/* ==========================================================================
   DAILY SNAKE (2026-08-21) - 折纸神裁：和纸灵蛇与维度折叠
   Washi Origami & Spatial Folding Aesthetic Styling
   ========================================================================== */

:root {
    --bg-dark: #161513;
    --bg-card: rgba(30, 27, 24, 0.85);
    --bg-hud: rgba(26, 23, 20, 0.92);

    --washi-cream: #f7f3e8;
    --washi-paper-shadow: rgba(0, 0, 0, 0.25);
    --crease-gold: #e0a96d;

    --pink-sakura: #ff6b8b;
    --pink-glow: rgba(255, 107, 139, 0.35);

    --cyan-asagi: #2ec4b6;
    --cyan-glow: rgba(46, 196, 182, 0.35);

    --gold-amber: #ffb703;
    --gold-glow: rgba(255, 183, 3, 0.4);

    --purple-shion: #845ec2;
    --purple-glow: rgba(132, 94, 194, 0.35);

    --danger-red: #e63946;

    --text-light: #f7f3e8;
    --text-muted: #b8af9f;

    --font-heading: 'Outfit', 'Noto Sans SC', sans-serif;
    --font-body: 'Plus Jakarta Sans', '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;
}

/* Washi Background Atmosphere */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background:
        radial-gradient(circle at 15% 15%, rgba(255, 107, 139, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 85% 85%, rgba(46, 196, 182, 0.08) 0%, transparent 45%),
        radial-gradient(circle at 50% 50%, rgba(26, 23, 20, 0.95) 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 18px;
    background: var(--bg-hud);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(224, 169, 109, 0.25);
    border-radius: var(--radius-md);
    margin-bottom: 12px;
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.4);
}

.brand {
    display: flex;
    align-items: center;
    gap: 14px;
}

.back-link {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    padding: 6px 12px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
}

.back-link:hover {
    color: var(--washi-cream);
    background: rgba(224, 169, 109, 0.2);
    border-color: var(--crease-gold);
}

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

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

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

.game-title {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--washi-cream);
    background: linear-gradient(135deg, #f7f3e8 0%, #e0a96d 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.top-actions {
    display: flex;
    gap: 8px;
}

.icon-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(224, 169, 109, 0.2);
    border-radius: var(--radius-sm);
    color: var(--text-light);
    cursor: pointer;
    transition: all 0.2s ease;
}

.icon-btn:hover {
    background: rgba(224, 169, 109, 0.25);
    border-color: var(--crease-gold);
    transform: translateY(-2px);
}

.hidden {
    display: none !important;
}

/* Main 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-card);
    border: 1px solid rgba(224, 169, 109, 0.2);
    border-radius: var(--radius-sm);
    padding: 8px 14px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}

.hud-label {
    font-size: 0.68rem;
    color: var(--text-muted);
    font-weight: 700;
    letter-spacing: 0.8px;
    margin-bottom: 2px;
}

.hud-value {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--washi-cream);
}

.combo-text {
    color: var(--pink-sakura);
    text-shadow: 0 0 10px var(--pink-glow);
}

.energy-hud-card {
    grid-column: span 1;
}

.hud-label-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 4px;
}

.hud-value-small {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--gold-amber);
}

.energy-bar-bg {
    width: 100%;
    height: 10px;
    background: rgba(0, 0, 0, 0.4);
    border-radius: 5px;
    overflow: hidden;
    position: relative;
    border: 1px solid rgba(255, 183, 3, 0.3);
}

.energy-bar-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--gold-amber) 0%, var(--pink-sakura) 100%);
    border-radius: 5px;
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 0 10px var(--gold-glow);
}

.form-hud-card {
    align-items: center;
    justify-content: center;
}

.form-badge {
    background: linear-gradient(135deg, rgba(224, 169, 109, 0.2) 0%, rgba(255, 107, 139, 0.2) 100%);
    border: 1px solid var(--crease-gold);
    padding: 3px 10px;
    border-radius: 12px;
    color: var(--washi-cream);
    font-size: 0.85rem;
}

/* Canvas Wrapper */
.canvas-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 3 / 2;
    max-height: 65vh;
    background: #f4eee1;
    border-radius: var(--radius-md);
    border: 2px solid rgba(224, 169, 109, 0.4);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5), inset 0 0 40px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

