/* ============================================
   BulkEmailVerification - Modern UI/UX Styles
   ============================================ */

/* ============================================
   CSS Variables & Root Styles
   ============================================ */
:root {
    /* Primary Colors */
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --primary-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    
    /* Secondary Colors */
    --secondary-color: #10b981;
    --secondary-dark: #059669;
    --secondary-light: #34d399;
    
    /* Neutral Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-dark: #111827;
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    
    /* Status Colors */
    --success-color: #10b981;
    --error-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #3b82f6;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --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: 2rem;
    --font-size-4xl: 2.5rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

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

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

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

ul {
    list-style: none;
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

.lead {
    font-size: var(--font-size-lg);
    line-height: 1.8;
}

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

/* ============================================
   Container & Layout
   ============================================ */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section-padding {
    padding: var(--spacing-2xl) 0;
}

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

.bg-light {
    background-color: var(--bg-secondary);
}

.bg-gradient {
    background: linear-gradient(135deg, #f9fafb 0%, #e5e7eb 100%);
}

/* ============================================
   Section Headers
   ============================================ */
.section-header {
    margin-bottom: var(--spacing-xl);
}

.section-tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    color: var(--primary-color);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.75rem 1.5rem;
    font-size: var(--font-size-base);
    font-weight: 600;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    cursor: pointer;
    text-align: center;
    white-space: nowrap;
}

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

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

.btn-secondary {
    background: white;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

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

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--text-secondary);
}

.btn-outline:hover {
    background: var(--text-primary);
    color: white;
    border-color: var(--text-primary);
}

.btn-text {
    background: transparent;
    color: var(--text-primary);
    padding: 0.5rem 1rem;
}

.btn-text:hover {
    color: var(--bg-secondary);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: var(--font-size-lg);
}

/* ============================================
   Navigation
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    transition: var(--transition-base);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) 0;
}

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

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

.brand-name {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--text-primary);
}

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

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

.nav-links a {
    color: var(--text-primary);
    font-weight: 500;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-gradient);
    transition: var(--transition-base);
}

.nav-links a:hover::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    padding: var(--spacing-xs);
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition-base);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    overflow: hidden;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
    width: 100%;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
    overflow: hidden;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.3;
    animation: float 20s ease-in-out infinite;
}

.gradient-orb.orb-1 {
    width: 500px;
    height: 500px;
    background: var(--primary-gradient);
    top: -200px;
    right: -100px;
    animation-delay: 0s;
}

.gradient-orb.orb-2 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, #8b5cf6 0%, #ec4899 100%);
    bottom: -100px;
    left: -150px;
    animation-delay: 7s;
}

.gradient-orb.orb-3 {
    width: 350px;
    height: 350px;
    background: linear-gradient(135deg, #10b981 0%, #3b82f6 100%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: 14s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.1); }
    66% { transform: translate(-30px, 30px) scale(0.9); }
}

.hero-content {
    max-width: 100%;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: white;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
}

.hero-badge i {
    color: var(--success-color);
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.hero-note {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: rgba(99, 102, 241, 0.05);
    border-left: 3px solid var(--primary-color);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.hero-note i {
    color: var(--primary-color);
    margin-top: 2px;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.hero-right-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.hero-visual {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.dashboard-mockup {
    width: 100%;
    max-width: 500px;
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    animation: float-gentle 6s ease-in-out infinite;
}

@keyframes float-gentle {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

.mockup-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: linear-gradient(135deg, #f9fafb 0%, #e5e7eb 100%);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

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

.mockup-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #d1d5db;
}

.mockup-dots span:nth-child(1) { background: #ef4444; }
.mockup-dots span:nth-child(2) { background: #f59e0b; }
.mockup-dots span:nth-child(3) { background: #10b981; }

.mockup-title {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-secondary);
}

.mockup-content {
    padding: var(--spacing-xl);
}

.verification-progress {
    text-align: center;
}

.progress-ring {
    position: relative;
    width: 200px;
    height: 200px;
    margin: 0 auto var(--spacing-lg);
}

