/* ============================================
   FlowSync - Modern SaaS Landing Page
   Design System & Styles
   ============================================ */

/* CSS Variables - Alpine Frost Palette */
:root {
    /* Primary Colors */
    --primary-50: #EEF2FF;
    --primary-100: #E0E7FF;
    --primary-200: #C7D2FE;
    --primary-300: #A5B4FC;
    --primary-400: #818CF8;
    --primary-500: #6366F1;
    --primary-600: #4F46E5;
    --primary-700: #4338CA;
    --primary-800: #3730A3;
    --primary-900: #312E81;
    
    /* Neutral Colors */
    --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;
    
    /* Accent Colors */
    --accent-purple: #8B5CF6;
    --accent-pink: #EC4899;
    --accent-cyan: #06B6D4;
    
    /* Typography */
    --font-display: 'Plus Jakarta Sans', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-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-glow: 0 0 40px -10px var(--primary-500);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

/* 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-body);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--gray-50);
    overflow-x: hidden;
}

img, svg {
    display: block;
    max-width: 100%;
}

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

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

ul {
    list-style: none;
}

/* Container */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

/* ============================================
   Navigation
   ============================================ */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(248, 250, 252, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.6);
    transition: all var(--transition-base);
}

.nav.scrolled {
    background: rgba(248, 250, 252, 0.95);
    box-shadow: var(--shadow-sm);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--gray-900);
}

.logo svg {
    flex-shrink: 0;
}

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

.nav-links a {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--gray-600);
    transition: color var(--transition-fast);
}

.nav-links a:hover {
    color: var(--primary-600);
}

.nav-links a.btn {
    color: white;
}

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

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--gray-700);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    font-family: var(--font-display);
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    color: white;
    box-shadow: 0 4px 14px 0 rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px 0 rgba(99, 102, 241, 0.5);
}

.btn-secondary {
    background: white;
    color: var(--gray-700);
    border: 1px solid var(--gray-200);
}

.btn-secondary:hover {
    background: var(--gray-50);
    border-color: var(--gray-300);
}

.btn-lg {
    padding: var(--space-4) var(--space-6);
    font-size: 1rem;
}

.btn-full {
    width: 100%;
}

.btn-white {
    background: white;
    color: var(--primary-600);
}

.btn-white:hover {
    background: var(--gray-50);
    transform: translateY(-2px);
}

.btn-outline-white {
    background: transparent;
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.5);
}

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

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: calc(72px + var(--space-16)) var(--space-6) var(--space-16);
    overflow: hidden;
}

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

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: linear-gradient(135deg, var(--primary-400), var(--accent-purple));
    top: -200px;
    right: -100px;
    animation-delay: 0s;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, var(--accent-cyan), var(--primary-300));
    bottom: 10%;
    left: -100px;
    animation-delay: -7s;
}

.orb-3 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, var(--accent-pink), var(--primary-400));
    top: 40%;
    right: 20%;
    animation-delay: -14s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(30px, -30px) scale(1.05); }
    50% { transform: translate(-20px, 20px) scale(0.95); }
    75% { transform: translate(20px, 10px) scale(1.02); }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 640px;
    animation: fadeInUp 0.8s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-600);
    margin-bottom: var(--space-6);
    box-shadow: var(--shadow-sm);
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: linear-gradient(135deg, var(--accent-cyan), var(--primary-500));
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.7; transform: scale(1.1); }
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    color: var(--gray-900);
    margin-bottom: var(--space-6);
    letter-spacing: -0.02em;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary-500), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--gray-600);
    margin-bottom: var(--space-8);
    max-width: 520px;
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: var(--space-4);
    margin-bottom: var(--space-12);
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.stat {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.stat-number {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--gray-900);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--gray-500);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--gray-200);
}

/* Hero Visual - Dashboard Mockup */
.hero-visual {
    position: absolute;
    right: -5%;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1;
    animation: fadeInLeft 1s ease-out 0.3s both;
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateY(-50%) translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateY(-50%) translateX(0);
    }
}

