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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    font-size: 24px;
    font-weight: 700;
    color: #0088cc;
}

.nav-logo i {
    margin-right: 10px;
    font-size: 28px;
}

.nav-menu {
    display: flex;
    list-style: none;
    align-items: center;
    gap: 30px;
}

.nav-menu a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-menu a:hover {
    color: #0088cc;
}

.nav-cta {
    background: linear-gradient(135deg, #0088cc, #00a8ff);
    color: white !important;
    padding: 10px 20px;
    border-radius: 25px;
    transition: all 0.3s ease;
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 136, 204, 0.3);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

/* Language Switcher */
.language-switcher {
    display: flex;
    background: rgba(0, 0, 0, 0.05);
    border-radius: 20px;
    padding: 4px;
}

.lang-btn {
    background: none;
    border: none;
    padding: 6px 12px;
    border-radius: 16px;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    color: #666;
}

.lang-btn.active {
    background: #0088cc;
    color: white;
    box-shadow: 0 2px 8px rgba(0, 136, 204, 0.3);
}

.lang-btn:hover:not(.active) {
    background: rgba(0, 136, 204, 0.1);
    color: #0088cc;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="1" fill="white" opacity="0.1"/><circle cx="30" cy="30" r="1" fill="white" opacity="0.1"/><circle cx="70" cy="20" r="1" fill="white" opacity="0.1"/><circle cx="90" cy="80" r="1" fill="white" opacity="0.1"/><circle cx="50" cy="60" r="1" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    color: white;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
}

.gradient-text {
    background: linear-gradient(45deg, #00d4aa, #00a8ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 40px;
    opacity: 0.9;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    margin-bottom: 60px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 15px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.btn-primary {
    background: linear-gradient(135deg, #00d4aa, #00a8ff);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px rgba(0, 212, 170, 0.4);
}

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

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

.btn-outline-plan {
    background: transparent;
    color: #0088cc;
    border: 2px solid #0088cc;
}

.btn-outline-plan:hover {
    background: #0088cc;
    color: white;
    border-color: #0088cc;
}

.btn-large {
    padding: 18px 35px;
    font-size: 1.1rem;
}

.hero-stats {
    display: flex;
    gap: 40px;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: #00d4aa;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* App Preview */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.app-preview {
    position: relative;
    transform: perspective(1000px) rotateY(-15deg) rotateX(10deg);
    transition: transform 0.3s ease;
}

.app-preview:hover {
    transform: perspective(1000px) rotateY(-10deg) rotateX(5deg);
}

/* Account Avatars Rows */
.account-avatars {
    padding: 8px 10px;
    background: #f8f9fa;
    border-bottom: 1px solid #e9ecef;
}

.avatar-row {
    display: flex;
    justify-content: flex-start;
    gap: 3px;
    margin-bottom: 3px;
}

.avatar-row:last-child {
    margin-bottom: 0;
}

.account-avatar {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.5);
    flex-shrink: 0;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
    cursor: pointer;
}

.account-avatar:hover {
    transform: scale(1.15);
    border-color: rgba(255, 255, 255, 0.8);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.account-avatar:nth-child(1) { background: linear-gradient(135deg, #667eea, #764ba2); }
.account-avatar:nth-child(2) { background: linear-gradient(135deg, #f093fb, #f5576c); }
.account-avatar:nth-child(3) { background: linear-gradient(135deg, #4facfe, #00f2fe); }
.account-avatar:nth-child(4) { background: linear-gradient(135deg, #43e97b, #38f9d7); }
.account-avatar:nth-child(5) { background: linear-gradient(135deg, #fa709a, #fee140); }
.account-avatar:nth-child(6) { background: linear-gradient(135deg, #a8edea, #fed6e3); }
.account-avatar:nth-child(7) { background: linear-gradient(135deg, #ffecd2, #fcb69f); }
.account-avatar:nth-child(8) { background: linear-gradient(135deg, #ff8a80, #ea6100); }
.account-avatar:nth-child(9) { background: linear-gradient(135deg, #8fd3f4, #84fab0); }
.account-avatar:nth-child(10) { background: linear-gradient(135deg, #cdb4db, #ffc8dd); }
.account-avatar:nth-child(11) { background: linear-gradient(135deg, #ffd0a5, #fd9853); }
.account-avatar:nth-child(12) { background: linear-gradient(135deg, #a1c4fd, #c2e9fb); }
.account-avatar:nth-child(13) { background: linear-gradient(135deg, #d299c2, #fef9d7); }
.account-avatar:nth-child(14) { background: linear-gradient(135deg, #89f7fe, #66a6ff); }
.account-avatar:nth-child(15) { background: linear-gradient(135deg, #fdbb2d, #22c1c3); }

