/* ==========================================================================
   DAILY SNAKE (2026-08-22) - 琉璃圣殿：彩绘光蛇与光斑折射
   Gothic Stained Glass & Prism Refraction Aesthetic Styling
   ========================================================================== */

:root {
    --bg-dark: #0a090e;
    --bg-card: rgba(18, 14, 26, 0.88);
    --bg-hud: rgba(15, 12, 22, 0.94);

    --gold-lead: #dfac40;
    --gold-glow: rgba(223, 172, 64, 0.4);

    --ruby-red: #ff2a5f;
    --ruby-glow: rgba(255, 42, 95, 0.4);

    --emerald-green: #00e676;
    --emerald-glow: rgba(0, 230, 118, 0.4);

    --sapphire-blue: #00b0ff;
    --sapphire-glow: rgba(0, 176, 255, 0.4);

    --amethyst-purple: #d500f9;
    --amethyst-glow: rgba(213, 0, 249, 0.4);

    --text-light: #f7f3f9;
    --text-muted: #a69bb3;

    --font-heading: 'Cinzel', 'Outfit', 'Noto Sans SC', serif;
    --font-body: 'Outfit', 'Noto Sans SC', sans-serif;

    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
}

/* Reset & Box Sizing */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
}

html, body {
    width: 100%;
    height: 100%;
    overflow-x: hidden;
    background-color: var(--bg-dark);
    color: var(--text-light);
    font-family: var(--font-body);
    touch-action: manipulation;
}

/* Gothic Stained Glass Cathedral Background Atmosphere */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background:
        radial-gradient(circle at 20% 20%, rgba(255, 42, 95, 0.12) 0%, transparent 45%),
        radial-gradient(circle at 80% 80%, rgba(0, 176, 255, 0.12) 0%, transparent 45%),
        radial-gradient(circle at 50% 50%, rgba(213, 0, 249, 0.08) 0%, var(--bg-dark) 100%);
    z-index: -1;
    pointer-events: none;
}

/* App Container */
.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    max-width: 1200px;
    margin: 0 auto;
    padding: 12px 16px;
}

/* Top Bar Header */
.top-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 20px;
    background: var(--bg-hud);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid rgba(223, 172, 64, 0.35);
    border-radius: var(--radius-md);
    margin-bottom: 12px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.6);
}

.brand {
    display: flex;
    align-items: center;
    gap: 16px;
}

.back-link {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--gold-lead);
    text-decoration: none;
    font-weight: 700;
    font-size: 0.95rem;
    padding: 6px 12px;
    background: rgba(223, 172, 64, 0.1);
    border: 1px solid rgba(223, 172, 64, 0.3);
    border-radius: var(--radius-sm);
    transition: all 0.25s ease;
}

.back-link:hover {
    background: rgba(223, 172, 64, 0.25);
    transform: translateX(-2px);
}

.back-link .icon {
    width: 18px;
    height: 18px;
}

.title-group {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.game-tag {
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--ruby-red);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.game-title {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--text-light);
    letter-spacing: 0.5px;
    background: linear-gradient(135deg, #ffffff 0%, var(--gold-lead) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.top-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.icon-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(223, 172, 64, 0.3);
    color: var(--text-light);
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

.icon-btn:hover {
    background: rgba(223, 172, 64, 0.2);
    border-color: var(--gold-lead);
}

.icon-btn .icon {
    width: 20px;
    height: 20px;
}

.hidden {
    display: none !important;
}

/* Workspace */
.game-workspace {
    display: flex;
    flex-direction: column;
    gap: 12px;
    flex: 1;
}

/* HUD Stats Bar */
.hud-bar {
    display: grid;
    grid-template-columns: repeat(3, 1fr) 2fr 1fr;
    gap: 10px;
}

.hud-card {
    background: var(--bg-hud);
    border: 1px solid rgba(223, 172, 64, 0.2);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.hud-label {
    font-size: 0.68rem;
    font-weight: 700;
    color: var(--text-muted);
    letter-spacing: 0.5px;
}

.hud-value {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--gold-lead);
}

.hud-value-small {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-light);
}

.combo-text {
    color: var(--ruby-red);
}

.energy-hud-card {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.hud-label-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.energy-bar-bg {
    width: 100%;
    height: 10px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 6px;
    overflow: hidden;
    position: relative;
    border: 1px solid rgba(223, 172, 64, 0.3);
}

.energy-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--sapphire-blue), var(--ruby-red), var(--gold-lead));
    transition: width 0.2s ease;
}

.prism-badge {
    color: var(--sapphire-blue);
    font-weight: 800;
}

/* Canvas Wrapper */
.canvas-wrapper {
    position: relative;
    width: 100%;
    background: #08060c;
    border: 2px solid var(--gold-lead);
    border-radius: var(--radius-md);
    box-shadow: 0 0 30px rgba(223, 172, 64, 0.25), inset 0 0 40px rgba(0, 0, 0, 0.8);
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
}

#game-canvas {
    display: block;
    max-width: 100%;
    height: auto;
    aspect-ratio: 900 / 600;
}

