/* ==========================================
   Quartz Control Center - Showcase Website
   Modern, Premium Design System
   ========================================== */

/* CSS Custom Properties */
:root {
    /* Colors - Green/Sage Theme from Logo */
    --color-primary: #4a7c59;
    --color-primary-dark: #3d6549;
    --color-primary-light: #6b9b7a;
    --color-accent: #2d5a3d;
    
    /* Neutral Colors */
    --color-bg: #fafbfc;
    --color-bg-dark: #0d1117;
    --color-surface: #ffffff;
    --color-surface-elevated: #ffffff;
    --color-border: #e1e4e8;
    --color-border-light: #f0f3f6;
    
    /* Text Colors */
    --color-text: #1f2937;
    --color-text-secondary: #6b7280;
    --color-text-muted: #9ca3af;
    
    /* Feature Card Colors */
    --color-blue: #3b82f6;
    --color-green: #10b981;
    --color-orange: #f59e0b;
    --color-purple: #8b5cf6;
    --color-teal: #14b8a6;
    --color-pink: #ec4899;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #4a7c59 0%, #2d5a3d 100%);
    --gradient-hero: linear-gradient(135deg, #f0fdf4 0%, #ecfdf5 50%, #f0fdfa 100%);
    --gradient-card: linear-gradient(145deg, rgba(255,255,255,0.9) 0%, rgba(255,255,255,0.7) 100%);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
}

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

/* ==========================================
   Navigation
   ========================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border-light);
    z-index: 1000;
    padding: var(--spacing-md) 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 600;
    font-size: var(--font-size-lg);
    color: var(--color-text);
}

.logo img {
    border-radius: var(--radius-md);
}

.logo-text {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.logo-title {
    font-weight: 600;
    font-size: var(--font-size-base);
    line-height: 1.2;
}

.logo-slogan {
    font-size: var(--font-size-xs);
    font-weight: 400;
    color: var(--color-text-secondary);
    line-height: 1.2;
}

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

.nav-links a {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

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

.github-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: var(--color-bg-dark);
    color: white !important;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.github-link:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: var(--transition-base);
}

/* ==========================================
   Hero Section
   ========================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: calc(80px + var(--spacing-4xl)) 0 var(--spacing-4xl);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: var(--gradient-hero);
    z-index: -1;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(74, 124, 89, 0.1) 0%, transparent 50%);
}

.hero-bg::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 200px;
    background: linear-gradient(to top, var(--color-bg), transparent);
}

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

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: rgba(74, 124, 89, 0.1);
    color: var(--color-primary);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    margin-bottom: var(--spacing-xl);
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--color-primary);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.hero h1 {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.02em;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: var(--font-size-xl);
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto var(--spacing-2xl);
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-3xl);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-2xl);
    flex-wrap: wrap;
}

.stat {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.stat-icon {
    font-size: var(--font-size-xl);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md), 0 4px 14px rgba(74, 124, 89, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), 0 6px 20px rgba(74, 124, 89, 0.5);
}

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

.btn-secondary:hover {
    background: var(--color-bg);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.btn-large {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: var(--font-size-lg);
}

/* ==========================================
   Section Styles
   ========================================== */
section {
    padding: var(--spacing-4xl) 0;
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--spacing-3xl);
}

.section-header h2 {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

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

/* ==========================================
   Features Section
   ========================================== */
.features {
    background: var(--color-surface);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.feature-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    transition: all var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.feature-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
}

.feature-icon-blue { background: rgba(59, 130, 246, 0.1); color: var(--color-blue); }
.feature-icon-green { background: rgba(16, 185, 129, 0.1); color: var(--color-green); }
.feature-icon-orange { background: rgba(245, 158, 11, 0.1); color: var(--color-orange); }
.feature-icon-purple { background: rgba(139, 92, 246, 0.1); color: var(--color-purple); }
.feature-icon-teal { background: rgba(20, 184, 166, 0.1); color: var(--color-teal); }
.feature-icon-pink { background: rgba(236, 72, 153, 0.1); color: var(--color-pink); }

.feature-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.feature-card p {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.7;
}

/* ==========================================
   Screenshot Section - SaaS Gallery
   ========================================== */
.screenshot-section {
    background: linear-gradient(180deg, var(--color-bg) 0%, #f3f4f6 100%);
    padding: var(--spacing-4xl) 0 calc(var(--spacing-4xl) * 1.5);
}

/* Gallery Tabs */
.gallery-tabs {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-2xl);
    flex-wrap: wrap;
    padding: var(--spacing-sm);
    background: var(--color-surface);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-md);
    max-width: 950px;
    margin-left: auto;
    margin-right: auto;
}

.gallery-tab {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    background: transparent;
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    font-family: var(--font-family);
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

.gallery-tab:hover {
    color: var(--color-primary);
    background: rgba(74, 124, 89, 0.05);
}

.gallery-tab.active {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md);
}

.gallery-tab svg {
    flex-shrink: 0;
}

/* Gallery Content */
.gallery-content {
    position: relative;
}

.gallery-item {
    display: none;
    animation: fadeInUp 0.4s ease;
}

.gallery-item.active {
    display: block;
}

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

/* Screenshot Frame - Enhanced */
.screenshot-frame {
    background: linear-gradient(145deg, #1a1a2e 0%, #0d1117 100%);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: 
        0 50px 100px -20px rgba(0, 0, 0, 0.25),
        0 30px 60px -30px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    transform: perspective(1000px) rotateX(2deg);
    transition: transform var(--transition-slow);
}

