/* CSS Variables for Theme System */
:root {
    /* Dark theme (default) */
    --bg: #0f172a;
    --card: #111827;
    --text: #e5e7eb;
    --muted: #94a3b8;
    --accent: #38bdf8;
    --ok: #10b981;
    --warn: #f59e0b;
    --bad: #ef4444;
    --border: #374151;
    --shadow: rgba(0, 0, 0, 0.25);
    --overlay: rgba(0, 0, 0, 0.8);
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    
    /* Border radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* Typography */
    --font-size-xs: 12px;
    --font-size-sm: 14px;
    --font-size-base: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 20px;
    --font-size-2xl: 24px;
    --font-size-3xl: 32px;
    --font-size-4xl: 40px;
}

/* Light theme override */
@media (prefers-color-scheme: light) {
    :root {
        --bg: #ffffff;
        --card: #f8fafc;
        --text: #1f2937;
        --muted: #6b7280;
        --accent: #0ea5e9;
        --ok: #059669;
        --warn: #d97706;
        --bad: #dc2626;
        --border: #e5e7eb;
        --shadow: rgba(0, 0, 0, 0.1);
        --overlay: rgba(0, 0, 0, 0.5);
    }
}

[data-theme="light"] {
    --bg: #ffffff;
    --card: #f8fafc;
    --text: #1f2937;
    --muted: #6b7280;
    --accent: #0ea5e9;
    --ok: #059669;
    --warn: #d97706;
    --bad: #dc2626;
    --border: #e5e7eb;
    --shadow: rgba(0, 0, 0, 0.1);
    --overlay: rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] {
    --bg: #0f172a;
    --card: #111827;
    --text: #e5e7eb;
    --muted: #94a3b8;
    --accent: #38bdf8;
    --ok: #10b981;
    --warn: #f59e0b;
    --bad: #ef4444;
    --border: #374151;
    --shadow: rgba(0, 0, 0, 0.25);
    --overlay: rgba(0, 0, 0, 0.8);
}

/* Base Styles */
* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text);
    background-color: var(--bg);
    min-height: 100vh;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-lg);
    }
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: linear-gradient(to bottom, var(--bg), transparent);
    transition: all 0.3s ease;
    padding: var(--spacing-sm) 0;
}

.header.scrolled {
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 2px 8px var(--shadow);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
}

.header-logo .logo-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    color: var(--text);
    font-weight: 600;
    font-size: var(--font-size-lg);
}

/* Use official game logo image in header */
.header-logo .logo-img {
    height: 28px;
    width: auto;
    display: block;
}

@media (min-width: 768px) {
    .header-logo .logo-img { height: 32px; }
}

.nav-card-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.nav-card-button {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: var(--card);
    border: 1px solid var(--border);
    color: var(--text);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.nav-card-button:hover,
.nav-card-button:focus-visible {
    color: var(--accent);
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.15);
    outline: none;
}

.nav-card-button-icon {
    display: block;
}

.nav-card-button-label {
    line-height: 1;
}

.nav-card {
    position: absolute;
    top: calc(100% + var(--spacing-sm));
    right: 0;
    width: min(320px, calc(100vw - var(--spacing-2xl)));
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: 0 18px 40px rgba(15, 23, 42, 0.35);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(-8px);
    transition: opacity 0.2s ease, transform 0.2s ease;
    z-index: 1001;
}

.nav-card.open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0);
}

.nav-card-inner {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
}

.nav-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-sm);
}

.nav-card-title {
    margin: 0;
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text);
}

.nav-card-close {
    background: none;
    border: none;
    color: var(--muted);
    padding: var(--spacing-xs);
    border-radius: 50%;
    cursor: pointer;
    transition: color 0.2s ease, background 0.2s ease;
    min-width: 32px;
    min-height: 32px;
}

.nav-card-close:hover,
.nav-card-close:focus-visible {
    color: var(--accent);
    background: rgba(56, 189, 248, 0.1);
    outline: none;
}

