/* Landing Page Styles */

/* Landing Page Container */
.landing-page {
    min-height: 100vh;
    background: var(--bg-primary);
    color: var(--text-primary);
}

/* Landing Header */
.landing-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    backdrop-filter: blur(10px);
}

.landing-header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.landing-logo {
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.landing-logo-img {
    height: 48px;
    width: auto;
}

.landing-nav {
    display: flex;
    gap: 1rem;
    align-items: center;
}

/* Hero Section */
.landing-hero {
    max-width: 1200px;
    margin: 0 auto;
    padding: 4rem 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    min-height: calc(100vh - 120px);
}

.landing-hero-content {
    animation: fadeInUp 0.8s ease-out;
}

.landing-title {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.1;
}

.landing-subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.landing-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 2rem;
}

.landing-cta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
    border-radius: 12px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: white;
}

/* Chess Board Preview */
.landing-hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.chess-board-preview {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    transform: perspective(1000px) rotateY(-15deg);
    transition: transform 0.5s ease;
}

.chess-board-preview:hover {
    transform: perspective(1000px) rotateY(0deg);
}

.chess-row {
    display: contents;
}

.chess-square {
    width: 100px;
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
}

.chess-square.light {
    background: #f0d9b5;
}

.chess-square.dark {
    background: #b58863;
}

/* Features Section */
.landing-features {
    padding: 6rem 2rem;
    background: var(--bg-secondary);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

.features-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
    animation: fadeInUp 0.6s ease-out both;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
    border-color: var(--primary-color);
}

.feature-card:nth-child(1) { animation-delay: 0.1s; }
.feature-card:nth-child(2) { animation-delay: 0.2s; }
.feature-card:nth-child(3) { animation-delay: 0.3s; }
.feature-card:nth-child(4) { animation-delay: 0.4s; }

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

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

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Stats Section */
.landing-stats {
    padding: 4rem 2rem;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
}

.stats-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
}

.stat-item {
    text-align: center;
    color: white;
}

.stat-number {
    display: block;
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.stat-label {
    display: block;
    font-size: 1.125rem;
    opacity: 0.9;
}

/* Footer */
.landing-footer {
    background: var(--bg-card);
    border-top: 1px solid var(--border-color);
    padding: 3rem 2rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 2rem;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-logo {
    height: 48px;
    width: auto;
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--primary-color);
}

.footer-copyright {
    text-align: right;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Mobile Responsiveness */
@media (max-width: 992px) {
    .landing-hero {
        grid-template-columns: 1fr;
        padding: 3rem 1.5rem;
        text-align: center;
    }

    .landing-title {
        font-size: 3rem;
    }

    .landing-subtitle {
        font-size: 1.25rem;
    }

    .landing-cta {
        justify-content: center;
    }

    .chess-board-preview {
        transform: perspective(1000px) rotateY(0deg);
    }

    .chess-square {
        width: 80px;
        height: 80px;
        font-size: 2.5rem;
    }

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

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-copyright {
        text-align: center;
    }
}

@media (max-width: 576px) {
    .landing-header-content {
        padding: 0 1rem;
    }

    .landing-logo-img {
        height: 36px;
    }

    .landing-nav {
        gap: 0.5rem;
    }

    .landing-nav .btn {
        padding: 0.5rem 1rem;
        font-size: 0.875rem;
    }

    .landing-title {
        font-size: 2.5rem;
    }

    .landing-subtitle {
        font-size: 1rem;
    }

    .landing-description {
        font-size: 1rem;
    }

    .btn-lg {
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }

    .chess-square {
        width: 60px;
        height: 60px;
        font-size: 2rem;
    }

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

    .feature-card {
        padding: 1.5rem;
    }

    .stat-number {
        font-size: 2rem;
    }

    .stat-label {
        font-size: 1rem;
    }

    .landing-stats {
        padding: 3rem 1rem;
    }

    .landing-features {
        padding: 4rem 1rem;
    }

    .landing-footer {
        padding: 2rem 1rem;
    }
}