/* =====================================================
   ParkAbility Landing Page - CSS Stylesheet
   Modern, accessible design with smooth animations
   ===================================================== */

/* CSS Variables */
:root {
    /* Colors */
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary: #0ea5e9;
    --accent: #06b6d4;

    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;

    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;

    --white: #ffffff;
    --black: #000000;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    --gradient-hero: linear-gradient(135deg, #1e3a8a 0%, #1e40af 25%, #2563eb 50%, #0ea5e9 100%);
    --gradient-dark: linear-gradient(180deg, var(--gray-900) 0%, var(--gray-800) 100%);

    /* 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-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;
    --spacing-24: 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;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    --shadow-glow: 0 0 40px rgb(37 99 235 / 0.3);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;

    /* Z-Index */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal: 400;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--gray-700);
    background-color: var(--white);
    overflow-x: hidden;
}

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

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

ul, ol {
    list-style: none;
}

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

/* =====================================================
   Navigation
   ===================================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    padding: var(--spacing-4) 0;
    transition: all var(--transition-slow);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-3) 0;
}

.navbar.scrolled .nav-logo,
.navbar.scrolled .nav-links a {
    color: var(--gray-800);
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--white);
}

.logo-icon {
    width: 40px;
    height: 40px;
    object-fit: contain;
    border-radius: var(--radius-lg);
    background: var(--white);
    padding: 4px;
}

.footer-logo .logo-icon {
    width: 44px;
    height: 44px;
    background: var(--white);
    padding: 4px;
    border-radius: var(--radius-lg);
}

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

.nav-links a {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: rgba(255, 255, 255, 0.9);
    transition: color var(--transition-fast);
}

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

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--spacing-2);
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--white);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.navbar.scrolled .nav-toggle span {
    background: var(--gray-800);
}

/* =====================================================
   Buttons
   ===================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    cursor: pointer;
}

.btn svg {
    width: 18px;
    height: 18px;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: var(--shadow-md), 0 0 20px rgb(37 99 235 / 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), 0 0 30px rgb(37 99 235 / 0.4);
}

.btn-outline {
    background: transparent;
    color: var(--white);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

.btn-nav {
    background: rgba(255, 255, 255, 0.15);
    color: var(--white);
    backdrop-filter: blur(10px);
}

.btn-nav:hover {
    background: rgba(255, 255, 255, 0.25);
}

.navbar.scrolled .btn-nav {
    background: var(--primary);
    color: var(--white);
}

.btn-lg {
    padding: var(--spacing-4) var(--spacing-8);
    font-size: var(--font-size-base);
}

.btn-block {
    width: 100%;
}

/* =====================================================
   Hero Section
   ===================================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    padding: var(--spacing-24) 0 var(--spacing-16);
}

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

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

.hero-pattern {
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle at 25% 25%, rgba(255,255,255,0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0.5;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-6);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-16);
    align-items: center;
}

.hero-content {
    color: var(--white);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-4);
    background: rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    margin-bottom: var(--spacing-6);
    backdrop-filter: blur(10px);
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--success);
    border-radius: var(--radius-full);
    animation: pulse 2s infinite;
}

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

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-6);
}

.text-gradient {
    background: linear-gradient(135deg, #60a5fa 0%, #34d399 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-8);
    max-width: 500px;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-10);
}

.hero-stats {
    display: flex;
    gap: var(--spacing-10);
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: 800;
}

.stat-label {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.7);
}

/* Phone Mockup */
.hero-visual {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.phone-mockup {
    position: relative;
}

.phone-frame {
    position: relative;
    width: 280px;
    height: 580px;
    background: var(--gray-900);
    border-radius: 40px;
    padding: 12px;
    box-shadow: var(--shadow-2xl);
}

.phone-frame::before {
    content: '';
    position: absolute;
    top: 16px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 24px;
    background: var(--black);
    border-radius: var(--radius-full);
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: var(--gray-100);
    border-radius: 32px;
    overflow: hidden;
}

