/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --accent-color: #2600cf;
    --text-color: #e4e4e7;
    --text-secondary: #a1a1aa;
    --background-dark: #0f0f23;
    --background-darker: #0a0a14;
    --background-light: #1a1a2e;
    --card-bg: #16213e;
    --border-color: #27272a;
    --white: #ffffff;
    --border-radius: 8px;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
    --glow: 0 0 20px rgba(102, 126, 234, 0.3);
    --transition: all 0.3s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-dark);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand h1 {
    font-size: 1.8rem;
    font-weight: 700;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
}

.nav-menu a:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    padding: 2rem 0;
    text-align: center;
    box-shadow: var(--glow);
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.hero .subtitle {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 2rem;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    box-shadow: var(--glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(102, 126, 234, 0.5);
}

/* Sections */
.section {
    padding: 4rem 0;
}

.section h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
    text-shadow: var(--glow);
}

.section-intro {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    color: var(--text-secondary);
}

/* Cards */
.card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(102, 126, 234, 0.3);
}

/* Quick Reference Card */
.quick-reference {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    border-left: 4px solid var(--accent-color);
    color: var(--white);
    box-shadow: var(--glow);
}

.quick-reference h3 {
    color: var(--white);
    margin-bottom: 0.5rem;
}

.reference-subtitle {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 1rem;
    font-style: italic;
}

.reference-list {
    margin-left: 1.5rem;
    margin-bottom: 1.5rem;
}

.reference-list li {
    margin-bottom: 0.75rem;
    font-size: 1.05rem;
}

.reference-list strong {
    color: var(--accent-color);
}

.reference-tip {
    background-color: rgba(0, 0, 0, 0.3);
    padding: 1rem;
    border-radius: 6px;
    border-left: 3px solid var(--accent-color);
    margin-top: 1rem;
}

.reference-tip strong {
    color: var(--accent-color);
}

.card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.card h4 {
    color: var(--secondary-color);
    margin: 1.5rem 0 0.75rem 0;
    font-size: 1.2rem;
}

.card ul {
    margin-left: 2rem;
    margin-top: 0.5rem;
}

.card li {
    margin-bottom: 0.5rem;
}

/* House Rules Grid */
.house-rules-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

/* House Rule Accordion Cards */
.house-rule-card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.house-rule-card:hover {
    box-shadow: 0 8px 30px rgba(102, 126, 234, 0.3);
}

.house-rule-card details {
    cursor: pointer;
}

.house-rule-card summary {
    padding: 1.5rem 2rem;
    list-style: none;
    position: relative;
    background-color: var(--card-bg);
    transition: var(--transition);
}

.house-rule-card summary::-webkit-details-marker {
    display: none;
}

.house-rule-card summary::after {
    content: '+';
    position: absolute;
    right: 2rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 2rem;
    font-weight: 300;
    color: var(--primary-color);
    transition: var(--transition);
}

.house-rule-card details[open] summary::after {
    content: '−';
}

.house-rule-card summary:hover {
    background-color: var(--background-light);
}

.house-rule-card summary h3 {
    color: var(--primary-color);
    margin: 0 0 0.5rem 0;
    font-size: 1.5rem;
    padding-right: 3rem;
}

.rule-brief {
    margin: 0;
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.5;
    padding-right: 3rem;
}

.rule-content {
    padding: 0 2rem 2rem 2rem;
    border-top: 1px solid var(--border-color);
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.rule-content h4 {
    color: var(--secondary-color);
    margin: 1.5rem 0 0.75rem 0;
    font-size: 1.2rem;
}

.rule-content h4:first-child {
    margin-top: 1rem;
}

.rule-content ul {
    margin: 0.5rem 0 1rem 1.5rem;
}

.rule-content li {
    margin-bottom: 0.5rem;
}

.rule-faq {
    margin: 0;
}

.rule-faq dt {
    font-weight: 600;
    color: var(--primary-color);
    margin-top: 1rem;
    margin-bottom: 0.5rem;
}

.rule-faq dt:first-child {
    margin-top: 0.5rem;
}

.rule-faq dd {
    margin: 0 0 0 1rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Footer */
footer {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    padding: 2rem 0;
    text-align: center;
    margin-top: 4rem;
    border-top: 1px solid var(--border-color);
}

/* Responsive Design */
@media (max-width: 768px) {
    .navbar .container {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-menu {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero .subtitle {
        font-size: 1.2rem;
    }

    .section h2 {
        font-size: 2rem;
    }

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

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    /* margin: 1.5rem 0; */
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
}

table thead {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
}

table th,
table td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

table th {
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 0.5px;
}

table tbody tr:hover {
    background-color: var(--background-light);
}

table tbody tr:last-child td {
    border-bottom: none;
}

.scoring-table td:last-child,
.player-table td:last-child {
    font-weight: 600;
    color: var(--primary-color);
}

/* Section Backgrounds */

#core-rules {
    background-color: transparent;
}

#about {
    background-color: transparent;
}