.progress-ring svg {
    transform: rotate(-90deg);
}

.progress-ring-circle {
    fill: none;
    stroke-width: 8;
}

.progress-ring-circle:first-child {
    stroke: #e5e7eb;
}

.progress-ring-circle.progress-ring-fill {
    stroke: url(#gradient);
    stroke-dasharray: 283;
    stroke-dashoffset: 17;
    animation: progress-animation 2s ease-out forwards;
}

@keyframes progress-animation {
    from { stroke-dashoffset: 283; }
    to { stroke-dashoffset: 17; }
}

.progress-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

.progress-percent {
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--primary-color);
}

.progress-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.verification-stats {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

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

.vstat.valid i { color: var(--success-color); }
.vstat.invalid i { color: var(--error-color); }
.vstat.risky i { color: var(--warning-color); }

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    animation: bounce 2s ease-in-out infinite;
}

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

.mouse {
    width: 24px;
    height: 40px;
    border: 2px solid var(--text-secondary);
    border-radius: 12px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 8px;
    background: var(--text-secondary);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s ease-in-out infinite;
}

@keyframes scroll {
    0% { transform: translateX(-50%) translateY(0); opacity: 1; }
    100% { transform: translateX(-50%) translateY(16px); opacity: 0; }
}

/* ============================================
   Animation Classes
   ============================================ */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.6s ease forwards;
}

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

.fade-in {
    opacity: 0;
    animation: fadeIn 0.8s ease forwards;
}

@keyframes fadeIn {
    to { opacity: 1; }
}

.fade-in-left {
    opacity: 0;
    transform: translateX(-30px);
    animation: fadeInLeft 0.6s ease forwards;
}

@keyframes fadeInLeft {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.fade-in-right {
    opacity: 0;
    transform: translateX(30px);
    animation: fadeInRight 0.6s ease forwards;
}

@keyframes fadeInRight {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

[data-delay="0"] { animation-delay: 0ms; }
[data-delay="100"] { animation-delay: 100ms; }
[data-delay="200"] { animation-delay: 200ms; }
[data-delay="300"] { animation-delay: 300ms; }
[data-delay="400"] { animation-delay: 400ms; }
[data-delay="500"] { animation-delay: 500ms; }

/* Continue in next part... */

/* ============================================
   Why Matters Section
   ============================================ */
.why-matters {
    background: white;
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.why-card {
    padding: var(--spacing-xl);
    background: white;
    border: 2px solid #e5e7eb;
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.why-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-light);
}

.why-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    font-size: 1.5rem;
}

.why-icon.bounce-rate {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.1) 0%, rgba(239, 68, 68, 0.2) 100%);
    color: #ef4444;
}

.why-icon.inbox-reach {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(59, 130, 246, 0.2) 100%);
    color: #3b82f6;
}

.why-icon.reputation {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1) 0%, rgba(16, 185, 129, 0.2) 100%);
    color: #10b981;
}

.why-icon.roi {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1) 0%, rgba(245, 158, 11, 0.2) 100%);
    color: #f59e0b;
}

.why-card h3 {
    margin-bottom: var(--spacing-sm);
}

.why-metric {
    display: flex;
    align-items: baseline;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid #e5e7eb;
}

.metric-value {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--primary-color);
}

.metric-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.why-cta {
    margin-top: var(--spacing-xl);
}

.cta-text {
    font-size: var(--font-size-lg);
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

/* ============================================
   Advantage Section
   ============================================ */
.advantage-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.advantage-content {
    max-width: 600px;
}

.advantage-points {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

.advantage-point {
    display: flex;
    gap: var(--spacing-md);
}

.point-icon {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    border-radius: var(--radius-lg);
    color: var(--primary-color);
    font-size: 1.25rem;
}

.point-content h4 {
    margin-bottom: var(--spacing-xs);
}

.advantage-cta {
    margin-top: var(--spacing-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.cta-highlight {
    width: 100%;
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.advantage-visual {
    position: relative;
}

.comparison-card {
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    margin-bottom: var(--spacing-lg);
}

.comparison-header {
    padding: var(--spacing-md);
    background: var(--primary-gradient);
    color: white;
    text-align: center;
}

.comparison-header h4 {
    margin: 0;
    font-size: var(--font-size-lg);
}

.comparison-body {
    padding: var(--spacing-md);
}

.comparison-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm);
    border-bottom: 1px solid #e5e7eb;
}