.nav-menu {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: var(--spacing-sm);
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.nav-menu a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-xs);
    text-decoration: none;
    color: var(--text);
    font-weight: 500;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm) var(--spacing-md);
    transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.nav-menu a:hover,
.nav-menu a:focus-visible {
    color: var(--accent);
    border-color: var(--accent);
    background: rgba(56, 189, 248, 0.08);
    transform: translateY(-1px);
    outline: none;
}

.nav-card-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.55);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.2s ease;
    z-index: 1000;
}

.nav-card-backdrop.open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

body.nav-locked {
    overflow: hidden;
}

.site-nav-section {
    padding: var(--spacing-2xl) 0;
}

.site-nav-title {
    margin: 0;
    font-size: var(--font-size-3xl);
    font-weight: 700;
    text-align: center;
    letter-spacing: -0.01em;
}

.site-nav-subtitle {
    margin: var(--spacing-sm) auto var(--spacing-2xl);
    max-width: 720px;
    color: var(--muted);
    text-align: center;
    font-size: var(--font-size-lg);
}

.site-nav-grid {
    display: grid;
    gap: var(--spacing-lg);
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.site-nav-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl) var(--spacing-lg);
    box-shadow: 0 18px 36px rgba(15, 23, 42, 0.28);
    color: var(--text);
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease, background 0.2s ease;
    min-height: 180px;
}

.site-nav-card:hover,
.site-nav-card:focus-visible {
    transform: translateY(-4px);
    box-shadow: 0 24px 42px rgba(15, 23, 42, 0.35);
    border-color: var(--accent);
    outline: none;
}

.site-nav-card[data-active="true"] {
    border-color: var(--accent);
    background: rgba(56, 189, 248, 0.12);
    box-shadow: 0 20px 40px rgba(56, 189, 248, 0.25);
}

.site-nav-card-icon {
    font-size: var(--font-size-4xl);
    line-height: 1;
}

.site-nav-card-label {
    font-size: var(--font-size-xl);
    font-weight: 600;
    text-align: center;
}

.site-nav-card-desc {
    font-size: var(--font-size-sm);
    color: var(--muted);
    text-align: center;
    max-width: 260px;
}

@media (max-width: 767px) {
    .site-nav-section {
        padding: var(--spacing-xl) 0;
    }

    .site-nav-subtitle {
        margin-bottom: var(--spacing-xl);
        font-size: var(--font-size-base);
    }

    .site-nav-card {
        padding: var(--spacing-lg);
        min-height: 0;
    }
}

@media (min-width: 768px) {
    .nav-card-wrapper {
        margin-left: auto;
    }

    .nav-menu {
        grid-template-columns: repeat(2, minmax(140px, 1fr));
    }
}

@media (min-width: 1024px) {
    .nav-menu {
        grid-template-columns: repeat(3, minmax(140px, 1fr));
    }
}


.header-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.lang-switch {
    background: var(--card);
    border: 1px solid var(--border);
    color: var(--text);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
}

.theme-toggle {
    background: none;
    border: none;
    color: var(--muted);
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 44px;
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle:hover {
    color: var(--accent);
    background: var(--card);
}

.theme-icon {
    transition: opacity 0.3s ease;
}

[data-theme="dark"] .theme-icon-dark,
[data-theme="light"] .theme-icon-light {
    opacity: 1;
}

[data-theme="dark"] .theme-icon-light,
[data-theme="light"] .theme-icon-dark {
    opacity: 0;
    position: absolute;
}

.menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    padding: var(--spacing-sm);
    cursor: pointer;
    min-width: 44px;
    min-height: 44px;
}

.menu-toggle span {
    width: 20px;
    height: 2px;
    background: var(--muted);
    border-radius: 1px;
    transition: all 0.3s ease;
}

@media (min-width: 768px) {
    .menu-toggle {
        display: none;
    }
}

/* Main Content */
#main {
    padding-top: 80px;
}

/* Hero Section */
.hero {
    padding: var(--spacing-2xl) 0;
    text-align: center;
    background: linear-gradient(135deg, var(--bg) 0%, var(--card) 100%);
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin: 0 0 var(--spacing-md);
    background: linear-gradient(135deg, var(--accent), var(--ok));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

