/* Card Dungeon — Midnight Indigo */
:root {
    --cd-accent: #6366F1;
    --cd-accent-light: #A5B4FC;
    --cd-accent-dark: #1E1B4B;
    --cd-glow: rgba(99, 102, 241, 0.5);
    --cd-bg: #060418;
    --cd-surface: #100E2E;
    --cd-surface-light: #1B1942;
    --cd-text: #E0E7FF;
    --cd-text-dim: #8B8AB5;
    --cd-success: #34D399;
    --cd-gold: #FBBF24;
    --cd-danger: #F87171;
    --cd-energy: #FACC15;
    --cd-attack: #EF4444;
    --cd-defense: #38BDF8;
    --cd-skill: #A78BFA;
}

.cd-layout {
    display: flex; justify-content: center; gap: 20px;
    max-width: 1300px; margin: 0 auto; padding: 20px;
    min-height: calc(100vh - 80px);
}
.ad-slot { width: 160px; flex-shrink: 0; }
.ad-slot--left, .ad-slot--right { display: flex; align-items: flex-start; }
.ad-placeholder--vertical {
    width: 160px; height: 600px; background: var(--cd-surface);
    border: 1px dashed var(--cd-text-dim); display: flex; align-items: center;
    justify-content: center; color: var(--cd-text-dim); font-size: 12px; border-radius: 8px;
}

#carddungeon-app { flex: 1; max-width: 900px; min-width: 320px; color: var(--cd-text); }

.screen { display: none; }
.screen.active { display: block; animation: cdFade 0.3s ease; }
@keyframes cdFade { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

.cd-header { text-align: center; padding: 30px 0 20px; }
.cd-logo { display: flex; justify-content: center; gap: 8px; margin-bottom: 14px; }
.cd-card-mini {
    width: 50px; height: 70px; border-radius: 8px; display: flex; align-items: center; justify-content: center;
    font-size: 1.5rem; box-shadow: 0 8px 18px rgba(0,0,0,0.4); transform-origin: bottom center;
}
.cd-card-mini--a { background: linear-gradient(160deg, #EF4444, #B91C1C); color: #fff; transform: rotate(-10deg); }
.cd-card-mini--b { background: linear-gradient(160deg, #A78BFA, #6D28D9); color: #fff; transform: translateY(-6px); }
.cd-card-mini--c { background: linear-gradient(160deg, #38BDF8, #0369A1); color: #fff; transform: rotate(10deg); }

.cd-header h1 {
    font-family: 'Syne', sans-serif; font-size: 2.4rem; font-weight: 800;
    color: var(--cd-accent-light); letter-spacing: 4px; margin: 0;
    text-shadow: 0 0 28px var(--cd-glow);
}
.subtitle { color: var(--cd-text-dim); margin-top: 8px; }

.card { background: var(--cd-surface); border-radius: 14px; padding: 20px; margin-bottom: 16px; border: 1px solid var(--cd-surface-light); }
.card__title {
    font-family: 'Syne', sans-serif; font-size: 0.85rem; text-transform: uppercase;
    letter-spacing: 2px; color: var(--cd-accent-light); margin-bottom: 14px;
}

.difficulty-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.diff-btn {
    background: var(--cd-surface-light); border: 1.5px solid transparent;
    color: var(--cd-text); padding: 14px 8px; border-radius: 10px; cursor: pointer;
    display: flex; flex-direction: column; align-items: center; gap: 4px;
    transition: all 0.15s ease; font-family: 'DM Sans', sans-serif; font-size: 0.85rem;
}
.diff-btn:hover { transform: translateY(-2px); border-color: var(--cd-accent); }
.diff-btn.selected {
    background: linear-gradient(135deg, var(--cd-accent-dark), var(--cd-accent));
    border-color: var(--cd-accent-light); box-shadow: 0 0 16px rgba(99,102,241,0.45);
}
.diff-icon { font-family: 'JetBrains Mono', monospace; font-size: 1rem; font-weight: 700; color: var(--cd-accent-light); }
.diff-btn.selected .diff-icon { color: #fff; }
.diff-desc { font-size: 0.7rem; color: var(--cd-text-dim); }
.diff-btn.selected .diff-desc { color: rgba(255,255,255,0.85); }