.comparison-row:last-child {
    border-bottom: none;
}

.comparison-row.winner .comparison-value {
    color: var(--primary-color);
    font-weight: 600;
}

.comparison-row.winner .comparison-value i {
    color: #f59e0b;
}

.stats-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.stat-card {
    padding: var(--spacing-lg);
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
}

.stat-card i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.stat-card .stat-number {
    font-size: var(--font-size-2xl);
}

.stat-card .stat-label {
    font-size: var(--font-size-sm);
}

/* ============================================
   How It Works Section
   ============================================ */
.steps-container {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.step {
    flex: 1;
    max-width: 250px;
    text-align: center;
}

.step-number {
    display: inline-block;
    width: 50px;
    height: 50px;
    line-height: 50px;
    background: var(--primary-gradient);
    color: white;
    border-radius: 50%;
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.step-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    border-radius: var(--radius-xl);
    font-size: 2rem;
    color: var(--primary-color);
}

.step h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-sm);
}

.step p {
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-md);
}

.step-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    justify-content: center;
}

.feature-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 8px;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
    font-size: 0.75rem;
    border-radius: var(--radius-sm);
}

.step-connector {
    flex-shrink: 0;
    position: relative;
    display: flex;
    align-items: center;
    padding-top: 80px;
}

.connector-line {
    width: 50px;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color) 0%, var(--primary-light) 100%);
}

.step-connector i {
    color: var(--primary-color);
}

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

/* ============================================
   Features Section
   ============================================ */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.feature-card {
    padding: var(--spacing-xl);
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.feature-icon {
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    font-size: 1.75rem;
    margin-bottom: var(--spacing-md);
}

.feature-icon.bulk {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(99, 102, 241, 0.2) 100%);
    color: #6366f1;
}

.feature-icon.catchall {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1) 0%, rgba(245, 158, 11, 0.2) 100%);
    color: #f59e0b;
}

.feature-icon.reports {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(59, 130, 246, 0.2) 100%);
    color: #3b82f6;
}

.feature-icon.security {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1) 0%, rgba(16, 185, 129, 0.2) 100%);
    color: #10b981;
}

.feature-icon.api {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.1) 0%, rgba(139, 92, 246, 0.2) 100%);
    color: #8b5cf6;
}

.feature-icon.speed {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.1) 0%, rgba(239, 68, 68, 0.2) 100%);
    color: #ef4444;
}

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

.feature-list {
    margin-top: var(--spacing-md);
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) 0;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.feature-list i {
    color: var(--success-color);
    font-size: 0.875rem;
}

.features-cta {
    margin-top: var(--spacing-xl);
}

/* ============================================
   Pricing Section
   ============================================ */
.pricing-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.toggle-label {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
}

.switch {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 34px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: var(--transition-base);
    border-radius: 34px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 26px;
    width: 26px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: var(--transition-base);
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--primary-color);
}

input:checked + .slider:before {
    transform: translateX(26px);
}

.save-badge {
    display: inline-block;
    padding: 2px 8px;
    background: var(--success-color);
    color: white;
    font-size: 0.75rem;
    border-radius: var(--radius-sm);
    margin-left: var(--spacing-xs);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.pricing-card {
    position: relative;
    padding: var(--spacing-xl);
    background: white;
    border: 2px solid #e5e7eb;
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.pricing-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.pricing-card.featured {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 4px 16px;
    background: var(--primary-gradient);
    color: white;
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--radius-full);
}

.pricing-header {
    text-align: center;
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid #e5e7eb;
    margin-bottom: var(--spacing-md);
}

.pricing-header h3 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-xs);
}

.pricing-description {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.pricing-price {
    text-align: center;
    margin: var(--spacing-lg) 0;
}

.pricing-price .currency {
    font-size: var(--font-size-xl);
    font-weight: 600;
    vertical-align: super;
}

.pricing-price .amount {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
}

.pricing-price .period {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.pricing-features {
    margin: var(--spacing-lg) 0;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) 0;
    font-size: var(--font-size-sm);
}

