@import url('https://fonts.googleapis.com/css2?family=Archivo:wght@500;700;900&family=IBM+Plex+Mono:wght@400;600&display=swap');

:root {
  --bg:    #071828; --bg2: #082745; --paper: #f2ecdd; --ink: #16212c;
  --amber: #e8a33d; --danger: #d4483a; --success: #49b07d;
  --sidebar-w: 220px;
}
* { box-sizing: border-box; margin:0; padding:0; }
html,body { height:100%; background:var(--bg); color:var(--paper); font-family:'Archivo',sans-serif; }

/* ── TOP HUD ── */
.hud-top { display:flex; align-items:center; justify-content:space-between; gap:12px; padding:10px 16px; background:var(--bg2); border-bottom:3px solid var(--amber); flex-wrap:wrap; }
.game-title { font-weight:900; font-size:18px; letter-spacing:.5px; margin:0; }
.game-title span { color:var(--amber); }
.game-subtitle { font-size:9px; letter-spacing:1.5px; color:#8fb0cc; text-transform:uppercase; }
.mode-badge { background:rgba(232,163,61,.2); border:1.5px solid var(--amber); color:var(--amber); font-size:11px; font-weight:700; padding:4px 12px; border-radius:20px; }
.hud-stats { display:flex; gap:16px; font-family:'IBM Plex Mono',monospace; flex-wrap:wrap; }
.hud-stat-label { font-size:9px; letter-spacing:1px; color:#8fb0cc; text-transform:uppercase; }
.hud-stat-value { font-size:15px; font-weight:600; }
.hud-stat-value.over { color:var(--danger); }
#hud-wave { color:var(--amber); }
.hud-actions { display:flex; gap:6px; flex-wrap:wrap; }
button { font-family:'Archivo',sans-serif; font-weight:700; font-size:12px; border:none; border-radius:6px; padding:7px 13px; cursor:pointer; transition:transform .08s; }
button:active { transform:scale(.95); }
button:disabled { opacity:.35; cursor:not-allowed; }
.btn-primary { background:var(--amber); color:var(--ink); font-size:13px; padding:9px 18px; }
.btn-secondary { background:transparent; color:var(--paper); border:1.5px solid #3d5a73; padding:7px 12px; }
.btn-secondary:hover { border-color:var(--amber); }
.nav-icon { text-decoration:none; display:flex; align-items:center; }
.btn-tiny { background:transparent; color:#8fb0cc; border:1px solid #2a5070; font-size:11px; padding:4px 10px; }

/* ── LEVEL BAR ── */
.level-bar { display:flex; align-items:center; gap:10px; padding:6px 16px; background:var(--bg2); border-bottom:1px solid #16456b; flex-wrap:wrap; }
#level-tabs { display:flex; gap:4px; }
.level-tab { font-size:11px; font-weight:700; padding:4px 10px; border-radius:4px; border:1.5px solid #2a5070; background:transparent; color:#8fb0cc; cursor:pointer; }
.level-tab.active, .level-tab:hover { background:var(--amber); color:var(--ink); border-color:var(--amber); }
.level-desc { font-size:11px; color:#8fb0cc; flex:1; }

/* ── GAME AREA ── */
.game-area { flex:1; display:flex; min-height:0; overflow:hidden; }

/* ── SIDEBARS ── */
.sidebar { width:var(--sidebar-w); flex-shrink:0; background:var(--paper); color:var(--ink); overflow-y:auto; overflow-x:hidden; }
.sidebar-left { border-right:2px solid #d0c9b8; }
.sidebar-right { border-left:2px solid #d0c9b8; }