#game-canvas {
    width: 100%;
    height: 100%;
    display: block;
}

.overlay-effect {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 5;
}

/* Modal Overlay Styling */
.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(18, 16, 14, 0.88);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    padding: 20px;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: scale(0.98); }
    to { opacity: 1; transform: scale(1); }
}

.modal-card {
    background: var(--bg-card);
    border: 1.5px solid var(--crease-gold);
    border-radius: var(--radius-lg);
    padding: 24px 30px;
    max-width: 540px;
    width: 100%;
    text-align: center;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.6);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
}

.theme-badge {
    background: rgba(224, 169, 109, 0.2);
    border: 1px solid var(--crease-gold);
    color: var(--gold-amber);
    font-size: 0.78rem;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 20px;
    text-transform: uppercase;
}

.modal-title {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--washi-cream);
}

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

.mechanics-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    width: 100%;
    margin: 6px 0;
}

.mech-item {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(224, 169, 109, 0.15);
    border-radius: var(--radius-sm);
    padding: 10px 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.mech-icon {
    font-size: 1.5rem;
}

.mech-info h4 {
    font-size: 0.8rem;
    color: var(--washi-cream);
    margin-bottom: 2px;
}

.mech-info p {
    font-size: 0.7rem;
    color: var(--text-muted);
    line-height: 1.2;
}

/* Buttons */
.btn {
    padding: 10px 24px;
    border-radius: var(--radius-md);
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    border: none;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-primary {
    background: linear-gradient(135deg, var(--gold-amber) 0%, #e09f3e 100%);
    color: #1a1510;
    box-shadow: 0 4px 16px var(--gold-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 183, 3, 0.6);
}

.btn-large {
    padding: 12px 36px;
    font-size: 1.15rem;
}

/* Game Over Summary */
.score-summary {
    display: flex;
    justify-content: space-around;
    width: 100%;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(224, 169, 109, 0.2);
    border-radius: var(--radius-sm);
    padding: 12px;
}

.summary-item {
    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: 1.3rem;
    color: var(--gold-amber);
}

/* Mobile Controls */
.mobile-controls {
    display: none;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
}

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

.dpad-btn {
    position: absolute;
    width: 42px;
    height: 42px;
    background: rgba(30, 27, 24, 0.9);
    border: 1.5px solid var(--crease-gold);
    color: var(--washi-cream);
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    cursor: pointer;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

.dpad-btn:active {
    background: var(--gold-amber);
    color: #1a1510;
}

.dpad-up { top: 0; left: 44px; }
.dpad-left { top: 44px; left: 0; }
.dpad-right { top: 44px; left: 88px; }
.dpad-down { top: 88px; left: 44px; }

.dpad-center {
    position: absolute;
    top: 44px;
    left: 44px;
    width: 42px;
    height: 42px;
    background: rgba(224, 169, 109, 0.15);
    border-radius: 8px;
    pointer-events: none;
}

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

.action-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 65px;
    height: 65px;
    border-radius: 50%;
    border: 2px solid var(--gold-amber);
    background: rgba(30, 27, 24, 0.9);
    color: var(--washi-cream);
    cursor: pointer;
    box-shadow: 0 4px 14px rgba(0,0,0,0.4);
    transition: transform 0.1s;
}

.action-btn:active {
    transform: scale(0.92);
    background: var(--gold-amber);
    color: #1a1510;
}

.btn-icon {
    font-size: 1.3rem;
}

.btn-label {
    font-size: 0.65rem;
    font-weight: 700;
}

/* Instructions Card */
.instructions-card {
    background: var(--bg-card);
    border: 1px solid rgba(224, 169, 109, 0.2);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    margin-top: 4px;
}

.instructions-card h3 {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    color: var(--washi-cream);
    margin-bottom: 12px;
}

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

.inst-col h4 {
    font-size: 0.88rem;
    color: var(--gold-amber);
    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 li strong {
    color: var(--washi-cream);
}

/* Footer */
.game-footer {
    text-align: center;
    padding: 16px 0 8px 0;
    font-size: 0.78rem;
    color: var(--text-muted);
}

/* Mobile Responsiveness Media Queries */
@media (max-width: 768px) {
    .app-container {
        padding: 8px;
    }

    .hud-bar {
        grid-template-columns: repeat(3, 1fr);
    }

    .energy-hud-card {
        grid-column: span 2;
    }

    .form-hud-card {
        grid-column: span 1;
    }

    .mobile-controls {
        display: flex;
    }

    .instructions-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .mechanics-grid {
        grid-template-columns: 1fr;
    }
}