/* ============================================
   UP/DOWN 予言ゲーム — Premium Dark Theme
   ============================================ */

/* --- CSS Variables --- */
:root {
  --bg-deep: #06080f;
  --bg-main: #0c1018;
  --surface: rgba(18, 24, 38, 0.85);
  --surface-solid: #121826;
  --glass: rgba(255, 255, 255, 0.04);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-strong: rgba(255, 255, 255, 0.07);
  --text: #e8edf5;
  --text-dim: #6b7a94;
  --text-muted: #3e4d66;
  --accent: #6c9fff;
  --accent-glow: rgba(108, 159, 255, 0.25);
  --red: #ff5c6a;
  --red-glow: rgba(255, 92, 106, 0.2);
  --green: #4ade80;
  --green-glow: rgba(74, 222, 128, 0.2);
  --gold: #fbbf24;
  --gold-glow: rgba(251, 191, 36, 0.2);
  --purple: #c084fc;
  --purple-glow: rgba(192, 132, 252, 0.2);
  --heart: #ff6b8a;
  --diamond: #ff9f43;
  --spade: #7aa2f7;
  --club: #73daca;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Reset & Base --- */
*, *::before, *::after {
  margin: 0; padding: 0; box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html { font-size: 16px; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Hiragino Sans', 'Noto Sans JP', sans-serif;
  background: var(--bg-deep);
  color: var(--text);
  min-height: 100dvh;
  overflow-x: hidden;
  padding-bottom: env(safe-area-inset-bottom, 24px);
  position: relative;
}

/* --- Animated Background --- */
#bgCanvas {
  position: fixed; inset: 0; z-index: 0;
  pointer-events: none; opacity: 0.5;
}

body::before {
  content: '';
  position: fixed; inset: 0; z-index: 0;
  background:
    radial-gradient(ellipse 60% 50% at 20% 20%, rgba(108, 159, 255, 0.06), transparent),
    radial-gradient(ellipse 50% 40% at 80% 80%, rgba(192, 132, 252, 0.05), transparent),
    radial-gradient(ellipse 40% 30% at 50% 50%, rgba(74, 222, 128, 0.03), transparent);
  pointer-events: none;
}

/* --- Header --- */
.header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px;
  background: rgba(12, 16, 24, 0.9);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  position: sticky; top: 0; z-index: 50;
}

.header h1 {
  font-size: 16px; font-weight: 900; letter-spacing: 1px;
  display: flex; align-items: center; gap: 6px;
}
.header h1 .icon { font-size: 18px; }
.header h1 .up { color: var(--red); }
.header h1 .down { color: var(--accent); }

.hdr-btns { display: flex; gap: 8px; }
.hdr-btns button {
  background: var(--glass-strong);
  border: 1px solid var(--glass-border);
  color: var(--text-dim); border-radius: var(--radius-sm);
  padding: 8px 14px; font-size: 12px; font-weight: 600;
  cursor: pointer; transition: var(--transition);
  backdrop-filter: blur(10px);
}
.hdr-btns button:active { opacity: 0.6; transform: scale(0.95); }

/* --- Game Area --- */
.game-area {
  padding: 12px 16px; max-width: 460px; margin: 0 auto;
  position: relative; z-index: 1;
}

/* --- Score Bar --- */
.score-bar {
  display: flex; gap: 6px; flex-wrap: wrap;
  margin-bottom: 12px; justify-content: center;
}
.score-chip {
  padding: 6px 14px; border-radius: 24px; font-size: 11px;
  background: var(--glass); border: 1px solid var(--glass-border);
  display: flex; align-items: center; gap: 6px;
  backdrop-filter: blur(10px); transition: var(--transition);
}
.score-chip.active-turn {
  border-color: var(--accent);
  background: rgba(108, 159, 255, 0.12);
  box-shadow: 0 0 16px var(--accent-glow), inset 0 0 12px rgba(108, 159, 255, 0.06);
}
.sc-name { font-weight: 700; }
.sc-score { color: var(--text-dim); font-size: 10px; }

