/* ===========================================
   Grand Underground Mining Game - Styles
   =========================================== */

/* CSS Variables */
:root {
    /* Colors */
    --bg-dark: #0d1117;
    --bg-cave: #1a1f2e;
    --bg-panel: #252b3b;
    --bg-card: #2d3548;

    --accent-primary: #7c3aed;
    --accent-secondary: #06b6d4;
    --accent-gold: #f59e0b;
    --accent-danger: #ef4444;
    --accent-success: #10b981;

    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    /* Dust colors */
    --dust-0: transparent;
    --dust-2: #8b7355;
    --dust-4: #6b5344;
    --dust-6: #4a3728;

    /* Item colors */
    --item-fossil: #d4a574;
    --item-sphere: #e2e8f0;
    --item-shard-red: #ef4444;
    --item-shard-blue: #3b82f6;
    --item-shard-green: #22c55e;
    --item-shard-yellow: #eab308;
    --item-statue: #60a5fa;
    --item-statue-shiny: #fbbf24;

    /* Spacing */
    --cell-size: 40px;
    --gap-sm: 0.5rem;
    --gap-md: 1rem;
    --gap-lg: 1.5rem;
    --gap-xl: 2rem;

    /* Borders & Shadows */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(124, 58, 237, 0.3);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 400ms ease;
}

/* Reset & Base */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Outfit', sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
}

/* App Container */
.app-container {
    min-height: 100vh;
    background:
        radial-gradient(ellipse at top, rgba(124, 58, 237, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at bottom, rgba(6, 182, 212, 0.1) 0%, transparent 50%),
        var(--bg-dark);
}

/* Header */
.game-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--gap-md) var(--gap-xl);
    background: rgba(37, 43, 59, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--gap-md);
}

.logo .icon {
    font-size: 1.8rem;
}

.logo h1 {
    font-family: 'Outfit', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--gap-sm);
    padding: 0.75rem 1.5rem;
    font-family: 'Outfit', sans-serif;
    font-size: 0.95rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary), #9333ea);
    color: white;
    box-shadow: var(--shadow-sm), 0 0 20px rgba(124, 58, 237, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md), 0 0 30px rgba(124, 58, 237, 0.5);
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-secondary:hover {
    background: var(--bg-panel);
    border-color: var(--accent-primary);
}

.btn-danger {
    background: linear-gradient(135deg, var(--accent-danger), #dc2626);
    color: white;
}

.btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md), 0 0 20px rgba(239, 68, 68, 0.4);
}

.btn-hint {
    background: linear-gradient(135deg, var(--accent-secondary), #0891b2);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-hint:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md), 0 0 20px rgba(6, 182, 212, 0.4);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* Screens */
.screen {
    display: none;
    padding: var(--gap-xl);
    animation: fadeIn 0.3s ease;
}

.screen.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Mode Selection */
.mode-container {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
    padding-top: var(--gap-xl);
}

.mode-container h2 {
    font-size: 2rem;
    margin-bottom: var(--gap-xl);
    color: var(--text-primary);
}

.mode-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--gap-xl);
}

.mode-card {
    background: var(--bg-panel);
    border-radius: var(--radius-lg);
    padding: var(--gap-xl);
    border: 2px solid transparent;
    transition: all var(--transition-normal);
    cursor: pointer;
}

.mode-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.mode-icon {
    font-size: 3.5rem;
    margin-bottom: var(--gap-md);
}

.mode-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--gap-sm);
    color: var(--text-primary);
}

.mode-card p {
    color: var(--text-secondary);
    margin-bottom: var(--gap-md);
    line-height: 1.6;
}

.mode-features {
    list-style: none;
    text-align: left;
    margin-bottom: var(--gap-lg);
}

.mode-features li {
    padding: var(--gap-sm) 0;
    color: var(--text-secondary);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.mode-features li:last-child {
    border-bottom: none;
}

.btn-mode {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, var(--accent-primary), #9333ea);
    color: white;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.btn-mode:hover {
    box-shadow: 0 0 30px rgba(124, 58, 237, 0.5);
}

/* Game Layout */
.game-layout {
    max-width: 1400px;
    margin: 0 auto;
}

.game-layout.single {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: var(--gap-xl);
}

.game-layout.dual {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--gap-xl);
}

/* Game Panel */
.game-panel {
    background: var(--bg-panel);
    border-radius: var(--radius-lg);
    padding: var(--gap-lg);
    box-shadow: var(--shadow-md);
}

.panel-header {
    margin-bottom: var(--gap-lg);
}

.panel-header h2 {
    font-size: 1.25rem;
    margin-bottom: var(--gap-md);
    color: var(--text-primary);
}

/* Stats Bar */
.stats-bar {
    display: flex;
    gap: var(--gap-xl);
    align-items: center;
}

