5px; color: var(--text-faint); margin-bottom:4px; }
.mock-app h3{ font-size:20px; margin: 2px 0 8px; }
.mock-app > p{ color: var(--text-dim); font-size:13px; max-width:52ch; margin:0 0 20px; }
.metric-row{ display:grid; grid-template-columns: repeat(3,1fr); gap:14px; margin-bottom:16px; }
.metric{ background: var(--bg-panel); border:1px solid var(--line); border-radius:5px; padding:14px; }
.metric .m-label{ font-family: var(--mono); font-size:10px; color: var(--text-faint); letter-spacing:0.05em; }
.metric .m-value{ font-size:19px; font-weight:700; margin: 6px 0 8px; }
.metric .m-bar{ height:4px; background: var(--line); border-radius:2px; overflow:hidden; }
.metric .m-bar i{ display:block; height:100%; background: var(--orange); }
.activity-box{ background: var(--bg-panel); border:1px solid var(--line); border-radius:5px; padding:14px 16px; }
.activity-box .a-head{ display:flex; justify-content:space-between; font-family: var(--mono); font-size:10px; color: var(--text-faint); letter-spacing:0.05em; margin-bottom:10px; }
.activity-box ul{ list-style:none; margin:0; padding:0; font-size:13px; }
.activity-box li{ display:flex; align-items:center; gap:9px; padding:7px 0; color: var(--text-dim); }
.activity-box li i{ width:5px; height:5px; border-radius:50%; background: var(--orange); flex-shrink:0; }

/* ---------------- Chat widgets (Ask Birapa + Chat board page) ---------------- */
.chat-panel{ border:1px solid var(--line); border-radius:6px; overflow:hidden; background: var(--bg-panel); display:flex; flex-direction:column; }
.chat-head{ display:flex; align-items:center; gap:11px; padding:14px 18px; border-bottom:1px solid var(--line); }
.chat-avatar{ width:32px; height:32px; border-radius:50%; background: var(--orange); display:flex; align-items:center; justify-content:center; font-weight:700; font-size:12px; color:#181206; }
.chat-head .who b{ display:block; font-size:13.5px; }
.chat-head .who span{ display:block; font-size:11px; color: var(--green); font-family: var(--mono); }
.chat-head .idcode{ margin-left:auto; font-family: var(--mono); font-size:11px; color: var(--text-faint); }
.chat-messages{ padding: 20px; display:flex; flex-direction:column; gap:14px; min-height: 220px; max-height: 380px; overflow-y:auto; }
.msg{ max-width: 80%; padding: 12px 14px; border-radius: 5px; font-size:13.5px; line-height:1.5; }
.msg.bot{ background: var(--bg-raised); border:1px solid var(--line); align-self:flex-start; }
.msg.user{ background: rgba(255,106,26,0.12); border:1px solid rgba(255,106,26,0.3); align-self:flex-end; }
.msg .who-tag{ display:block; font-family: var(--mono); font-size:10px; color: var(--text-faint); margin-bottom:5px; letter-spacing:0.04em; }
.msg.user .who-tag{ color: var(--orange); text-align:right; }
.chat-suggest{ display:flex; gap:8px; padding: 0 18px 14px; flex-wrap:wrap; }
.chat-suggest button{ font-size:12px; color: var(--text-dim); background: var(--bg-raised); border:1px solid var(--line); border-radius:20px; padding:7px 12px; }
.chat-suggest button:hover{ color: var(--text); border-color: var(--text-dim); }
.chat-input-row{ display:flex; gap:10px; padding: 14px 18px; border-top:1px solid var(--line); }
.chat-input-row input{ flex:1; background: var(--bg-raised); border:1px solid var(--line); border-radius:4px; padding:12px 14px; color: var(--text); font-size:13.5px; }
.chat-send{ width:44px; background: var(--orange); border:none; border-radius:4px; color:#181206; display:flex; align-items:center; justify-content:center; }
.chat-send:hover{ background:#ff7c36; }
.mode-flag{ display:inline-flex; align-items:center; gap:8px; font-family: var(--mono); font-size:11.5px; color: var(--text-dim); border:1px solid var(--line); padding:9px 14px; border-radius:4px; margin-top: 26px; }
.mode-flag i{ width:6px; height:6px; border-radius:50%; background: var(--green); }

/* ---------------- Early access / form ---------------- */
.form-card{ background: var(--bg-panel); border:1px solid var(--line); border-radius:6px; padding: 26px; }
.form-card-head{ display:flex; justify-content:space-between; align-items:flex-start; margin-bottom:6px; }
.form-card-head h3{ font-size:19px; }
.form-card-head p{ margin:6px 0 22px; color: var(--text-dim); font-size:13.5px; }
.field-grid{ display:grid; grid-template-columns:1fr 1fr; gap:16px; margin-bottom:16px; }
@media (max-width:560px){ .field-grid{ grid-template-columns:1fr; } }
.field label{ display:block; font-family: var(--mono); font-size:10.5px; color: var(--text-faint); letter-spacing:0.05em; margin-bottom:8px; }
.field label .req{ color: var(--orange); }
.field input, .field select{
  width:100%; background: var(--bg-raised); border:1px solid var(--line); border-radius:4px;
  padding:12px 13px; color: var(--text); font-size:13.5px;
}
.field select{ appearance:none; }
.avatars{ display:flex; align-items:center; gap:10px; margin-top: 24px; padding-top:20px; border-top:1px solid var(--line-soft); }
.avatars .stack{ display:flex; }
.avatars .stack i{ width:26px; height:26px; border-radius:50%; border:2px solid var(--bg); margin-left:-8px; display:block; }
.avatars .stack i:first-child{ margin-left:0; }
.avatars span{ font-size:12px; color: var(--text-dim); }