.cd-rules { margin: 0; padding-left: 1.1rem; color: var(--cd-text-dim); font-size: 0.92rem; line-height: 1.6; }
.cd-rules li + li { margin-top: 6px; }

.btn {
    font-family: 'DM Sans', sans-serif; font-weight: 600; border-radius: 10px;
    border: none; cursor: pointer; padding: 12px 22px;
    transition: transform 0.12s ease, box-shadow 0.12s ease; font-size: 0.95rem;
}
.btn:hover { transform: translateY(-1px); }
.btn--primary {
    background: linear-gradient(135deg, var(--cd-accent), var(--cd-accent-light));
    color: #fff; box-shadow: 0 6px 18px rgba(99,102,241,0.35);
}
.btn--primary:hover { box-shadow: 0 10px 24px rgba(99,102,241,0.5); }
.btn--outline { background: transparent; border: 1.5px solid var(--cd-accent); color: var(--cd-accent-light); }
.btn--outline:hover { background: rgba(99,102,241,0.12); }
.btn--ghost { background: transparent; color: var(--cd-text-dim); }
.btn--ghost:hover { color: var(--cd-accent-light); }
.btn--lg { padding: 16px 36px; font-size: 1.05rem; }
.btn--sm { padding: 8px 14px; font-size: 0.85rem; }
.menu-actions { display: flex; flex-direction: column; align-items: center; gap: 8px; margin-top: 18px; }

#game-hud {
    display: grid; grid-template-columns: repeat(7, 1fr); gap: 8px;
    background: var(--cd-surface); padding: 12px; border-radius: 12px;
    border: 1px solid var(--cd-surface-light); margin-bottom: 14px;
}
.hud__cell { display: flex; flex-direction: column; align-items: center; gap: 2px; }
.hud__label { font-size: 0.6rem; text-transform: uppercase; letter-spacing: 1px; color: var(--cd-text-dim); }
.hud__value { font-family: 'JetBrains Mono', monospace; font-size: 1.05rem; font-weight: 700; color: var(--cd-accent-light); }
.hud__hp { color: var(--cd-success); }
.hud__hp.low { color: var(--cd-danger); }
.hud__energy { color: var(--cd-energy); }

.cd-arena {
    background: linear-gradient(180deg, var(--cd-surface), var(--cd-bg));
    border-radius: 14px; padding: 20px; border: 1px solid var(--cd-surface-light); margin-bottom: 14px;
    min-height: 280px;
}
.cd-enemies { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-bottom: 18px; min-height: 180px; }
.cd-enemy {
    background: var(--cd-surface-light); border-radius: 12px; padding: 14px;
    border: 1.5px solid transparent; cursor: pointer; width: 160px;
    transition: all 0.15s ease; position: relative;
}
.cd-enemy:hover { transform: translateY(-3px); border-color: var(--cd-danger); box-shadow: 0 0 18px rgba(248,113,113,0.4); }
.cd-enemy.selected { border-color: var(--cd-danger); box-shadow: 0 0 22px rgba(248,113,113,0.6); }
.cd-enemy.dead { opacity: 0.3; pointer-events: none; }
.cd-enemy.boss { border-color: var(--cd-gold); background: linear-gradient(160deg, #4A1818, #2A0808); }
.cd-enemy-portrait { font-size: 2.4rem; text-align: center; margin-bottom: 6px; }
.cd-enemy-name { text-align: center; font-size: 0.85rem; color: var(--cd-accent-light); font-weight: 600; margin-bottom: 6px; }
.cd-bar { background: var(--cd-bg); height: 14px; border-radius: 7px; position: relative; overflow: hidden; margin-bottom: 6px; border: 1px solid var(--cd-surface-light); }
.cd-bar__fill { height: 100%; background: linear-gradient(90deg, #DC2626, #F87171); transition: width 0.3s ease; }
.cd-bar__fill--hp { background: linear-gradient(90deg, #059669, #34D399); }
.cd-bar__label {
    position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
    font-family: 'JetBrains Mono', monospace; font-size: 0.7rem; color: #fff; font-weight: 700; text-shadow: 0 0 4px #000;
}
.cd-intent {
    background: rgba(0,0,0,0.4); padding: 6px 8px; border-radius: 6px;
    font-size: 0.78rem; text-align: center; color: var(--cd-text); margin-top: 4px;
    font-family: 'JetBrains Mono', monospace; min-height: 26px;
}
.cd-intent .intent-atk { color: var(--cd-attack); font-weight: 700; }
.cd-intent .intent-def { color: var(--cd-defense); }
.cd-intent .intent-skill { color: var(--cd-skill); }
.cd-block-tag { color: var(--cd-defense); font-size: 0.7rem; margin-top: 2px; text-align: center; }