.phone-glow {
    position: absolute;
    inset: -20%;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.3) 0%, transparent 60%);
    z-index: -1;
    animation: glow 4s ease-in-out infinite;
}

@keyframes glow {
    0%, 100% { opacity: 0.5; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.1); }
}

/* App Preview */
.app-preview {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.app-header {
    padding: var(--spacing-6) var(--spacing-4) var(--spacing-4);
    background: var(--white);
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.app-logo-small {
    width: 40px;
    height: 40px;
    object-fit: contain;
    border-radius: var(--radius-md);
}

.app-header-text {
    flex: 1;
}

.app-title {
    font-size: var(--font-size-base);
    font-weight: 700;
    color: var(--gray-900);
}

.app-location {
    font-size: var(--font-size-xs);
    color: var(--gray-500);
}

.app-map {
    flex: 1;
    position: relative;
    background: linear-gradient(135deg, #e0f2fe 0%, #f0f9ff 100%);
    background-image:
        linear-gradient(rgba(148, 163, 184, 0.2) 1px, transparent 1px),
        linear-gradient(90deg, rgba(148, 163, 184, 0.2) 1px, transparent 1px);
    background-size: 20px 20px;
}

.map-pin {
    position: absolute;
    width: 32px;
    height: 32px;
    color: var(--primary);
    animation: bounce 2s infinite;
    cursor: pointer;
    transition: transform var(--transition-fast);
}

.map-pin:hover {
    transform: scale(1.2);
}

.map-pin.active {
    color: var(--success);
    z-index: 10;
}

.pin-1 { top: 20%; left: 30%; animation-delay: 0s; }
.pin-2 { top: 35%; right: 25%; animation-delay: 0.3s; }
.pin-3 { top: 55%; left: 45%; animation-delay: 0.6s; }

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

.user-location {
    position: absolute;
    bottom: 30%;
    left: 40%;
    width: 16px;
    height: 16px;
    background: var(--primary);
    border: 3px solid var(--white);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-md);
}

.user-location::after {
    content: '';
    position: absolute;
    inset: -8px;
    background: var(--primary);
    border-radius: var(--radius-full);
    opacity: 0.3;
    animation: ripple 2s infinite;
}

@keyframes ripple {
    0% { transform: scale(1); opacity: 0.3; }
    100% { transform: scale(2); opacity: 0; }
}

.app-card {
    background: var(--white);
    margin: var(--spacing-3);
    padding: var(--spacing-4);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

.card-badge {
    display: inline-block;
    padding: var(--spacing-1) var(--spacing-3);
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-2);
}

.card-badge.available {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

.card-title {
    font-size: var(--font-size-base);
    font-weight: 700;
    color: var(--gray-900);
}

.card-distance {
    font-size: var(--font-size-sm);
    color: var(--gray-500);
    margin-bottom: var(--spacing-2);
}

.card-rating {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
    font-size: var(--font-size-sm);
    color: var(--gray-600);
}

.card-rating svg {
    width: 14px;
    height: 14px;
    color: var(--warning);
}

/* Scroll Indicator */
.hero-scroll {
    position: absolute;
    bottom: var(--spacing-8);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-2);
    color: rgba(255, 255, 255, 0.6);
    font-size: var(--font-size-sm);
    animation: scrollBounce 2s infinite;
}

.hero-scroll svg {
    width: 20px;
    height: 20px;
}

@keyframes scrollBounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(5px); }
}

/* =====================================================
   Section Styles
   ===================================================== */
section {
    padding: var(--spacing-24) 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-16);
}

.section-label {
    display: inline-block;
    padding: var(--spacing-2) var(--spacing-4);
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-4);
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: var(--spacing-4);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--gray-500);
}

/* =====================================================
   Features Section
   ===================================================== */
.features {
    background: var(--gray-50);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-6);
}

.feature-card {
    background: var(--white);
    padding: var(--spacing-8);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-slow);
    border: 1px solid var(--gray-100);
}