@media (min-width: 768px) {
    .hero-title {
        font-size: var(--font-size-4xl);
    }
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: var(--muted);
    margin: 0 0 var(--spacing-md);
}

.hero-updated {
    font-size: var(--font-size-sm);
    color: var(--muted);
    margin: 0 0 var(--spacing-xl);
}

.timezone {
    opacity: 0.7;
}

.hero-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    align-items: center;
}

@media (min-width: 640px) {
    .hero-actions {
        flex-direction: row;
        justify-content: center;
    }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-decoration: none;
    font-weight: 600;
    font-size: var(--font-size-base);
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    min-height: 44px;
    min-width: 44px;
}

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

.btn-primary:hover {
    background: var(--accent);
    filter: brightness(1.1);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(56, 189, 248, 0.3);
}

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

.btn-secondary:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--shadow);
}

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

.btn-ghost:hover {
    color: var(--accent);
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--shadow);
}

.btn-small {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-sm);
    min-height: 36px;
}

.btn-success {
    background: var(--ok);
    color: white;
}

.btn-success:hover {
    filter: brightness(1.1);
}

.btn-warning {
    background: var(--warn);
    color: white;
}

.btn-warning:hover {
    filter: brightness(1.1);
}

.btn-danger {
    background: var(--bad);
    color: white;
}

.btn-danger:hover {
    filter: brightness(1.1);
}

/* Sections */
section {
    padding: var(--spacing-2xl) 0;
    border-bottom: 1px solid var(--border);
}

section:last-child {
    border-bottom: none;
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-xl);
}

section h2 {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    margin: 0;
    color: var(--text);
}

@media (min-width: 768px) {
    section h2 {
        font-size: var(--font-size-3xl);
    }
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--muted);
    margin: 0 0 var(--spacing-xl);
    text-align: center;
}

/* Download Section */
.download-section {
    background: radial-gradient(1200px 400px at 50% -200px, rgba(56,189,248,0.12), transparent),
                linear-gradient(135deg, var(--bg) 0%, var(--card) 100%);
}

.download-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
}

@media (min-width: 760px) {
    .download-grid { grid-template-columns: repeat(2, 1fr); }
}

.download-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: 0 12px 35px var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.download-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent);
    box-shadow: 0 16px 45px var(--shadow);
}

.download-card-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.download-card h3 {
    margin: 0;
    font-size: var(--font-size-xl);
}

.platform-icon { color: var(--accent); }
.platform-icon.ios { color: var(--accent); }
.platform-icon.android { color: #34d399; }

.download-desc { color: var(--muted); margin: 0 0 var(--spacing-lg); }

.store-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--text);
    text-decoration: none;
    transition: transform 0.2s ease, color 0.2s ease;
}

.store-badge svg { width: 200px; height: 48px; }
.store-badge:hover { transform: translateY(-2px); color: var(--accent); }

.download-note {
    margin-top: var(--spacing-xl);
    text-align: center;
    color: var(--muted);
}

/* Codes Section */
.codes-controls {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

@media (min-width: 768px) {
    .codes-controls {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }
}

.search-container {
    position: relative;
    flex: 1;
    max-width: 400px;
}

.search-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md) var(--spacing-sm) 40px;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--card);
    color: var(--text);
    font-size: var(--font-size-base);
    transition: all 0.3s ease;
}

.search-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.1);
}

.search-icon {
    position: absolute;
    left: var(--spacing-sm);
    top: 50%;
    transform: translateY(-50%);
    color: var(--muted);
    pointer-events: none;
}

.filters {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.filter-select {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--card);
    color: var(--text);
    font-size: var(--font-size-sm);
    min-width: 120px;
}

/* Codes Grid */
.codes-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

@media (min-width: 640px) {
    .codes-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .codes-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.code-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.code-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 35px var(--shadow);
    border-color: var(--accent);
}