/* Panel sections */
.panel-section { border-bottom:2px solid #e3ddcb; }
.panel-header { display:flex; justify-content:space-between; align-items:center; padding:9px 12px; cursor:pointer; font-size:11px; font-weight:700; letter-spacing:.5px; text-transform:uppercase; user-select:none; transition:opacity .1s; }
.panel-header:hover { opacity:.85; }
.chevron { font-size:12px; transition:transform .2s; }
.panel-section:not(.open) .chevron { transform:rotate(-90deg); }
.panel-section:not(.open) .panel-body { display:none; }
.panel-body { padding:10px; display:flex; flex-direction:column; gap:6px; }

/* Header colors */
.mat-header   { background:#fff8ee; color:#6b4c1e; border-bottom:1px solid #e3ddcb; }
.build-header { background:#eef4fb; color:#1a4a6b; border-bottom:1px solid #cfe3ee; }
.test-header  { background:#fff4e6; color:#7a4400; border-bottom:1px solid #e8c090; }
.extra-header { background:#f5f5f0; color:#4a4334; border-bottom:1px solid #d8d5c8; }
.veh-header   { background:#eef8f0; color:#1a5c30; border-bottom:1px solid #b8e0c0; }
.ch-header    { background:#f5eefb; color:#5a1a7a; border-bottom:1px solid #d0b0e8; }
.stats-header-sec { background:#fff8e6; color:#6b4c00; border-bottom:1px solid #e8d090; }
.tips-header-sec  { background:#eef6fb; color:#1a3a5c; border-bottom:1px solid #b0d0e8; }

/* Material cards */
.material-card { display:block; width:100%; text-align:left; background:#fff; border:2px solid transparent; border-radius:7px; padding:8px 10px; cursor:pointer; color:var(--ink); transition:border-color .1s; }
.material-card:hover { border-color:#d0c9b8; }
.material-card.active { border-color:var(--ink); background:#fffaf0; }
.material-card.locked { opacity:.4; cursor:not-allowed; }
.mc-row { display:flex; align-items:center; gap:7px; }
.mc-swatch { width:12px; height:12px; border-radius:3px; flex-shrink:0; }
.mc-name { font-weight:700; font-size:12px; flex:1; }
.mc-price { font-family:'IBM Plex Mono',monospace; font-size:10px; color:#8a7d6a; }
.mc-bar { display:flex; gap:2px; margin:3px 0 2px; }
.mc-bar span { flex:1; height:3px; background:#e3ddcb; border-radius:2px; }
.mc-bar span.f { background:var(--ink); }
.mc-sub { font-size:10px; color:#847b69; line-height:1.3; }

/* Tool buttons */
.tool-btn { display:block; width:100%; text-align:left; background:#fff; color:var(--ink); border:1.5px solid #d0c9b8; border-radius:6px; padding:7px 10px; font-size:11px; font-weight:700; cursor:pointer; }
.tool-btn:hover { background:#fffaf0; border-color:var(--amber); }
.tool-btn.active-tool { background:#fff8e8; border-color:var(--amber); color:#8a5e0a; }
.tool-group-label { font-size:9px; letter-spacing:1px; text-transform:uppercase; color:#8a7d6a; font-weight:700; padding:2px 0; margin-top:4px; }
.save-input { width:100%; padding:7px 9px; border:1.5px solid #d0c9b8; border-radius:6px; font-family:'Archivo',sans-serif; font-size:11px; color:var(--ink); background:#fff; }
.saves-list { max-height:110px; overflow-y:auto; }
.save-row { padding:4px 0; border-bottom:1px solid #e3ddcb; font-size:11px; }
.save-name { font-weight:700; color:var(--ink); }
.save-meta { font-size:9px; color:#847b69; }
.save-actions { display:flex; gap:4px; margin-top:2px; }
.save-act-btn { font-size:10px; padding:2px 7px; border-radius:4px; border:1px solid #d0c9b8; background:#fff; color:var(--ink); cursor:pointer; }
.save-act-btn.del { color:var(--danger); }