.stat {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stat-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-gold);
}

.energy-stat {
    flex: 1;
    max-width: 200px;
}

.energy-bar {
    position: relative;
    height: 24px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.energy-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-success), #34d399);
    transition: width var(--transition-normal);
    border-radius: var(--radius-sm);
}

.energy-fill.low {
    background: linear-gradient(90deg, var(--accent-danger), #f87171);
}

.energy-fill.medium {
    background: linear-gradient(90deg, var(--accent-gold), #fbbf24);
}

.energy-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 0.8rem;
    font-weight: 600;
    color: white;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

/* Mining Board */
.board-container {
    position: relative;
    margin-bottom: var(--gap-lg);
}

.mining-board {
    display: grid;
    gap: 2px;
    background: #1a1a2e;
    padding: 8px;
    border-radius: var(--radius-md);
    box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.5);
}

.cell {
    width: var(--cell-size);
    height: var(--cell-size);
    border-radius: 4px;
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.cell:hover {
    transform: scale(1.05);
    z-index: 10;
}

.cell.dust-0 {
    background: #2a2a3e;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.3);
}

/* Dust Level 1 - Soft Soil with Cracks (almost cleared) */
.cell.dust-1 {
    background:
        linear-gradient(145deg, #c9b896, #b8a785);
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.15);
    position: relative;
}

.cell.dust-1::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        linear-gradient(35deg, transparent 40%, rgba(0, 0, 0, 0.15) 41%, rgba(0, 0, 0, 0.15) 42%, transparent 43%),
        linear-gradient(125deg, transparent 55%, rgba(0, 0, 0, 0.12) 56%, rgba(0, 0, 0, 0.12) 57%, transparent 58%);
    border-radius: 4px;
}

/* Dust Level 2 - Soft Soil (no cracks) */
.cell.dust-2 {
    background: linear-gradient(145deg, #b8a785, #a79674);
    box-shadow: inset 0 2px 3px rgba(0, 0, 0, 0.2);
}

/* Dust Level 3 - Hard/Dry Soil with Cracks */
.cell.dust-3 {
    background:
        linear-gradient(145deg, #8b7355, #7a6448);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.25);
    position: relative;
}

.cell.dust-3::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        linear-gradient(45deg, transparent 30%, rgba(0, 0, 0, 0.2) 31%, rgba(0, 0, 0, 0.2) 33%, transparent 34%),
        linear-gradient(135deg, transparent 60%, rgba(0, 0, 0, 0.18) 61%, rgba(0, 0, 0, 0.18) 63%, transparent 64%),
        linear-gradient(85deg, transparent 45%, rgba(0, 0, 0, 0.15) 46%, rgba(0, 0, 0, 0.15) 47%, transparent 48%);
    border-radius: 4px;
}

/* Dust Level 4 - Hard/Dry Soil (no cracks) */
.cell.dust-4 {
    background: linear-gradient(145deg, #6b5344, #5a4538);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.3);
}

/* Dust Level 5 - Rock with Cracks (deep) */
.cell.dust-5 {
    background:
        linear-gradient(145deg, #5a4a3c, #4d3f32);
    box-shadow: inset 0 3px 5px rgba(0, 0, 0, 0.35);
    position: relative;
}

.cell.dust-5::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        linear-gradient(25deg, transparent 20%, rgba(0, 0, 0, 0.25) 21%, rgba(0, 0, 0, 0.25) 24%, transparent 25%),
        linear-gradient(160deg, transparent 35%, rgba(0, 0, 0, 0.22) 36%, rgba(0, 0, 0, 0.22) 39%, transparent 40%),
        linear-gradient(70deg, transparent 50%, rgba(0, 0, 0, 0.2) 51%, rgba(0, 0, 0, 0.2) 53%, transparent 54%),
        linear-gradient(110deg, transparent 15%, rgba(0, 0, 0, 0.18) 16%, rgba(0, 0, 0, 0.18) 18%, transparent 19%);
    border-radius: 4px;
}

/* Dust Level 6 - Rock (no cracks, deepest) */
.cell.dust-6 {
    background:
        repeating-linear-gradient(145deg,
            #4a3728 0px,
            #3d2d20 3px,
            #4a3728 4px);
    box-shadow: inset 0 3px 6px rgba(0, 0, 0, 0.45);
}

.cell.has-item {
    animation: itemReveal 0.5s ease;
}

@keyframes itemReveal {
    0% {
        transform: scale(0.8);
        opacity: 0;
    }

    50% {
        transform: scale(1.1);
    }

    100% {
        transform: scale(1);
        opacity: 1;
    }
}

.cell .item-indicator {
    position: absolute;
    inset: 4px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: 700;
    color: white;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