.dashboard-mockup {
    width: 600px;
    background: white;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl), 0 0 60px -20px rgba(99, 102, 241, 0.3);
    overflow: hidden;
    border: 1px solid var(--gray-200);
}

.mockup-header {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4) var(--space-5);
    background: var(--gray-50);
    border-bottom: 1px solid var(--gray-200);
}

.mockup-dots {
    display: flex;
    gap: 6px;
}

.mockup-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--gray-300);
}

.mockup-dots span:first-child { background: #EF4444; }
.mockup-dots span:nth-child(2) { background: #F59E0B; }
.mockup-dots span:last-child { background: #10B981; }

.mockup-tabs {
    display: flex;
    gap: var(--space-4);
    margin-left: auto;
}

.mockup-tabs span {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--gray-400);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-md);
}

.mockup-tabs span.active {
    background: white;
    color: var(--gray-700);
    box-shadow: var(--shadow-sm);
}

.mockup-content {
    display: flex;
    height: 320px;
}

.mockup-sidebar {
    width: 60px;
    background: var(--gray-50);
    border-right: 1px solid var(--gray-200);
    padding: var(--space-4);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.sidebar-item {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-md);
    background: var(--gray-200);
}

.sidebar-item.active {
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
}

.mockup-main {
    flex: 1;
    padding: var(--space-5);
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
}

.chart-area {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    height: 140px;
    gap: var(--space-3);
}

.chart-bar {
    flex: 1;
    height: var(--height);
    background: linear-gradient(180deg, var(--primary-400), var(--primary-500));
    border-radius: var(--radius-md) var(--radius-md) 0 0;
    animation: growBar 1s ease-out 0.5s both;
}

@keyframes growBar {
    from { height: 0; }
    to { height: var(--height); }
}

.metrics-row {
    display: flex;
    gap: var(--space-4);
}

.metric-card {
    flex: 1;
    height: 80px;
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
}

/* ============================================
   Section Headers
   ============================================ */
.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto var(--space-16);
}

.section-tag {
    display: inline-block;
    padding: var(--space-2) var(--space-4);
    background: var(--primary-50);
    color: var(--primary-600);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-4);
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: var(--space-4);
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--gray-600);
    line-height: 1.7;
}

/* ============================================
   Features Section
   ============================================ */
.features {
    padding: var(--space-24) 0;
    background: white;
}

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

.feature-card {
    padding: var(--space-8);
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-2xl);
    transition: all var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-200);
}

.feature-card.featured {
    grid-column: span 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
    align-items: center;
}

.feature-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    color: white;
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-5);
}

.feature-card h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--space-3);
}

.feature-card p {
    font-size: 0.9375rem;
    color: var(--gray-600);
    line-height: 1.6;
}

.feature-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.mini-board {
    display: flex;
    gap: var(--space-3);
    padding: var(--space-4);
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

.mini-col {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    width: 80px;
}

.mini-card {
    height: 50px;
    background: var(--gray-100);
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-200);
}

.mini-card.active {
    background: linear-gradient(135deg, var(--primary-400), var(--primary-500));
    border-color: transparent;
}

/* ============================================
   Testimonials Section
   ============================================ */
.testimonials {
    padding: var(--space-24) 0;
    background: linear-gradient(180deg, var(--gray-50), white);
    overflow: hidden;
}

.testimonials-carousel {
    position: relative;
}

.testimonials-track {
    display: flex;
    gap: var(--space-6);
    transition: transform var(--transition-slow);
}

.testimonial-card {
    flex: 0 0 calc(50% - var(--space-3));
    padding: var(--space-8);
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-md);
}

.testimonial-stars {
    color: #F59E0B;
    font-size: 1.25rem;
    margin-bottom: var(--space-5);
    letter-spacing: 2px;
}