/* First Row Additional Gradients K-O */
.avatar-row:first-child .account-avatar:nth-child(11) { background: linear-gradient(135deg, #ff6b6b, #feca57); }
.avatar-row:first-child .account-avatar:nth-child(12) { background: linear-gradient(135deg, #48dbfb, #0abde3); }
.avatar-row:first-child .account-avatar:nth-child(13) { background: linear-gradient(135deg, #ff9ff3, #f368e0); }
.avatar-row:first-child .account-avatar:nth-child(14) { background: linear-gradient(135deg, #54a0ff, #2e86de); }
.avatar-row:first-child .account-avatar:nth-child(15) { background: linear-gradient(135deg, #5f27cd, #00d2d3); }

/* Second Row Updated Gradients P-Z and Cartoon */
.avatar-row:last-child .account-avatar:nth-child(1) { background: linear-gradient(135deg, #ff9a9e, #fecfef); }
.avatar-row:last-child .account-avatar:nth-child(2) { background: linear-gradient(135deg, #96deda, #50c9c3); }
.avatar-row:last-child .account-avatar:nth-child(3) { background: linear-gradient(135deg, #fbc2eb, #a6c1ee); }
.avatar-row:last-child .account-avatar:nth-child(4) { background: linear-gradient(135deg, #fdcbf1, #e6dee9); }
.avatar-row:last-child .account-avatar:nth-child(5) { background: linear-gradient(135deg, #a8caba, #5d4e75); }
.avatar-row:last-child .account-avatar:nth-child(6) { background: linear-gradient(135deg, #ffb347, #ffcc02); }
.avatar-row:last-child .account-avatar:nth-child(7) { background: linear-gradient(135deg, #ff7675, #74b9ff); }
.avatar-row:last-child .account-avatar:nth-child(8) { background: linear-gradient(135deg, #fd79a8, #fdcb6e); }
.avatar-row:last-child .account-avatar:nth-child(9) { background: linear-gradient(135deg, #6c5ce7, #a29bfe); }
.avatar-row:last-child .account-avatar:nth-child(10) { background: linear-gradient(135deg, #00b894, #00cec9); }
.avatar-row:last-child .account-avatar:nth-child(11) { background: linear-gradient(135deg, #e17055, #81ecec); }
.avatar-row:last-child .account-avatar:nth-child(12) { background: linear-gradient(135deg, #ff7675, #fd79a8); }
.avatar-row:last-child .account-avatar:nth-child(13) { background: linear-gradient(135deg, #74b9ff, #0984e3); }
.avatar-row:last-child .account-avatar:nth-child(14) { background: linear-gradient(135deg, #00b894, #55a3ff); }
.avatar-row:last-child .account-avatar:nth-child(15) { background: linear-gradient(135deg, #fd79a8, #fdcb6e); }

.account-avatar::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    background: transparent;
    border-radius: 50%;
    font-size: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

/* First Row Letters A-O 🐹 🐰 🦁 🐯 */
.avatar-row:first-child .account-avatar:nth-child(1)::before { content: '🐹'; }
.avatar-row:first-child .account-avatar:nth-child(2)::before { content: '🐰'; }
.avatar-row:first-child .account-avatar:nth-child(3)::before { content: '🦁'; }
.avatar-row:first-child .account-avatar:nth-child(4)::before { content: '🐯'; }
.avatar-row:first-child .account-avatar:nth-child(5)::before { content: 'E'; }
.avatar-row:first-child .account-avatar:nth-child(6)::before { content: 'F'; }
.avatar-row:first-child .account-avatar:nth-child(7)::before { content: 'G'; }
.avatar-row:first-child .account-avatar:nth-child(8)::before { content: 'H'; }
.avatar-row:first-child .account-avatar:nth-child(9)::before { content: 'I'; }
.avatar-row:first-child .account-avatar:nth-child(10)::before { content: 'J'; }
.avatar-row:first-child .account-avatar:nth-child(11)::before { content: 'K'; }
.avatar-row:first-child .account-avatar:nth-child(12)::before { content: 'L'; }
.avatar-row:first-child .account-avatar:nth-child(13)::before { content: 'M'; }
.avatar-row:first-child .account-avatar:nth-child(14)::before { content: 'N'; }
.avatar-row:first-child .account-avatar:nth-child(15)::before { content: 'O'; }

