:root {
    --primary-color: #3b82f6;
    --primary-dark: #2563eb;
    --secondary-color: #10b981;
    --bg-color: #ffffff;
    --bg-secondary: #f9fafb;
    --text-color: #111827;
    --text-secondary: #6b7280;
    --border-color: #e5e7eb;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --positive: #10b981;
    --negative: #ef4444;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--text-color);
    background-color: var(--bg-color);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Language Selector */
.language-selector {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
}

.language-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
}

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

.flag-icon {
    font-size: 18px;
}

.arrow {
    font-size: 10px;
    transition: transform 0.3s ease;
}

.language-btn.active .arrow {
    transform: rotate(180deg);
}

.language-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    min-width: 200px;
    max-height: 400px;
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
}

.language-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    width: 100%;
    padding: 12px 16px;
    border: none;
    background: transparent;
    text-align: left;
    cursor: pointer;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: background 0.2s ease;
}

.lang-option:hover {
    background: var(--bg-secondary);
}

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

/* Hero Section */
.hero {
    padding: 100px 0 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="40" height="40" patternUnits="userSpaceOnUse"><path d="M 40 0 L 0 0 0 40" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
}

.highlight {
    background: linear-gradient(90deg, #fbbf24, #f59e0b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 18px;
    line-height: 1.8;
    margin-bottom: 30px;
    opacity: 0.95;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: 2px solid transparent;
}

.btn-icon {
    width: 20px;
    height: 20px;
}

.btn-primary {
    background: white;
    color: #667eea;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border-color: white;
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

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

.btn-large {
    padding: 18px 36px;
    font-size: 18px;
}

.hero-note {
    font-size: 14px;
    opacity: 0.9;
}

/* Mockup Browser */
.mockup-browser {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    transform: perspective(1000px) rotateY(-5deg);
    transition: transform 0.3s ease;
}

.mockup-browser:hover {
    transform: perspective(1000px) rotateY(0deg);
}

.mockup-header {
    background: #f3f4f6;
    padding: 12px 16px;
    display: flex;
    gap: 8px;
}

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

.mockup-dot:nth-child(1) {
    background: #ef4444;
}

.mockup-dot:nth-child(2) {
    background: #fbbf24;
}

.mockup-dot:nth-child(3) {
    background: #10b981;
}

.mockup-content {
    padding: 24px;
    background: #ffffff;
}

.demo-card {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.demo-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    background: #f9fafb;
    border-radius: 8px;
    animation: pulse 2s ease-in-out infinite;
}

.demo-item:nth-child(2) {
    animation-delay: 0.2s;
}

.demo-item:nth-child(3) {
    animation-delay: 0.4s;
}

.demo-item:nth-child(4) {
    animation-delay: 0.6s;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.8;
    }
}

.demo-symbol {
    font-weight: 600;
    color: #111827;
    font-size: 16px;
}

.demo-price {
    font-weight: 600;
    font-size: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.demo-price.positive {
    color: var(--positive);
}

.demo-price.negative {
    color: var(--negative);
}

.demo-price .arrow {
    font-size: 12px;
}

/* Section Styles */
section {
    padding: 80px 0;
}

.section-title {
    font-size: 40px;
    font-weight: 800;
    text-align: center;
    margin-bottom: 16px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 18px;
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 60px;
}

/* Features Section */
.features {
    background: var(--bg-secondary);
}

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

.feature-card {
    background: white;
    padding: 32px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

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

.feature-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.feature-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-color);
}

.feature-description {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Perfect For Section */
.perfect-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 40px;
}

.perfect-card {
    background: white;
    padding: 24px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    text-align: center;
    transition: all 0.3s ease;
}

.perfect-card:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
}

.perfect-emoji {
    font-size: 48px;
}

.perfect-text {
    font-weight: 600;
    color: var(--text-color);
}

/* Why Choose Section */
.why-choose {
    background: var(--bg-secondary);
}

.why-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-top: 40px;
}

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

.why-icon {
    font-size: 64px;
    margin-bottom: 16px;
}

.why-item h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-color);
}

.why-item p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Pricing Section */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-top: 40px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.pricing-card {
    background: white;
    padding: 40px;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    position: relative;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.pricing-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
}

.pricing-card.featured {
    border-color: var(--primary-color);
    box-shadow: 0 20px 25px -5px rgba(59, 130, 246, 0.3);
}

.featured-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 6px 20px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
}

.pricing-plan {
    font-size: 24px;
    font-weight: 800;
    text-align: center;
    margin-bottom: 20px;
    color: var(--text-color);
}

.pricing-price {
    text-align: center;
    margin-bottom: 30px;
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 4px;
}

.price-currency {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-secondary);
}

.price-amount {
    font-size: 56px;
    font-weight: 800;
    color: var(--text-color);
}

.price-period {
    font-size: 16px;
    color: var(--text-secondary);
}

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

.pricing-features li {
    padding: 12px 0;
    color: var(--text-color);
    border-bottom: 1px solid var(--border-color);
}

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

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

.cta-title {
    font-size: 40px;
    font-weight: 800;
    margin-bottom: 16px;
}

.cta-subtitle {
    font-size: 20px;
    margin-bottom: 40px;
    opacity: 0.95;
}

.cta-section .cta-buttons {
    justify-content: center;
}

/* Footer */
.footer {
    background: #1f2937;
    color: #d1d5db;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-title {
    font-size: 18px;
    font-weight: 700;
    color: white;
    margin-bottom: 16px;
}

.footer-text {
    line-height: 1.7;
    color: #9ca3af;
}

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

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: #9ca3af;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #374151;
    color: #9ca3af;
}

/* Responsive Design */
@media (max-width: 968px) {
    .hero .container {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero-title {
        font-size: 36px;
    }

    .mockup-browser {
        transform: none;
    }

    .section-title {
        font-size: 32px;
    }

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

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

@media (max-width: 640px) {
    .hero {
        padding: 60px 0 40px;
    }

    .hero-title {
        font-size: 28px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

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

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

    .section-title {
        font-size: 28px;
    }

    .section-subtitle {
        font-size: 16px;
    }

    section {
        padding: 60px 0;
    }

    .language-selector {
        top: 10px;
        right: 10px;
    }
}

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

/* Loading Animation */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.feature-card,
.perfect-card,
.why-item,
.pricing-card {
    animation: fadeIn 0.6s ease-out;
}