/* Minesweeper Index Styles - Premium Dark Theme */

:root {
    --primary-gradient: linear-gradient(135deg, #FF6B6B 0%, #C94B4B 100%);
    /* Reddish for Mines */
    --dark-bg: #1a1a2e;
    /* Deep blue/purple bg */
    --card-bg: rgba(255, 255, 255, 0.05);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --border-color: rgba(255, 255, 255, 0.1);
    --accent-color: #FF6B6B;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', 'Segoe UI', sans-serif;
    background-color: #1A1A2E;
    background-image: url('/images/minesweeper-bg.svg');
    background-size: 400px;
    background-repeat: repeat;
    color: var(--text-primary);
    min-height: 100vh;
}

.game-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 40px 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.game-header {
    text-align: center;
    margin-bottom: 60px;
    position: relative;
}

.back-button {
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 30px;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
    backdrop-filter: blur(5px);
}

.back-button:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    transform: translateY(-50%) translateX(-4px);
}

.game-header h1 {
    font-size: 3rem;
    font-weight: 800;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -1px;
}

/* Main Content */
.game-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.game-card {
    background: var(--card-bg);
    border-radius: 24px;
    border: 1px solid var(--border-color);
    padding: 50px;
    text-align: center;
    backdrop-filter: blur(20px);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    max-width: 500px;
    margin: 0 auto;
    box-shadow: 0 10px 40px -10px rgba(0, 0, 0, 0.5);
}

.game-card:hover {
    border-color: rgba(255, 107, 107, 0.3);
    transform: translateY(-8px);
    box-shadow: 0 20px 50px -10px rgba(255, 107, 107, 0.2);
}

.card-icon {
    font-size: 4.5rem;
    margin-bottom: 25px;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 4px 10px rgba(255, 107, 107, 0.3));
}

.game-card h3 {
    font-size: 2rem;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.card-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 35px;
    line-height: 1.6;
}

.primary-button {
    padding: 16px 48px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 12px;
    border: none;
    background: var(--primary-gradient);
    color: white;
    box-shadow: 0 4px 15px rgba(255, 107, 107, 0.3);
}

.primary-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 107, 107, 0.5);
}

.primary-button:active {
    transform: translateY(1px);
}

/* Game Rules */
.game-rules {
    background: var(--card-bg);
    border-radius: 24px;
    border: 1px solid var(--border-color);
    padding: 40px;
    backdrop-filter: blur(10px);
}

.game-rules h3 {
    font-size: 1.5rem;
    margin-bottom: 25px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.game-rules h3::before {
    content: '';
    display: block;
    width: 4px;
    height: 24px;
    background: var(--accent-color);
    border-radius: 2px;
}

.game-rules ul {
    list-style: none;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.game-rules li {
    font-size: 1rem;
    color: var(--text-secondary);
    padding: 15px;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 12px;
    border: 1px solid transparent;
    transition: border-color 0.3s;
}

.game-rules li:hover {
    border-color: rgba(255, 255, 255, 0.1);
}

/* Responsive */
/* Responsive */
@media (max-width: 768px) {
    .game-container {
        padding: 20px 15px;
    }

    .game-header {
        margin-bottom: 30px;
    }

    .game-header h1 {
        font-size: 2rem;
    }

    .back-button {
        position: static;
        transform: none;
        margin-bottom: 20px;
        width: 100%;
        justify-content: center;
    }

    .game-card {
        padding: 30px 20px;
    }

    .card-icon {
        font-size: 3.5rem;
    }

    .game-card h3 {
        font-size: 1.5rem;
    }

    .game-rules {
        padding: 25px;
    }
}

@media (max-width: 480px) {
    .game-header h1 {
        font-size: 1.8rem;
    }

    .primary-button {
        width: 100%;
        justify-content: center;
        padding: 14px 20px;
    }

    .game-rules ul {
        grid-template-columns: 1fr;
    }
}