/* Spawn buttons */
.spawn-btn { display:flex; align-items:center; gap:10px; width:100%; background:#fff; color:var(--ink); border:2px solid transparent; border-radius:7px; padding:8px 10px; cursor:pointer; font-family:'Archivo',sans-serif; }
.spawn-btn:hover { border-color:var(--amber); background:#fffaf0; }
.spawn-btn.danger:hover { border-color:var(--danger); background:#fff5f5; }
.s-emoji { font-size:18px; line-height:1; flex-shrink:0; }
.s-info { display:flex; flex-direction:column; text-align:left; }
.s-name { font-weight:700; font-size:12px; }
.s-kg { font-family:'IBM Plex Mono',monospace; font-size:9px; color:#6b6354; }

/* Challenges */
.challenge-btn { display:block; width:100%; text-align:left; background:#fff; color:var(--ink); border:2px solid transparent; border-radius:7px; padding:8px 10px; cursor:pointer; font-family:'Archivo',sans-serif; }
.challenge-btn:hover { border-color:#9b59b6; background:#fdf5ff; }
.ch-name { display:block; font-weight:700; font-size:12px; }
.ch-desc { display:block; font-size:10px; color:#847b69; margin-top:2px; line-height:1.3; }

/* Live stats */
.stat-row { display:flex; justify-content:space-between; align-items:center; padding:4px 0; border-bottom:1px solid #e3ddcb; font-size:11px; }
.stat-label { color:#847b69; }
.stat-val { font-family:'IBM Plex Mono',monospace; font-weight:600; color:var(--ink); font-size:11px; }

/* Achievements */
.ach-row { display:flex; align-items:flex-start; gap:6px; padding:4px 0; border-bottom:1px solid #e3ddcb; }
.ach-row.locked { opacity:.4; }
.ach-icon-sm { font-size:14px; flex-shrink:0; margin-top:1px; }
.ach-n { font-size:11px; font-weight:600; color:var(--ink); }
.ach-d { font-size:9px; color:#847b69; line-height:1.3; }

/* Tips */
.tip-card { background:#fff; border-radius:6px; padding:7px 9px; font-size:10.5px; color:var(--ink); line-height:1.45; border-left:3px solid var(--amber); }
.shortcut-mini { font-size:10px; color:#4a4334; padding:2px 0; }
.sc-k { background:var(--ink); color:var(--paper); font-family:'IBM Plex Mono',monospace; font-size:9px; padding:2px 5px; border-radius:3px; }
.visit-label { font-size:9px; color:#8a7d6a; text-align:center; margin-top:8px; font-style:italic; }

/* Leaderboard */
.lb-title { font-weight:700; color:var(--amber); font-size:11px; margin-bottom:4px; }
.lb-chart { display:flex; align-items:flex-end; gap:3px; height:50px; margin:6px 0 8px; }
.lb-bar-wrap { flex:1; display:flex; align-items:flex-end; }
.lb-bar-fill { width:100%; border-radius:2px 2px 0 0; min-height:3px; }
.lb-row { display:flex; gap:5px; align-items:center; padding:3px 0; border-bottom:1px solid #e3ddcb; font-size:10px; }
.lb-rank { font-weight:700; color:#847b69; width:16px; }
.lb-cost { font-family:'IBM Plex Mono',monospace; color:var(--ink); flex:1; }
.lb-grade { font-weight:700; color:var(--amber); width:22px; }
.lb-date { color:#a09880; font-size:9px; }
.lb-empty { color:#847b69; font-size:11px; font-style:italic; }

/* ── CANVAS ── */
.stage-wrap { position:relative; flex:1; min-width:0; min-height:0; overflow:hidden; background:var(--bg); }
#stage { display:block; cursor:crosshair; }

/* ── BANNER ── */
.banner { position:absolute; inset:0; background:rgba(8,20,35,.82); display:flex; align-items:center; justify-content:center; opacity:0; pointer-events:none; transition:opacity .25s; }
.banner.visible { opacity:1; pointer-events:all; }
.banner-card { background:var(--paper); color:var(--ink); border-radius:12px; padding:26px 30px; max-width:380px; text-align:center; }
.banner-won .banner-card { border-top:4px solid var(--success); }
.banner-card h2 { margin:0 0 10px; font-size:20px; }
.banner-card p { font-size:13px; line-height:1.6; color:#4a4334; margin:0 0 16px; }

