/* ==========================================
   JuiceAi - Main Styles
   Design: Editorial Minimalism (Claude.ai style)
   With Dark Theme Support & Mobile Optimization
   ========================================== */

/* CSS Variables - Light Theme (default) */
:root {
    /* Colors - Warm, sophisticated palette */
    --color-bg: #FFFCF9;
    --color-bg-alt: #FBF8F4;
    --color-bg-elevated: #FFFFFF;
    --color-bg-hover: #F7F3EE;
    
    --color-text-primary: #1A1612;
    --color-text-secondary: #5C5550;
    --color-text-tertiary: #8A8480;
    --color-text-muted: #B5B0AA;
    
    --color-border: #E8E4DE;
    --color-border-light: #F0ECE6;
    --color-border-dark: #D4CFC8;
    
    /* Accent colors */
    --color-primary: #D97706;
    --color-primary-hover: #B45309;
    --color-primary-light: #FEF3C7;
    --color-primary-bg: #FFFBEB;
    
    --color-success: #059669;
    --color-success-light: #D1FAE5;
    --color-warning: #D97706;
    --color-warning-light: #FEF3C7;
    --color-error: #DC2626;
    --color-error-light: #FEE2E2;
    --color-info: #2563EB;
    --color-info-light: #DBEAFE;
    
    /* Model colors */
    --color-fast: #10B981;
    --color-pro: #8B5CF6;
    --color-coder: #3B82F6;
    
    /* Navbar background */
    --navbar-bg: rgba(255, 252, 249, 0.85);
    --navbar-bg-scrolled: rgba(255, 252, 249, 0.95);
    
    /* Code block */
    --code-bg: #1E1E1E;
    --code-header-bg: #2D2D2D;
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;
    
    --leading-tight: 1.25;
    --leading-normal: 1.5;
    --leading-relaxed: 1.625;
    
    --tracking-tight: -0.025em;
    --tracking-normal: 0;
    --tracking-wide: 0.025em;
    
    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    
    /* Border radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 10px 10px -5px rgba(0, 0, 0, 0.03);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
    --transition-theme: 400ms ease;
    
    /* Z-index */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-modal: 300;
    --z-toast: 400;
}

/* Dark Theme */
[data-theme="dark"] {
    --color-bg: #0F0F0F;
    --color-bg-alt: #1A1A1A;
    --color-bg-elevated: #242424;
    --color-bg-hover: #2A2A2A;
    
    --color-text-primary: #F5F5F5;
    --color-text-secondary: #A0A0A0;
    --color-text-tertiary: #707070;
    --color-text-muted: #505050;
    
    --color-border: #333333;
    --color-border-light: #2A2A2A;
    --color-border-dark: #444444;
    
    --color-primary: #F59E0B;
    --color-primary-hover: #FBBF24;
    --color-primary-light: #422006;
    --color-primary-bg: #1C1917;
    
    --color-success-light: #064E3B;
    --color-warning-light: #422006;
    --color-error-light: #450A0A;
    --color-info-light: #1E3A8A;
    
    --navbar-bg: rgba(15, 15, 15, 0.85);
    --navbar-bg-scrolled: rgba(15, 15, 15, 0.95);
    
    --code-bg: #0A0A0A;
    --code-header-bg: #1A1A1A;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
}

/* Reset & Base */
*, *::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-size: var(--text-base);
    line-height: var(--leading-normal);
    color: var(--color-text-primary);
    background-color: var(--color-bg);
    min-height: 100vh;
    transition: background-color var(--transition-theme), color var(--transition-theme);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: var(--leading-tight);
    letter-spacing: var(--tracking-tight);
    color: var(--color-text-primary);
}

h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }
h6 { font-size: var(--text-base); }

p {
    color: var(--color-text-secondary);
    line-height: var(--leading-relaxed);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

strong { font-weight: 600; }

code {
    font-family: var(--font-mono);
    font-size: 0.9em;
    background: var(--color-bg-alt);
    padding: 0.125em 0.375em;
    border-radius: var(--radius-sm);
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