/* --- Player Bar --- */
.player-bar {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  padding: 14px 16px;
  background: var(--glass);
  backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius); margin-bottom: 12px;
  position: relative; overflow: hidden;
}
.player-bar::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(108, 159, 255, 0.05), transparent 60%);
  pointer-events: none;
}
.turn-label { font-size: 12px; color: var(--text-dim); font-weight: 600; }
.turn-name { font-size: 20px; font-weight: 900; color: var(--accent); }

.mode-badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 4px 12px; border-radius: 20px;
  font-size: 10px; font-weight: 700;
  letter-spacing: 0.5px;
}
.mode-badge.drink { background: linear-gradient(135deg, #ff6b35, #ff8c42); color: #fff; }
.mode-badge.talk { background: linear-gradient(135deg, #22c55e, #4ade80); color: #fff; }

/* --- Deck Info --- */
.deck-info {
  text-align: center; font-size: 11px; color: var(--text-dim);
  margin-bottom: 8px; font-weight: 600; letter-spacing: 0.5px;
}

/* --- Cards Display --- */
.cards-display {
  display: flex; align-items: center; justify-content: center;
  gap: 16px; margin-bottom: 14px; min-height: 170px;
  perspective: 800px;
}
.card-slot { text-align: center; }
.card-slot-label {
  font-size: 10px; color: var(--text-dim); margin-bottom: 4px;
  text-transform: uppercase; letter-spacing: 1.5px; font-weight: 700;
}

/* --- Playing Card --- */
.playing-card {
  width: 100px; height: 142px; border-radius: 14px;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  font-weight: 700; position: relative;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5), 0 2px 8px rgba(0, 0, 0, 0.3);
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  transform-style: preserve-3d;
}

.playing-card.face-up {
  background: linear-gradient(160deg, #ffffff 0%, #f8f8fa 40%, #eef0f4 100%);
  color: #1a1a2e;
  border: 1px solid rgba(200, 200, 210, 0.6);
}
.playing-card.face-up::after {
  content: ''; position: absolute; inset: 0; border-radius: 14px;
  background: linear-gradient(135deg, rgba(255,255,255,0.4) 0%, transparent 50%);
  pointer-events: none;
}

.playing-card.face-down {
  background: linear-gradient(160deg, #1a3a6c, #0d2147);
  border: 2px solid rgba(42, 90, 156, 0.6);
}
.playing-card.face-down::after {
  content: ''; position: absolute; inset: 0; border-radius: 14px;
  background: linear-gradient(135deg, rgba(255,255,255,0.06) 0%, transparent 50%);
  pointer-events: none;
}

.card-back-pattern {
  position: absolute; inset: 7px; border-radius: 9px;
  border: 1.5px solid rgba(255, 255, 255, 0.08);
  background:
    repeating-linear-gradient(45deg, transparent, transparent 5px, rgba(255,255,255,0.03) 5px, rgba(255,255,255,0.03) 10px),
    repeating-linear-gradient(-45deg, transparent, transparent 5px, rgba(255,255,255,0.02) 5px, rgba(255,255,255,0.02) 10px);
}
.card-back-logo {
  position: absolute; font-size: 18px;
  color: rgba(255, 255, 255, 0.1); letter-spacing: 3px;
  z-index: 1;
}

.card-suit-tl { font-size: 15px; position: absolute; top: 6px; left: 8px; line-height: 1; }
.card-num-tl { font-size: 13px; position: absolute; top: 21px; left: 8px; line-height: 1; font-weight: 900; }
.card-suit-br { font-size: 15px; position: absolute; bottom: 6px; right: 8px; transform: rotate(180deg); line-height: 1; }
.card-num-br { font-size: 13px; position: absolute; bottom: 21px; right: 8px; transform: rotate(180deg); line-height: 1; font-weight: 900; }
.card-center { font-size: 44px; line-height: 1; }
.card-center-num { font-size: 30px; font-weight: 900; margin-bottom: -2px; }