.pricing-features i {
    color: var(--success-color);
}

.pricing-card .btn {
    width: 100%;
    justify-content: center;
    margin-top: var(--spacing-md);
}

.pricing-calculator {
    margin: var(--spacing-2xl) 0;
}

.calculator-card {
    max-width: 600px;
    margin: 0 auto;
    padding: var(--spacing-xl);
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

.calculator-card h3 {
    text-align: center;
    margin-bottom: var(--spacing-sm);
}

.calculator-card > p {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.calculator-input {
    margin-bottom: var(--spacing-lg);
}

.calculator-input label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.calculator-input input[type="range"] {
    width: 100%;
    height: 8px;
    border-radius: var(--radius-sm);
    background: #e5e7eb;
    outline: none;
    -webkit-appearance: none;
}

.calculator-input input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--primary-gradient);
    cursor: pointer;
}

.volume-display {
    text-align: center;
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary-color);
}

.calculator-result {
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(139, 92, 246, 0.05) 100%);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
}

.result-breakdown {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xs);
}

.result-price {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--primary-color);
}

.result-note {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.calculator-card .btn {
    width: 100%;
    justify-content: center;
}

.pricing-features-comparison h3 {
    margin-bottom: var(--spacing-lg);
}

.comparison-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.comparison-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md);
    background: white;
    border-radius: var(--radius-lg);
    text-align: center;
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.comparison-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.pricing-cta {
    margin-top: var(--spacing-xl);
}

/* ============================================
   Use Cases Section
   ============================================ */
.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.use-case-card {
    padding: var(--spacing-xl);
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.use-case-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.use-case-icon {
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    font-size: 1.75rem;
    margin-bottom: var(--spacing-md);
}

.use-case-icon.marketers {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.1) 0%, rgba(239, 68, 68, 0.2) 100%);
    color: #ef4444;
}

.use-case-icon.saas {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(99, 102, 241, 0.2) 100%);
    color: #6366f1;
}

.use-case-icon.crm {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1) 0%, rgba(16, 185, 129, 0.2) 100%);
    color: #10b981;
}

.use-case-icon.enterprise {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.1) 0%, rgba(139, 92, 246, 0.2) 100%);
    color: #8b5cf6;
}

.use-case-card h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
}

.use-case-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
    margin: var(--spacing-md) 0;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs);
    background: rgba(99, 102, 241, 0.05);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.stat-item i {
    color: var(--primary-color);
}

.use-case-benefits {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid #e5e7eb;
}

.use-case-benefits li {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) 0;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.use-case-benefits i {
    color: var(--success-color);
}

.use-cases-cta {
    margin-top: var(--spacing-xl);
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* ============================================
   Testimonials Section
   ============================================ */
.testimonials-carousel {
    position: relative;
    max-width: 900px;
    margin: 0 auto var(--spacing-xl);
}

.testimonial-slide {
    display: none;
}

.testimonial-slide.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

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

.testimonial-rating {
    display: flex;
    gap: 4px;
    margin-bottom: var(--spacing-md);
    color: #f59e0b;
}

.testimonial-card blockquote {
    font-size: var(--font-size-lg);
    line-height: 1.8;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid #e5e7eb;
}

.author-avatar {
    width: 60px;
    height: 60px;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
}

.author-info h4 {
    margin-bottom: 4px;
    font-size: var(--font-size-base);
}

.author-info p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0;
}

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

.testimonial-metrics .metric {
    text-align: center;
    padding: var(--spacing-md);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(139, 92, 246, 0.05) 100%);
    border-radius: var(--radius-lg);
}

.carousel-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.carousel-btn {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    border: 2px solid #e5e7eb;
    border-radius: 50%;
    color: var(--text-primary);
    transition: all var(--transition-base);
    cursor: pointer;
}

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

.carousel-dots {
    display: flex;
    gap: var(--spacing-sm);
}

.dot {
    width: 12px;
    height: 12px;
    background: #e5e7eb;
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition-base);
}

.dot.active {
    background: var(--primary-color);
    width: 32px;
    border-radius: var(--radius-full);
}

.testimonials-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    max-width: 900px;
    margin: 0 auto;
}