.code-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--ok));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.code-card:hover::before {
    opacity: 1;
}

.code-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
}

.code-value {
    font-family: 'Courier New', monospace;
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text);
    background: var(--bg);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

.status-badge {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-working {
    background: rgba(16, 185, 129, 0.1);
    color: var(--ok);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.status-untested {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warn);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.status-expired {
    background: rgba(239, 68, 68, 0.1);
    color: var(--bad);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.code-reward {
    color: var(--text);
    margin-bottom: var(--spacing-md);
    font-weight: 500;
}

.code-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--font-size-sm);
    color: var(--muted);
    margin-bottom: var(--spacing-md);
}

.code-actions {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.code-feedback {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-xs);
}

.feedback-stat {
    display: flex;
    align-items: center;
    gap: 4px;
    color: var(--muted);
}

.feedback-buttons {
    display: flex;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
}

.feedback-btn {
    background: none;
    border: 1px solid var(--border);
    color: var(--muted);
    padding: 2px var(--spacing-xs);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    cursor: pointer;
    transition: all 0.3s ease;
    min-height: 24px;
}

.feedback-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.feedback-btn.selected {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
}

.admin-controls {
    display: none;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
}

.admin-mode .admin-controls {
    display: flex;
}

.codes-empty {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--muted);
}

/* How to Redeem Section */
.redeem-methods {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

@media (min-width: 768px) {
    .redeem-methods {
        grid-template-columns: repeat(2, 1fr);
    }
}

.method-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: all 0.3s ease;
}

.method-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 35px var(--shadow);
    border-color: var(--accent);
}

.method-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.method-icon {
    color: var(--accent);
    margin-bottom: var(--spacing-md);
}

.method-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin: 0;
    color: var(--text);
}

.method-steps {
    list-style: none;
    padding: 0;
    margin: 0;
}

.method-steps li {
    position: relative;
    padding-left: var(--spacing-xl);
    padding-bottom: var(--spacing-md);
    color: var(--text);
    line-height: 1.6;
}

.method-steps li:before {
    content: counter(step);
    counter-increment: step;
    position: absolute;
    left: 0;
    top: 0;
    background: var(--accent);
    color: white;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.method-steps {
    counter-reset: step;
}

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

.method-steps a:hover {
    text-decoration: underline;
}

.redeem-tips {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    border-left: 4px solid var(--warn);
}

.redeem-tips h4 {
    margin: 0 0 var(--spacing-md);
    color: var(--warn);
    font-size: var(--font-size-lg);
}

.tips-list {
    margin: 0;
    padding-left: var(--spacing-lg);
}

.tips-list li {
    margin-bottom: var(--spacing-sm);
    color: var(--text);
}

/* Guide Section */
.guide-section .video-container {
    position: relative;
    width: 100%;
    max-width: 960px;
    margin: 0 auto var(--spacing-xl);
    aspect-ratio: 16 / 9;
    background: #000;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 12px 35px var(--shadow);
}

.guide-hero {
    padding: var(--spacing-2xl) 0 var(--spacing-xl);
    background: radial-gradient(1200px 400px at 50% -200px, rgba(56,189,248,0.15), transparent),
                linear-gradient(135deg, var(--bg) 0%, var(--card) 100%);
    border-bottom: 1px solid var(--border);
}

.guide-meta {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    color: var(--muted);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-sm);
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: 999px;
    background: var(--card);
    border: 1px solid var(--border);
    color: var(--muted);
}

.resource-hero {
    padding: var(--spacing-2xl) 0 var(--spacing-xl);
    background:
        radial-gradient(1200px 400px at 50% -220px, rgba(56,189,248,0.18), transparent),
        linear-gradient(135deg, var(--bg) 0%, var(--card) 100%);
    border-bottom: 1px solid var(--border);
}

.news-hero .hero-subtitle,
.events-hero .hero-subtitle {
    color: var(--muted);
}

