/* Root Variables */
:root {
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --secondary: #8b5cf6;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
}

/* Dark Theme */
[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-card: #1e293b;
    --bg-card-hover: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-tertiary: #94a3b8;
    --border-color: #334155;
    --shadow: rgba(0, 0, 0, 0.3);
}

/* Light Theme */
[data-theme="light"] {
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #e2e8f0;
    --bg-card: #ffffff;
    --bg-card-hover: #f1f5f9;
    --text-primary: #0f172a;
    --text-secondary: #334155;
    --text-tertiary: #64748b;
    --border-color: #e2e8f0;
    --shadow: rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header Styles */
.app-header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem 2rem;
    box-shadow: 0 2px 10px var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo svg {
    color: var(--primary);
    flex-shrink: 0;
}

.logo-text h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
    line-height: 1.2;
}

.logo-text .subtitle {
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--text-tertiary);
    display: inline-block;
    margin-left: 0.5rem;
}

.last-updated {
    display: block;
    font-size: 0.75rem;
    color: var(--text-tertiary);
    font-family: 'JetBrains Mono', monospace;
    margin-top: 0.25rem;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

/* Theme Toggle */
.theme-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--bg-tertiary);
    padding: 0.5rem;
    border-radius: 2rem;
}

.theme-toggle-btn {
    width: 2.5rem;
    height: 1.25rem;
    background: var(--primary);
    border: none;
    border-radius: 1rem;
    cursor: pointer;
    position: relative;
    transition: all 0.3s ease;
}

.theme-toggle-btn::after {
    content: '';
    position: absolute;
    width: 1rem;
    height: 1rem;
    background: white;
    border-radius: 50%;
    top: 50%;
    transform: translateY(-50%);
    transition: all 0.3s ease;
}

[data-theme="dark"] .theme-toggle-btn::after {
    left: 0.125rem;
}

[data-theme="light"] .theme-toggle-btn::after {
    left: calc(100% - 1.125rem);
}

.theme-toggle-icon {
    display: flex;
    align-items: center;
    color: var(--text-tertiary);
    transition: color 0.3s ease;
}

[data-theme="dark"] .theme-toggle-icon.moon {
    color: var(--primary);
}

[data-theme="light"] .theme-toggle-icon.sun {
    color: var(--warning);
}

/* Main Landing Content */
.landing-main {
    flex: 1;
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
    padding: 3rem 2rem;
}

.intro-section {
    text-align: center;
    margin-bottom: 3rem;
}

.intro-section h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.intro-section p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

/* Apps Grid */
.apps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.app-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 2rem;
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.app-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.app-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--primary);
    transform: translateY(-4px);
    box-shadow: 0 12px 24px var(--shadow);
}

.app-card:hover::before {
    transform: scaleX(1);
}

.card-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 1rem;
    color: white;
}

.card-content {
    flex: 1;
}

.card-content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.card-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

.card-features {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.feature-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    padding: 0.375rem 0.75rem;
    border-radius: 0.5rem;
    font-size: 0.8rem;
    font-weight: 500;
}

.feature-tag svg {
    flex-shrink: 0;
}

.card-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--bg-tertiary);
    border-radius: 50%;
    color: var(--text-secondary);
    transition: all 0.3s ease;
    align-self: flex-end;
}

.app-card:hover .card-arrow {
    background: var(--primary);
    color: white;
    transform: translateX(4px);
}

/* Footer */
.landing-footer {
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    margin-top: auto;
}

.footer-content {
    text-align: center;
}

.footer-content p {
    color: var(--text-tertiary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}

.footer-links a {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .logo {
        flex-direction: column;
        text-align: center;
    }
    
    .logo-text h1 {
        font-size: 1.25rem;
    }
    
    .logo-text .subtitle {
        display: block;
        margin-left: 0;
        margin-top: 0.25rem;
    }
    
    .apps-grid {
        grid-template-columns: 1fr;
    }
    
    .intro-section h2 {
        font-size: 2rem;
    }
    
    .intro-section p {
        font-size: 1rem;
    }
    
    .landing-main {
        padding: 2rem 1rem;
    }
}