/* ========================================
   LANDING PAGE - DARK LINEAR THEME
   ======================================== */

/* ========================================
   CSS Variables
   ======================================== */
:root {
    /* Colors */
    --bg-primary: #0a0a0a;
    --bg-secondary: #111;
    --bg-tertiary: #1a1a1a;
    --border-primary: #222;
    --border-secondary: #333;
    
    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #888;
    --text-tertiary: #666;
    
    /* Brand Gradient */
    --gradient-primary: linear-gradient(135deg, #667eea, #764ba2);
    --gradient-text: linear-gradient(180deg, #ffffff 0%, #888 100%);
    
    /* Accent Colors */
    --color-success: #10b981;
    --color-info: #667eea;
    --color-warning: #f59e0b;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 50px;
    
    /* Shadows */
    --shadow-glow: 0 0 30px rgba(102, 126, 234, 0.4);
    --shadow-card: 0 4px 12px rgba(0, 0, 0, 0.3);
}

/* ========================================
   Base Styles
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ========================================
   Navigation
   ======================================== */
.nav {
    padding: var(--spacing-md) 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-primary);
    background: var(--bg-primary);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.logo {
    font-size: 1.3rem;
    font-weight: 600;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
}

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

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s ease;
}

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

.nav-cta {
    background: var(--gradient-primary);
    color: var(--text-primary) !important;
    padding: 0.6rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 500;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
}

.mobile-nav {
    display: none;
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    text-align: center;
    padding: 12rem 5% 8rem;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.15) 0%, transparent 70%);
    pointer-events: none;
}

.badge {
    display: inline-block;
    background: rgba(102, 126, 234, 0.2);
    border: 1px solid rgba(102, 126, 234, 0.3);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-xl);
    font-size: 0.8rem;
    color: var(--color-info);
    margin-bottom: var(--spacing-lg);
    animation: pulse 3s ease-in-out infinite;
}

.beta-count {
    font-weight: 600;
    color: var(--text-primary);
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.8; }
}

.hero h1 {
    font-size: 4.5rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    z-index: 1;
}

.hero p {
    font-size: 1.3rem;
    color: var(--text-tertiary);
    max-width: 500px;
    margin: 0 auto var(--spacing-xl);
}

.btn-glow {
    background: var(--gradient-primary);
    color: var(--text-primary);
    padding: var(--spacing-sm) 2.5rem;
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 500;
    display: inline-block;
    box-shadow: var(--shadow-glow);
    transition: transform 0.2s ease, box-shadow 0.3s ease;
}

.btn-glow:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 40px rgba(102, 126, 234, 0.6);
}

/* ========================================
   Stats Section
   ======================================== */
.stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-3xl);
    padding: var(--spacing-3xl) 5%;
    border-top: 1px solid var(--border-primary);
    border-bottom: 1px solid var(--border-primary);
    margin: 0 5%;
}

.stat {
    text-align: center;
}

.stat-value {
    font-size: 3rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: var(--text-tertiary);
    font-size: 0.9rem;
    margin-top: var(--spacing-xs);
}

/* ========================================
   Features Grid
   ======================================== */
.features-section {
    padding: var(--spacing-3xl) 5%;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-tertiary);
}

.features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--border-primary);
    max-width: 1200px;
    margin: 0 auto;
}

.feature {
    background: rgba(255, 255, 255, 0.02);
    border-radius: 16px;
    padding: var(--spacing-xl);
    transition: all 0.3s ease;
    position: relative;
}

.feature:hover {
    background: rgba(255, 255, 255, 0.05);
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(102, 126, 234, 0.15);
}

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.2), rgba(118, 75, 162, 0.2));
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    font-size: 1.25rem;
    color: #667eea;
}

.feature h3 {
    font-size: 1.2rem;
    margin-bottom: 0.75rem;
}

.feature p {
    color: var(--text-tertiary);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* ========================================
   Product Preview Section
   ======================================== */
.product-preview {
    padding: var(--spacing-3xl) 5%;
    background: var(--bg-secondary);
}

.preview-container {
    max-width: 1000px;
    margin: 0 auto;
}

.preview-window {
    background: #1a1a2e;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.5);
}

.preview-header {
    background: #0f0f1a;
    padding: var(--spacing-sm);
    display: flex;
    gap: 8px;
    border-bottom: 1px solid var(--border-primary);
}

.preview-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.preview-dot:nth-child(1) { background: #ff5f57; }
.preview-dot:nth-child(2) { background: #febc2e; }
.preview-dot:nth-child(3) { background: #28c840; }

.preview-content {
    display: grid;
    grid-template-columns: 220px 1fr;
    min-height: 400px;
}

.preview-sidebar {
    background: #1a1a2e;
    padding: var(--spacing-md);
    border-right: 1px solid var(--border-primary);
}

.sidebar-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    color: var(--text-secondary);
    font-size: 0.85rem;
    border-radius: var(--radius-sm);
    margin-bottom: 0.25rem;
    transition: all 0.2s ease;
}

.sidebar-item:hover {
    background: rgba(102, 126, 234, 0.1);
    color: var(--text-primary);
}

.sidebar-item.active {
    background: rgba(102, 126, 234, 0.2);
    color: var(--text-primary);
}

.sidebar-item i {
    width: 16px;
}

.preview-main {
    background: #1a1a2e;
    padding: var(--spacing-lg);
}

.preview-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.preview-stat {
    background: #252540;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
}

.preview-stat-label {
    color: var(--text-secondary);
    font-size: 0.75rem;
    margin-bottom: 0.25rem;
}

.preview-stat-value {
    color: var(--text-primary);
    font-size: 1.5rem;
    font-weight: 700;
}