@media (max-width: 768px) {
    .container { padding: 0 var(--space-4); }
}

/* ==========================================
   Navigation
   ========================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 72px;
    background: var(--navbar-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border-light);
    z-index: var(--z-sticky);
    transition: all var(--transition-base);
}

.navbar.scrolled {
    background: var(--navbar-bg-scrolled);
    box-shadow: var(--shadow-sm);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.nav-controls {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-left: auto;
    margin-right: var(--space-3);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-text-primary);
    font-weight: 600;
    font-size: var(--text-lg);
    text-decoration: none;
}

.nav-logo:hover { color: var(--color-text-primary); }

.logo-icon {
    width: 32px;
    height: 32px;
    color: var(--color-primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.nav-link {
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    font-weight: 500;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.nav-link:hover { color: var(--color-text-primary); }

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

/* Icon Button (Theme Toggle, Language) - No border */
.icon-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: transparent;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
    font-size: 1.25rem;
}

.icon-btn:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.icon-btn svg { width: 20px; height: 20px; }
.icon-btn .sun-icon { display: none; }
.icon-btn .moon-icon { display: block; }
[data-theme="dark"] .icon-btn .sun-icon { display: block; }
[data-theme="dark"] .icon-btn .moon-icon { display: none; }

/* Language Button */
.lang-btn {
    font-size: 1.25rem;
}

/* Language Selector */
.lang-selector { position: relative; }

.lang-selector-btn {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background: transparent;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.lang-selector-btn:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.lang-selector-btn svg { width: 16px; height: 16px; }

.lang-dropdown {
    position: absolute;
    top: calc(100% + var(--space-2));
    right: 0;
    min-width: 140px;
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all var(--transition-fast);
    z-index: var(--z-dropdown);
}

.lang-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.lang-option:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.lang-option.active {
    color: var(--color-primary);
    font-weight: 500;
}

.lang-option:first-child { border-radius: var(--radius-lg) var(--radius-lg) 0 0; }
.lang-option:last-child { border-radius: 0 0 var(--radius-lg) var(--radius-lg); }

/* User Menu */
.nav-user { position: relative; }
.user-menu { position: relative; }

.user-menu-trigger {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.user-menu-trigger:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-border-dark);
}

.user-avatar {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-full);
    background: var(--color-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-sm);
    font-weight: 600;
}

.user-name {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-primary);
}

.chevron-icon {
    width: 16px;
    height: 16px;
    color: var(--color-text-tertiary);
    transition: transform var(--transition-fast);
}

.user-menu-trigger[aria-expanded="true"] .chevron-icon {
    transform: rotate(180deg);
}

.user-dropdown {
    position: absolute;
    top: calc(100% + var(--space-2));
    right: 0;
    min-width: 200px;
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all var(--transition-fast);
    z-index: var(--z-dropdown);
}

.user-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.dropdown-item:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.dropdown-item svg { width: 18px; height: 18px; }
.dropdown-item-danger { color: var(--color-error); }
.dropdown-item-danger:hover {
    background: var(--color-error-light);
    color: var(--color-error);
}

.dropdown-divider {
    height: 1px;
    background: var(--color-border-light);
    margin: var(--space-2) 0;
}

/* Mobile Navigation */
.nav-mobile-toggle {
    display: none;
    padding: var(--space-2);
    background: transparent;
    border: none;
    cursor: pointer;
}

.nav-mobile-toggle svg {
    width: 24px;
    height: 24px;
    color: var(--color-text-primary);
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-bg);
    padding: var(--space-6);
    z-index: var(--z-sticky);
    overflow-y: auto;
    animation: slideDown 0.3s ease;
}

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

.mobile-menu.active { display: block; }

.mobile-menu-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    margin-bottom: var(--space-8);
}

