/* Opening Pages Styles */
@import url('nav.css');

:root {
    --bg-dark: #0a0a1a;
    --bg-card: rgba(20, 20, 40, 0.8);
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --accent: #d4af37;
    --board-light: #f0d9b5;
    --board-dark: #b58863;
    --highlight: rgba(212, 175, 55, 0.5);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-dark);
    background-image: radial-gradient(ellipse at top, rgba(212, 175, 55, 0.1) 0%, transparent 50%);
    color: var(--text-primary);
    line-height: 1.7;
    min-height: 100vh;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
    padding-top: 70px;
}

/* Header */
.page-header {
    text-align: center;
    margin-bottom: 32px;
    padding-top: 20px;
}

.logo-link {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    margin-bottom: 24px;
}

.logo-icon {
    font-size: 48px;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.page-title {
    font-size: 2.25rem;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.page-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.eco-badge {
    display: inline-block;
    background: var(--accent);
    color: var(--bg-dark);
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-top: 12px;
}

/* Breadcrumb */
.breadcrumb {
    display: flex;
    gap: 8px;
    align-items: center;
    margin-bottom: 24px;
    font-size: 0.875rem;
}

.breadcrumb a {
    color: var(--accent);
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.breadcrumb span {
    color: var(--text-secondary);
}

/* Content sections */
.content-section {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 24px;
}

.section-title {
    color: var(--accent);
    margin-bottom: 16px;
    font-size: 1.35rem;
}

.content-section p {
    margin-bottom: 16px;
    color: var(--text-secondary);
}

.content-section p:last-child {
    margin-bottom: 0;
}

/* Opening Animation Container */
.opening-animation-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.opening-animation-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.opening-board {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    grid-template-rows: repeat(8, 1fr);
    width: 100%;
    max-width: 400px;
    aspect-ratio: 1;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.opening-square {
    display: flex;
    align-items: center;
    justify-content: center;
    aspect-ratio: 1;
    transition: background-color 0.3s ease;
    position: relative;
}

/* Board coordinate labels */
.coord-label {
    position: absolute;
    font-size: 0.65rem;
    font-weight: 600;
    font-family: 'Inter', sans-serif;
    line-height: 1;
    pointer-events: none;
    user-select: none;
}

.rank-label {
    top: 2px;
    left: 3px;
}

.file-label {
    bottom: 2px;
    right: 3px;
}

.coord-label.on-light {
    color: var(--board-dark);
}

.coord-label.on-dark {
    color: var(--board-light);
}

.opening-square.light {
    background-color: var(--board-light);
}

.opening-square.dark {
    background-color: var(--board-dark);
}

.opening-square.highlight {
    background-color: var(--highlight) !important;
}

.opening-piece {
    font-size: 2.5rem;
    line-height: 1;
    transition: transform 0.2s ease;
}

@media (max-width: 500px) {
    .opening-piece {
        font-size: 2rem;
    }
}

.opening-piece.white {
    color: #ffffff;
    filter: drop-shadow(1px 1px 1px rgba(0, 0, 0, 0.5));
}

.opening-piece.black {
    color: #222222;
}

/* Controls */
.opening-controls {
    display: flex;
    gap: 8px;
    justify-content: center;
}

.opening-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text-primary);
    width: 40px;
    height: 40px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    transition: background 0.2s, transform 0.2s;
}

.opening-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.05);
}

.move-indicator {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Move Explanation */
.move-explanation {
    background: rgba(212, 175, 55, 0.1);
    border-left: 3px solid var(--accent);
    padding: 12px 16px;
    border-radius: 0 8px 8px 0;
    margin-top: 16px;
    width: 100%;
    max-width: 400px;
}

.move-explanation .move-san {
    font-weight: 600;
    color: var(--accent);
}

.move-explanation .move-text {
    color: var(--text-secondary);
    margin-top: 4px;
}

/* Moves List */
.moves-list {
    display: grid;
    gap: 12px;
}

.move-item {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    padding: 12px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 8px;
}

.move-number {
    font-weight: 600;
    color: var(--accent);
    min-width: 30px;
}

.move-notation {
    font-family: monospace;
    font-size: 1rem;
    color: var(--text-primary);
    min-width: 50px;
}

.move-explanation-text {
    color: var(--text-secondary);
    flex: 1;
}

/* Pros and Cons */
.pros-cons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

@media (max-width: 600px) {
    .pros-cons {
        grid-template-columns: 1fr;
    }
}

.pros, .cons {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 8px;
    padding: 16px;
}

.pros h3, .cons h3 {
    margin-bottom: 12px;
    font-size: 1rem;
}

.pros h3 {
    color: #4ade80;
}

.cons h3 {
    color: #f87171;
}

.pros ul, .cons ul {
    list-style: none;
    padding: 0;
}

.pros li, .cons li {
    padding: 6px 0;
    padding-left: 24px;
    position: relative;
    color: var(--text-secondary);
}

.pros li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #4ade80;
}

.cons li::before {
    content: '✗';
    position: absolute;
    left: 0;
    color: #f87171;
}

/* Famous Games */
.famous-games {
    display: grid;
    gap: 12px;
}

.game-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 8px;
}

.game-players {
    color: var(--text-primary);
}

.game-meta {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Related Openings */
.related-openings {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.related-link {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(212, 175, 55, 0.1);
    border: 1px solid rgba(212, 175, 55, 0.3);
    border-radius: 8px;
    color: var(--accent);
    text-decoration: none;
    font-size: 0.875rem;
    transition: background 0.2s, transform 0.2s;
}

.related-link:hover {
    background: rgba(212, 175, 55, 0.2);
    transform: translateY(-2px);
}

/* CTA Section */
.cta-section {
    text-align: center;
    margin: 32px 0;
}

.cta-button {
    display: inline-block;
    background: linear-gradient(135deg, var(--accent) 0%, #b8960a 100%);
    color: var(--bg-dark);
    padding: 14px 28px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: transform 0.2s, box-shadow 0.2s;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(212, 175, 55, 0.4);
}

/* Ad Container */
.ad-container {
    width: 100%;
    min-height: 100px;
    background: var(--bg-card);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 24px 0;
    overflow: hidden;
}

/* Footer */
.page-footer {
    text-align: center;
    padding: 32px 20px;
    color: var(--text-secondary);
    font-size: 0.875rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 40px;
}

.footer-nav {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.footer-nav a {
    color: var(--accent);
    text-decoration: none;
}

.footer-nav a:hover {
    text-decoration: underline;
}

/* Index Page Specific */
.openings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    margin-top: 24px;
}

.opening-card {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 20px;
    text-decoration: none;
    transition: transform 0.2s, box-shadow 0.2s;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.opening-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 32px rgba(212, 175, 55, 0.15);
}

.opening-card-title {
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.opening-card-subtitle {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.opening-card-eco {
    display: inline-block;
    font-size: 0.75rem;
    background: rgba(212, 175, 55, 0.2);
    color: var(--accent);
    padding: 2px 8px;
    border-radius: 4px;
}

.category-section {
    margin-bottom: 40px;
}

.category-title {
    color: var(--accent);
    font-size: 1.5rem;
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 2px solid rgba(212, 175, 55, 0.3);
}

/* Highlight box */
.highlight-box {
    background: rgba(212, 175, 55, 0.1);
    padding: 16px;
    border-radius: 8px;
    border-left: 4px solid var(--accent);
    margin: 16px 0;
}

.highlight-box strong {
    color: var(--text-primary);
}