.resource-content {
    padding: var(--spacing-2xl) 0;
}

.resource-article section + section {
    margin-top: var(--spacing-2xl);
}

.resource-article table {
    width: 100%;
    border-collapse: collapse;
    margin-top: var(--spacing-lg);
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.resource-article table th,
.resource-article table td {
    padding: var(--spacing-sm) var(--spacing-md);
    border-bottom: 1px solid var(--border);
    text-align: left;
    font-size: var(--font-size-sm);
}

.resource-article table thead {
    background: rgba(56,189,248,0.08);
    color: var(--text);
}

.resource-article table tbody tr:nth-child(even) {
    background: rgba(255,255,255,0.02);
}

.resource-article ul {
    padding-left: var(--spacing-lg);
}

.guide-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: var(--spacing-2xl);
}

@media (max-width: 980px) {
    .guide-layout {
        grid-template-columns: 1fr;
    }
}

.guide-toc {
    position: sticky;
    top: 96px;
    align-self: start;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.guide-toc h4 {
    margin: 0 0 var(--spacing-md);
    font-size: var(--font-size-base);
    color: var(--text);
}

.guide-toc ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.guide-toc li { margin: 6px 0; }
.guide-toc a { color: var(--muted); text-decoration: none; }
.guide-toc a:hover { color: var(--accent); }

.prose {
    max-width: 900px;
}

.prose h2 {
    font-size: var(--font-size-2xl);
    margin: var(--spacing-xl) 0 var(--spacing-sm);
}

.prose h3 {
    font-size: var(--font-size-xl);
    margin: var(--spacing-lg) 0 var(--spacing-xs);
}

.prose p { color: var(--muted); margin: 0 0 var(--spacing-md); }
.prose ul, .prose ol { margin: 0 0 var(--spacing-md) var(--spacing-lg); color: var(--text); }
.prose li { margin: 6px 0; }
.prose strong { color: var(--text); }
.prose blockquote { border-left: 4px solid var(--accent); margin: var(--spacing-lg) 0; padding: 8px 16px; color: var(--muted); background: var(--card); border-radius: 0 var(--radius-md) var(--radius-md) 0; }

.callout {
    border: 1px solid var(--border);
    border-left: 4px solid var(--accent);
    background: var(--card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
}

.callout.warning { border-left-color: var(--warn); }
.callout.success { border-left-color: var(--ok); }

.step-list { counter-reset: step; list-style: none; padding: 0; }
.step-list li { position: relative; padding-left: 40px; margin: 10px 0; }
.step-list li::before {
    content: counter(step);
    counter-increment: step;
    position: absolute; left: 0; top: 0;
    width: 28px; height: 28px; border-radius: 50%;
    background: var(--accent); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 13px;
}

.card-grid { display: grid; grid-template-columns: 1fr; gap: var(--spacing-md); }
@media (min-width: 720px) { .card-grid { grid-template-columns: repeat(2, 1fr); } }
.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: var(--spacing-lg); }

.guide-section .video-container iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

.guide-article {
    max-width: 900px;
    margin: 0 auto;
    color: var(--text);
}

.guide-article h3 {
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-sm);
}

.guide-article p {
    color: var(--muted);
}

.tier-hero {
    padding: var(--spacing-2xl) 0 var(--spacing-xl);
    background:
        radial-gradient(1200px 400px at 50% -240px, rgba(14,165,233,0.25), transparent),
        linear-gradient(135deg, var(--bg) 0%, var(--card) 100%);
    border-bottom: 1px solid var(--border);
}

.tier-content {
    padding: var(--spacing-2xl) 0;
}

.tier-article h2 {
    margin-top: 0;
}

.tier-table {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin: var(--spacing-lg) 0;
}

.tier-row {
    display: grid;
    grid-template-columns: 96px 1fr;
    align-items: stretch;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.tier-label {
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    letter-spacing: 0.08em;
    font-size: var(--font-size-lg);
    text-transform: uppercase;
    padding: var(--spacing-md);
    border-right: 1px solid var(--border);
}

