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

:root {
    /* Color Palette */
    --color-bg: #0a0a0a;
    --color-bg-elevated: #141414;
    --color-bg-card: #1a1a1a;
    --color-text: #e8e4dc;
    --color-text-muted: #888;
    --color-crimson: #8B0000;
    --color-crimson-light: #a01010;
    --color-gold: #B8860B;
    --color-gold-muted: #8a6508;
    --color-border: #2a2a2a;

    /* Typography */
    --font-serif: 'Cormorant Garamond', Georgia, serif;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2.5rem;
    --space-xl: 4rem;
    --space-2xl: 6rem;

    /* Container */
    --container-max: 1100px;
    --container-padding: 1.25rem;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-serif);
    font-size: 1.125rem;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
}

/* ==================== Typography ==================== */
h1, h2, h3, h4 {
    font-family: var(--font-serif);
    font-weight: 600;
    line-height: 1.2;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.25rem; }

p { margin-bottom: 1em; }
p:last-child { margin-bottom: 0; }

/* ==================== Layout ==================== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

section {
    padding: var(--space-xl) 0;
}

.section-title {
    text-align: center;
    color: var(--color-text);
    margin-bottom: var(--space-sm);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.section-intro {
    text-align: center;
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto var(--space-lg);
    font-size: 1rem;
}

/* ==================== Buttons ==================== */
.btn {
    display: inline-block;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: none;
    padding: 0.875rem 2rem;
    border-radius: 2px;
    transition: all 0.2s ease;
    cursor: pointer;
    border: none;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-crimson) 0%, var(--color-crimson-light) 100%);
    color: var(--color-text);
    border: 1px solid var(--color-crimson-light);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--color-crimson-light) 0%, #b01515 100%);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(139, 0, 0, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--color-gold);
    border: 1px solid var(--color-gold);
}

.btn-secondary:hover {
    background: var(--color-gold);
    color: var(--color-bg);
}

.btn-large {
    padding: 1rem 3rem;
    font-size: 1rem;
}

/* ==================== Hero Section ==================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background:
        radial-gradient(ellipse at center top, rgba(139, 0, 0, 0.15) 0%, transparent 50%),
        linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-elevated) 100%);
    text-align: center;
    padding: var(--space-lg) 0;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    opacity: 0.03;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero .brand {
    font-size: 0.75rem;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--color-gold);
    margin-bottom: var(--space-md);
}

.hero .title {
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--space-sm);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    line-height: 1.1;
}

.hero .subtitle {
    font-size: 1.125rem;
    font-style: italic;
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

.hero .tagline {
    font-size: 1rem;
    font-style: italic;
    color: var(--color-crimson);
    margin-bottom: var(--space-lg);
}

.hero .btn .price-strike {
    text-decoration: line-through;
    opacity: 0.6;
    font-size: 0.85em;
}

.hero-promo {
    margin-top: var(--space-sm);
    font-family: var(--font-sans);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--color-gold);
    text-transform: uppercase;
    letter-spacing: 0.15em;
}

/* ==================== Features Section ==================== */
.features {
    background: var(--color-bg-elevated);
}

.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
}

.feature-card {
    background: var(--color-bg-card);
    padding: var(--space-md);
    border: 1px solid var(--color-border);
    text-align: center;
}

.feature-icon {
    color: var(--color-crimson);
    margin-bottom: var(--space-sm);
}

.feature-card h3 {
    color: var(--color-gold);
    margin-bottom: var(--space-xs);
    font-size: 1.1rem;
}

.feature-card p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    line-height: 1.5;
}

/* ==================== Preview Section ==================== */
.preview {
    background: var(--color-bg);
}

.preview-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    align-items: center;
}

.preview-details {
    text-align: center;
}

.preview-details h3 {
    color: var(--color-gold);
    margin-bottom: var(--space-sm);
}

.preview-list {
    list-style: none;
    margin-bottom: var(--space-md);
    text-align: left;
    display: inline-block;
}

.preview-list li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

.preview-list li::before {
    content: "✦";
    position: absolute;
    left: 0;
    color: var(--color-crimson);
    font-size: 0.75rem;
}

.preview-image {
    width: 100%;
    max-width: 280px;
    position: relative;
}

.pdf-mockup {
    aspect-ratio: 8.5 / 11;
    background: linear-gradient(135deg, var(--color-bg-card) 0%, var(--color-bg-elevated) 100%);
    border: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.pdf-mockup-img {
    width: 100%;
    height: auto;
    border: 1px solid var(--color-border);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    cursor: zoom-in;
    transition: transform 0.3s ease, box-shadow 0.3s ease, z-index 0s 0s;
    position: relative;
    z-index: 1;
}

.pdf-mockup-img:hover {
    transform: scale(1.7);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.6);
    z-index: 100;
    transition: transform 0.3s ease, box-shadow 0.3s ease, z-index 0s 0s;
}