.stat-box {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.stat-box .stat-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-gradient);
    border-radius: var(--radius-lg);
    color: white;
    font-size: 1.5rem;
}

.stat-content .stat-number {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
}

.stat-content .stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* ============================================
   Integrations Section
   ============================================ */
.integrations-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
    margin-bottom: var(--spacing-2xl);
}

.integration-hub {
    position: relative;
    width: 100%;
    height: 500px;
}

.hub-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120px;
    height: 120px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    background: white;
    border: 3px solid var(--primary-color);
    border-radius: 50%;
    box-shadow: var(--shadow-xl);
    z-index: 10;
}

.hub-center img {
    width: 50px;
    height: 50px;
}

.hub-center span {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary-color);
}

.hub-connection {
    position: absolute;
}

.connection-line {
    width: 100px;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color) 0%, transparent 100%);
    position: absolute;
}

.integration-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    border: 2px solid #e5e7eb;
    border-radius: 50%;
    font-size: 1.25rem;
    box-shadow: var(--shadow-md);
    animation: pulse 2s ease-in-out infinite;
}

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

.hub-connection.connection-1 {
    top: 10%;
    right: 20%;
}

.hub-connection.connection-1 .connection-line {
    transform: rotate(-45deg);
    transform-origin: left center;
}

.hub-connection.connection-1 .integration-icon {
    position: absolute;
    right: -70px;
    top: -30px;
    color: #ffe01b;
}

.hub-connection.connection-2 {
    top: 10%;
    left: 20%;
}

.hub-connection.connection-2 .connection-line {
    transform: rotate(45deg);
    transform-origin: right center;
}

.hub-connection.connection-2 .integration-icon {
    position: absolute;
    left: -70px;
    top: -30px;
    color: #3b82f6;
}

.hub-connection.connection-3 {
    right: 10%;
    top: 40%;
}

.hub-connection.connection-3 .connection-line {
    transform: rotate(0deg);
}

.hub-connection.connection-3 .integration-icon {
    position: absolute;
    right: -70px;
    color: #ff7a59;
}

.hub-connection.connection-4 {
    left: 10%;
    top: 40%;
}

.hub-connection.connection-4 .connection-line {
    transform: rotate(180deg);
}

.hub-connection.connection-4 .integration-icon {
    position: absolute;
    left: -70px;
    color: #00a1df;
}

.hub-connection.connection-5 {
    bottom: 15%;
    right: 20%;
}

.hub-connection.connection-5 .connection-line {
    transform: rotate(45deg);
    transform-origin: left center;
}

.hub-connection.connection-5 .integration-icon {
    position: absolute;
    right: -70px;
    bottom: -30px;
    color: #ff4a00;
}

.hub-connection.connection-6 {
    bottom: 15%;
    left: 20%;
}

.hub-connection.connection-6 .connection-line {
    transform: rotate(-45deg);
    transform-origin: right center;
}

.hub-connection.connection-6 .integration-icon {
    position: absolute;
    left: -70px;
    bottom: -30px;
    color: #8b5cf6;
}

.integrations-info h3 {
    margin-bottom: var(--spacing-md);
}

.integration-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

.integration-item {
    display: flex;
    gap: var(--spacing-md);
}

.integration-item .item-icon {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-gradient);
    border-radius: var(--radius-lg);
    color: white;
}

.item-content h4 {
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-base);
}

.item-content p {
    font-size: var(--font-size-sm);
    margin: 0;
}

.integration-features {
    display: flex;
    gap: var(--spacing-sm);
    margin: var(--spacing-lg) 0;
    flex-wrap: wrap;
}

.feature-badge {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--radius-full);
}

.integration-cta {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.api-showcase {
    margin-top: var(--spacing-2xl);
}

.api-showcase h3 {
    margin-bottom: var(--spacing-sm);
}

.api-showcase > p {
    margin-bottom: var(--spacing-lg);
}

.code-example {
    max-width: 800px;
    margin: 0 auto;
    background: #1e293b;
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.code-tabs {
    display: flex;
    gap: 0;
    background: #0f172a;
    padding: var(--spacing-sm);
}

.code-tab {
    padding: var(--spacing-xs) var(--spacing-md);
    background: transparent;
    color: #94a3b8;
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: var(--transition-base);
    cursor: pointer;
}