/* ── BOTTOM BAR ── */
.hud-bottom { padding:8px 16px 12px; background:var(--bg2); border-top:1px solid #16456b; }
.bottom-strip { display:flex; align-items:center; gap:16px; flex-wrap:wrap; justify-content:center; }
.legend { display:flex; align-items:center; gap:6px; font-size:10px; color:#8fb0cc; }
.legend-bar { width:100px; height:6px; border-radius:4px; background:linear-gradient(90deg,#cfd9e0 0%,#e8a33d 60%,#d4483a 100%); }
.legend-bar-comp { width:40px; height:6px; border-radius:4px; background:linear-gradient(90deg,#88ccff,#c89a64); }
#instructions { font-size:11px; color:#d7e6f2; max-width:440px; text-align:center; }
.shortcuts { font-size:9px; color:#5a7a94; }
kbd { background:rgba(255,255,255,.1); border-radius:3px; padding:1px 4px; font-size:9px; font-family:'IBM Plex Mono',monospace; }

/* ── APP SHELL LAYOUT ── */
.app-shell { height:100vh; display:flex; flex-direction:column; overflow:hidden; }
.game-area { flex:1; }

/* ── SHORTCUTS MODAL ── */
.shortcuts-modal { display:none; position:fixed; inset:0; z-index:1000; background:rgba(4,12,24,.88); align-items:center; justify-content:center; }
.shortcuts-card { background:var(--paper); color:var(--ink); border-radius:14px; padding:24px 28px; max-width:440px; width:90%; border-top:4px solid var(--amber); }
.shortcuts-card h2 { font-size:18px; font-weight:900; margin-bottom:16px; }
.shortcut-grid { display:grid; grid-template-columns:1fr 1fr; gap:6px; }
.shortcut-row { display:flex; align-items:center; gap:8px; font-size:12px; }
.sc-key { background:var(--ink); color:var(--paper); font-family:'IBM Plex Mono',monospace; font-size:10px; padding:2px 7px; border-radius:4px; }
.sc-action { color:#4a4334; }
.shortcuts-close-btn { margin-top:16px; width:100%; background:var(--amber); color:var(--ink); font-weight:700; padding:9px; border:none; border-radius:7px; cursor:pointer; }

/* ── TUTORIAL ── */
.tutorial-overlay { position:fixed; inset:0; background:rgba(4,12,24,.85); display:flex; align-items:center; justify-content:center; z-index:1000; }
.tutorial-card { background:var(--paper); color:var(--ink); border-radius:14px; padding:28px 32px; max-width:400px; text-align:center; border-top:4px solid var(--amber); }
.tut-step { font-size:10px; color:#8a7d6a; text-transform:uppercase; letter-spacing:1px; margin-bottom:6px; }
.tutorial-card h2 { font-size:20px; margin-bottom:10px; }
.tutorial-card p { font-size:13px; line-height:1.6; color:#4a4334; margin:0 0 18px; }
.tut-buttons { display:flex; gap:8px; justify-content:center; }

