/* =====================================================
   Quick Cat Landing Page - Premium Modern Design
   ===================================================== */

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

:root {
    /* Brand Colors */
    --primary: #5CE279;
    --primary-dark: #3DB85F;
    --primary-glow: rgba(92, 226, 121, 0.4);
    
    /* Dark Theme (Default) */
    --bg-base: #0a0d14;
    --bg-elevated: #12161f;
    --bg-card: rgba(18, 22, 31, 0.8);
    --bg-card-hover: rgba(26, 32, 44, 0.9);
    
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.5);
    
    --border-subtle: rgba(255, 255, 255, 0.08);
    --border-accent: rgba(92, 226, 121, 0.3);
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #5CE279 0%, #3DB85F 100%);
    --gradient-bg: radial-gradient(ellipse at top, #1a2332 0%, #0a0d14 70%);
    --gradient-glow: radial-gradient(circle, var(--primary-glow) 0%, transparent 70%);
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px var(--primary-glow);
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 5rem;
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    /* Transitions */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --duration-fast: 0.2s;
    --duration-normal: 0.4s;
    --duration-slow: 0.8s;
}

/* Reduce motion for performance */
.reduce-motion * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-base);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

/* Animated Background */
.bg-gradient {
    position: fixed;
    inset: 0;
    background: var(--gradient-bg);
    z-index: -3;
}

.bg-glow {
    position: fixed;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.5;
    z-index: -2;
    animation: float 20s ease-in-out infinite;
}

.bg-glow-1 {
    width: 600px;
    height: 600px;
    background: var(--primary);
    top: -200px;
    right: -200px;
    opacity: 0.15;
}

.bg-glow-2 {
    width: 400px;
    height: 400px;
    background: #3b82f6;
    bottom: 20%;
    left: -100px;
    opacity: 0.1;
    animation-delay: -5s;
}

.bg-glow-3 {
    width: 300px;
    height: 300px;
    background: #8b5cf6;
    top: 50%;
    right: 10%;
    opacity: 0.08;
    animation-delay: -10s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.05); }
    66% { transform: translate(-20px, 20px) scale(0.95); }
}

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

/* =====================================================
   Header
   ===================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-md) 0;
    transition: all var(--duration-normal) var(--ease-out);
}

.header.scrolled {
    background: rgba(10, 13, 20, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle);
    padding: var(--space-sm) 0;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-lg);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    text-decoration: none;
}

.logo img {
    width: 40px;
    height: 40px;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
}

.nav {
    display: flex;
    gap: var(--space-lg);
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color var(--duration-fast);
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 0.75rem 1.5rem;
    border-radius: 100px;
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: all var(--duration-normal) var(--ease-out);
}

.btn-primary {
    background: var(--gradient-primary);
    color: #000;
    box-shadow: var(--shadow-glow), var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 0 60px var(--primary-glow), var(--shadow-lg);
}

.btn-ghost {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-subtle);
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--border-accent);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

/* =====================================================
   Hero Section
   ===================================================== */
.hero {
    padding: 160px 0 100px;
    position: relative;
    overflow: hidden;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 0.5rem 1rem;
    background: rgba(92, 226, 121, 0.1);
    border: 1px solid var(--border-accent);
    border-radius: 100px;
    font-size: 0.85rem;
    color: var(--primary);
    margin-bottom: var(--space-lg);
}

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

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.8); }
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--space-md);
    letter-spacing: -0.02em;
}

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

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto var(--space-xl);
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--space-2xl);
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
    padding: var(--space-md) var(--space-xl);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 16px;
    backdrop-filter: blur(10px);
}

.stat {
    text-align: center;
}

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

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

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

/* Floating Cards */
.hero-cards {
    position: absolute;
    inset: 0;
    pointer-events: none;
    display: none;
}

.floating-card {
    position: absolute;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 0.75rem 1.25rem;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 12px;
    backdrop-filter: blur(10px);
    white-space: nowrap;
    transition: transform var(--duration-slow) var(--ease-out);
}

.card-icon {
    font-size: 1.25rem;
}

.card-text {
    font-size: 0.9rem;
    font-weight: 500;
}

.card-1 { top: 20%; left: 5%; animation: cardFloat 8s ease-in-out infinite; }
.card-2 { top: 15%; right: 5%; animation: cardFloat 8s ease-in-out infinite 1s; }
.card-3 { bottom: 30%; left: 8%; animation: cardFloat 8s ease-in-out infinite 2s; }
.card-4 { bottom: 25%; right: 8%; animation: cardFloat 8s ease-in-out infinite 3s; }

@keyframes cardFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

@media (min-width: 1024px) {
    .hero-cards {
        display: block;
    }
}

/* =====================================================
   Features Bento Grid
   ===================================================== */
.features {
    padding: var(--space-2xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.section-tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(92, 226, 121, 0.1);
    border: 1px solid var(--border-accent);
    border-radius: 100px;
    font-size: 0.85rem;
    color: var(--primary);
    font-weight: 500;
    margin-bottom: var(--space-md);
}