.tier-body {
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--text);
}

.tier-label.tier-splus { color: #facc15; }
.tier-label.tier-s { color: #34d399; }
.tier-label.tier-a { color: #38bdf8; }
.tier-label.tier-b { color: #f97316; }
.tier-label.tier-c { color: #f472b6; }
.tier-label.tier-d { color: #c084fc; }

@media (max-width: 720px) {
    .tier-row {
        grid-template-columns: 1fr;
    }

    .tier-label {
        border-right: none;
        border-bottom: 1px solid var(--border);
    }
}

/* FAQ Section */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item:hover {
    border-color: var(--accent);
}

.faq-item summary {
    padding: var(--spacing-lg);
    cursor: pointer;
    font-weight: 600;
    color: var(--text);
    position: relative;
    transition: all 0.3s ease;
}

.faq-item summary:hover {
    color: var(--accent);
}

.faq-item summary::marker {
    display: none;
}

.faq-item summary::after {
    content: '+';
    position: absolute;
    right: var(--spacing-lg);
    top: 50%;
    transform: translateY(-50%);
    font-size: var(--font-size-xl);
    color: var(--accent);
    transition: transform 0.3s ease;
}

.faq-item[open] summary::after {
    transform: translateY(-50%) rotate(45deg);
}

.faq-answer {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    border-top: 1px solid var(--border);
    animation: fadeInDown 0.3s ease;
}

.faq-answer p {
    margin: 0;
    color: var(--muted);
    line-height: 1.6;
}

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

/* Changelog Section */
.changelog-list {
    max-width: 800px;
    margin: 0 auto;
}

.changelog-month {
    margin-bottom: var(--spacing-xl);
}

.changelog-month h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--accent);
    margin: 0 0 var(--spacing-md);
    padding: var(--spacing-sm) 0;
    border-bottom: 2px solid var(--border);
}

.changelog-entries {
    position: relative;
    padding-left: var(--spacing-xl);
}

.changelog-entries::before {
    content: '';
    position: absolute;
    left: var(--spacing-sm);
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border);
}

.changelog-entry {
    position: relative;
    padding-bottom: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.changelog-entry::before {
    content: '';
    position: absolute;
    left: -23px;
    top: 6px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--accent);
    border: 3px solid var(--bg);
}

.changelog-entry:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
}

.changelog-entry:last-child::before {
    background: var(--muted);
}

.changelog-date {
    font-size: var(--font-size-sm);
    color: var(--muted);
    margin-bottom: var(--spacing-xs);
}

.changelog-content {
    color: var(--text);
    line-height: 1.6;
}

.changelog-content strong {
    color: var(--accent);
}

/* Footer */
.footer {
    background: var(--card);
    border-top: 1px solid var(--border);
    padding: var(--spacing-xl) 0;
    margin-top: var(--spacing-2xl);
}

.footer-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

@media (min-width: 768px) {
    .footer-content {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
}

.disclaimer {
    font-size: var(--font-size-sm);
    color: var(--muted);
    margin: 0 0 var(--spacing-sm);
    line-height: 1.5;
}

.footer-meta {
    font-size: var(--font-size-sm);
    color: var(--muted);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    align-items: flex-start;
}

@media (min-width: 768px) {
    .footer-links {
        align-items: flex-end;
    }
}

.social-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--muted);
}

.social-links a {
    color: var(--muted);
    transition: color 0.3s ease;
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 32px;
    min-height: 32px;
}

.social-links a:hover {
    color: var(--accent);
    background: var(--bg);
}

.quick-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    flex-wrap: wrap;
    row-gap: 6px;
}

.quick-links a {
    color: var(--muted);
    text-decoration: none;
    transition: color 0.3s ease;
    padding: var(--spacing-xs);
    white-space: nowrap;
}

.quick-links a:hover {
    color: var(--accent);
}

.separator { display: none; }

/* Copy Toast */
.copy-toast {
    position: fixed;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--ok);
    color: white;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-lg);
    font-weight: 600;
    z-index: 2000;
    transition: transform 0.3s ease;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.copy-toast.show {
    transform: translateX(-50%) translateY(0);
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--overlay);
    z-index: 3000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.modal-content {
    background: var(--card);
    border-radius: var(--radius-lg);
    max-width: 600px;
    width: 100%;
    max-height: 80vh;
    overflow-y: auto;
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border);
}

