/* ========================================
   Share 365 - Microsoft 365 Family Landing Page
   Custom CSS with Animations & Responsive Design
   ======================================== */

/* ========================================
   CSS Variables & Reset
   ======================================== */
:root {
    /* Microsoft Brand Colors */
    --primary-blue: #0078D4;
    --primary-blue-dark: #005A9E;
    --primary-blue-light: #50A0D8;
    --accent-orange: #FFB900;
    --accent-green: #107C10;
    --accent-red: #D13438;
    --accent-purple: #5E5CE6;
    
    /* Neutral Colors */
    --white: #FFFFFF;
    --gray-50: #F8F9FA;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;
    
    /* Typography */
    --font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    --font-size-base: 16px;
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
    
    /* 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), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Z-Index */
    --z-loading: 9999;
    --z-navbar: 1000;
    --z-dropdown: 900;
    --z-modal: 800;
}

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

html {
    scroll-behavior: smooth;
    font-size: var(--font-size-base);
}

body {
    font-family: var(--font-family);
    font-weight: var(--font-weight-normal);
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--white);
    overflow-x: hidden;
}

/* ========================================
   Loading Screen
   ======================================== */
#loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-purple) 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: var(--z-loading);
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

#loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--white);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ========================================
   Typography
   ======================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    color: var(--gray-900);
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
}

h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
}

h3 {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
}

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

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

a:hover {
    color: var(--primary-blue-dark);
}

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

.section {
    padding: var(--spacing-3xl) 0;
    position: relative;
    overflow: hidden;
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--spacing-2xl);
}

.section-label {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-purple) 100%);
    color: var(--white);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-md);
}

.section-title {
    margin-bottom: var(--spacing-md);
}

.section-description {
    font-size: 1.125rem;
    color: var(--gray-600);
    line-height: 1.8;
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: var(--font-weight-semibold);
    text-align: center;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn i {
    font-size: 1.125rem;
    z-index: 1;
}

.btn span {
    z-index: 1;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

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

.btn-primary-nav {
    background: var(--primary-blue);
    color: var(--white);
    padding: 0.5rem 1.25rem;
}

.btn-primary-nav:hover {
    background: var(--primary-blue-dark);
}

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

.btn-secondary:hover {
    background: var(--primary-blue);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn-cta {
    background: linear-gradient(135deg, var(--accent-orange) 0%, #FFA500 100%);
    color: var(--white);
    box-shadow: var(--shadow-lg);
    font-size: 1.25rem;
    padding: 1.25rem 2.5rem;
}

.btn-cta:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: var(--shadow-2xl);
}

.btn-cta-secondary {
    background: var(--white);
    color: var(--primary-blue);
    border: 3px solid var(--white);
    font-size: 1.125rem;
    padding: 1rem 2rem;
}

.btn-cta-secondary:hover {
    background: transparent;
    border-color: var(--white);
    color: var(--white);
}

.btn-newsletter {
    background: var(--primary-blue);
    color: var(--white);
    padding: 0.875rem 1.75rem;
    white-space: nowrap;
}

.btn-newsletter:hover {
    background: var(--primary-blue-dark);
    transform: translateX(3px);
}

/* ========================================
   Navigation
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: var(--z-navbar);
    transition: all var(--transition-base);
}

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

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--primary-blue);
}

.nav-brand i {
    font-size: 2rem;
}

.nav-menu {
    display: flex;
    gap: var(--spacing-lg);
    list-style: none;
    align-items: center;
}

.nav-link {
    color: var(--gray-700);
    font-weight: var(--font-weight-semibold);
    position: relative;
    transition: color var(--transition-fast);
}

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

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

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

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    z-index: 1001;
}

.hamburger span {
    display: block;
    width: 28px;
    height: 3px;
    background: var(--primary-blue);
    border-radius: 3px;
    transition: all var(--transition-base);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(8px, -8px);
}

/* ========================================
   Hero Section
   ======================================== */
.header {
    position: relative;
    min-height: 100vh;
}

