/* ============================================================
   AEDO Play — Build It. Extends play.css tokens (nav/footer/
   reveal shared from there). Game-specific UI only.
   ============================================================ */

.bi-hero { position: relative; z-index: 1; padding: 44px 0 20px; text-align: center; }
.bi-hero-inner { max-width: 760px; }
.bi-hero h1 { font-family: var(--font2); font-size: clamp(28px, 4.4vw, 44px); line-height: 1.12; margin: 10px 0 12px; letter-spacing: -0.01em; }
.bi-hero p { color: var(--text2); font-size: 17px; margin: 0 auto 18px; max-width: 520px; }
.play-eyebrow { display: inline-block; font-family: var(--font-mono); font-size: 12.5px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--accent); background: var(--accent-tint); padding: 6px 14px; border-radius: 999px; margin-bottom: 6px; }
.bi-hero-stats { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; margin: 18px 0 14px; }
.play-stat-chip { display: flex; align-items: center; gap: 7px; background: var(--card); border: 1px solid var(--border); border-radius: 999px; padding: 8px 14px; font-family: var(--font-mono); font-size: 13px; font-weight: 700; box-shadow: var(--shadow); }
.psc-icon { font-size: 15px; }
.psc-label { color: var(--text3); font-weight: 500; font-size: 12px; }
.bi-disclaimer { font-size: 12.5px; color: var(--text3); max-width: 520px; margin: 0 auto; line-height: 1.55; }

/* ── panels / cards ── */
.bi-panel { position: relative; z-index: 1; margin: 30px 0; }
.bi-panel-head h2 { font-family: var(--font2); font-size: 24px; margin: 0 0 4px; }
.bi-panel-head p { color: var(--text2); margin: 0 0 20px; font-size: 15px; }

.bi-level-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px; }
.bi-level-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 18px; cursor: pointer; transition: var(--transition); text-align: left; position: relative; }
.bi-level-card:hover:not(.locked) { transform: translateY(-3px); box-shadow: var(--shadow-lg); border-color: var(--border2); }
.bi-level-card.locked { opacity: 0.5; cursor: not-allowed; }
.bi-level-num { font-family: var(--font-mono); font-size: 11.5px; font-weight: 700; color: var(--text3); text-transform: uppercase; letter-spacing: 0.05em; }
.bi-level-card h3 { font-size: 17px; margin: 6px 0 6px; font-family: var(--font2); }
.bi-level-card p { font-size: 13px; color: var(--text2); margin: 0 0 12px; min-height: 34px; }
.bi-level-meta { display: flex; align-items: center; justify-content: space-between; font-size: 12px; }
.bi-level-stars { font-size: 15px; letter-spacing: 1px; }
.bi-level-tag { font-family: var(--font-mono); font-size: 11px; font-weight: 700; padding: 3px 9px; border-radius: 999px; background: var(--blue-tint); color: var(--blue); }
.bi-level-tag.diff-normal { background: var(--accent-tint); color: var(--accent); }
.bi-level-tag.diff-hard { background: var(--red-tint); color: var(--red); }
.bi-lock-icon { position: absolute; top: 14px; right: 16px; font-size: 15px; }

/* ── game screen ── */
.bi-game { position: relative; z-index: 1; margin: 24px 0 40px; }
.bi-game-topbar { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 14px; flex-wrap: wrap; }
.bi-game-title { text-align: center; flex: 1; min-width: 180px; }
.bi-game-mission { font-family: var(--font-mono); font-size: 11.5px; font-weight: 700; color: var(--text3); text-transform: uppercase; letter-spacing: 0.05em; }
.bi-game-title h2 { margin: 2px 0 0; font-size: 19px; font-family: var(--font2); }

.bi-btn { font-family: var(--font); font-weight: 700; font-size: 14px; border-radius: var(--radius); padding: 10px 16px; border: 1px solid transparent; cursor: pointer; transition: var(--transition); white-space: nowrap; }
.bi-btn-primary { background: var(--accent); color: #fff; }
.bi-btn-primary:hover { background: var(--accent2); }
.bi-btn-primary:disabled { background: var(--text3); cursor: not-allowed; }
.bi-btn-ghost { background: var(--card); color: var(--text); border-color: var(--border2); }
.bi-btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.bi-btn-ghost:disabled { opacity: 0.4; cursor: not-allowed; }