/* Second Row Letters P-Z and Cartoon */
.avatar-row:last-child .account-avatar:nth-child(1)::before { content: 'P'; }
.avatar-row:last-child .account-avatar:nth-child(2)::before { content: 'Q'; }
.avatar-row:last-child .account-avatar:nth-child(3)::before { content: 'R'; }
.avatar-row:last-child .account-avatar:nth-child(4)::before { content: 'S'; }
.avatar-row:last-child .account-avatar:nth-child(5)::before { content: 'T'; }
.avatar-row:last-child .account-avatar:nth-child(6)::before { content: 'U'; }
.avatar-row:last-child .account-avatar:nth-child(7)::before { content: 'V'; }
.avatar-row:last-child .account-avatar:nth-child(8)::before { content: 'W'; }
.avatar-row:last-child .account-avatar:nth-child(9)::before { content: 'X'; }
.avatar-row:last-child .account-avatar:nth-child(10)::before { content: 'Y'; }
.avatar-row:last-child .account-avatar:nth-child(11)::before { content: 'Z'; }
.avatar-row:last-child .account-avatar:nth-child(12)::before { content: '🐱'; }
.avatar-row:last-child .account-avatar:nth-child(13)::before { content: '🐶'; }
.avatar-row:last-child .account-avatar:nth-child(14)::before { content: '🐸'; }
.avatar-row:last-child .account-avatar:nth-child(15)::before { content: '🦊'; }

/* Cartoon avatars special styles */
.account-avatar.cartoon::before {
    font-size: 8px;
    text-shadow: none;
}

.app-window {
    width: 300px;
    height: 400px;
    background: white;
    border-radius: 15px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    overflow: hidden;
}

.window-header {
    height: 25px;
    background: #f5f5f5;
    display: flex;
    align-items: center;
    padding: 0 15px;
    justify-content: space-between;
}

.window-controls {
    display: flex;
    gap: 8px;
}

.control {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.control.red { background: #ff5f56; }
.control.yellow { background: #ffbd2e; }
.control.green { background: #27ca3f; }

.window-title {
    font-size: 12px;
    color: #666;
    font-weight: 500;
}

.chat-interface {
    height: 460px;
    display: flex;
}

.chat-sidebar {
    width: 100px;
    background: #f8f9fa;
    padding: 10px;
}

.chat-item {
    display: flex;
    padding: 8px;
    border-radius: 8px;
    margin-bottom: 8px;
    cursor: pointer;
    transition: background 0.2s;
}

.chat-item.active {
    background: #e3f2fd;
}

.chat-avatar {
    min-width: 20px;
    height: 20px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea, #764ba2);
    margin-right: 8px;
}

.chat-info {
    flex: 1;
}

.chat-name {
    font-size: 11px;
    font-weight: 600;
    color: #333;
    margin-bottom: 2px;
}

.chat-message {
    font-size: 9px;
    color: #666;
    line-height: 1.2;
}

.chat-main {
    flex: 1;
    padding: 20px;
    background: white;
}

.message {
    background: #f0f0f0;
    padding: 12px;
    border-radius: 12px;
    margin-bottom: 10px;
}

.message-text {
    display: block;
    font-size: 12px;
    color: #333;
    margin-bottom: 5px;
}

.translation {
    display: block;
    font-size: 11px;
    color: #0088cc;
    font-style: italic;
}

/* Features Section */
.features {
    padding: 100px 0;
    background: white;
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: #333;
}

.section-header p {
    font-size: 1.2rem;
    color: #666;
    max-width: 600px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.feature-card {
    text-align: center;
    padding: 40px 30px;
    border-radius: 20px;
    background: white;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border: 1px solid #f0f0f0;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    color: white;
    font-size: 32px;
}