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

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #E3F2FD 0%, #F3E5F5 100%);
    z-index: -1;
}

.floating-shapes {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
    animation: float 20s infinite ease-in-out;
}

.shape-1 {
    width: 300px;
    height: 300px;
    background: var(--primary-blue);
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.shape-2 {
    width: 200px;
    height: 200px;
    background: var(--accent-orange);
    top: 60%;
    right: 15%;
    animation-delay: -5s;
}

.shape-3 {
    width: 150px;
    height: 150px;
    background: var(--accent-purple);
    bottom: 15%;
    left: 20%;
    animation-delay: -10s;
}

.shape-4 {
    width: 250px;
    height: 250px;
    background: var(--accent-green);
    top: 30%;
    right: 25%;
    animation-delay: -15s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    25% {
        transform: translateY(-30px) rotate(90deg);
    }
    50% {
        transform: translateY(-60px) rotate(180deg);
    }
    75% {
        transform: translateY(-30px) rotate(270deg);
    }
}

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

.hero-content {
    z-index: 1;
}

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

.gradient-text {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-purple) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--gray-600);
    margin-bottom: var(--spacing-xl);
    line-height: 1.8;
}

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

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

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

.stat i {
    font-size: 2rem;
    color: var(--primary-blue);
}

.stat div {
    display: flex;
    flex-direction: column;
}

.stat strong {
    font-size: 1.5rem;
    color: var(--gray-900);
}

.stat span {
    font-size: 0.875rem;
    color: var(--gray-600);
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.device-mockup {
    position: relative;
    animation: float-device 6s ease-in-out infinite;
}

.device-mockup i {
    color: var(--primary-blue);
    filter: drop-shadow(var(--shadow-2xl));
}

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

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-indicator a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--white);
    box-shadow: var(--shadow-lg);
    color: var(--primary-blue);
    font-size: 1.25rem;
}

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

/* ========================================
   About Section
   ======================================== */
.section-about {
    background: var(--white);
}

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

.about-card {
    padding: var(--spacing-xl);
    background: var(--gray-50);
    border-radius: var(--radius-xl);
    text-align: center;
    transition: all var(--transition-base);
    border: 2px solid transparent;
}

.about-card:hover {
    background: var(--white);
    border-color: var(--primary-blue);
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.card-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-purple) 100%);
    border-radius: var(--radius-full);
    font-size: 2rem;
    color: var(--white);
    transition: transform var(--transition-base);
}

.about-card:hover .card-icon {
    transform: scale(1.1) rotate(5deg);
}

.about-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.about-card p {
    color: var(--gray-600);
    line-height: 1.8;
}

/* ========================================
   Benefits Section
   ======================================== */
.section-benefits {
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--gray-100) 100%);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.benefit-item {
    position: relative;
    padding: var(--spacing-xl);
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    overflow: hidden;
}

.benefit-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-blue) 0%, var(--accent-purple) 100%);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-slow);
}

.benefit-item:hover::before {
    transform: scaleX(1);
}

.benefit-item:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-2xl);
}

.benefit-number {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    font-size: 3rem;
    font-weight: var(--font-weight-bold);
    color: var(--gray-100);
    line-height: 1;
}

.benefit-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-purple) 100%);
    border-radius: var(--radius-lg);
    font-size: 1.75rem;
    color: var(--white);
    margin-bottom: var(--spacing-md);
}

.benefit-item h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--gray-900);
}

.benefit-item p {
    color: var(--gray-600);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.benefit-badge {
    display: inline-block;
    padding: 0.375rem 0.875rem;
    background: linear-gradient(135deg, var(--accent-orange) 0%, #FFA500 100%);
    color: var(--white);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: var(--font-weight-semibold);
}

/* ========================================
   How To Section
   ======================================== */
.section-how-to {
    background: var(--white);
}

.steps-container {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
}

.step {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
    position: relative;
}

.step-number {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-purple) 100%);
    border-radius: var(--radius-full);
    font-size: 2rem;
    font-weight: var(--font-weight-bold);
    color: var(--white);
    box-shadow: var(--shadow-xl);
    position: relative;
    z-index: 1;
}