.mobile-menu-link {
    display: block;
    padding: var(--space-4);
    color: var(--color-text-primary);
    font-size: var(--text-lg);
    font-weight: 500;
    text-decoration: none;
    border-radius: var(--radius-lg);
    transition: background var(--transition-fast);
}

.mobile-menu-link:hover { background: var(--color-bg-hover); }

.mobile-menu-actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.mobile-menu-footer {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-4);
    margin-top: var(--space-8);
    padding-top: var(--space-6);
    border-top: 1px solid var(--color-border-light);
}

@media (max-width: 768px) {
    .nav-links, .nav-actions { display: none; }
    .nav-mobile-toggle { display: block; }
    .nav-container { padding: 0 var(--space-4); }
}

/* ==========================================
   Hero Section
   ========================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: calc(72px + var(--space-16)) 0 var(--space-16);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    inset: 0;
    z-index: -1;
}

.hero-gradient {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 80% 50% at 50% -20%, rgba(217, 119, 6, 0.08), transparent);
}

[data-theme="dark"] .hero-gradient {
    background: radial-gradient(ellipse 80% 50% at 50% -20%, rgba(245, 158, 11, 0.15), transparent);
}

.hero-pattern {
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle at 1px 1px, var(--color-border-light) 1px, transparent 0);
    background-size: 40px 40px;
    opacity: 0.5;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: center;
}

.hero-content { max-width: 560px; }
.hero-badge { margin-bottom: var(--space-6); }

.hero-title {
    font-size: var(--text-5xl);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--space-6);
    letter-spacing: -0.03em;
}

.text-gradient {
    background: linear-gradient(135deg, var(--color-primary) 0%, #F59E0B 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-8);
    line-height: var(--leading-relaxed);
}

.hero-actions {
    display: flex;
    gap: var(--space-4);
    margin-bottom: var(--space-12);
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: var(--space-8);
    flex-wrap: wrap;
}

.stat { text-align: center; }

.stat-value {
    display: block;
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-text-primary);
}

.stat-label {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--color-border);
}

.hero-visual { display: flex; justify-content: center; }

/* Code Preview */
.code-preview {
    width: 100%;
    max-width: 520px;
    background: var(--code-bg);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.code-header {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-3) var(--space-4);
    background: var(--code-header-bg);
    border-bottom: 1px solid #3D3D3D;
}

.code-dots { display: flex; gap: var(--space-2); }

.code-dots span {
    width: 12px;
    height: 12px;
    border-radius: var(--radius-full);
    background: #3D3D3D;
}

.code-dots span:nth-child(1) { background: #FF5F56; }
.code-dots span:nth-child(2) { background: #FFBD2E; }
.code-dots span:nth-child(3) { background: #27CA40; }

.code-title {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    color: #9D9D9D;
}

.code-content {
    padding: var(--space-4);
    margin: 0;
    overflow-x: auto;
    background: var(--code-bg);
}

.code-content code {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    line-height: 1.6;
    color: #D4D4D4;
    background: none !important;
    padding: 0;
    white-space: pre;
    border-radius: 0;
}

/* Fix for whitespace in dark theme */
.code-content pre {
    background: none !important;
    margin: 0;
}

/* Ensure code inside code-preview has no background */
.code-preview code,
.code-preview pre,
.code-panel code,
.code-panel pre {
    background: none !important;
    background-color: transparent !important;
}

.code-keyword { color: #C586C0; }
.code-string { color: #CE9178; }
.code-number { color: #B5CEA8; }
.code-comment { color: #6A9955; }

@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero-content { max-width: 100%; }
    .hero-actions { justify-content: center; }
    .hero-stats { justify-content: center; }
    .hero-visual { order: -1; }
    .code-preview { max-width: 100%; }
}