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    margin-bottom: var(--space-sm);
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto;
}

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

.bento-card {
    position: relative;
    padding: var(--space-xl);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 24px;
    overflow: hidden;
    transition: all var(--duration-normal) var(--ease-out);
}

.bento-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-accent);
    transform: translateY(-4px);
}

.bento-glow {
    position: absolute;
    top: -100px;
    right: -100px;
    width: 200px;
    height: 200px;
    background: var(--gradient-glow);
    opacity: 0;
    transition: opacity var(--duration-normal);
}

.bento-card:hover .bento-glow {
    opacity: 1;
}

.bento-lg {
    grid-column: span 2;
}

.bento-md {
    grid-column: span 1;
    grid-row: span 1;
}

.bento-sm {
    grid-column: span 1;
}

.bento-icon, .bento-icon-lg {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: rgba(92, 226, 121, 0.15);
    border-radius: 16px;
    font-size: 1.75rem;
    margin-bottom: var(--space-md);
}

.bento-icon-lg {
    width: 72px;
    height: 72px;
    font-size: 2.25rem;
}

.bento-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.bento-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Shortcut Demo */
.shortcut-demo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
    flex-wrap: wrap;
}

.key {
    padding: 0.5rem 1rem;
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    font-family: var(--font-sans);
}

.key.accent {
    background: var(--gradient-primary);
    color: #000;
    border-color: transparent;
}

.shortcut-demo span {
    color: var(--text-muted);
}

/* Feature Tags */
.feature-tags {
    display: flex;
    gap: var(--space-xs);
    margin-top: var(--space-md);
    flex-wrap: wrap;
}

.tag {
    padding: 0.35rem 0.75rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 100px;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Search Engines */
.search-engines {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

.engine {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 0.5rem;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.engine-icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-elevated);
    border-radius: 6px;
    font-weight: 700;
    font-size: 0.75rem;
    color: var(--primary);
}

/* =====================================================
   How It Works
   ===================================================== */
.how-it-works {
    padding: var(--space-2xl) 0;
    background: linear-gradient(180deg, transparent 0%, rgba(92, 226, 121, 0.02) 50%, transparent 100%);
}

.steps-container {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    max-width: 900px;
    margin: 0 auto;
}

.step {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: var(--space-xl);
    align-items: center;
    padding: var(--space-xl);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 24px;
    transition: all var(--duration-normal) var(--ease-out);
}

.step:hover {
    border-color: var(--border-accent);
    transform: translateX(4px);
}

.step-number {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: 16px;
    font-size: 1.5rem;
    font-weight: 800;
    color: #000;
}

.step-content h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--space-xs);
}

.step-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.step-illustration {
    width: 160px;
}

/* Browser Mockup */
.browser-mockup {
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: 12px;
    overflow: hidden;
}

.browser-bar {
    display: flex;
    gap: 6px;
    padding: 10px 12px;
    background: rgba(0, 0, 0, 0.2);
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.dot.red { background: #ff5f57; }
.dot.yellow { background: #febc2e; }
.dot.green { background: #28c840; }

.browser-content {
    padding: var(--space-lg);
    display: flex;
    justify-content: center;
}

.extension-icon {
    width: 48px;
    height: 48px;
    animation: bounce 2s ease-in-out infinite;
}

.extension-icon img {
    width: 100%;
    height: 100%;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

/* Settings Preview */
.settings-preview {
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: 12px;
    padding: var(--space-sm);
}

.setting-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 0.5rem 0.75rem;
    border-radius: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.setting-item.active {
    background: rgba(92, 226, 121, 0.1);
    color: var(--primary);
}

.setting-item .radio {
    width: 16px;
    height: 16px;
    border: 2px solid currentColor;
    border-radius: 50%;
    position: relative;
}

.setting-item.active .radio::after {
    content: '';
    position: absolute;
    inset: 3px;
    background: var(--primary);
    border-radius: 50%;
}

/* Download Demo */
.download-demo {
    display: flex;
    justify-content: center;
}

.demo-image {
    width: 100px;
    height: 100px;
    position: relative;
}

.image-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 12px;
}

.cursor-pointer {
    position: absolute;
    bottom: 10px;
    right: 10px;
    width: 24px;
    height: 24px;
    color: white;
    animation: click 2s ease-in-out infinite;
}

@keyframes click {
    0%, 40%, 100% { transform: scale(1); opacity: 1; }
    20% { transform: scale(0.9); opacity: 0.8; }
}

.download-indicator {
    position: absolute;
    top: -10px;
    right: -10px;
    width: 32px;
    height: 32px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: popIn 2s ease-in-out infinite;
}