/* Modal Overlays */
.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 9, 14, 0.88);
    backdrop-filter: blur(10px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
    padding: 20px;
}

.modal-card {
    background: var(--bg-card);
    border: 2px solid var(--gold-lead);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.8), 0 0 25px rgba(223, 172, 64, 0.3);
    border-radius: var(--radius-lg);
    padding: 28px 36px;
    max-width: 580px;
    width: 100%;
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.theme-badge {
    display: inline-block;
    align-self: center;
    padding: 4px 14px;
    background: rgba(223, 172, 64, 0.15);
    border: 1px solid var(--gold-lead);
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--gold-lead);
}

.modal-title {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    font-weight: 900;
    color: var(--text-light);
}

.modal-desc {
    font-size: 0.92rem;
    color: var(--text-muted);
    line-height: 1.5;
}

.mechanics-grid {
    display: flex;
    flex-direction: column;
    gap: 10px;
    text-align: left;
    margin: 6px 0;
}

.mech-item {
    display: flex;
    align-items: center;
    gap: 14px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(223, 172, 64, 0.2);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
}

.mech-icon {
    font-size: 1.6rem;
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.05);
}

.mech-info h4 {
    font-size: 0.95rem;
    color: var(--gold-lead);
    margin-bottom: 2px;
}

.mech-info p {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Buttons */
.btn {
    padding: 10px 24px;
    border-radius: var(--radius-sm);
    font-weight: 800;
    font-size: 0.95rem;
    cursor: pointer;
    border: none;
    transition: all 0.25s ease;
}

.btn-primary {
    background: linear-gradient(135deg, var(--gold-lead) 0%, #b8860b 100%);
    color: #0a090e;
    box-shadow: 0 4px 16px rgba(223, 172, 64, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(223, 172, 64, 0.6);
}

.btn-large {
    padding: 14px 36px;
    font-size: 1.1rem;
    letter-spacing: 0.5px;
}

/* Summary Grid */
.score-summary {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin: 12px 0;
}

.summary-item {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(223, 172, 64, 0.25);
    border-radius: var(--radius-sm);
    padding: 10px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.summary-item span {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.summary-item strong {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    color: var(--gold-lead);
}

/* Mobile Controls */
.mobile-controls {
    display: none;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: var(--bg-hud);
    border: 1px solid rgba(223, 172, 64, 0.25);
    border-radius: var(--radius-md);
    margin-top: 6px;
}

.dpad-container {
    position: relative;
    width: 130px;
    height: 130px;
}

.dpad-btn {
    position: absolute;
    width: 42px;
    height: 42px;
    background: rgba(223, 172, 64, 0.15);
    border: 1px solid var(--gold-lead);
    color: var(--gold-lead);
    border-radius: var(--radius-sm);
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    touch-action: manipulation;
}

.dpad-btn:active {
    background: var(--gold-lead);
    color: #0a090e;
}

.dpad-up { top: 0; left: 44px; }
.dpad-down { bottom: 0; left: 44px; }
.dpad-left { top: 44px; left: 0; }
.dpad-right { top: 44px; right: 0; }
.dpad-center { position: absolute; top: 44px; left: 44px; width: 42px; height: 42px; background: rgba(0,0,0,0.3); border-radius: var(--radius-sm); }

.mobile-actions {
    display: flex;
    gap: 12px;
}

.action-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background: rgba(223, 172, 64, 0.2);
    border: 2px solid var(--gold-lead);
    border-radius: 50%;
    color: var(--text-light);
    cursor: pointer;
    touch-action: manipulation;
}

.action-btn:active {
    transform: scale(0.95);
    background: var(--gold-lead);
    color: #0a090e;
}

.btn-icon { font-size: 1.4rem; }
.btn-label { font-size: 0.7rem; font-weight: 800; margin-top: 2px; }

/* Instructions Card */
.instructions-card {
    background: var(--bg-card);
    border: 1px solid rgba(223, 172, 64, 0.25);
    border-radius: var(--radius-md);
    padding: 18px 24px;
    margin-top: 6px;
}

.instructions-card h3 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    color: var(--gold-lead);
    margin-bottom: 12px;
}

.instructions-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.inst-col h4 {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 8px;
}

.inst-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.inst-col li {
    font-size: 0.82rem;
    color: var(--text-muted);
    line-height: 1.4;
}

.inst-col strong {
    color: var(--gold-lead);
}

.game-footer {
    text-align: center;
    padding: 16px;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: auto;
}

/* Responsive Media Queries */
@media (max-width: 768px) {
    .hud-bar {
        grid-template-columns: repeat(2, 1fr);
    }
    .energy-hud-card {
        grid-column: span 2;
    }
    .prism-hud-card {
        grid-column: span 2;
    }
    .mobile-controls {
        display: flex;
    }
    .instructions-grid {
        grid-template-columns: 1fr;
    }
    .top-bar {
        padding: 8px 12px;
    }
    .game-title {
        font-size: 1rem;
    }
}