/* ── LESSON PANEL ── */
#lesson-panel { display:none; position:fixed; bottom:60px; left:50%; transform:translateX(-50%); width:min(500px,92vw); z-index:500; background:var(--paper); color:var(--ink); border-radius:12px; padding:18px 22px; border-top:4px solid var(--amber); box-shadow:0 12px 40px rgba(0,0,0,.5); }
.lesson-header { display:flex; justify-content:space-between; align-items:center; margin-bottom:8px; }
#lesson-title { font-size:15px; font-weight:900; }
#lesson-close { background:none; border:none; font-size:18px; cursor:pointer; color:#847b69; }
.lesson-concept { font-size:12px; color:#4a4334; line-height:1.5; margin-bottom:8px; }
.lesson-goal-box { background:rgba(73,176,125,.12); border:1px solid #49b07d; border-radius:7px; padding:8px 12px; font-size:12px; margin-bottom:6px; }
.lesson-hint-box { background:rgba(232,163,61,.1); border:1px solid rgba(232,163,61,.3); border-radius:7px; padding:8px 12px; font-size:11px; color:#847b69; }
#lesson-explain { display:none; background:#e8f5e9; border-left:4px solid #49b07d; border-radius:0 7px 7px 0; padding:10px 12px; margin-top:8px; }
#lesson-explain-text { font-size:12px; color:var(--ink); line-height:1.5; }
.lesson-btns { margin-top:10px; }
#lesson-next { display:none; background:var(--amber); color:var(--ink); font-weight:700; border:none; border-radius:6px; padding:8px 16px; cursor:pointer; }

/* ── FAILURE ANALYSIS ── */
#failure-analysis { display:none; position:fixed; bottom:60px; right:20px; width:min(300px,88vw); z-index:500; background:#1a0a0a; color:var(--paper); border-radius:10px; padding:16px 18px; border-left:4px solid var(--danger); box-shadow:0 10px 30px rgba(0,0,0,.6); }
#fa-member { font-size:12px; font-weight:700; color:var(--danger); margin-bottom:6px; }
#fa-msg { font-size:11px; color:#cfe3ee; line-height:1.55; }
#fa-close { position:absolute; top:8px; right:10px; background:none; border:none; color:#847b69; cursor:pointer; font-size:16px; }

/* ── QUIZ ── */
#quiz-panel { display:none; position:fixed; top:50%; left:50%; transform:translate(-50%,-50%); width:min(460px,90vw); z-index:600; max-height:90vh; overflow-y:auto; background:var(--paper); color:var(--ink); border-radius:13px; padding:22px; border-top:4px solid var(--bg); box-shadow:0 16px 50px rgba(0,0,0,.6); }
.quiz-title { font-size:17px; font-weight:900; margin-bottom:16px; }
.quiz-q { margin-bottom:18px; }
.quiz-question { font-size:13px; font-weight:700; margin-bottom:8px; }
.quiz-opt { display:block; width:100%; text-align:left; background:#fff; border:1.5px solid #d0c9b8; border-radius:7px; padding:8px 12px; font-size:12px; cursor:pointer; margin-bottom:5px; font-family:'Archivo',sans-serif; color:var(--ink); }
.quiz-opt:hover:not(:disabled) { border-color:var(--amber); }
.quiz-opt.correct { border-color:#49b07d; background:#e8f5e9; font-weight:700; }
.quiz-opt.wrong { border-color:var(--danger); background:#fff5f5; }
.quiz-explain { font-size:11px; color:#4a4334; background:#f5f5f0; border-radius:5px; padding:8px 10px; line-height:1.5; margin-top:5px; }
.quiz-close { width:100%; background:var(--bg); color:var(--paper); font-weight:700; border:none; border-radius:7px; padding:10px; cursor:pointer; margin-top:6px; font-family:'Archivo',sans-serif; }

/* ── ACHIEVEMENT TOAST ── */
.ach-toast { position:fixed; bottom:-80px; left:50%; transform:translateX(-50%); background:var(--paper); color:var(--ink); border-radius:12px; padding:12px 18px; display:flex; align-items:center; gap:12px; box-shadow:0 8px 32px rgba(0,0,0,.4); border-left:5px solid var(--amber); transition:bottom .4s cubic-bezier(.34,1.56,.64,1); z-index:999; min-width:260px; }
.ach-toast.show { bottom:20px; }
.ach-toast .ach-icon { font-size:26px; }
.ach-toast .ach-name { font-weight:700; font-size:12px; }
.ach-toast .ach-desc { font-size:10px; color:#847b69; }