/* Suit Colors */
.suit-heart .card-suit-tl, .suit-heart .card-suit-br, .suit-heart .card-center { color: var(--heart); }
.suit-heart .card-num-tl, .suit-heart .card-num-br, .suit-heart .card-center-num { color: var(--heart); }
.suit-diamond .card-suit-tl, .suit-diamond .card-suit-br, .suit-diamond .card-center { color: var(--diamond); }
.suit-diamond .card-num-tl, .suit-diamond .card-num-br, .suit-diamond .card-center-num { color: var(--diamond); }
.suit-spade .card-suit-tl, .suit-spade .card-suit-br, .suit-spade .card-center { color: var(--spade); }
.suit-spade .card-num-tl, .suit-spade .card-num-br, .suit-spade .card-center-num { color: var(--spade); }
.suit-club .card-suit-tl, .suit-club .card-suit-br, .suit-club .card-center { color: var(--club); }
.suit-club .card-num-tl, .suit-club .card-num-br, .suit-club .card-center-num { color: var(--club); }

/* Joker Card */
.playing-card.joker-card {
  background: linear-gradient(160deg, #2d1b5e, #1a0d40);
  border: 2px solid rgba(107, 63, 192, 0.6);
  color: #d4a0ff;
}
.joker-card .card-center { font-size: 38px; }
.joker-card .card-center-num { font-size: 14px; color: #d4a0ff; letter-spacing: 2px; }

.card-arrow { font-size: 24px; color: var(--text-muted); margin-top: 18px; }

/* Flip Animation */
@keyframes flipIn {
  0% { transform: rotateY(90deg) scale(0.9); opacity: 0.3; }
  100% { transform: rotateY(0) scale(1); opacity: 1; }
}
.card-flip { animation: flipIn 0.5s cubic-bezier(0.4, 0, 0.2, 1); }

/* --- Hint Area --- */
.hint-area {
  text-align: center; margin-bottom: 14px;
  padding: 16px;
  background: var(--glass);
  backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  position: relative; overflow: hidden;
}
.hint-area::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(108, 159, 255, 0.04), transparent 60%);
  pointer-events: none;
}
.hint-label {
  font-size: 10px; color: var(--text-dim); margin-bottom: 4px;
  text-transform: uppercase; letter-spacing: 2px; font-weight: 700;
}
.hint-value { font-size: 34px; font-weight: 900; letter-spacing: 3px; }
.hint-up { color: var(--red); text-shadow: 0 0 20px var(--red-glow); }
.hint-down { color: var(--accent); text-shadow: 0 0 20px var(--accent-glow); }
.hint-same { color: var(--gold); text-shadow: 0 0 20px var(--gold-glow); }
.hint-joker { color: var(--purple); text-shadow: 0 0 20px var(--purple-glow); }

/* --- Number Picker --- */
.number-picker { margin-bottom: 12px; }
.number-picker-label {
  text-align: center; font-size: 12px; color: var(--text-dim);
  margin-bottom: 8px; font-weight: 600;
}
.number-grid {
  display: grid; grid-template-columns: repeat(7, 1fr); gap: 6px;
}
.number-grid button {
  background: var(--glass-strong);
  border: 1px solid var(--glass-border);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: 14px 0; font-size: 16px; font-weight: 800;
  cursor: pointer; transition: var(--transition);
  position: relative; overflow: hidden;
}
.number-grid button::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.05), transparent);
  opacity: 0; transition: var(--transition);
}
.number-grid button:active::before,
.number-grid button.selected::before { opacity: 1; }
.number-grid button:active,
.number-grid button.selected {
  background: linear-gradient(135deg, var(--accent), #5b8def);
  color: #fff; border-color: var(--accent);
  box-shadow: 0 0 16px var(--accent-glow);
  transform: scale(1.06);
}