.feature-card h3 {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: #333;
}

.feature-card p {
    color: #666;
    line-height: 1.6;
}

/* Performance Section */
.performance {
    padding: 100px 0;
    background: #f8f9fa;
}

.performance-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.performance-text h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: #333;
}

.performance-text p {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 30px;
}

.performance-list {
    list-style: none;
}

.performance-list li {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
    color: #333;
}

.performance-list i {
    color: #00d4aa;
    margin-right: 15px;
    font-size: 18px;
}

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

.performance-chart {
    width: 300px;
    height: 300px;
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Pricing Section */
.pricing {
    padding: 100px 0;
    background: white;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.pricing-card {
    background: white;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    border: 2px solid #f0f0f0;
    position: relative;
    transition: all 0.3s ease;
    cursor: pointer;
}

.pricing-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
}

.pricing-card.selected {
    border-color: #0088cc;
    box-shadow: 0 20px 50px rgba(0, 136, 204, 0.2);
    transform: translateY(-8px);
    background: linear-gradient(135deg, rgba(0, 136, 204, 0.02), rgba(0, 168, 255, 0.02));
}

.pricing-card.selected .pricing-header h3 {
    color: #0088cc;
}

.pricing-card.selected .amount {
    color: #ffffff;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    background: linear-gradient(135deg, #0088cc, #00a8ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 800;
}

.pricing-card.selected .currency,
.pricing-card.selected .period {
    color: #0088cc;
    font-weight: 700;
}

.pricing-header {
    text-align: center;
    margin-bottom: 30px;
}

.pricing-header h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: #333;
    transition: color 0.3s ease;
}

.price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 5px;
}

.currency {
    font-size: 1.2rem;
    color: #0088cc;
    font-weight: 600;
    transition: color 0.3s ease;
}

.amount {
    font-size: 3rem;
    font-weight: 700;
    color: #0088cc;
    transition: all 0.3s ease;
}

.period {
    font-size: 1rem;
    color: #666;
    font-weight: 400;
}

.price-detail {
    text-align: center;
    margin-top: 8px;
    font-size: 0.9rem;
    color: #0088cc;
    font-weight: 500;
    background: rgba(0, 136, 204, 0.1);
    padding: 4px 12px;
    border-radius: 12px;
    display: inline-block;
}

.pricing-features {
    list-style: none;
    margin-bottom: 30px;
}

.pricing-features li {
    display: flex;
    align-items: center;
    margin-bottom: 12px;
    color: #333;
}

.pricing-features i {
    color: #00d4aa;
    margin-right: 12px;
    font-size: 16px;
}

.pricing-card .btn {
    width: 100%;
    justify-content: center;
    opacity: 1;
    visibility: visible;
}

/* CTA Section */
.cta {
    padding: 100px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
}

.cta-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.cta-content p {
    font-size: 1.2rem;
    margin-bottom: 40px;
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
}

/* Demo Page Styles */
.demo-hero {
    min-height: 60vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    color: white;
    text-align: center;
    padding-top: 100px;
}

.demo-hero-content h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.demo-hero-content p {
    font-size: 1.25rem;
    margin-bottom: 40px;
    opacity: 0.9;
}

.video-demo {
    padding: 100px 0;
    background: white;
}

.video-container {
    max-width: 800px;
    margin: 0 auto;
}

.video-placeholder {
    background: #f8f9fa;
    border: 2px dashed #ddd;
    border-radius: 20px;
    padding: 100px 40px;
    text-align: center;
    color: #666;
}

.video-placeholder i {
    font-size: 4rem;
    color: #0088cc;
    margin-bottom: 20px;
}

.video-placeholder p {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.demo-features {
    padding: 100px 0;
    background: #f8f9fa;
}

.demo-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 40px;
    margin-top: 60px;
}

.demo-feature-item {
    display: flex;
    gap: 30px;
    background: white;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.demo-feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 32px;
    flex-shrink: 0;
}

.demo-feature-content h3 {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: #333;
}

.demo-feature-content p {
    color: #666;
    margin-bottom: 20px;
    line-height: 1.6;
}

.demo-feature-content ul {
    list-style: none;
}

.demo-feature-content ul li {
    color: #666;
    margin-bottom: 8px;
    line-height: 1.5;
}