.testimonial-text {
    font-size: 1.0625rem;
    color: var(--gray-700);
    line-height: 1.7;
    margin-bottom: var(--space-6);
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.author-avatar {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-500), var(--accent-purple));
    color: white;
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 700;
    border-radius: 50%;
}

.author-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

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

.author-role {
    font-size: 0.875rem;
    color: var(--gray-500);
}

.carousel-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-6);
    margin-top: var(--space-10);
}

.carousel-btn {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: 50%;
    color: var(--gray-600);
    transition: all var(--transition-fast);
}

.carousel-btn:hover {
    background: var(--primary-50);
    border-color: var(--primary-300);
    color: var(--primary-600);
}

.carousel-dots {
    display: flex;
    gap: var(--space-2);
}

.carousel-dots .dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--gray-300);
    transition: all var(--transition-fast);
}

.carousel-dots .dot.active {
    background: var(--primary-500);
    width: 24px;
    border-radius: var(--radius-full);
}

/* ============================================
   Pricing Section
   ============================================ */
.pricing {
    padding: var(--space-24) 0;
    background: white;
}

.pricing-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-4);
    margin-bottom: var(--space-12);
}

.toggle-label {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--gray-500);
    transition: color var(--transition-fast);
}

.toggle-label.active {
    color: var(--gray-900);
}

.toggle-switch {
    width: 52px;
    height: 28px;
    background: var(--gray-200);
    border-radius: var(--radius-full);
    position: relative;
    transition: background var(--transition-base);
}

.toggle-switch.annual {
    background: var(--primary-500);
}

.toggle-thumb {
    position: absolute;
    top: 4px;
    left: 4px;
    width: 20px;
    height: 20px;
    background: white;
    border-radius: 50%;
    transition: transform var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.toggle-switch.annual .toggle-thumb {
    transform: translateX(24px);
}

.save-badge {
    display: inline-block;
    padding: 2px 8px;
    background: var(--primary-100);
    color: var(--primary-700);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-left: var(--space-2);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
    max-width: 1100px;
    margin: 0 auto;
}

.pricing-card {
    position: relative;
    padding: var(--space-8);
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-2xl);
    transition: all var(--transition-base);
}

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

.pricing-card.popular {
    background: white;
    border-color: var(--primary-200);
    box-shadow: var(--shadow-xl), 0 0 40px -10px rgba(99, 102, 241, 0.2);
    transform: scale(1.02);
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--space-1) var(--space-4);
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-full);
}

.pricing-header {
    margin-bottom: var(--space-6);
}

.pricing-header h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--space-2);
}

.pricing-desc {
    font-size: 0.9375rem;
    color: var(--gray-500);
}

.pricing-price {
    display: flex;
    align-items: baseline;
    gap: 2px;
    margin-bottom: var(--space-6);
}

.pricing-price .currency {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--gray-900);
}

.pricing-price .amount {
    font-family: var(--font-display);
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--gray-900);
    line-height: 1;
}

.pricing-price .period {
    font-size: 0.9375rem;
    color: var(--gray-500);
    margin-left: var(--space-1);
}

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

.pricing-features li {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) 0;
    font-size: 0.9375rem;
    color: var(--gray-600);
    border-bottom: 1px solid var(--gray-200);
}

.pricing-features li:last-child {
    border-bottom: none;
}

.pricing-features svg {
    flex-shrink: 0;
    color: var(--primary-500);
}

/* ============================================
   CTA Section
   ============================================ */
.cta {
    position: relative;
    padding: var(--space-24) 0;
    background: linear-gradient(135deg, var(--gray-900), #1a1a2e);
    overflow: hidden;
}

.cta-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.cta-bg .gradient-orb {
    opacity: 0.3;
}

.cta-bg .orb-1 {
    top: -100px;
    right: -100px;
    background: linear-gradient(135deg, var(--primary-500), var(--accent-purple));
}

.cta-bg .orb-2 {
    bottom: -100px;
    left: -100px;
    background: linear-gradient(135deg, var(--accent-cyan), var(--primary-400));
}