/* --- Buttons --- */
.confirm-btn {
  display: block; width: 100%; padding: 16px;
  background: linear-gradient(135deg, var(--accent), #5b8def);
  color: #fff; font-size: 16px; font-weight: 800;
  border: none; border-radius: var(--radius); cursor: pointer;
  margin-bottom: 12px; transition: var(--transition);
  box-shadow: 0 4px 20px var(--accent-glow);
  letter-spacing: 1px;
  position: relative; overflow: hidden;
}
.confirm-btn::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.15), transparent 60%);
  pointer-events: none;
}
.confirm-btn:disabled { opacity: 0.25; cursor: default; box-shadow: none; }
.confirm-btn:active:not(:disabled) { opacity: 0.8; transform: scale(0.98); }

.next-btn {
  display: block; width: 100%; padding: 16px;
  background: linear-gradient(135deg, var(--green), #22c55e);
  color: #fff; font-size: 16px; font-weight: 800;
  border: none; border-radius: var(--radius); cursor: pointer;
  margin-bottom: 12px;
  box-shadow: 0 4px 20px var(--green-glow);
  letter-spacing: 1px;
  position: relative; overflow: hidden;
}
.next-btn::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.15), transparent 60%);
  pointer-events: none;
}
.next-btn:active { opacity: 0.8; transform: scale(0.98); }

.start-btn {
  display: block; width: 100%; padding: 18px;
  background: linear-gradient(135deg, var(--gold), #f59e0b);
  color: #fff; font-size: 18px; font-weight: 900;
  border: none; border-radius: var(--radius); cursor: pointer;
  margin-bottom: 14px;
  box-shadow: 0 4px 24px var(--gold-glow);
  letter-spacing: 2px;
  position: relative; overflow: hidden;
}
.start-btn::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.2), transparent 60%);
  pointer-events: none;
}
.start-btn:active { opacity: 0.8; transform: scale(0.98); }

/* --- Pre-game Screen --- */
.pre-game-content {
  text-align: center; padding: 40px 0 20px;
}
.pre-game-suits {
  font-size: 48px; margin-bottom: 14px; letter-spacing: 8px;
  animation: suitFloat 3s ease-in-out infinite;
}
@keyframes suitFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}
.pre-game-suits .s1 { color: var(--spade); }
.pre-game-suits .s2 { color: var(--heart); }
.pre-game-suits .s3 { color: var(--diamond); }
.pre-game-suits .s4 { color: var(--club); }

.pre-game-title {
  font-size: 22px; font-weight: 900; margin-bottom: 8px;
  background: linear-gradient(135deg, var(--text), var(--accent));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.pre-game-desc {
  color: var(--text-dim); font-size: 13px; margin-bottom: 28px;
  line-height: 1.8;
}
.pre-game-desc small { font-size: 11px; color: var(--text-muted); }

.settings-link-btn {
  background: var(--glass-strong);
  border: 1px solid var(--glass-border);
  color: var(--text-dim);
  border-radius: var(--radius); padding: 14px 24px;
  font-size: 13px; font-weight: 600; cursor: pointer;
  width: 100%; transition: var(--transition);
  backdrop-filter: blur(10px);
}
.settings-link-btn:active { opacity: 0.6; }

/* --- Result Overlay --- */
.result-overlay {
  display: none; position: fixed; inset: 0; z-index: 100;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(8px);
  align-items: center; justify-content: center; padding: 20px;
}
.result-overlay.show { display: flex; }

.result-box {
  background: var(--surface-solid);
  border-radius: 24px; padding: 32px 24px;
  text-align: center; max-width: 360px; width: 100%;
  border: 1px solid var(--glass-border);
  animation: popIn 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  position: relative; overflow: hidden;
}
.result-box::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(108, 159, 255, 0.05), transparent 60%);
  pointer-events: none;
}
@keyframes popIn {
  from { transform: scale(0.6) translateY(30px); opacity: 0; }
  to { transform: scale(1) translateY(0); opacity: 1; }
}