.pdf-label {
    color: var(--color-text-muted);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* ==================== Compatibility Section ==================== */
.compatibility {
    background: var(--color-bg-elevated);
    padding: var(--space-lg) 0;
}

.game-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-xs);
}

.game-tag {
    font-family: var(--font-sans);
    font-size: 0.8rem;
    padding: 0.5rem 1rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    color: var(--color-text-muted);
    position: relative;
    cursor: help;
    transition: border-color 0.2s ease, color 0.2s ease;
}

.game-tag:hover {
    border-color: var(--color-crimson);
    color: var(--color-text);
}

/* Tooltip styling */
.game-tag[data-tooltip]::before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: calc(100% + 10px);
    left: 50%;
    transform: translateX(-50%);
    padding: 0.5rem 0.75rem;
    background: linear-gradient(135deg, var(--color-crimson) 0%, #6B0000 100%);
    color: var(--color-text);
    font-size: 0.75rem;
    font-style: italic;
    white-space: nowrap;
    border-radius: 4px;
    border: 1px solid var(--color-gold);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
    z-index: 100;
}

/* Tooltip arrow */
.game-tag[data-tooltip]::after {
    content: '';
    position: absolute;
    bottom: calc(100% + 2px);
    left: 50%;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-top-color: var(--color-gold);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
    z-index: 100;
}

.game-tag[data-tooltip]:hover::before {
    opacity: 1;
    transform: translateX(-50%) translateY(-2px);
}

.game-tag[data-tooltip]:hover::after {
    opacity: 1;
}

/* ==================== Purchase Section ==================== */
.purchase {
    background:
        radial-gradient(ellipse at center, rgba(139, 0, 0, 0.1) 0%, transparent 60%),
        var(--color-bg);
    padding: var(--space-2xl) 0;
}

.purchase-card {
    max-width: 420px;
    margin: 0 auto;
    text-align: center;
    padding: var(--space-lg);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    position: relative;
}

.promo-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--color-crimson) 0%, var(--color-crimson-light) 100%);
    color: var(--color-text);
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: 0.4rem 1rem;
    white-space: nowrap;
}

.purchase-card h2 {
    color: var(--color-text);
    margin-bottom: var(--space-xs);
    font-size: 1.5rem;
    margin-top: var(--space-xs);
}

.purchase-subtitle {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    margin-bottom: var(--space-md);
}

.price {
    margin-bottom: var(--space-md);
}

.price-original {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    text-decoration: line-through;
    margin-right: 0.5rem;
}

.price-amount {
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-gold);
}

.price-note {
    display: block;
    font-size: 0.875rem;
    color: var(--color-crimson);
    margin-top: 0.25rem;
}

.purchase-includes {
    list-style: none;
    text-align: left;
    margin-bottom: var(--space-md);
    padding: var(--space-sm) 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.purchase-includes li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

.purchase-includes li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--color-gold);
}

.light-mode-link {
    margin-top: 0.75rem;
    margin-bottom: 0.25rem;
    font-size: 0.85rem;
    text-align: center;
}

.light-mode-link a {
    color: var(--color-text-muted);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: color 0.2s ease, border-bottom-color 0.2s ease;
}

.light-mode-link a:hover {
    color: var(--color-gold);
    border-bottom-color: var(--color-gold);
}

.purchase-note {
    margin-top: var(--space-sm);
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

/* ==================== Footer ==================== */
.footer {
    background: var(--color-bg);
    padding: var(--space-lg) 0;
    border-top: 1px solid var(--color-border);
    text-align: center;
}

.footer-brand {
    margin-bottom: var(--space-sm);
}

.footer-logo {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text);
    letter-spacing: 0.05em;
}

.footer-tagline {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    font-style: italic;
}

.footer-links {
    margin-bottom: var(--space-sm);
}

.footer-links a {
    color: var(--color-gold);
    text-decoration: none;
    font-size: 0.9rem;
}

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

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

/* ==================== Responsive: Tablet ==================== */
@media (min-width: 640px) {
    :root {
        --container-padding: 2rem;
    }

    h1 { font-size: 3rem; }
    h2 { font-size: 2.25rem; }

    .hero .title {
        font-size: 4rem;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .preview-content {
        flex-direction: row;
        text-align: left;
    }

    .preview-details {
        text-align: left;
        flex: 1;
    }

    .preview-image {
        flex-shrink: 0;
    }
}

/* ==================== Responsive: Desktop ==================== */
@media (min-width: 1024px) {
    h1 { font-size: 3.5rem; }

    .hero .title {
        font-size: 5rem;
    }

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

    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .feature-card {
        padding: var(--space-lg);
    }

    .preview-image {
        max-width: 320px;
    }
}