/* Item colors */
.item-fossil {
    background: linear-gradient(135deg, #d4a574, #c4956a);
}

.item-sphere {
    background: linear-gradient(135deg, #e2e8f0, #cbd5e1);
    color: #334155;
}

.item-shard-red {
    background: linear-gradient(135deg, #ef4444, #dc2626);
}

.item-shard-blue {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
}

.item-shard-green {
    background: linear-gradient(135deg, #22c55e, #16a34a);
}

.item-shard-yellow {
    background: linear-gradient(135deg, #eab308, #ca8a04);
}

.item-statue {
    background: linear-gradient(135deg, #60a5fa, #3b82f6);
}

.item-statue-shiny {
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
}

.item-special {
    background: linear-gradient(135deg, #a855f7, #9333ea);
}

/* Hint Overlay */
.hint-overlay {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.hint-marker {
    position: absolute;
    width: var(--cell-size);
    height: var(--cell-size);
    border: 3px solid var(--accent-secondary);
    border-radius: 6px;
    background: rgba(6, 182, 212, 0.2);
    animation: hintPulse 1.5s infinite;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

@keyframes hintPulse {

    0%,
    100% {
        box-shadow: 0 0 0 0 rgba(6, 182, 212, 0.4);
    }

    50% {
        box-shadow: 0 0 20px 5px rgba(6, 182, 212, 0.2);
    }
}

/* Action Overlay (for AI moves) */
.action-overlay {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.ai-action-marker {
    position: absolute;
    width: var(--cell-size);
    height: var(--cell-size);
    border: 3px solid var(--accent-gold);
    border-radius: 6px;
    background: rgba(245, 158, 11, 0.3);
    animation: actionFlash 0.5s ease;
}

@keyframes actionFlash {
    0% {
        transform: scale(1.3);
        opacity: 0;
    }

    50% {
        transform: scale(1.1);
        opacity: 1;
    }

    100% {
        transform: scale(1);
        opacity: 0;
    }
}

/* Controls Bar */
.controls-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--gap-md);
}

.tool-selector {
    display: flex;
    gap: var(--gap-sm);
}

.tool-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: var(--gap-md);
    background: var(--bg-card);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    min-width: 90px;
}

.tool-btn:hover {
    background: var(--bg-cave);
}

.tool-btn.active {
    border-color: var(--accent-primary);
    background: rgba(124, 58, 237, 0.2);
    box-shadow: 0 0 15px rgba(124, 58, 237, 0.3);
}

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

.tool-name {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
}

.tool-cost {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* AI Controls in Compete Mode */
.ai-controls {
    flex-direction: column;
    gap: var(--gap-md);
}

.ai-status {
    display: flex;
    align-items: center;
    gap: var(--gap-sm);
    padding: var(--gap-sm) var(--gap-md);
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.status-icon {
    animation: spin 2s linear infinite;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

.ai-status.done .status-icon {
    animation: none;
}

/* Side Panel */
.side-panel {
    background: var(--bg-panel);
    border-radius: var(--radius-lg);
    padding: var(--gap-lg);
    box-shadow: var(--shadow-md);
}

.side-panel h3 {
    font-size: 1rem;
    margin-bottom: var(--gap-md);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Items List */
.items-list {
    display: flex;
    flex-direction: column;
    gap: var(--gap-sm);
}

.items-list.horizontal {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
}

.item-card {
    display: flex;
    align-items: center;
    gap: var(--gap-md);
    padding: var(--gap-md);
    background: var(--bg-card);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
}

.item-card.retrieved {
    opacity: 0.5;
    background: rgba(16, 185, 129, 0.2);
}

.item-card.retrieved::after {
    content: '✓';
    margin-left: auto;
    color: var(--accent-success);
    font-weight: bold;
}

.item-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.item-info {
    flex: 1;
}

.item-name {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
}

.item-value {
    font-size: 0.75rem;
    color: var(--accent-gold);
}

/* Compete Items Panel */
.compete-items-panel {
    margin-top: var(--gap-xl);
    background: var(--bg-panel);
    border-radius: var(--radius-lg);
    padding: var(--gap-lg);
    text-align: center;
}

.compete-items-panel h3 {
    font-size: 1rem;
    margin-bottom: var(--gap-md);
    color: var(--text-secondary);
}

/* Modal */
.modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeIn 0.2s ease;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-panel);
    border-radius: var(--radius-lg);
    max-width: 450px;
    width: 90%;
    padding: var(--gap-xl);
    box-shadow: var(--shadow-lg);
    animation: modalSlide 0.3s ease;
}

.modal-content.warning {
    border: 2px solid var(--accent-danger);
}

@keyframes modalSlide {
    from {
        transform: translateY(-20px);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    text-align: center;
    margin-bottom: var(--gap-lg);
}