.result-icon { font-size: 56px; margin-bottom: 8px; }
.result-title { font-size: 28px; font-weight: 900; margin-bottom: 6px; }
.result-detail { font-size: 13px; color: var(--text-dim); margin-bottom: 10px; }
.result-message {
  font-size: 14px; padding: 14px 16px; margin: 10px 0;
  background: var(--glass-strong);
  border-radius: 12px;
  border-left: 3px solid var(--accent);
  text-align: left; line-height: 1.7; white-space: pre-line;
}
.result-close-btn {
  margin-top: 12px; padding: 14px 40px;
  background: linear-gradient(135deg, var(--accent), #5b8def);
  color: #fff; font-weight: 800; font-size: 15px;
  border: none; border-radius: 12px; cursor: pointer;
  box-shadow: 0 4px 16px var(--accent-glow);
  transition: var(--transition);
}
.result-close-btn:active { opacity: 0.7; transform: scale(0.96); }

/* --- Confetti --- */
@keyframes confettiFall {
  0% { transform: translateY(-10px) rotate(0deg); opacity: 1; }
  100% { transform: translateY(100vh) rotate(720deg); opacity: 0; }
}
.confetti-piece {
  position: fixed; top: -10px; z-index: 101;
  width: 8px; height: 8px; border-radius: 2px;
  animation: confettiFall 2.5s ease-in forwards;
  pointer-events: none;
}

/* --- History --- */
.history-section { margin-bottom: 20px; }
.history-section h3 {
  font-size: 12px; color: var(--text-dim); margin-bottom: 8px;
  font-weight: 700; letter-spacing: 1px;
}
.history-list { display: flex; flex-direction: column; gap: 4px; }
.history-item {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 12px;
  background: var(--glass);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  font-size: 12px; transition: var(--transition);
}
.hi-player { color: var(--accent); font-weight: 700; min-width: 60px; font-size: 11px; }
.hi-cards { flex: 1; color: var(--text-dim); }
.hi-result { font-weight: 800; font-size: 11px; letter-spacing: 0.5px; }
.hi-result.safe { color: var(--green); }
.hi-result.out { color: var(--red); }
.hi-result.exact { color: var(--gold); }
.hi-result.joker { color: var(--purple); }

/* --- Modal --- */
.modal-overlay {
  display: none; position: fixed; inset: 0; z-index: 200;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(6px);
  align-items: flex-end; justify-content: center;
}
.modal-overlay.show { display: flex; }

.modal-content {
  background: var(--surface-solid);
  border-radius: 24px 24px 0 0;
  width: 100%; max-width: 460px; max-height: 85dvh;
  overflow-y: auto; padding: 24px 18px;
  animation: slideUp 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid var(--glass-border);
  border-bottom: none;
}
@keyframes slideUp {
  from { transform: translateY(100%); }
  to { transform: translateY(0); }
}

.modal-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 16px;
}
.modal-header h2 { font-size: 18px; font-weight: 900; }
.modal-close {
  background: var(--glass-strong); border: 1px solid var(--glass-border);
  color: var(--text); width: 36px; height: 36px; border-radius: 50%;
  font-size: 16px; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition);
}
.modal-close:active { opacity: 0.5; transform: scale(0.9); }

.modal-tabs {
  display: flex; gap: 0; margin-bottom: 16px;
  border-bottom: 1px solid var(--glass-border);
}
.modal-tabs button {
  flex: 1; padding: 12px 4px; background: none; border: none;
  color: var(--text-dim); font-size: 13px; font-weight: 700;
  cursor: pointer; border-bottom: 2px solid transparent;
  transition: var(--transition);
}
.modal-tabs button.active {
  color: var(--accent); border-bottom-color: var(--accent);
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* --- Settings Groups --- */
.setting-group { margin-bottom: 18px; }
.sg-label {
  display: block; font-size: 12px; color: var(--text-dim);
  margin-bottom: 8px; font-weight: 700; letter-spacing: 0.5px;
}
.sg-row { display: flex; gap: 6px; flex-wrap: wrap; }