.step-content {
    background: var(--gray-50);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    position: relative;
    transition: all var(--transition-base);
}

.step-content:hover {
    background: var(--white);
    box-shadow: var(--shadow-xl);
    transform: translateX(10px);
}

.step-content h3 {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-md);
    color: var(--gray-900);
}

.step-content p {
    color: var(--gray-600);
    line-height: 1.8;
}

.step-content a {
    font-weight: var(--font-weight-semibold);
}

.step-icon {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    font-size: 3rem;
    color: var(--gray-200);
}

.step-connector {
    width: 4px;
    height: 60px;
    background: linear-gradient(180deg, var(--primary-blue) 0%, var(--accent-purple) 100%);
    margin: -40px auto;
    border-radius: var(--radius-sm);
}

.how-to-note {
    max-width: 900px;
    margin: var(--spacing-2xl) auto;
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, #E3F2FD 0%, #F3E5F5 100%);
    border-left: 4px solid var(--primary-blue);
    border-radius: var(--radius-md);
    display: flex;
    gap: var(--spacing-md);
}

.how-to-note i {
    font-size: 1.5rem;
    color: var(--primary-blue);
    flex-shrink: 0;
}

.how-to-note p {
    color: var(--gray-700);
    margin: 0;
}

.video-section {
    max-width: 900px;
    margin: var(--spacing-3xl) auto 0;
    text-align: center;
}

.video-section h3 {
    font-size: 2rem;
    margin-bottom: var(--spacing-xl);
}

.video-wrapper {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-2xl);
    margin-bottom: var(--spacing-md);
}

.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: var(--radius-xl);
}

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

/* ========================================
   FAQ Section
   ======================================== */
.section-faq {
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--gray-100) 100%);
}

.faq-container {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: var(--white);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: all var(--transition-base);
}

.faq-item:hover {
    box-shadow: var(--shadow-md);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    cursor: pointer;
    user-select: none;
    background: var(--white);
    transition: background var(--transition-fast);
}

.faq-question:hover {
    background: var(--gray-50);
}

.faq-question h3 {
    font-size: 1.25rem;
    margin: 0;
    color: var(--gray-900);
    flex: 1;
}

.faq-question i {
    font-size: 1.25rem;
    color: var(--primary-blue);
    transition: transform var(--transition-base);
    flex-shrink: 0;
    margin-left: var(--spacing-md);
}

.faq-item.active .faq-question i {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow), padding var(--transition-base);
    padding: 0 var(--spacing-lg);
}

.faq-item.active .faq-answer {
    max-height: 2000px;
    padding: 0 var(--spacing-lg) var(--spacing-lg);
}

.faq-answer p {
    color: var(--gray-600);
    line-height: 1.8;
}

.faq-answer ul, .faq-answer ol {
    margin: var(--spacing-md) 0;
    padding-left: var(--spacing-xl);
    color: var(--gray-600);
}

.faq-answer li {
    margin-bottom: var(--spacing-sm);
    line-height: 1.8;
}

.faq-answer strong {
    color: var(--gray-900);
}

.comparison-table {
    width: 100%;
    margin: var(--spacing-md) 0;
    border-collapse: collapse;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.comparison-table thead {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-purple) 100%);
    color: var(--white);
}

.comparison-table th {
    padding: var(--spacing-md);
    text-align: left;
    font-weight: var(--font-weight-semibold);
}

.comparison-table td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--gray-200);
}

.comparison-table tbody tr:last-child td {
    border-bottom: none;
}

.comparison-table tbody tr:nth-child(even) {
    background: var(--gray-50);
}

/* ========================================
   CTA Section
   ======================================== */
.section-cta {
    position: relative;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-purple) 100%);
    color: var(--white);
    text-align: center;
    overflow: hidden;
}

.cta-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    z-index: 0;
}

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

.cta-title {
    font-size: clamp(2rem, 4vw, 3rem);
    color: var(--white);
    margin-bottom: var(--spacing-md);
}