.preview-stat-value.green {
    color: var(--color-success);
}

.preview-chart {
    background: #252540;
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
    height: 150px;
    display: flex;
    align-items: flex-end;
    gap: 0.5rem;
}

.chart-bar {
    flex: 1;
    background: var(--gradient-primary);
    border-radius: 4px 4px 0 0;
    transition: all 0.3s ease;
}

.chart-bar:hover {
    opacity: 0.8;
}

/* ========================================
   User Types Section
   ======================================== */
.user-types {
    padding: var(--spacing-3xl) 5%;
}

.user-types-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    max-width: 1200px;
    margin: 0 auto;
}

.user-type-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    transition: all 0.3s ease;
}

.user-type-card:hover {
    border-color: var(--color-info);
    transform: translateY(-4px);
    box-shadow: var(--shadow-card);
}

.user-type-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.user-type-icon.pilot { color: #667eea; }
.user-type-icon.client { color: #10b981; }
.user-type-icon.dsp { color: #f59e0b; }

.user-type-card h3 {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-sm);
}

.user-type-card p {
    color: var(--text-tertiary);
    margin-bottom: var(--spacing-md);
    font-size: 0.95rem;
}

.user-type-card .btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s ease;
}

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

.btn-outline:hover {
    border-color: var(--color-info);
    background: rgba(102, 126, 234, 0.1);
}

/* ========================================
   Final CTA Section
   ======================================== */
.cta {
    text-align: center;
    padding: 8rem 5%;
    background: var(--bg-secondary);
}

.cta h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cta p {
    color: var(--text-tertiary);
    margin-bottom: var(--spacing-lg);
    font-size: 1.1rem;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-primary);
    padding: var(--spacing-3xl) 5% var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-2xl);
    max-width: 1200px;
    margin: 0 auto var(--spacing-2xl);
}

.footer-brand {
    max-width: 300px;
}

.footer-brand .logo {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    display: block;
}

.footer-brand p {
    color: var(--text-tertiary);
    font-size: 0.9rem;
    line-height: 1.6;
}

.footer-links h4 {
    font-size: 0.9rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.footer-links ul {
    list-style: none;
}

.footer-links ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-links ul li a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color 0.2s ease;
}

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

.footer-bottom {
    border-top: 1px solid var(--border-primary);
    padding-top: var(--spacing-lg);
    text-align: center;
    color: var(--text-tertiary);
    font-size: 0.85rem;
}

/* ========================================
   Responsive Design
   ======================================== */

/* Tablet */
@media (max-width: 1024px) {
    .hero h1 {
        font-size: 3.5rem;
    }
    
    .features {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stats {
        gap: var(--spacing-2xl);
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

/* Mobile */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .mobile-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-secondary);
        border-bottom: 1px solid var(--border-primary);
        padding: var(--spacing-sm) 5%;
    }
    
    .mobile-nav.active {
        display: block;
    }
    
    .mobile-nav a {
        display: block;
        padding: var(--spacing-sm) 0;
        color: var(--text-secondary);
        text-decoration: none;
        border-bottom: 1px solid var(--border-primary);
    }
    
    .mobile-nav a:hover {
        color: var(--text-primary);
    }
    
    .hero {
        padding: 6rem 5% 4rem;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero p {
        font-size: 1.1rem;
    }
    
    .stats {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
    
    .features {
        grid-template-columns: 1fr;
    }
    
    .preview-content {
        grid-template-columns: 1fr;
    }
    
    .preview-sidebar {
        display: none;
    }
    
    .preview-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .user-types-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .btn-glow {
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
    }
    
    .stat-value {
        font-size: 2rem;
    }
    
    .feature {
        padding: var(--spacing-lg);
    }
    
    .section-header h2 {
        font-size: 1.8rem;
    }
}

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

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Focus States */
a:focus,
button:focus {
    outline: 2px solid var(--color-info);
    outline-offset: 2px;
}

/* Tab Pills for Preview Section */
.nav-pills .nav-link {
    color: var(--text-primary);
    font-weight: 500;
}

.nav-pills .nav-link.active {
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    color: white;
}

.nav-pills .nav-link:hover:not(.active) {
    background: var(--bg-tertiary);
}

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

.tab-pane.active .col-md-6 {
    animation: fadeInUp 0.5s ease forwards;
}

.tab-pane.active .col-md-6:nth-child(1) { animation-delay: 0s; }
.tab-pane.active .col-md-6:nth-child(2) { animation-delay: 0.1s; }
.tab-pane.active .col-md-6:nth-child(3) { animation-delay: 0.2s; }
.tab-pane.active .col-md-6:nth-child(4) { animation-delay: 0.3s; }

/* Card hover effect */
#previewTabContent .card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

#previewTabContent .card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.3);
}

/* Extended animation delays for 8 cards */
.tab-pane.active .col-6:nth-child(5) { animation-delay: 0.15s; }
.tab-pane.active .col-6:nth-child(6) { animation-delay: 0.2s; }
.tab-pane.active .col-6:nth-child(7) { animation-delay: 0.25s; }
.tab-pane.active .col-6:nth-child(8) { animation-delay: 0.3s; }

.tab-pane.active .col-6 {
    animation: fadeInUp 0.4s ease forwards;
    opacity: 0;
}

.tab-pane.active .col-6:nth-child(1) { animation-delay: 0s; }
.tab-pane.active .col-6:nth-child(2) { animation-delay: 0.05s; }
.tab-pane.active .col-6:nth-child(3) { animation-delay: 0.1s; }
.tab-pane.active .col-6:nth-child(4) { animation-delay: 0.15s; }