.download-indicator svg {
    width: 18px;
    height: 18px;
    color: #000;
}

@keyframes popIn {
    0%, 50% { transform: scale(0); opacity: 0; }
    60% { transform: scale(1.2); opacity: 1; }
    70%, 100% { transform: scale(1); opacity: 1; }
}

/* Step Connector */
.step-connector {
    height: 40px;
    width: 200px;
    align-self: center;
    opacity: 0.3;
}

.step-connector svg {
    width: 100%;
    height: 100%;
}

.step-connector.reverse svg {
    transform: scaleX(-1);
}

/* =====================================================
   Privacy Section
   ===================================================== */
.privacy {
    padding: var(--space-2xl) 0;
}

.privacy-card {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--space-xl);
    padding: var(--space-2xl);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 24px;
    max-width: 900px;
    margin: 0 auto;
}

.privacy-icon {
    font-size: 3rem;
}

.privacy-content h2 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.privacy-content > p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.7;
    margin-bottom: var(--space-lg);
}

.privacy-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.privacy-feature {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--primary);
    font-weight: 500;
}

.privacy-feature svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

/* Privacy Details */
.privacy-details {
    border-top: 1px solid var(--border-subtle);
    padding-top: var(--space-lg);
}

.privacy-details summary {
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 0.95rem;
    transition: color var(--duration-fast);
}

.privacy-details summary:hover {
    color: var(--primary);
}

.privacy-full {
    margin-top: var(--space-lg);
    padding: var(--space-lg);
    background: rgba(0, 0, 0, 0.2);
    border-radius: 12px;
}

.privacy-full h4 {
    font-size: 1rem;
    font-weight: 600;
    margin: var(--space-md) 0 var(--space-sm);
    color:var(--text-primary);
}

.privacy-full h4:first-child {
    margin-top: 0;
}

.privacy-full p, .privacy-full li {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
}

.privacy-full ul {
    padding-left: var(--space-md);
    margin: var(--space-sm) 0;
}

.privacy-full li {
    margin-bottom: var(--space-xs);
}

.privacy-full strong {
    color: var(--text-primary);
}

.privacy-date {
    margin-top: var(--space-lg) !important;
    font-style: italic;
    opacity: 0.7;
}

/* =====================================================
   CTA Section
   ===================================================== */
.cta {
    padding: var(--space-2xl) 0;
}

.cta-content {
    text-align: center;
    padding: var(--space-2xl);
    background: var(--gradient-primary);
    border-radius: 32px;
    position: relative;
    overflow: hidden;
}

.cta-content::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 30% 0%, rgba(255, 255, 255, 0.3) 0%, transparent 50%);
}

.cta-content h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800;
    color: #000;
    margin-bottom: var(--space-sm);
    position: relative;
}

.cta-content p {
    font-size: 1.1rem;
    color: rgba(0, 0, 0, 0.7);
    margin-bottom: var(--space-lg);
    position: relative;
}

.cta-content .btn {
    background: #000;
    color: var(--primary);
    position: relative;
}

.cta-content .btn:hover {
    background: #111;
}

/* =====================================================
   Footer
   ===================================================== */
.footer {
    padding: var(--space-xl) 0;
    border-top: 1px solid var(--border-subtle);
}

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

.footer-brand {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
}

.footer-logo {
    width: 28px;
    height: 28px;
}

.footer-brand span {
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary);
}

.footer-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-xs);
}

.footer-copyright {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* =====================================================
   Reveal Animations
   ===================================================== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--duration-slow) var(--ease-out), 
                transform var(--duration-slow) var(--ease-out);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* =====================================================
   Responsive Design
   ===================================================== */
@media (max-width: 1024px) {
    .bento-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .bento-lg {
        grid-column: span 2;
    }
}

@media (max-width: 768px) {
    :root {
        --space-xl: 2rem;
        --space-2xl: 3rem;
    }
    
    .nav {
        display: none;
    }
    
    .hero {
        padding: 120px 0 60px;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--space-md);
    }
    
    .stat-divider {
        width: 40px;
        height: 1px;
    }
    
    .bento-grid {
        grid-template-columns: 1fr;
    }
    
    .bento-lg, .bento-md, .bento-sm {
        grid-column: span 1;
    }
    
    .step {
        grid-template-columns: auto 1fr;
        gap: var(--space-md);
    }
    
    .step-illustration {
        display: none;
    }
    
    .step-connector {
        display: none;
    }
    
    .privacy-card {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .privacy-icon {
        display: none;
    }
    
    .privacy-features {
        grid-template-columns: 1fr;
        text-align: left;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-md);
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }
    
    .btn {
        justify-content: center;
    }
    
    .bento-card {
        padding: var(--space-lg);
    }
    
    .shortcut-demo {
        justify-content: center;
    }
    
    .search-engines {
        grid-template-columns: 1fr;
    }
}