.cta-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

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

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

.cta-feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--white);
}

.cta-feature i {
    font-size: 1.25rem;
    color: var(--accent-orange);
}

.newsletter-section {
    margin-top: var(--spacing-3xl);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    position: relative;
    z-index: 1;
}

.newsletter-content h3 {
    font-size: 1.75rem;
    color: var(--white);
    margin-bottom: var(--spacing-sm);
}

.newsletter-content p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-lg);
}

.newsletter-form {
    display: flex;
    gap: var(--spacing-md);
    max-width: 600px;
    margin: 0 auto var(--spacing-md);
    flex-wrap: wrap;
}

.newsletter-form input {
    flex: 1;
    min-width: 250px;
    padding: 0.875rem 1.5rem;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-md);
    font-size: 1rem;
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    transition: all var(--transition-base);
}

.newsletter-form input::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

.newsletter-form input:focus {
    outline: none;
    border-color: var(--white);
    background: rgba(255, 255, 255, 0.2);
}

.newsletter-note {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
    font-style: italic;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--gray-900);
    color: var(--gray-300);
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-column h4 {
    color: var(--white);
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
}

.footer-column p {
    line-height: 1.8;
    color: var(--gray-400);
}

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

.social-links a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-800);
    border-radius: var(--radius-md);
    color: var(--gray-300);
    font-size: 1.25rem;
    transition: all var(--transition-base);
}

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

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    color: var(--gray-400);
    transition: color var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

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

.footer-links i {
    color: var(--primary-blue);
}

.footer-bottom {
    border-top: 1px solid var(--gray-800);
    padding-top: var(--spacing-lg);
    text-align: center;
}

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

.footer-bottom a {
    color: var(--gray-400);
}

.footer-bottom a:hover {
    color: var(--primary-blue);
}

.divider {
    margin: 0 var(--spacing-sm);
    color: var(--gray-700);
}

.disclaimer {
    font-size: 0.75rem;
    color: var(--gray-600);
    max-width: 800px;
    margin: var(--spacing-md) auto 0;
}

/* ========================================
   Scroll to Top Button
   ======================================== */
.scroll-top {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-purple) 100%);
    color: var(--white);
    border: none;
    border-radius: var(--radius-full);
    font-size: 1.25rem;
    cursor: pointer;
    box-shadow: var(--shadow-xl);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-base);
    z-index: 999;
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.scroll-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-2xl);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .hero-image {
        order: -1;
    }
    
    .device-mockup i {
        font-size: 8rem;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        flex-direction: column;
        background: var(--white);
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-lg);
        transform: translateX(-100%);
        transition: transform var(--transition-base);
    }
    
    .nav-menu.active {
        transform: translateX(0);
    }
    
    .hamburger {
        display: flex;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .section {
        padding: var(--spacing-2xl) 0;
    }
    
    .benefits-grid, .about-grid {
        grid-template-columns: 1fr;
    }
    
    .step {
        grid-template-columns: 60px 1fr;
        gap: var(--spacing-md);
    }
    
    .step-number {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .newsletter-form {
        flex-direction: column;
    }
    
    .newsletter-form input {
        min-width: 100%;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .btn-large {
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }
    
    .device-mockup i {
        font-size: 5rem;
    }
    
    .about-card, .benefit-item {
        padding: var(--spacing-md);
    }
    
    .card-icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
    
    .step-content {
        padding: var(--spacing-md);
    }
    
    .scroll-top {
        width: 45px;
        height: 45px;
        bottom: var(--spacing-md);
        right: var(--spacing-md);
    }
}

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

/* Focus Styles */
a:focus, button:focus, input:focus {
    outline: 3px solid var(--primary-blue);
    outline-offset: 2px;
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    .btn {
        border: 2px solid currentColor;
    }
}

/* Print Styles */
@media print {
    .navbar, .scroll-top, .hero-buttons, .cta-buttons, .newsletter-section {
        display: none;
    }
    
    .section {
        page-break-inside: avoid;
    }
}