@media (max-width: 768px) {
    .hero {
        padding-top: calc(72px + var(--space-8));
        min-height: auto;
        padding-bottom: var(--space-12);
    }
    .hero-title { font-size: var(--text-3xl); }
    .hero-description { font-size: var(--text-base); }
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    .hero-actions .btn {
        width: 100%;
        max-width: 300px;
    }
    .hero-stats { gap: var(--space-4); }
    .stat-divider { display: none; }
}

/* ==========================================
   Sections
   ========================================== */
.section { padding: var(--space-24) 0; }
.section-alt { background: var(--color-bg-alt); }

.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto var(--space-16);
}

.section-title {
    font-size: var(--text-3xl);
    margin-bottom: var(--space-4);
}

.section-description {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
}

@media (max-width: 768px) {
    .section { padding: var(--space-16) 0; }
    .section-header { margin-bottom: var(--space-10); }
    .section-title { font-size: var(--text-2xl); }
    .section-description { font-size: var(--text-base); }
}

/* ==========================================
   Features Grid
   ========================================== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
}

.feature-card {
    padding: var(--space-8);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.feature-card:hover {
    border-color: var(--color-border);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.feature-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary-bg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-4);
}

.feature-icon svg {
    width: 24px;
    height: 24px;
    color: var(--color-primary);
}

.feature-title {
    font-size: var(--text-lg);
    margin-bottom: var(--space-2);
}

.feature-description {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

@media (max-width: 1024px) {
    .features-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
    .features-grid { grid-template-columns: 1fr; }
    .feature-card { padding: var(--space-6); }
}

/* ==========================================
   Models Grid
   ========================================== */
.models-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
}

.model-card {
    padding: var(--space-8);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.model-card:hover {
    border-color: var(--color-border);
    box-shadow: var(--shadow-lg);
}

.model-card-featured {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 1px var(--color-primary);
}

.model-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-4);
}

.model-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
}

.model-icon svg {
    width: 24px;
    height: 24px;
}

.model-icon-fast {
    background: rgba(16, 185, 129, 0.1);
    color: var(--color-fast);
}

.model-icon-pro {
    background: rgba(139, 92, 246, 0.1);
    color: var(--color-pro);
}

.model-icon-coder {
    background: rgba(59, 130, 246, 0.1);
    color: var(--color-coder);
}

.model-badge {
    font-size: var(--text-xs);
    font-weight: 600;
    padding: var(--space-1) var(--space-3);
    background: var(--color-bg-alt);
    border-radius: var(--radius-full);
    color: var(--color-text-secondary);
}

.model-badge-pro {
    background: rgba(139, 92, 246, 0.1);
    color: var(--color-pro);
}

.model-badge-coder {
    background: rgba(59, 130, 246, 0.1);
    color: var(--color-coder);
}

.model-name {
    font-size: var(--text-xl);
    margin-bottom: var(--space-3);
}

.model-description {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-6);
}

.model-features {
    list-style: none;
    margin-bottom: var(--space-6);
}

.model-features li {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-2);
}

.model-features svg {
    width: 16px;
    height: 16px;
    color: var(--color-success);
    flex-shrink: 0;
}

.model-id {
    display: block;
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    padding: var(--space-2) var(--space-3);
    background: var(--color-bg-alt);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
}

@media (max-width: 1024px) {
    .models-grid {
        grid-template-columns: 1fr;
        max-width: 480px;
        margin: 0 auto;
    }
}

/* ==========================================
   Pricing Grid
   ========================================== */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-card {
    position: relative;
    padding: var(--space-8);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.pricing-card:hover {
    border-color: var(--color-border);
    box-shadow: var(--shadow-lg);
}

.pricing-card-featured {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 1px var(--color-primary);
}

.pricing-popular {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translate(-50%, -50%);
    padding: var(--space-1) var(--space-4);
    background: var(--color-primary);
    color: white;
    font-size: var(--text-xs);
    font-weight: 600;
    border-radius: var(--radius-full);
}