.cd-player-card { display: flex; gap: 14px; align-items: center; background: var(--cd-surface-light); padding: 12px; border-radius: 12px; }
.cd-player-portrait { font-size: 2.4rem; color: var(--cd-accent-light); width: 60px; text-align: center; }
.cd-player-info { flex: 1; }
.cd-player-name { font-weight: 700; margin-bottom: 6px; }
.cd-block { font-size: 0.85rem; color: var(--cd-defense); margin-top: 6px; }

.cd-hand {
    display: flex; gap: 8px; justify-content: center; padding: 12px;
    background: var(--cd-surface); border-radius: 14px; border: 1px solid var(--cd-surface-light);
    min-height: 180px; align-items: flex-end; flex-wrap: wrap;
}
.cd-card {
    width: 120px; height: 168px; background: linear-gradient(160deg, var(--cd-surface-light), var(--cd-bg));
    border: 1.5px solid var(--cd-accent); border-radius: 10px; padding: 10px;
    cursor: pointer; display: flex; flex-direction: column; gap: 6px;
    transition: transform 0.18s ease, box-shadow 0.18s ease;
    position: relative; box-shadow: 0 6px 14px rgba(0,0,0,0.4);
}
.cd-card:hover { transform: translateY(-12px) scale(1.04); box-shadow: 0 14px 26px rgba(99,102,241,0.4); }
.cd-card.attack { border-color: var(--cd-attack); background: linear-gradient(160deg, #2A0E0E, #100808); }
.cd-card.defense { border-color: var(--cd-defense); background: linear-gradient(160deg, #0A1E2A, #04101A); }
.cd-card.skill { border-color: var(--cd-skill); background: linear-gradient(160deg, #1A0E2A, #0A0418); }
.cd-card.unplayable { opacity: 0.5; cursor: not-allowed; }
.cd-card.unplayable:hover { transform: none; }
.cd-card__cost {
    position: absolute; top: -8px; left: -8px; width: 28px; height: 28px; border-radius: 50%;
    background: var(--cd-energy); color: #1A1100; font-weight: 700; display: flex;
    align-items: center; justify-content: center; font-family: 'JetBrains Mono', monospace;
    border: 2px solid var(--cd-bg);
}
.cd-card__name { font-weight: 700; font-size: 0.9rem; text-align: center; color: var(--cd-accent-light); }
.cd-card.attack .cd-card__name { color: #FCA5A5; }
.cd-card.defense .cd-card__name { color: #7DD3FC; }
.cd-card.skill .cd-card__name { color: #C4B5FD; }
.cd-card__icon { font-size: 1.8rem; text-align: center; margin: 4px 0; }
.cd-card__desc {
    font-size: 0.72rem; color: var(--cd-text); text-align: center; line-height: 1.4;
    flex: 1; display: flex; align-items: center; justify-content: center;
}

.cd-actions { display: flex; justify-content: center; gap: 12px; margin-top: 14px; flex-wrap: wrap; }