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

.feature-large {
    grid-column: span 2;
}

.feature-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-5);
}

.feature-icon svg {
    width: 28px;
    height: 28px;
}

.icon-blue { background: rgba(37, 99, 235, 0.1); color: var(--primary); }
.icon-green { background: rgba(16, 185, 129, 0.1); color: var(--success); }
.icon-purple { background: rgba(139, 92, 246, 0.1); color: #8b5cf6; }
.icon-orange { background: rgba(245, 158, 11, 0.1); color: var(--warning); }
.icon-red { background: rgba(239, 68, 68, 0.1); color: var(--error); }
.icon-teal { background: rgba(20, 184, 166, 0.1); color: #14b8a6; }

.feature-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-3);
}

.feature-card p {
    color: var(--gray-600);
    line-height: 1.7;
}

.feature-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
    margin-top: var(--spacing-5);
}

.tag {
    padding: var(--spacing-1) var(--spacing-3);
    background: var(--gray-100);
    color: var(--gray-600);
    font-size: var(--font-size-xs);
    font-weight: 500;
    border-radius: var(--radius-full);
}

/* =====================================================
   How It Works Section
   ===================================================== */
.how-it-works {
    background: var(--white);
}

.steps {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: var(--spacing-2);
}

.step {
    flex: 1;
    max-width: 320px;
    text-align: center;
}

.step-number {
    font-size: var(--font-size-6xl);
    font-weight: 800;
    color: var(--gray-100);
    line-height: 1;
    margin-bottom: var(--spacing-4);
}

.step-content {
    background: var(--white);
    padding: var(--spacing-8);
    border-radius: var(--radius-2xl);
    border: 1px solid var(--gray-200);
    transition: all var(--transition-slow);
}

.step-content:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
}

.step-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    color: var(--white);
    border-radius: var(--radius-xl);
    margin: 0 auto var(--spacing-5);
}

.step-icon svg {
    width: 28px;
    height: 28px;
}

.step h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-3);
}

.step p {
    color: var(--gray-600);
    line-height: 1.7;
}

.step-connector {
    width: 100px;
    color: var(--gray-300);
    margin-top: 140px;
}

/* =====================================================
   Algorithm Section
   ===================================================== */
.algorithm {
    background: var(--gradient-dark);
    color: var(--white);
}

.algorithm-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-16);
    align-items: center;
}

.algorithm-text .section-label {
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
}

.algorithm-text .section-title {
    color: var(--white);
}

.algorithm-text p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--spacing-8);
}

.algorithm-factors {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-8);
}

.factor {
    position: relative;
}

.factor-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-4) var(--spacing-5);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    position: relative;
    overflow: hidden;
}

.factor-bar::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: var(--width);
    background: var(--gradient-primary);
    opacity: 0.3;
}

.factor-label {
    font-size: var(--font-size-sm);
    font-weight: 500;
    position: relative;
}

.factor-value {
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--accent);
    position: relative;
}

.algorithm-note {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-3);
    padding: var(--spacing-4);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.7);
}

.algorithm-note svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    color: var(--accent);
}

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

.data-sources {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-4);
}

.source {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-6);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-slow);
}

.source:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-4px);
}

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

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

.source span {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: rgba(255, 255, 255, 0.8);
}

/* =====================================================
   Testimonials Section
   ===================================================== */
.testimonials {
    background: var(--gray-50);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-6);
}

.testimonial-card {
    background: var(--white);
    padding: var(--spacing-8);
    border-radius: var(--radius-2xl);
    border: 1px solid var(--gray-200);
    transition: all var(--transition-slow);
}

.testimonial-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.testimonial-card.featured {
    background: var(--gradient-primary);
    color: var(--white);
    border: none;
    transform: scale(1.05);
}

.testimonial-card.featured:hover {
    transform: scale(1.05) translateY(-4px);
}