.pricing-header {
    text-align: center;
    padding-bottom: var(--space-6);
    border-bottom: 1px solid var(--color-border-light);
    margin-bottom: var(--space-6);
}

.pricing-name {
    font-size: var(--text-xl);
    margin-bottom: var(--space-2);
}

.pricing-price { margin-bottom: var(--space-2); }

.price-amount {
    font-size: var(--text-4xl);
    font-weight: 700;
    color: var(--color-text-primary);
}

.price-period {
    font-size: var(--text-base);
    color: var(--color-text-tertiary);
}

.pricing-description {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
}

.pricing-features {
    list-style: none;
    margin-bottom: var(--space-8);
}

.pricing-features li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-3);
}

.pricing-features svg {
    width: 18px;
    height: 18px;
    color: var(--color-success);
    flex-shrink: 0;
    margin-top: 1px;
}

@media (max-width: 1024px) {
    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
    }
}

/* ==========================================
   Docs Section
   ========================================== */
.docs-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
    margin-bottom: var(--space-12);
}

.docs-card {
    text-align: center;
    padding: var(--space-8);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-xl);
}

.docs-step {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-4);
    background: var(--color-primary);
    color: white;
    font-size: var(--text-xl);
    font-weight: 700;
    border-radius: var(--radius-full);
}

.docs-card h3 {
    font-size: var(--text-lg);
    margin-bottom: var(--space-2);
}

.docs-card p {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

.docs-example {
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.docs-example h3 {
    padding: var(--space-4) var(--space-6);
    border-bottom: 1px solid var(--color-border-light);
    font-size: var(--text-base);
}

.code-tabs {
    display: flex;
    gap: var(--space-1);
    padding: var(--space-2) var(--space-4);
    background: var(--color-bg-alt);
    border-bottom: 1px solid var(--color-border-light);
    overflow-x: auto;
}

.code-tab {
    padding: var(--space-2) var(--space-4);
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.code-tab:hover { color: var(--color-text-primary); }

.code-tab.active {
    background: var(--color-bg-elevated);
    color: var(--color-text-primary);
    box-shadow: var(--shadow-sm);
}

.code-panels { background: var(--code-bg); }

.code-panel {
    display: none;
    padding: var(--space-4);
}

.code-panel.active { display: block; }

.code-panel pre {
    margin: 0;
    overflow-x: auto;
}

.code-panel code {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    line-height: 1.6;
    color: #D4D4D4;
    background: transparent;
    padding: 0;
}

@media (max-width: 768px) {
    .docs-grid { grid-template-columns: 1fr; }
}

/* ==========================================
   CTA Section
   ========================================== */
.cta-section {
    background: linear-gradient(135deg, var(--color-primary-bg) 0%, var(--color-bg) 100%);
}

.cta-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: var(--text-3xl);
    margin-bottom: var(--space-4);
}

.cta-content p {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-8);
}

/* ==========================================
   Footer
   ========================================== */
.footer {
    background: var(--color-bg-alt);
    border-top: 1px solid var(--color-border-light);
    padding: var(--space-12) 0;
    margin-top: auto;
}

#mainContent {
    flex: 1;
    display: flex;
    flex-direction: column;
}

body {
    display: flex;
    flex-direction: column;
}

.footer .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-content {
    display: none;
}

.footer-brand p {
    margin-top: var(--space-4);
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
    max-width: 280px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
}

.footer-column h4 {
    font-size: var(--text-sm);
    font-weight: 600;
    margin-bottom: var(--space-4);
    color: var(--color-text-primary);
}

.footer-column a {
    display: block;
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-2);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.footer-bottom p {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
    margin: 0;
}

.footer-legal {
    display: flex;
    gap: var(--space-6);
}

.footer-legal a {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
}

.footer-legal a:hover { color: var(--color-text-secondary); }

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }
    .footer-links { grid-template-columns: repeat(2, 1fr); }
    .footer-bottom {
        flex-direction: column;
        gap: var(--space-4);
        text-align: center;
    }
}