.reward-card {
    background: var(--cd-surface); border-radius: 16px; padding: 30px 24px;
    border: 1px solid var(--cd-surface-light); text-align: center;
    max-width: 600px; margin: 30px auto; box-shadow: 0 18px 36px rgba(0,0,0,0.4);
}
.reward-card h2 {
    font-family: 'Syne', sans-serif; color: var(--cd-accent-light);
    letter-spacing: 4px; margin: 0 0 6px; text-shadow: 0 0 24px var(--cd-glow);
}
.reward-card p { color: var(--cd-text-dim); margin-bottom: 18px; }
.reward-options { display: flex; gap: 14px; justify-content: center; margin-bottom: 18px; flex-wrap: wrap; }

.result-card, .lb-card {
    background: var(--cd-surface); border-radius: 16px; padding: 36px 28px;
    border: 1px solid var(--cd-surface-light); text-align: center;
    max-width: 480px; margin: 40px auto; box-shadow: 0 18px 36px rgba(0,0,0,0.4);
}
.result-card h2 {
    font-family: 'Syne', sans-serif; font-size: 2rem; color: var(--cd-accent-light);
    letter-spacing: 4px; margin: 0 0 12px; text-shadow: 0 0 24px var(--cd-glow);
}
.result-score { font-family: 'JetBrains Mono', monospace; font-size: 3rem; font-weight: 700; color: var(--cd-gold); margin: 8px 0; }
.result-detail { color: var(--cd-text-dim); font-size: 0.95rem; margin-bottom: 18px; line-height: 1.6; }
#nickname {
    width: 100%; padding: 12px 14px; border-radius: 10px; background: var(--cd-bg);
    color: var(--cd-text); border: 1.5px solid var(--cd-surface-light);
    font-family: 'DM Sans', sans-serif; font-size: 0.95rem; margin-bottom: 12px; box-sizing: border-box;
}
#nickname:focus { outline: none; border-color: var(--cd-accent); }
.result-actions { display: flex; gap: 10px; justify-content: center; margin-bottom: 10px; }

.lb-card h2 { font-family: 'Syne', sans-serif; color: var(--cd-accent-light); letter-spacing: 4px; margin-bottom: 18px; text-shadow: 0 0 24px var(--cd-glow); }
#leaderboard-list { list-style: none; padding: 0; margin: 0 0 16px; text-align: left; counter-reset: lb; }
#leaderboard-list li {
    counter-increment: lb; display: flex; justify-content: space-between; padding: 10px 14px;
    background: var(--cd-bg); margin-bottom: 6px; border-radius: 8px;
    border: 1px solid var(--cd-surface-light); font-family: 'DM Sans', sans-serif;
}
#leaderboard-list li::before { content: counter(lb); color: var(--cd-accent-light); font-weight: 700; margin-right: 10px; min-width: 24px; }
#leaderboard-list li:nth-child(1) { border-color: var(--cd-gold); }
#leaderboard-list li:nth-child(1)::before { color: var(--cd-gold); }
#leaderboard-list .lb-score { font-family: 'JetBrains Mono', monospace; color: var(--cd-accent-light); font-weight: 600; }

@keyframes cdDmg { 0% { transform: translateX(0); } 25% { transform: translateX(-6px); } 75% { transform: translateX(6px); } 100% { transform: translateX(0); } }
.cd-enemy.hit, .cd-player-card.hit { animation: cdDmg 0.3s ease; }

@media (max-width: 900px) {
    .cd-layout { flex-direction: column; padding: 12px; }
    .ad-slot { width: 100%; }
    .ad-placeholder--vertical { width: 100%; height: 90px; }
    #game-hud { grid-template-columns: repeat(4, 1fr); }
    .difficulty-grid { grid-template-columns: repeat(3, 1fr); }
    .cd-header h1 { font-size: 2rem; letter-spacing: 2px; }
    .cd-enemy { width: 130px; }
    .cd-card { width: 96px; height: 140px; font-size: 0.85rem; }
    .cd-card__icon { font-size: 1.4rem; }
}