.testimonial-rating {
    display: flex;
    gap: var(--spacing-1);
    margin-bottom: var(--spacing-4);
}

.testimonial-rating svg {
    width: 18px;
    height: 18px;
    color: var(--warning);
}

.testimonial-card.featured .testimonial-rating svg {
    color: #fcd34d;
}

.testimonial-text {
    font-size: var(--font-size-base);
    line-height: 1.8;
    margin-bottom: var(--spacing-6);
    color: var(--gray-700);
}

.testimonial-card.featured .testimonial-text {
    color: rgba(255, 255, 255, 0.9);
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.author-avatar {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-100);
    color: var(--gray-600);
    font-weight: 700;
    border-radius: var(--radius-full);
}

.testimonial-card.featured .author-avatar {
    background: rgba(255, 255, 255, 0.2);
    color: var(--white);
}

.author-name {
    display: block;
    font-weight: 600;
    color: var(--gray-900);
}

.testimonial-card.featured .author-name {
    color: var(--white);
}

.author-location {
    font-size: var(--font-size-sm);
    color: var(--gray-500);
}

.testimonial-card.featured .author-location {
    color: rgba(255, 255, 255, 0.7);
}

/* =====================================================
   Pricing Section
   ===================================================== */
.pricing {
    background: var(--white);
}

.pricing-cards {
    display: flex;
    justify-content: center;
    gap: var(--spacing-8);
    max-width: 800px;
    margin: 0 auto;
}

.pricing-card {
    flex: 1;
    max-width: 360px;
    background: var(--white);
    padding: var(--spacing-8);
    border-radius: var(--radius-2xl);
    border: 2px solid var(--gray-200);
    position: relative;
    transition: all var(--transition-slow);
}

.pricing-card:hover {
    border-color: var(--gray-300);
    box-shadow: var(--shadow-xl);
}

.pricing-card.featured {
    border-color: var(--primary);
    box-shadow: var(--shadow-xl), 0 0 40px rgb(37 99 235 / 0.15);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--spacing-2) var(--spacing-4);
    background: var(--primary);
    color: var(--white);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--radius-full);
}

.pricing-header {
    text-align: center;
    margin-bottom: var(--spacing-6);
    padding-bottom: var(--spacing-6);
    border-bottom: 1px solid var(--gray-200);
}

.pricing-header h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-2);
}

.pricing-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: var(--spacing-1);
}

.price-amount {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    color: var(--gray-900);
}

.price-period {
    font-size: var(--font-size-base);
    color: var(--gray-500);
}

.pricing-features {
    margin-bottom: var(--spacing-8);
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3) 0;
    color: var(--gray-700);
}

.pricing-features svg {
    width: 20px;
    height: 20px;
    color: var(--success);
    flex-shrink: 0;
}

/* =====================================================
   Download Section
   ===================================================== */
.download {
    background: var(--gradient-hero);
    color: var(--white);
    text-align: center;
}

.download-content {
    max-width: 600px;
    margin: 0 auto;
}

.download h2 {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    margin-bottom: var(--spacing-4);
}

.download p {
    font-size: var(--font-size-lg);
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-8);
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-8);
}

.store-button {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-4) var(--spacing-6);
    background: var(--black);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.store-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.store-button svg {
    width: 28px;
    height: 28px;
}

.store-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.store-label {
    font-size: var(--font-size-xs);
    color: var(--gray-400);
}

.store-name {
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.download-app-icon {
    display: flex;
    justify-content: center;
    margin-top: var(--spacing-4);
}

.download-icon-img {
    width: 140px;
    height: 140px;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-2xl);
    animation: floatIcon 4s ease-in-out infinite;
}

@keyframes floatIcon {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* =====================================================
   Footer
   ===================================================== */
.footer {
    background: var(--gray-900);
    color: var(--white);
    padding: var(--spacing-16) 0 var(--spacing-8);
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: var(--spacing-16);
    margin-bottom: var(--spacing-12);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--white);
    margin-bottom: var(--spacing-4);
}