.modal-header h2 {
    font-size: 1.5rem;
    color: var(--text-primary);
}

.modal-body {
    text-align: center;
    margin-bottom: var(--gap-xl);
}

.modal-body p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--gap-md);
}

.warning-text {
    color: var(--accent-danger) !important;
    font-weight: 600;
}

/* Result displays */
.result-single {
    text-align: center;
}

.final-score {
    display: flex;
    flex-direction: column;
    gap: var(--gap-sm);
    margin-bottom: var(--gap-lg);
}

.score-label {
    font-size: 0.9rem;
    color: var(--text-muted);
    text-transform: uppercase;
}

.score-value {
    font-size: 3rem;
    font-weight: 700;
    color: var(--accent-gold);
}

.items-retrieved {
    color: var(--text-secondary);
}

.result-compete {
    text-align: center;
}

.compete-scores {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--gap-xl);
    margin-bottom: var(--gap-lg);
}

.compete-score {
    text-align: center;
}

.result-label {
    display: block;
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: var(--gap-sm);
}

.result-value {
    font-size: 2.5rem;
    font-weight: 700;
}

.player-result .result-value {
    color: var(--accent-primary);
}

.ai-result .result-value {
    color: var(--accent-secondary);
}

.vs {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-muted);
}

.winner-announcement {
    font-size: 1.5rem;
    font-weight: 700;
    padding: var(--gap-md);
    border-radius: var(--radius-md);
}

.winner-announcement.win {
    background: rgba(16, 185, 129, 0.2);
    color: var(--accent-success);
}

.winner-announcement.lose {
    background: rgba(239, 68, 68, 0.2);
    color: var(--accent-danger);
}

.winner-announcement.tie {
    background: rgba(245, 158, 11, 0.2);
    color: var(--accent-gold);
}

.modal-footer {
    display: flex;
    gap: var(--gap-md);
    justify-content: center;
}

.hidden {
    display: none !important;
}

/* Responsive */
@media (max-width: 1200px) {
    .game-layout.dual {
        grid-template-columns: 1fr;
    }

    :root {
        --cell-size: 35px;
    }
}

@media (max-width: 768px) {
    .game-layout.single {
        grid-template-columns: 1fr;
    }

    :root {
        --cell-size: 30px;
    }

    .controls-bar {
        flex-direction: column;
    }

    .stats-bar {
        flex-direction: column;
        align-items: flex-start;
    }

    .energy-stat {
        width: 100%;
        max-width: none;
    }

    .project-hero {
        flex-direction: column;
        text-align: center;
    }

    .hero-thumbnail {
        width: 120px;
        height: 120px;
    }

    .github-link {
        justify-content: center;
    }
}

/* ===========================================
   Project Hero Section
   =========================================== */

.project-hero {
    display: flex;
    align-items: center;
    gap: var(--gap-xl);
    padding: var(--gap-xl);
    margin-bottom: var(--gap-xl);
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.1), rgba(6, 182, 212, 0.1));
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.hero-thumbnail {
    width: 150px;
    height: 150px;
    border-radius: var(--radius-lg);
    object-fit: cover;
    box-shadow: var(--shadow-lg);
    border: 3px solid rgba(255, 255, 255, 0.1);
    flex-shrink: 0;
}

.hero-content {
    flex: 1;
    text-align: left;
}

.hero-content h2 {
    font-size: 1.75rem;
    margin-bottom: var(--gap-md);
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--gap-lg);
    font-size: 1rem;
}

.hero-description strong {
    color: var(--accent-secondary);
    font-weight: 600;
}

.github-link {
    display: inline-flex;
    align-items: center;
    gap: var(--gap-sm);
    padding: 0.75rem 1.25rem;
    background: #24292e;
    color: white;
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.github-link:hover {
    background: #374151;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.github-icon {
    flex-shrink: 0;
}

.mode-title {
    font-size: 1.5rem;
    margin-bottom: var(--gap-lg);
    color: var(--text-primary);
}

/* ===========================================
   Notice Banner
   =========================================== */

.notice-banner {
    display: flex;
    align-items: flex-start;
    gap: var(--gap-md);
    padding: var(--gap-md) var(--gap-lg);
    margin-bottom: var(--gap-xl);
    background: rgba(245, 158, 11, 0.15);
    border: 1px solid rgba(245, 158, 11, 0.3);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--accent-gold);
}

.notice-icon {
    font-size: 1.25rem;
    flex-shrink: 0;
}

.notice-banner p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
    margin: 0;
}

.notice-banner strong {
    color: var(--accent-gold);
}

.notice-banner a {
    color: var(--accent-secondary);
    text-decoration: underline;
    transition: color var(--transition-fast);
}

.notice-banner a:hover {
    color: var(--accent-primary);
}