/* ---------------- Footer ---------------- */
footer{ padding: 56px 0 40px; }
.footer-top{ display:flex; justify-content:space-between; align-items:flex-start; gap: 40px; flex-wrap: wrap; }
.footer-brand .brand{ margin-bottom: 12px; }
.footer-tagline{ font-family: var(--mono); font-size:12px; color: var(--text-dim); max-width: 40ch; }
.footer-tagline b{ color: var(--text); font-weight:600; }
.footer-status{ text-align:right; font-family: var(--mono); font-size:11px; color: var(--text-faint); }
.footer-status .dotline{ display:flex; align-items:center; gap:7px; justify-content:flex-end; margin-bottom:6px; }
.footer-status .dotline i{ width:6px; height:6px; border-radius:50%; background: var(--green); }
.footer-bottom{ margin-top:40px; padding-top:20px; border-top:1px solid var(--line-soft); display:flex; justify-content:space-between; color: var(--text-faint); font-size:12px; flex-wrap:wrap; gap:10px; }

/* ---------------- Toast (wake servers) ---------------- */
.toast{
  position:fixed; left:50%; bottom:26px; transform: translateX(-50%);
  background: #17171a; border:1px solid var(--line); border-radius: 8px;
  padding: 11px 12px 11px 16px; display:flex; align-items:center; gap:14px;
  font-size:13px; color: var(--text-dim); z-index:60; box-shadow: 0 10px 30px rgba(0,0,0,0.4);
}
.toast button.wake{ background: rgba(53,212,122,0.12); color: var(--green); border:1px solid rgba(53,212,122,0.35); padding:7px 12px; border-radius:20px; font-size:12.5px; font-weight:600; }
.toast .x{ color: var(--text-faint); margin-left:4px; font-size:16px; line-height:1; }

/* ---------------- sub-page header ---------------- */
.subhead{ padding: 56px 0 0; }
.backlink{ font-size:13px; color: var(--text-dim); display:inline-flex; align-items:center; gap:6px; margin-bottom:26px; }
.backlink:hover{ color: var(--text); }
.stat-strip{ display:grid; grid-template-columns: repeat(4,1fr); gap:1px; background: var(--line-soft); border:1px solid var(--line-soft); margin: 34px 0 40px; }
.stat-strip div{ background: var(--bg); padding: 20px 22px; }
.stat-strip b{ display:block; font-size:24px; font-weight:800; }
.stat-strip span{ display:block; font-family: var(--mono); font-size:10px; color: var(--text-faint); margin-top:4px; letter-spacing:0.04em; }
@media (max-width: 720px){ .stat-strip{ grid-template-columns: repeat(2,1fr); } }

/* ---------------- Question bank ---------------- */
.subject-grid{ display:grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line-soft); border:1px solid var(--line-soft); margin-bottom: 26px; }
.subject-tile{ background: var(--bg); padding: 16px; display:flex; align-items:center; gap:12px; text-align:left; border:none; color:var(--text); }
.subject-tile.active{ background: rgba(255,106,26,0.08); box-shadow: inset 0 0 0 1px var(--orange); }
.subject-tile .sicon{ width:30px; height:30px; border-radius:5px; background: var(--bg-raised); display:flex; align-items:center; justify-content:center; font-size:14px; flex-shrink:0; }
.subject-tile .stext b{ display:block; font-size:13.5px; }
.subject-tile .stext span{ display:block; font-size:11px; color: var(--text-faint); }
@media (max-width: 860px){ .subject-grid{ grid-template-columns: repeat(2,1fr); } }