.bi-hud { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 12px; }
.bi-hud-stat { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 10px 14px; }
.bi-hud-label { display: block; font-size: 11px; color: var(--text3); font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; }
.bi-hud-val { font-family: var(--font-mono); font-size: 16px; font-weight: 700; }
.bi-hud-val small { font-family: var(--font); font-weight: 500; color: var(--text3); font-size: 11px; }
.bi-hud-bar { height: 4px; background: var(--bg3); border-radius: 3px; margin-top: 6px; overflow: hidden; }
.bi-hud-bar-fill { height: 100%; background: var(--green); border-radius: 3px; transition: width 0.25s ease, background 0.25s ease; }
.bi-hud-bar-fill.over { background: var(--red); }

.bi-material-bar { display: flex; gap: 8px; margin-bottom: 12px; flex-wrap: wrap; }
.bi-mat-btn { display: flex; align-items: center; gap: 8px; background: var(--card); border: 2px solid var(--border); border-radius: var(--radius); padding: 8px 13px; cursor: pointer; font-size: 13px; font-weight: 700; transition: var(--transition); }
.bi-mat-btn .swatch { width: 14px; height: 14px; border-radius: 3px; display: inline-block; }
.bi-mat-btn.active { border-color: var(--accent); background: var(--accent-tint); }
.bi-mat-btn .mat-sub { font-weight: 500; color: var(--text3); font-size: 11px; }

.bi-canvas-wrap { position: relative; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow); touch-action: none; }
#bi-canvas { display: block; width: 100%; height: 380px; cursor: crosshair; }
@media (min-width: 720px) { #bi-canvas { height: 460px; } }
.bi-toast { position: absolute; top: 12px; left: 50%; transform: translateX(-50%) translateY(-8px); background: var(--ink); color: #fff; font-size: 13px; font-weight: 600; padding: 8px 16px; border-radius: 999px; opacity: 0; transition: 0.25s ease; pointer-events: none; }
.bi-toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

.bi-stress-legend { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-top: 10px; font-size: 12.5px; color: var(--text3); }
.bi-legend-item { display: flex; align-items: center; gap: 5px; font-weight: 600; color: var(--text2); }
.bi-legend-swatch { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }

.bi-controls { display: flex; gap: 10px; margin-top: 14px; flex-wrap: wrap; }
.bi-controls .bi-btn-primary { flex: 1; min-width: 180px; }
.bi-hint-line { text-align: center; font-size: 13.5px; color: var(--blue); background: var(--blue-tint); border-radius: var(--radius); padding: 10px 14px; margin-top: 12px; display: none; }
.bi-hint-line.show { display: block; }

/* ── result overlay ── */
.bi-result-overlay[hidden] { display: none; }
.bi-result-overlay { position: fixed; inset: 0; z-index: 900; background: rgba(15,32,51,0.55); backdrop-filter: blur(3px); display: flex; align-items: center; justify-content: center; padding: 20px; }
.bi-result-card { background: var(--card); border-radius: var(--radius-lg); padding: 28px; max-width: 440px; width: 100%; max-height: 88vh; overflow-y: auto; box-shadow: var(--shadow-lg); text-align: center; animation: bi-pop 0.3s cubic-bezier(0.34,1.56,0.64,1); }
@keyframes bi-pop { from { transform: scale(0.9); opacity: 0; } to { transform: scale(1); opacity: 1; } }
.bi-result-icon { font-size: 46px; margin-bottom: 6px; }
.bi-result-card h2 { font-family: var(--font2); font-size: 22px; margin: 0 0 6px; }
.bi-result-stars { font-size: 26px; letter-spacing: 4px; margin: 8px 0; }
.bi-result-stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; margin: 14px 0; text-align: left; }
.bi-result-stat { background: var(--bg3); border-radius: var(--radius); padding: 9px 12px; }
.bi-result-stat b { display: block; font-family: var(--font-mono); font-size: 15px; }
.bi-result-stat span { font-size: 11px; color: var(--text3); }
.bi-insight { background: var(--accent-tint); border-radius: var(--radius); padding: 12px 14px; text-align: left; font-size: 13.5px; line-height: 1.55; margin: 12px 0; }
.bi-insight b { display: block; color: var(--accent); font-size: 11.5px; text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 3px; }
.bi-insight-toggle { background: none; border: none; color: var(--blue); font-size: 12.5px; font-weight: 700; cursor: pointer; padding: 4px 0; }
.bi-insight-advanced { display: none; font-size: 13px; color: var(--text2); margin-top: 8px; padding-top: 8px; border-top: 1px dashed var(--border2); }
.bi-insight-advanced.show { display: block; }
.bi-xp-gain { font-family: var(--font-mono); font-weight: 700; color: var(--accent); margin: 4px 0 14px; }
.bi-result-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.bi-result-actions .bi-btn { flex: 1; min-width: 120px; }

@media (prefers-reduced-motion: reduce) {
  .bi-result-card { animation: none; }
  .bi-hud-bar-fill, .bi-toast { transition: none; }
}