.code-tab.active {
    background: #1e293b;
    color: white;
}

.code-content {
    padding: var(--spacing-lg);
}

.code-block {
    display: none;
    margin: 0;
}

.code-block.active {
    display: block;
}

.code-block code {
    font-family: 'Courier New', monospace;
    font-size: var(--font-size-sm);
    line-height: 1.6;
    color: #94a3b8;
}

/* ============================================
   Final CTA Section
   ============================================ */
.final-cta {
    position: relative;
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    color: white;
    overflow: hidden;
}

.cta-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
}

.final-cta .container {
    position: relative;
    z-index: 1;
}

.cta-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-gradient);
    border-radius: 50%;
    font-size: 2rem;
}

.cta-content h2 {
    color: white;
    margin-bottom: var(--spacing-md);
}

.cta-lead {
    font-size: var(--font-size-xl);
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-xl);
}

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

.benefit-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-base);
    font-weight: 600;
    color: white;
}

.benefit-item i {
    color: var(--success-color);
}

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

.cta-note {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--spacing-xl);
}

.cta-note i {
    color: var(--success-color);
}

.trust-signals {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    flex-wrap: wrap;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.8);
}

.trust-item i {
    color: var(--success-color);
}

.cta-tagline {
    margin-top: var(--spacing-xl);
}

.cta-tagline h3 {
    font-size: var(--font-size-3xl);
    text-align: center;
    margin: 0;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: #0f172a;
    color: rgba(255, 255, 255, 0.8);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr repeat(4, 1fr);
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-section h4 {
    color: white;
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
}

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

.footer-logo {
    height: 40px;
    margin-bottom: var(--spacing-sm);
}

.footer-tagline {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: white;
    margin-bottom: var(--spacing-sm);
}

.footer-description {
    font-size: var(--font-size-sm);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.trust-badges {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.trust-badges .badge {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
}

.trust-badges i {
    color: var(--success-color);
}

.footer-section ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.footer-section ul li a {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition-base);
}

.footer-section ul li a:hover {
    color: white;
    padding-left: 4px;
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.social-links a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transition: var(--transition-base);
}

.social-links a:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

.newsletter h5 {
    color: white;
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-sm);
}

.newsletter-form {
    display: flex;
    gap: var(--spacing-xs);
}

.newsletter-form input {
    flex: 1;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    color: white;
    font-size: var(--font-size-sm);
}

.newsletter-form input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.newsletter-form .btn {
    padding: var(--spacing-xs) var(--spacing-md);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.6);
}

.footer-note {
    font-style: italic;
}

/* ============================================
   Back to Top Button
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-gradient);
    color: white;
    border-radius: 50%;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition-base);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    pointer-events: all;
}

.back-to-top:hover {
    transform: translateY(-5px);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
        text-align: center;
    }
    
    .hero-content {
        max-width: 100%;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .hero-stats {
        grid-template-columns: repeat(3, 1fr);
        justify-content: center;
    }
    
    .advantage-wrapper,
    .integrations-content {
        grid-template-columns: 1fr;
    }
    
    .steps-container {
        flex-direction: column;
    }
    
    .step-connector {
        transform: rotate(90deg);
        padding: var(--spacing-md) 0;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --font-size-4xl: 2rem;
        --font-size-3xl: 1.75rem;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        flex-direction: column;
        background: white;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: all var(--transition-base);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }
    
    .nav-links {
        flex-direction: column;
        width: 100%;
    }
    
    .nav-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .nav-actions .btn {
        width: 100%;
        justify-content: center;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .hero-stats {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .why-grid,
    .features-grid,
    .pricing-grid,
    .use-cases-grid {
        grid-template-columns: 1fr;
    }
    
    .testimonials-stats,
    .testimonial-metrics {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }
    
    .integration-hub {
        height: 400px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .section-padding {
        padding: var(--spacing-xl) 0;
    }
    
    .btn-lg {
        padding: 0.75rem 1.5rem;
        font-size: var(--font-size-base);
    }
    
    .hero-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .hero-actions .btn {
        width: 100%;
        justify-content: center;
    }
}