:root {
    --primary: #1e40af;
    --primary-light: #eff6ff;
    --secondary: #0369a1;
    --accent: #10b981;
    --bg-main: #ffffff;
    --bg-subtle: #f8fafc;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --radius: 12px;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

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

body {
    font-family: var(--font-sans);
    color: var(--text-main);
    background: var(--bg-main);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* Header */
.top-nav {
    background: #0f172a;
    color: #cbd5e1;
    padding: 8px 0;
    font-size: 12px;
    font-weight: 500;
}

.main-nav {
    border-bottom: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    text-decoration: none;
    font-size: 22px;
    font-weight: 800;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

@media (max-width: 640px) {
    .logo {
        font-size: 18px;
    }
}

.logo span {
    color: var(--text-main);
}

.nav-menu {
    display: flex;
    gap: 32px;
    list-style: none;
}

@media (max-width: 992px) {
    .nav-menu {
        display: none; /* Hide for mobile by default */
    }
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-main);
    font-weight: 600;
    font-size: 15px;
    transition: color 0.2s;
}

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

.nav-actions {
    display: flex;
    gap: 12px;
    align-items: center;
}

/* Buttons */
.btn {
    height: 44px;
    padding: 0 24px;
    border-radius: var(--radius);
    font-weight: 700;
    font-size: 14px;
    cursor: pointer;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.2s;
}

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

.btn-primary:hover {
    background: #1e3a8a;
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(30, 64, 175, 0.2);
}

.btn-outline {
    border: 2px solid var(--border);
    color: var(--text-main);
}

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

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

/* Hero Section */
.hero {
    padding: 100px 0;
    background: linear-gradient(135deg, #f8fafc 0%, #ffffff 100%);
}

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

.hero-content h1 {
    font-size: 56px;
    line-height: 1.1;
    margin-bottom: 24px;
    color: #0f172a;
}

.hero-content p {
    font-size: 18px;
    color: var(--text-muted);
    margin-bottom: 40px;
    max-width: 500px;
}

.hero-visual img {
    width: 100%;
    border-radius: 20px;
    box-shadow: 0 30px 60px rgba(15, 23, 42, 0.1);
    border: 1px solid var(--border);
}

/* Stats Section */
.stats {
    padding: 40px 0;
    background: #ffffff;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.stats-grid {
    display: flex;
    justify-content: space-between;
    text-align: center;
}

.stat-item h3 {
    font-size: 32px;
    color: var(--primary);
    margin-bottom: 5px;
}

.stat-item p {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-muted);
}

/* Sections General */
.section-padding {
    padding: 120px 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 80px;
}

.section-header h2 {
    font-size: 40px;
    margin-bottom: 20px;
}

.section-header p {
    color: var(--text-muted);
    font-size: 18px;
}

/* Features & Grids */
.feature-grid, .pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    background: white;
    padding: 40px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    transition: all 0.3s;
}

.feature-card:hover {
    border-color: var(--primary);
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.05);
}

.pricing-card.featured {
    border: 2px solid var(--primary);
    transform: scale(1.05);
    box-shadow: 0 25px 50px -12px rgba(30, 64, 175, 0.15);
}

.icon-box {
    width: 60px;
    height: 60px;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.feature-card h3 {
    margin-bottom: 16px;
    font-size: 20px;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 15px;
}

/* Module Rows */
.module-row {
    display: flex;
    align-items: center;
    gap: 80px;
    margin-bottom: 40px;
}

.module-text {
    flex: 1;
}

.module-visual {
    flex: 1.2;
}

.module-visual img {
    width: 100%;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.05);
}

.badge {
    display: inline-block;
    padding: 6px 16px;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: 100px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 20px;
}

.module-text h2 {
    font-size: 36px;
    line-height: 1.2;
    margin-bottom: 24px;
}

.module-text p {
    font-size: 16px;
    color: var(--text-muted);
    margin-bottom: 30px;
}

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

.check-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    font-weight: 600;
    color: #475569;
}

.check-list i {
    color: var(--accent);
    width: 20px;
}

/* Footer */
footer {
    background: #0f172a;
    color: #94a3b8;
    padding: 80px 0 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-logo {
    font-size: 24px;
    font-weight: 800;
    color: white;
    text-decoration: none;
    margin-bottom: 20px;
    display: block;
}

.footer-logo span {
    color: var(--primary);
}

.footer-links h4 {
    color: white;
    margin-bottom: 24px;
    font-size: 16px;
}

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

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

.footer-links a {
    color: inherit;
    text-decoration: none;
    transition: color 0.2s;
}

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

.footer-bottom {
    border-top: 1px solid #1e293b;
    padding-top: 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.social-links {
    display: flex;
    gap: 20px;
}

.social-links a {
    color: #64748b;
    transition: color 0.2s;
}

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

/* WhatsApp Floating */
.whatsapp-float {
    position: fixed;
    bottom: 40px;
    right: 40px;
    width: 60px;
    height: 60px;
    background: #25d366;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 20px rgba(37, 211, 102, 0.3);
    z-index: 1000;
    transition: all 0.3s;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    background: #22c55e;
}

/* Responsive Improvements */
@media (max-width: 1024px) {
    .feature-grid, .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }
    
    .hero-content h1 {
        font-size: 36px;
    }

    .hero-content p {
        margin: 0 auto 30px;
    }

    .hero-content div {
        justify-content: center;
    }

    .module-row {
        flex-direction: column !important;
        text-align: center;
        gap: 40px;
    }

    .check-list li {
        justify-content: center;
    }

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

@media (max-width: 768px) {
    .feature-grid, .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-card.featured {
        transform: none;
    }
}

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

    .hero-content h1 {
        font-size: 32px;
    }

    .stats-grid {
        flex-direction: column;
        gap: 30px;
    }

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

    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }

    .nav-actions {
        display: none;
    }
    
    .nav-wrapper {
        height: 60px;
    }

    .top-nav .container {
        flex-direction: column;
        align-items: center;
        gap: 5px;
        text-align: center;
    }
    
    .whatsapp-float {
        width: 50px;
        height: 50px;
        bottom: 20px;
        right: 20px;
    }
}