.screenshot-frame:hover {
    transform: perspective(1000px) rotateX(0deg) scale(1.01);
}

.screenshot-header {
    display: flex;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    background: linear-gradient(180deg, rgba(255,255,255,0.08) 0%, rgba(255,255,255,0.02) 100%);
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.screenshot-dots {
    display: flex;
    gap: 8px;
}

.screenshot-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    transition: transform var(--transition-fast);
}

.screenshot-dots span:hover {
    transform: scale(1.1);
}

.screenshot-dots span:nth-child(1) { background: #ff5f57; box-shadow: 0 0 8px rgba(255, 95, 87, 0.4); }
.screenshot-dots span:nth-child(2) { background: #febc2e; box-shadow: 0 0 8px rgba(254, 188, 46, 0.4); }
.screenshot-dots span:nth-child(3) { background: #28c840; box-shadow: 0 0 8px rgba(40, 200, 64, 0.4); }

.screenshot-title {
    flex: 1;
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.screenshot-actions {
    width: 52px;
}

.screenshot-img {
    width: 100%;
    display: block;
}

/* Gallery Caption */
.gallery-caption {
    text-align: center;
    max-width: 600px;
    margin: var(--spacing-2xl) auto 0;
    padding: 0 var(--spacing-md);
}

.gallery-caption h3 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.gallery-caption p {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ==========================================
   Tech Stack Section
   ========================================== */
.tech-stack {
    background: var(--color-surface);
}

.tech-grid {
    display: flex;
    justify-content: center;
    gap: var(--spacing-3xl);
    flex-wrap: wrap;
}

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

.tech-logo {
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg);
    border-radius: var(--radius-xl);
    color: var(--color-text-secondary);
    transition: all var(--transition-base);
}

.tech-item:hover .tech-logo {
    background: var(--gradient-primary);
    color: white;
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.tech-item span {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
}

/* ==========================================
   Download Section
   ========================================== */
.download-section {
    background: linear-gradient(180deg, #f3f4f6 0%, var(--color-bg) 100%);
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.download-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    background: var(--color-surface);
    border: 2px solid var(--color-border-light);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-2xl);
    transition: all var(--transition-base);
}

.download-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.download-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1a1a1a 0%, #333 100%);
    color: white;
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-lg);
}

.download-icon-windows {
    background: linear-gradient(135deg, #0078d4 0%, #005a9e 100%);
}

.download-icon-docker {
    background: linear-gradient(135deg, #2496ed 0%, #1a7cc4 100%);
}

.download-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.download-card p {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-md);
}

.download-badge {
    display: inline-block;
    background: rgba(74, 124, 89, 0.1);
    color: var(--color-primary);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ==========================================
   CTA Section
   ========================================== */
.cta-section {
    background: var(--gradient-primary);
    color: white;
}

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

.cta-content h2 {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.cta-content p {
    font-size: var(--font-size-lg);
    opacity: 0.9;
    margin-bottom: var(--spacing-2xl);
}

.cta-buttons .btn-primary {
    background: white;
    color: var(--color-primary);
    box-shadow: var(--shadow-lg);
}

.cta-buttons .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

/* ==========================================
   Footer
   ========================================== */
.footer {
    background: var(--color-bg-dark);
    color: white;
    padding: var(--spacing-3xl) 0;
}

.footer .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xl);
}

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

.footer-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.footer-brand img {
    border-radius: var(--radius-sm);
}

.footer-text, .footer-thanks {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.7);
}

.footer-text a, .footer-thanks a {
    color: white;
    text-decoration: underline;
}

.footer-links {
    display: flex;
    gap: var(--spacing-xl);
}

.footer-links a {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: white;
}

/* ==========================================
   Responsive Styles
   ========================================== */
@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .download-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .download-card-docker {
        grid-column: span 2;
        max-width: 400px;
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: var(--spacing-xl);
        gap: var(--spacing-lg);
        border-bottom: 1px solid var(--color-border);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }
    
    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .mobile-menu-btn.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-btn.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
    
    .hero h1 {
        font-size: var(--font-size-4xl);
    }
    
    .hero-description {
        font-size: var(--font-size-lg);
    }
    
    .hero-stats {
        gap: var(--spacing-lg);
    }
    
    .section-header h2 {
        font-size: var(--font-size-3xl);
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .download-grid {
        grid-template-columns: 1fr;
    }
    
    .download-card-docker {
        grid-column: span 1;
        max-width: none;
    }
    
    .tech-grid {
        gap: var(--spacing-xl);
    }
    
    .cta-content h2 {
        font-size: var(--font-size-3xl);
    }
    
    /* Gallery Responsive */
    .gallery-tabs {
        gap: var(--spacing-xs);
        padding: var(--spacing-xs);
        border-radius: var(--radius-xl);
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        max-width: 100%;
        justify-content: flex-start;
    }
    
    .gallery-tabs::-webkit-scrollbar {
        display: none;
    }
    
    .gallery-tab {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-xs);
        white-space: nowrap;
        flex-shrink: 0;
    }
    
    .gallery-tab svg {
        width: 14px;
        height: 14px;
    }
    
    .gallery-caption h3 {
        font-size: var(--font-size-xl);
    }
    
    .gallery-caption p {
        font-size: var(--font-size-sm);
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: var(--font-size-3xl);
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .hero-stats {
        flex-direction: column;
        align-items: center;
    }
}