/* 
 * Policy Pages Styling
 * Mobile-first, performance-optimized design
 * Dark mode support with smooth transitions
 */

/* ===========================
   CSS Variables & Theme System
   =========================== */
:root {
    /* Light Theme Colors */
    --bg-primary: #f8f7f4;
    --bg-secondary: #ffffff;
    --bg-tertiary: #e8e6e1;
    --bg-accent: #f0ede6;
    
    --text-primary: #1a1613;
    --text-secondary: #4a4642;
    --text-tertiary: #6b6762;
    --text-link: #d97706;
    --text-link-hover: #b45309;
    
    --border-color: #d4d1cc;
    --border-light: #e8e6e1;
    
    --accent-primary: #d97706;
    --accent-secondary: #0ea5e9;
    --accent-success: #10b981;
    --accent-warning: #f59e0b;
    --accent-danger: #ef4444;
    
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.12);
    
    /* Typography */
    --font-sans: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Monaco', 'Courier New', monospace;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 20px;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Theme */
[data-theme="dark"] {
    --bg-primary: #0f0e0d;
    --bg-secondary: #1a1816;
    --bg-tertiary: #252320;
    --bg-accent: #2d2a26;
    
    --text-primary: #f8f7f4;
    --text-secondary: #c7c4be;
    --text-tertiary: #9e9b96;
    --text-link: #fb923c;
    --text-link-hover: #fdba74;
    
    --border-color: #3a3733;
    --border-light: #2d2a26;
    
    --accent-primary: #fb923c;
    --accent-secondary: #38bdf8;
    --accent-success: #34d399;
    --accent-warning: #fbbf24;
    --accent-danger: #f87171;
    
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.5);
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-weight: 400;
    line-height: 1.7;
    color: var(--text-primary);
    background: var(--bg-primary);
    transition: background-color var(--transition-base), color var(--transition-base);
    min-height: 100vh;
    overflow-x: hidden;
}

/* ===========================
   Theme Toggle Button
   =========================== */
.theme-toggle {
    position: fixed;
    top: 1.5rem;
    right: 1.5rem;
    width: 48px;
    height: 48px;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-xl);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.theme-toggle:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-primary);
}

.theme-toggle:active {
    transform: scale(0.95);
}

.theme-toggle svg {
    width: 22px;
    height: 22px;
    color: var(--text-primary);
    transition: all var(--transition-base);
}

.sun-icon {
    display: block;
}

.moon-icon {
    display: none;
}

[data-theme="dark"] .sun-icon {
    display: none;
}

[data-theme="dark"] .moon-icon {
    display: block;
}

/* ===========================
   Language Switcher
   =========================== */
.language-switcher {
    position: fixed;
    top: 1.5rem;
    right: 5.5rem;
    display: flex;
    gap: 0.5rem;
    z-index: 1000;
}

.lang-button {
    padding: 0.5rem 1rem;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    font-family: var(--font-sans);
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.lang-button:hover {
    border-color: var(--accent-primary);
    color: var(--text-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.lang-button.active {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: white;
}

.lang-button:active {
    transform: scale(0.95);
}

/* ===========================
   Container & Layout
   =========================== */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--space-lg) var(--space-md);
}

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

/* ===========================
   Policy Header
   =========================== */
.policy-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
    padding: var(--space-xl) 0;
    border-bottom: 2px solid var(--border-light);
}

.app-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    background: var(--bg-secondary);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--space-md);
    border: 1px solid var(--border-light);
}

.badge-icon {
    font-size: 2rem;
    line-height: 1;
}

.badge-title {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.badge-subtitle {
    font-size: 0.85rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 500;
}

.policy-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    color: var(--text-primary);
    margin: var(--space-md) 0;
    letter-spacing: -0.03em;
    line-height: 1.1;
}

.policy-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
    font-size: 0.9rem;
    color: var(--text-tertiary);
    margin-top: var(--space-md);
}