.modal-header h3 {
    margin: 0;
    color: var(--text);
}

.modal-close {
    background: none;
    border: none;
    font-size: var(--font-size-xl);
    color: var(--muted);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    min-width: 32px;
    min-height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    color: var(--text);
    background: var(--bg);
}

.modal-body {
    padding: var(--spacing-lg);
}

.modal-body textarea {
    width: 100%;
    height: 200px;
    padding: var(--spacing-sm);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg);
    color: var(--text);
    font-family: 'Courier New', monospace;
    font-size: var(--font-size-sm);
    resize: vertical;
    margin: var(--spacing-md) 0;
}

/* Admin Mode */
.admin-toggle {
    font-size: var(--font-size-sm);
    color: var(--muted);
}

.admin-toggle label {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    cursor: pointer;
}

.admin-toggle input {
    accent-color: var(--accent);
}

/* Accessibility & Focus States */
*:focus {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

button:focus,
select:focus,
input:focus,
textarea:focus {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.btn:focus {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* Utility Classes */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.highlight {
    background: rgba(56, 189, 248, 0.2);
    padding: 0 2px;
    border-radius: 3px;
}

/* Loading Animation */
.loading {
    opacity: 0;
    animation: fadeIn 0.5s ease forwards;
}

@keyframes fadeIn {
    to {
        opacity: 1;
    }
}

/* Responsive Design */
@media (max-width: 767px) {
    .nav-card-button {
        display: none;
    }

    .nav-card {
        position: fixed;
        top: 72px;
        left: var(--spacing-sm);
        right: var(--spacing-sm);
        width: auto;
        max-height: calc(100vh - 96px);
        overflow-y: auto;
        transform: translateY(0);
        border-radius: var(--radius-lg);
        border: 1px solid var(--border);
        box-shadow: 0 16px 32px rgba(15, 23, 42, 0.35);
    }

    .nav-card-inner {
        padding: var(--spacing-lg);
    }

    .nav-menu {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }

    .nav-menu a {
        font-size: var(--font-size-base);
        padding: var(--spacing-md);
    }

    .hero-title {
        font-size: var(--font-size-2xl);
    }
    
    section {
        padding: var(--spacing-xl) 0;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .code-actions {
        flex-direction: column;
    }
    
    .method-steps li {
        padding-left: var(--spacing-lg);
    }
    
    .method-steps li:before {
        width: 20px;
        height: 20px;
        font-size: var(--font-size-xs);
    }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    :root {
        --border: currentColor;
        --shadow: rgba(0, 0, 0, 0.5);
    }
    
    .btn {
        border: 2px solid currentColor;
    }
    
    .code-card {
        border-width: 2px;
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}
.download-hero {
    padding: var(--spacing-2xl) 0 var(--spacing-xl);
    background: radial-gradient(1000px 360px at 50% -180px, rgba(56,189,248,0.15), transparent),
                linear-gradient(135deg, var(--bg) 0%, var(--card) 100%);
    border-bottom: 1px solid var(--border);
    text-align: center;
}

.app-mark {
    width: 72px;
    height: 72px;
    border-radius: 20px;
    background: var(--card);
    border: 1px solid var(--border);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    box-shadow: 0 12px 35px var(--shadow);
}

.store-badges-row {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    margin-top: var(--spacing-lg);
}

.store-badge img.badge-img {
    height: 60px;
    width: auto;
    display: block;
}

.feature-cards {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin-top: var(--spacing-2xl);
}

@media (min-width: 760px) { .feature-cards { grid-template-columns: repeat(3, 1fr); } }

.feature-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: var(--spacing-lg); }
.feature-card h4 { margin: 0 0 6px; }
.feature-card p { margin: 0; color: var(--muted); }