/* ── NIGHT UI ── */
body.night-ui .sidebar { background:#0d1f2d; color:var(--paper); border-color:#1c4a73; }
body.night-ui .mat-header   { background:#0a1a24; color:#c89a64; border-color:#1c4a73; }
body.night-ui .build-header { background:#08182a; color:#8fb0cc; border-color:#1c4a73; }
body.night-ui .test-header  { background:#1a0e06; color:#e8a33d; border-color:#3a2010; }
body.night-ui .extra-header { background:#0d1820; color:#8fb0cc; border-color:#1c4a73; }
body.night-ui .veh-header   { background:#081808; color:#49b07d; border-color:#1a4a2a; }
body.night-ui .ch-header    { background:#180820; color:#c090e0; border-color:#3a1a5a; }
body.night-ui .stats-header-sec { background:#1a1000; color:#e8a33d; border-color:#3a2800; }
body.night-ui .tips-header-sec  { background:#080e18; color:#8fb0cc; border-color:#1c4a73; }
body.night-ui .material-card,
body.night-ui .tool-btn,
body.night-ui .spawn-btn,
body.night-ui .challenge-btn { background:rgba(255,255,255,.05); color:var(--paper); border-color:#2a5070; }
body.night-ui .material-card.active { background:rgba(232,163,61,.15); border-color:var(--amber); }
body.night-ui .mc-sub, body.night-ui .mc-price, body.night-ui .tool-group-label,
body.night-ui .stat-label, body.night-ui .lb-rank, body.night-ui .lb-date { color:#8fb0cc; }
body.night-ui .mc-bar span { background:#2a5070; }
body.night-ui .save-input { background:#0a1f30; border-color:#2a5070; color:var(--paper); }
body.night-ui .tip-card { background:rgba(255,255,255,.06); border-color:#3a5a73; color:var(--paper); }
body.night-ui .panel-section { border-color:#1c4a73; }

/* ── MOBILE ── */
@media(max-width:900px) {
  .sidebar { width:100%; border:none; }
  .game-area { flex-direction:column; }
  .hud-stats { gap:8px; }
  .hud-actions button, .hud-actions a { font-size:11px; padding:6px 10px; }
}
html,body { height:100%; overflow:hidden; }


/* ── TIME CONTROLS ── */
.time-row { display:flex; gap:4px; }
.time-row .time-btn { flex:1; text-align:center; padding:6px 4px; font-size:11px; }

/* ── UPDATE LOG ── */
.update-entry { margin-bottom:10px; border-left:3px solid var(--amber); padding-left:8px; }
.update-header { display:flex; align-items:center; gap:6px; flex-wrap:wrap; margin-bottom:4px; }
.update-icon { font-size:14px; }
.update-ver { font-family:'IBM Plex Mono',monospace; font-size:10px; font-weight:700; color:var(--amber); background:rgba(232,163,61,.12); padding:1px 6px; border-radius:8px; }
.update-title { font-size:11px; font-weight:700; color:var(--ink); flex:1; }
.update-date { font-size:9px; color:#8a7d6a; font-family:'IBM Plex Mono',monospace; }
.update-changes { list-style:none; margin:0; padding:0; }
.update-changes li { font-size:10px; color:#4a4334; padding:1px 0; display:flex; gap:5px; line-height:1.4; }
.update-changes li::before { content:'·'; color:#e8a33d; flex-shrink:0; }

/* Night mode for update log */
body.night-ui .update-title { color:var(--paper); }
body.night-ui .update-changes li { color:#8fb0cc; }

/* ── STAR RATING (already drawn on canvas, but also used in banner) ── */
.star-display { font-size:20px; color:var(--amber); letter-spacing:2px; text-align:center; margin:8px 0 4px; }
.star-label { font-size:11px; color:#6b6354; text-align:center; font-family:'IBM Plex Mono',monospace; }