.meta-item {
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

.meta-divider {
    color: var(--border-color);
}

.policy-nav {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-top: var(--space-lg);
}

.nav-link {
    display: inline-flex;
    align-items: center;
    padding: var(--space-xs) var(--space-md);
    background: var(--bg-accent);
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-weight: 500;
    border: 1px solid var(--border-light);
    transition: all var(--transition-base);
}

.nav-link:hover {
    background: var(--bg-secondary);
    color: var(--accent-primary);
    border-color: var(--accent-primary);
    transform: translateY(-1px);
}

/* ===========================
   Content Wrapper (Sidebar + Main)
   =========================== */
.content-wrapper {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    margin-top: var(--space-xl);
}

@media (min-width: 1024px) {
    .content-wrapper {
        grid-template-columns: 280px 1fr;
        gap: var(--space-2xl);
    }
}

/* ===========================
   Table of Contents (Sidebar)
   =========================== */
.table-of-contents {
    background: var(--bg-secondary);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
    height: fit-content;
}

@media (min-width: 1024px) {
    .table-of-contents {
        position: sticky;
        top: var(--space-lg);
    }
}

.toc-title {
    font-size: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--border-light);
}

.toc-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.toc-list li {
    border-left: 2px solid var(--border-light);
    padding-left: var(--space-sm);
    transition: border-color var(--transition-fast);
}

.toc-list li:hover {
    border-left-color: var(--accent-primary);
}

.toc-list a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    padding: var(--space-xs) 0;
    transition: all var(--transition-fast);
    font-weight: 500;
}

.toc-list a:hover {
    color: var(--accent-primary);
    padding-left: var(--space-xs);
}

/* ===========================
   Main Content
   =========================== */
.policy-content {
    background: var(--bg-secondary);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-md);
}

@media (max-width: 767px) {
    .policy-content {
        padding: var(--space-md);
    }
    
    .language-switcher {
        top: 5.5rem;
        right: 1rem;
        flex-direction: column;
        gap: 0.25rem;
    }
    
    .lang-button {
        padding: 0.4rem 0.8rem;
        font-size: 0.8rem;
        min-width: 80px;
    }
    
    .theme-toggle {
        top: 1rem;
        right: 1rem;
        width: 40px;
        height: 40px;
    }
}

.policy-section {
    margin-bottom: var(--space-2xl);
    scroll-margin-top: var(--space-xl);
}

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

/* Typography */
.policy-section h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    letter-spacing: -0.02em;
    line-height: 1.2;
    padding-bottom: var(--space-sm);
    border-bottom: 3px solid var(--accent-primary);
    display: inline-block;
}

.policy-section h3 {
    font-size: clamp(1.15rem, 2vw, 1.4rem);
    font-weight: 600;
    color: var(--text-primary);
    margin: var(--space-lg) 0 var(--space-md) 0;
    letter-spacing: -0.01em;
}

.policy-section h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin: var(--space-md) 0 var(--space-sm) 0;
}

.policy-section p {
    margin-bottom: var(--space-md);
    color: var(--text-secondary);
    line-height: 1.8;
}

.policy-section ul {
    margin: var(--space-md) 0;
    padding-left: var(--space-lg);
}

.policy-section li {
    margin-bottom: var(--space-sm);
    color: var(--text-secondary);
    line-height: 1.7;
}

.policy-section li::marker {
    color: var(--accent-primary);
}

.policy-section strong {
    color: var(--text-primary);
    font-weight: 600;
}

.policy-section a {
    color: var(--text-link);
    text-decoration: none;
    font-weight: 500;
    transition: all var(--transition-fast);
    border-bottom: 1px solid transparent;
}

.policy-section a:hover {
    color: var(--text-link-hover);
    border-bottom-color: var(--text-link-hover);
}