.footer-brand p {
    color: var(--gray-400);
    margin-bottom: var(--spacing-6);
}

.footer-social {
    display: flex;
    gap: var(--spacing-3);
}

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    color: var(--gray-400);
    transition: all var(--transition-fast);
}

.footer-social a:hover {
    background: var(--primary);
    color: var(--white);
}

.footer-social svg {
    width: 18px;
    height: 18px;
}

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

.footer-column h4 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--gray-400);
    margin-bottom: var(--spacing-5);
}

.footer-column li {
    margin-bottom: var(--spacing-3);
}

.footer-column a {
    color: var(--gray-300);
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-8);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-credits p {
    font-size: var(--font-size-sm);
    color: var(--gray-500);
}

.footer-credits a {
    color: var(--gray-300);
}

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

.footer-attribution {
    font-size: var(--font-size-xs);
    margin-top: var(--spacing-2);
}

.footer-back {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-sm);
    color: var(--gray-400);
    transition: color var(--transition-fast);
}

.footer-back:hover {
    color: var(--white);
}

.footer-back svg {
    width: 18px;
    height: 18px;
}

/* =====================================================
   Responsive Design
   ===================================================== */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content {
        order: 1;
    }

    .hero-visual {
        order: 0;
        margin-bottom: var(--spacing-8);
    }

    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .phone-frame {
        width: 240px;
        height: 500px;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .feature-large {
        grid-column: span 2;
    }

    .algorithm-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .algorithm-text {
        order: 1;
    }

    .algorithm-visual {
        order: 0;
        margin-bottom: var(--spacing-8);
    }

    .testimonials-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }

    .testimonial-card.featured {
        transform: none;
    }

    .testimonial-card.featured:hover {
        transform: translateY(-4px);
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-brand {
        margin-bottom: var(--spacing-8);
    }

    .footer-logo {
        justify-content: center;
    }

    .footer-social {
        justify-content: center;
    }

    .footer-links {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --font-size-5xl: 2.5rem;
        --font-size-4xl: 2rem;
        --font-size-3xl: 1.5rem;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--white);
        padding: var(--spacing-6);
        box-shadow: var(--shadow-lg);
        gap: var(--spacing-4);
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links a {
        color: var(--gray-800);
        padding: var(--spacing-3) 0;
    }

    .nav-toggle {
        display: flex;
    }

    .hero {
        min-height: auto;
        padding: var(--spacing-20) 0 var(--spacing-12);
    }

    .hero-title {
        font-size: var(--font-size-4xl);
    }

    .hero-cta {
        flex-direction: column;
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-6);
    }

    .hero-scroll {
        display: none;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .feature-large {
        grid-column: span 1;
    }

    .steps {
        flex-direction: column;
        gap: var(--spacing-8);
    }

    .step-connector {
        display: none;
    }

    .step {
        max-width: 100%;
    }

    .step-number {
        font-size: var(--font-size-4xl);
    }

    .data-sources {
        grid-template-columns: repeat(2, 1fr);
    }

    .pricing-cards {
        flex-direction: column;
        align-items: center;
    }

    .download-buttons {
        flex-direction: column;
        align-items: center;
    }

    .footer-links {
        grid-template-columns: 1fr;
        gap: var(--spacing-6);
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-4);
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-4);
    }

    section {
        padding: var(--spacing-16) 0;
    }

    .phone-frame {
        width: 200px;
        height: 420px;
        border-radius: 30px;
    }

    .phone-frame::before {
        width: 60px;
        height: 20px;
    }

    .phone-screen {
        border-radius: 24px;
    }

    .app-card {
        padding: var(--spacing-3);
    }

    .step-content {
        padding: var(--spacing-6);
    }
}

/* =====================================================
   Animations & Utilities
   ===================================================== */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.slide-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.slide-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }
}

/* Focus styles */
:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* Selection */
::selection {
    background: var(--primary);
    color: var(--white);
}