.cta-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 640px;
    margin: 0 auto;
}

.cta-content h2 {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    color: white;
    margin-bottom: var(--space-4);
    letter-spacing: -0.02em;
}

.cta-content p {
    font-size: 1.125rem;
    color: var(--gray-400);
    margin-bottom: var(--space-8);
}

.cta-buttons {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    margin-bottom: var(--space-6);
    flex-wrap: wrap;
}

.cta-note {
    font-size: 0.875rem;
    color: var(--gray-500);
}

/* ============================================
   Footer
   ============================================ */
.footer {
    padding: var(--space-20) 0 var(--space-8);
    background: var(--gray-50);
    border-top: 1px solid var(--gray-200);
}

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

.footer-brand .logo {
    margin-bottom: var(--space-4);
}

.footer-tagline {
    font-size: 0.9375rem;
    color: var(--gray-500);
    margin-bottom: var(--space-6);
    max-width: 280px;
}

.footer-social {
    display: flex;
    gap: var(--space-4);
}

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    color: var(--gray-500);
    transition: all var(--transition-fast);
}

.footer-social a:hover {
    background: var(--primary-50);
    border-color: var(--primary-200);
    color: var(--primary-600);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-8);
}

.footer-column h4 {
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-900);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-5);
}

.footer-column ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.footer-column a {
    font-size: 0.9375rem;
    color: var(--gray-500);
    transition: color var(--transition-fast);
}

.footer-column a:hover {
    color: var(--primary-600);
}

.footer-bottom {
    padding-top: var(--space-8);
    border-top: 1px solid var(--gray-200);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.875rem;
    color: var(--gray-500);
}

/* ============================================
   Responsive Design - Mobile First
   ============================================ */
@media (max-width: 1024px) {
    .hero-visual {
        position: relative;
        right: auto;
        top: auto;
        transform: none;
        margin-top: var(--space-12);
        animation: fadeInUp 1s ease-out 0.3s both;
    }
    
    .dashboard-mockup {
        width: 100%;
        max-width: 500px;
        margin: 0 auto;
    }
    
    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: calc(72px + var(--space-12));
    }
    
    .hero-content {
        max-width: 100%;
    }
    
    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .feature-card.featured {
        grid-column: span 2;
    }
    
    .testimonial-card {
        flex: 0 0 calc(100% - var(--space-3));
    }
    
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .pricing-card.popular {
        transform: none;
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: var(--space-6);
        gap: var(--space-4);
        border-bottom: 1px solid var(--gray-200);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }
    
    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .feature-card.featured {
        grid-template-columns: 1fr;
    }
    
    .feature-visual {
        order: -1;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
    }
    
    .pricing-card.popular {
        order: -1;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--space-12);
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .hero-stats {
        flex-direction: column;
        gap: var(--space-6);
    }
    
    .stat-divider {
        width: 60px;
        height: 1px;
    }
    
    .hero-cta {
        flex-direction: column;
        width: 100%;
    }
    
    .hero-cta .btn {
        width: 100%;
    }
    
    .cta-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .cta-buttons .btn {
        width: 100%;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }
    
    .dashboard-mockup {
        transform: scale(0.9);
    }
}

/* ============================================
   Scroll Animations
   ============================================ */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger children animations */
.stagger-children > * {
    opacity: 0;
    transform: translateY(20px);
}

.stagger-children.visible > * {
    opacity: 1;
    transform: translateY(0);
}

.stagger-children.visible > *:nth-child(1) { transition-delay: 0s; }
.stagger-children.visible > *:nth-child(2) { transition-delay: 0.1s; }
.stagger-children.visible > *:nth-child(3) { transition-delay: 0.2s; }
.stagger-children.visible > *:nth-child(4) { transition-delay: 0.3s; }
.stagger-children.visible > *:nth-child(5) { transition-delay: 0.4s; }
.stagger-children.visible > *:nth-child(6) { transition-delay: 0.5s; }