.chip {
  padding: 10px 14px; border-radius: var(--radius-sm);
  font-size: 13px; font-weight: 700;
  border: 1px solid var(--glass-border);
  background: var(--glass-strong); color: var(--text);
  cursor: pointer; transition: var(--transition);
}
.chip.active {
  background: linear-gradient(135deg, var(--accent), #5b8def);
  color: #fff; border-color: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
}
.chip:active { opacity: 0.6; transform: scale(0.95); }

/* Player List */
.player-list { display: flex; flex-direction: column; gap: 6px; }
.player-row { display: flex; align-items: center; gap: 8px; }
.player-row input {
  flex: 1; padding: 11px 12px; border-radius: var(--radius-sm);
  background: var(--glass-strong); border: 1px solid var(--glass-border);
  color: var(--text); font-size: 14px; outline: none;
  transition: var(--transition);
}
.player-row input:focus { border-color: var(--accent); box-shadow: 0 0 8px var(--accent-glow); }
.remove-player {
  background: none; border: none; color: var(--red);
  font-size: 18px; cursor: pointer; padding: 6px 10px;
}

.add-player-btn {
  margin-top: 8px; padding: 11px; width: 100%;
  background: var(--glass); border: 1px dashed var(--glass-border);
  color: var(--accent); border-radius: var(--radius-sm);
  font-size: 13px; font-weight: 600; cursor: pointer;
  transition: var(--transition);
}
.add-player-btn:active { opacity: 0.6; }

/* Penalty List */
.penalty-list {
  display: flex; flex-direction: column; gap: 4px;
  max-height: 200px; overflow-y: auto;
}
.penalty-item {
  display: flex; align-items: center; gap: 6px;
  padding: 8px 10px; background: var(--glass-strong);
  border-radius: 8px; font-size: 12px;
  border: 1px solid var(--glass-border);
}
.penalty-item span { flex: 1; }
.penalty-item button {
  background: none; border: none; color: var(--red);
  font-size: 15px; cursor: pointer;
}

.penalty-add-row { display: flex; gap: 6px; margin-top: 8px; }
.penalty-add-row input {
  flex: 1; padding: 11px 12px; border-radius: var(--radius-sm);
  background: var(--glass-strong); border: 1px solid var(--glass-border);
  color: var(--text); font-size: 13px; outline: none;
}
.penalty-add-row input:focus { border-color: var(--accent); }
.penalty-add-row button {
  padding: 11px 16px; border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--accent), #5b8def);
  color: #fff; border: none; font-weight: 700; font-size: 13px;
  cursor: pointer;
}

.apply-btn {
  display: block; width: 100%; padding: 16px;
  background: linear-gradient(135deg, var(--accent), #5b8def);
  color: #fff; font-weight: 800; font-size: 15px;
  border: none; border-radius: var(--radius); cursor: pointer;
  margin-top: 16px; letter-spacing: 1px;
  box-shadow: 0 4px 16px var(--accent-glow);
  position: relative; overflow: hidden;
}
.apply-btn::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.15), transparent 60%);
  pointer-events: none;
}
.apply-btn:active { opacity: 0.7; transform: scale(0.98); }

/* --- Toast --- */
.toast {
  position: fixed; top: 70px; left: 50%; transform: translateX(-50%) translateY(-10px);
  background: var(--surface-solid); color: var(--text);
  padding: 12px 24px; border-radius: 12px;
  font-size: 13px; font-weight: 600;
  border: 1px solid var(--glass-border); z-index: 300;
  opacity: 0; transition: all 0.3s ease; pointer-events: none;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(16px);
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* --- Utility --- */
.hidden { display: none !important; }

/* --- Scrollbar --- */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--glass-border); border-radius: 4px; }

/* --- Empty History --- */
.history-empty {
  color: var(--text-muted); font-size: 12px; padding: 12px;
  text-align: center;
}