.qbank-layout{ display:grid; grid-template-columns: 1fr 300px; gap: 20px; }
@media (max-width: 900px){ .qbank-layout{ grid-template-columns: 1fr; } }
.qcard{ background: var(--bg-panel); border:1px solid var(--line); border-radius:6px; padding: 24px; }
.qcard-head{ display:flex; justify-content:space-between; align-items:center; margin-bottom: 18px; font-family: var(--mono); font-size:11px; color: var(--text-faint); }
.qcard-head .qtag{ background: rgba(255,106,26,0.12); color: var(--orange); padding:3px 9px; border-radius:3px; }
.q-progress{ font-size:12px; color: var(--text-faint); margin-bottom: 8px; font-family: var(--mono); }
.q-text{ font-size:19px; font-weight:700; margin: 4px 0 20px; }
.q-options{ display:grid; grid-template-columns: 1fr 1fr; gap:12px; margin-bottom:20px; }
@media (max-width:520px){ .q-options{ grid-template-columns:1fr; } }
.q-opt{ display:flex; align-items:center; gap:10px; background: var(--bg-raised); border:1px solid var(--line); border-radius:5px; padding:13px 14px; font-size:13.5px; color:var(--text); }
.q-opt:hover{ border-color: var(--text-dim); }
.q-opt.correct{ border-color: var(--green); background: rgba(53,212,122,0.08); }
.q-opt b{ font-family: var(--mono); font-size:11px; color: var(--text-faint); border:1px solid var(--line); width:20px; height:20px; border-radius:4px; display:flex; align-items:center; justify-content:center; flex-shrink:0; }
.q-actions{ display:flex; align-items:center; gap:20px; }
.q-actions .link-quiet{ font-size:13px; }
.side-panel{ background: var(--bg-panel); border:1px solid var(--line); border-radius:6px; padding: 22px; }
.side-panel h4{ font-size:15px; margin: 10px 0; }
.side-panel > p{ font-size:13px; color: var(--text-dim); margin:0 0 16px; }
.check-list{ list-style:none; margin:0; padding:0; font-size:13px; }
.check-list li{ padding: 8px 0; color: var(--text-dim); display:flex; gap:8px; border-top:1px dashed var(--line-soft); }
.check-list li:first-child{ border-top:none; }
.check-list li::before{ content:"✓"; color: var(--green); font-weight:700; }

/* ---------------- Games ---------------- */
.game-tabs{ display:flex; gap:1px; background: var(--line-soft); border:1px solid var(--line-soft); margin-bottom: 22px; }
.game-tabs button{ flex:1; background: var(--bg); border:none; color: var(--text-dim); padding: 14px; font-size:13.5px; }
.game-tabs button.active{ color: var(--text); box-shadow: inset 0 -2px 0 var(--orange); background: rgba(255,106,26,0.05); }
.game-frame{ background: var(--bg-panel); border:1px solid var(--line); border-radius:6px; overflow:hidden; }
.game-frame-head{ display:flex; justify-content:space-between; align-items:center; padding:14px 20px; border-bottom:1px solid var(--line); }
.game-frame-head .tag{ font-family: var(--mono); font-size:11px; color: var(--orange); }
.game-frame-head h4{ font-size:16px; margin: 2px 0 0; }
.game-frame-body{ display:grid; grid-template-columns: 1fr 220px; gap:0; }
@media (max-width: 800px){ .game-frame-body{ grid-template-columns: 1fr; } }
.game-canvas-wrap{ padding: 20px; border-right:1px solid var(--line); }
@media (max-width: 800px){ .game-canvas-wrap{ border-right:none; border-bottom:1px solid var(--line); } }
canvas{ display:block; width:100%; background: #0d1420; border:1px solid var(--line); border-radius:4px; touch-action:none; }
.game-side{ padding: 20px; display:flex; flex-direction:column; gap:16px; }
.game-stat{ display:flex; justify-content:space-between; }
.game-stat span{ font-family: var(--mono); font-size:10.5px; color: var(--text-faint); }
.game-stat b{ display:block; font-size:16px; }
.game-controls{ display:flex; gap:8px; }
.game-controls button{ flex:1; background: var(--bg-raised); border:1px solid var(--line); border-radius:4px; padding:10px; color:var(--text); font-size:12.5px; }
.game-controls button.primary{ background: var(--orange); color:#181206; border-color: var(--orange); font-weight:700; }
.hint{ font-size:11.5px; color: var(--text-faint); }

/* ---------------- Login ---------------- */
.login-wrap{ min-height: calc(100vh - 0px); display:flex; align-items:center; justify-content:center; padding: 60px 20px; background:
    radial-gradient(circle at 50% 0%, rgba(255,106,26,0.06), transparent 60%);
}
.login-card{ width:100%; max-width: 400px; }
.login-back{ display:block; text-align:left; font-size:12px; color: var(--text-dim); margin-bottom: 20px; }
.login-panel{ background: var(--bg-panel); border:1px solid var(--line); border-radius:8px; padding: 30px; }
.login-panel-head{ display:flex; justify-content:space-between; align-items:center; margin-bottom: 22px; }
.lock{ width:30px; height:30px; border-radius:6px; border:1px solid var(--line); display:flex; align-items:center; justify-content:center; color: var(--text-faint); }
.login-panel h2{ font-size: 24px; margin: 4px 0 8px; }
.login-panel .lede{ margin-bottom: 24px; font-size:13.5px; }
.demo-box{ margin-top:18px; background: rgba(255,106,26,0.06); border:1px solid rgba(255,106,26,0.25); border-radius:5px; padding:12px 14px; font-size:12.5px; }
.demo-box .tag{ font-family: var(--mono); font-size:10px; color: var(--orange); display:block; margin-bottom:6px; letter-spacing:0.05em; }
.demo-box div{ color: var(--text-dim); font-family: var(--mono); }
.login-foot{ text-align:center; margin-top: 20px; font-size:11.5px; color: var(--text-faint); }

/* utility */
.mt-0{ margin-top:0 }
.center{ text-align:center }
.visually-hidden{ position:absolute; width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0); }