.demo-steps {
    padding: 100px 0;
    background: white;
}

.steps-timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.steps-timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 60px;
    bottom: 60px;
    width: 2px;
    background: linear-gradient(to bottom, #0088cc, #00a8ff);
}

.step-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 60px;
    position: relative;
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #0088cc, #00a8ff);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    font-weight: 700;
    margin-right: 30px;
    flex-shrink: 0;
    z-index: 1;
    position: relative;
}

.step-content {
    flex: 1;
    padding-top: 10px;
}

.step-content h3 {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: #333;
}

.step-content p {
    color: #666;
    line-height: 1.6;
}

.demo-cta {
    padding: 100px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
}

.demo-cta-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.demo-cta-content p {
    font-size: 1.2rem;
    margin-bottom: 40px;
    opacity: 0.9;
}

.demo-cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
}

/* Footer */
.footer {
    background: #1a1a1a;
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    font-size: 24px;
    font-weight: 700;
    color: #0088cc;
    margin-bottom: 20px;
}

.footer-logo i {
    margin-right: 10px;
}

.footer-section p {
    color: #ccc;
    margin-bottom: 20px;
    line-height: 1.6;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: #333;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: #0088cc;
    transform: translateY(-2px);
}

.footer-section h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: white;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section ul li a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #0088cc;
}

.footer-bottom {
    border-top: 1px solid #333;
    padding-top: 20px;
    text-align: center;
    color: #666;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: white;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-menu li {
        margin-bottom: 15px;
    }
    
    .nav-right {
        gap: 10px;
    }
    
    .language-switcher {
        margin-right: 10px;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
        padding-bottom: 8px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-stats {
        justify-content: center;
        gap: 20px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .performance-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-buttons,
    .demo-cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .app-preview {
        transform: none;
    }
    
    .account-avatars {
        padding: 8px 10px;
    }
    
    .avatar-row {
        gap: 4px;
        margin-bottom: 4px;
    }
    
    .account-avatar {
        width: 14px;
        height: 14px;
    }
    
    .account-avatar::before {
        font-size: 5px;
    }
    
    .account-avatar.cartoon::before {
        font-size: 7px;
    }
    
    .chat-sidebar {
        width: 100px;
    }
    
    .chat-name {
        font-size: 10px;
    }
    
    .chat-message {
        font-size: 8px;
    }
    
    .demo-hero-content h1 {
        font-size: 2rem;
    }
    
    .demo-features-grid {
        grid-template-columns: 1fr;
    }
    
    .demo-feature-item {
        flex-direction: column;
        text-align: center;
    }
    
    .steps-timeline::before {
        left: 20px;
    }
    
    .step-number {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
        margin-right: 20px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .performance-text h2 {
        font-size: 2rem;
    }
    
    .cta-content h2,
    .demo-cta-content h2 {
        font-size: 2rem;
    }
    
    .app-window {
        width: 280px;
        height: 350px;
    }
    
    .chat-sidebar {
        width: 100px;
    }
    
    .chat-name {
        font-size: 10px;
    }
    
    .chat-message {
        font-size: 8px;
    }
    
    .language-switcher {
        display: none;
    }
    
    .demo-hero-content h1 {
        font-size: 1.8rem;
    }
    
    .demo-hero-content p {
        font-size: 1rem;
    }
    
    .video-placeholder {
        padding: 60px 20px;
    }
    
    .video-placeholder i {
        font-size: 3rem;
    }
    
    .demo-feature-item {
        padding: 30px 20px;
    }

    .chat-avatar {
        min-width: 16px;
        height: 16px;
    }
}

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

.feature-card {
    animation: fadeInUp 0.6s ease-out;
}

.feature-card:nth-child(2) { animation-delay: 0.1s; }
.feature-card:nth-child(3) { animation-delay: 0.2s; }
.feature-card:nth-child(4) { animation-delay: 0.3s; }
.feature-card:nth-child(5) { animation-delay: 0.4s; }
.feature-card:nth-child(6) { animation-delay: 0.5s; }
.feature-card:nth-child(7) { animation-delay: 0.6s; }
.feature-card:nth-child(8) { animation-delay: 0.7s; }

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}