/* ==========================================
   Modal
   ========================================== */
.modal {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    width: 100%;
    max-width: 440px;
    max-height: 90vh;
    overflow-y: auto;
    background: var(--color-bg-elevated);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    margin: var(--space-4);
    transform: scale(0.95) translateY(20px);
    transition: transform var(--transition-base);
}

.modal.active .modal-content {
    transform: scale(1) translateY(0);
}

.modal-content-sm { max-width: 400px; }

.modal-close {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    color: var(--color-text-tertiary);
    transition: all var(--transition-fast);
}

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

.modal-close svg { width: 20px; height: 20px; }

/* ==========================================
   Auth Forms
   ========================================== */
.auth-form { padding: var(--space-8); }

.auth-header {
    text-align: center;
    margin-bottom: var(--space-8);
}

.auth-header h2 {
    font-size: var(--text-2xl);
    margin-bottom: var(--space-2);
}

.auth-header p {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

.auth-footer {
    text-align: center;
    margin-top: var(--space-6);
    padding-top: var(--space-6);
    border-top: 1px solid var(--color-border-light);
}

.auth-footer p {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

.auth-footer a { font-weight: 500; }

/* ==========================================
   API Key Modal
   ========================================== */
.api-key-success {
    padding: var(--space-8);
    text-align: center;
}

.success-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-4);
    background: var(--color-success-light);
    border-radius: var(--radius-full);
}

.success-icon svg {
    width: 32px;
    height: 32px;
    color: var(--color-success);
}

.api-key-success h2 {
    font-size: var(--text-2xl);
    margin-bottom: var(--space-2);
}

.api-key-success > p {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-4);
}

.api-key-display {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3);
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-4);
}

.api-key-display code {
    flex: 1;
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    color: var(--color-text-primary);
    background: transparent;
    padding: 0;
    word-break: break-all;
}

.api-key-warning {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3);
    background: var(--color-warning-light);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-6);
}

.api-key-warning svg {
    width: 20px;
    height: 20px;
    color: var(--color-warning);
    flex-shrink: 0;
}

.api-key-warning span {
    font-size: var(--text-sm);
    color: var(--color-warning);
    text-align: left;
}

/* ==========================================
   Toast Notifications
   ========================================== */
.toast-container {
    position: fixed;
    bottom: var(--space-6);
    right: var(--space-6);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    z-index: var(--z-toast);
}

@media (max-width: 768px) {
    .toast-container {
        left: var(--space-4);
        right: var(--space-4);
        bottom: var(--space-4);
    }
}

.toast {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    min-width: 300px;
    max-width: 400px;
    animation: slideIn var(--transition-base) ease;
}

@media (max-width: 768px) {
    .toast {
        min-width: auto;
        max-width: none;
    }
}

.toast-success { border-color: var(--color-success); }
.toast-error { border-color: var(--color-error); }
.toast-warning { border-color: var(--color-warning); }

.toast-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.toast-success .toast-icon { color: var(--color-success); }
.toast-error .toast-icon { color: var(--color-error); }
.toast-warning .toast-icon { color: var(--color-warning); }

.toast-message {
    flex: 1;
    font-size: var(--text-sm);
    color: var(--color-text-primary);
}

.toast-close {
    padding: var(--space-1);
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--color-text-tertiary);
    transition: color var(--transition-fast);
}

.toast-close:hover { color: var(--color-text-primary); }
.toast-close svg { width: 16px; height: 16px; }

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@media (max-width: 768px) {
    @keyframes slideIn {
        from {
            opacity: 0;
            transform: translateY(100%);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
}

/* ==========================================
   Utility Classes
   ========================================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.hidden { display: none !important; }
.visible { display: block !important; }

.mt-4 { margin-top: var(--space-4); }
.mt-8 { margin-top: var(--space-8); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-8 { margin-bottom: var(--space-8); }

/* Screen reader only */
.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;
}