/* ===========================
   Highlight Boxes
   =========================== */
.highlight-box {
    background: linear-gradient(135deg, var(--bg-accent) 0%, var(--bg-tertiary) 100%);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--accent-primary);
    margin: var(--space-lg) 0;
    box-shadow: var(--shadow-sm);
}

.highlight-box.warning {
    background: linear-gradient(135deg, rgba(251, 146, 60, 0.1) 0%, rgba(251, 146, 60, 0.05) 100%);
    border-left-color: var(--accent-warning);
}

.highlight-box strong {
    display: block;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
    font-size: 1.05rem;
}

.highlight-box p {
    margin-bottom: var(--space-sm);
}

.highlight-box p:last-child {
    margin-bottom: 0;
}

.highlight-box ul {
    margin-top: var(--space-sm);
    margin-bottom: 0;
}

/* ===========================
   Contact Card
   =========================== */
.contact-card {
    background: var(--bg-accent);
    padding: var(--space-lg);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-light);
    margin: var(--space-md) 0;
}

.contact-card h3 {
    margin-top: 0;
    margin-bottom: var(--space-sm);
    color: var(--accent-primary);
}

.contact-card p {
    margin-bottom: var(--space-sm);
}

.contact-card p:last-child {
    margin-bottom: 0;
}

/* ===========================
   Policy Footer Note
   =========================== */
.policy-footer-note {
    margin-top: var(--space-2xl);
    padding-top: var(--space-lg);
    border-top: 2px solid var(--border-light);
}

.policy-footer-note h3,
.policy-footer-note h4 {
    margin-top: var(--space-lg);
}

.policy-footer-note h3:first-child,
.policy-footer-note h4:first-child {
    margin-top: 0;
}

.policy-footer-note .divider {
    margin: var(--space-xl) 0;
    border: none;
    border-top: 1px solid var(--border-light);
}

/* ===========================
   Footer
   =========================== */
.policy-footer {
    margin-top: var(--space-2xl);
    padding: var(--space-xl) 0;
    border-top: 2px solid var(--border-light);
    text-align: center;
}

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

.footer-links {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--space-md);
    font-size: 0.95rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
}

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

.footer-links span {
    color: var(--text-tertiary);
}

.footer-copyright {
    color: var(--text-tertiary);
    font-size: 0.9rem;
    margin: 0;
}

/* ===========================
   Animations
   =========================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.policy-section {
    animation: fadeIn var(--transition-slow) ease-out;
}

/* ===========================
   Print Styles
   =========================== */
@media print {
    .theme-toggle,
    .policy-nav,
    .table-of-contents,
    .policy-footer {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .policy-content {
        box-shadow: none;
        border: none;
    }
    
    .policy-section {
        page-break-inside: avoid;
    }
    
    a {
        color: black;
        text-decoration: underline;
    }
}

/* ===========================
   Accessibility
   =========================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

/* ===========================
   Selection
   =========================== */
::selection {
    background: var(--accent-primary);
    color: white;
}

::-moz-selection {
    background: var(--accent-primary);
    color: white;
}

/* ===========================
   Scrollbar
   =========================== */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-primary);
}

/* ===========================
   Mobile Optimizations
   =========================== */
@media (max-width: 767px) {
    .policy-title {
        font-size: 2rem;
    }
    
    .app-badge {
        flex-direction: column;
        text-align: center;
    }
    
    .policy-meta {
        font-size: 0.85rem;
    }
    
    .table-of-contents {
        display: none;
    }
    
    .theme-toggle {
        top: 1rem;
        right: 1rem;
        width: 44px;
        height: 44px;
    }
}

/* ===========================
   Performance Optimizations
   =========================== */
.policy-content img {
    max-width: 100%;
    height: auto;
    display: block;
}

.policy-content video {
    max-width: 100%;
    height: auto;
}

/* GPU Acceleration */
.theme-toggle,
.nav-link,
.toc-list a {
    will-change: transform;
}