:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary: #64748b;
    --accent: #3b82f6;
    --bg: #ffffff;
    --text: #0f172a;
    --text-muted: #475569;
    --light-gray: #f8fafc;
    --border: #e2e8f0;
    --white: #ffffff;
    --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navbar */
.navbar {
    height: 80px;
    display: flex;
    align-items: center;
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--border);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
}

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

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 500;
    transition: color 0.3s;
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

/* Buttons */
.btn-primary {
    background: var(--primary);
    color: var(--white);
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: background 0.3s;
}

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

.btn-secondary {
    background: var(--light-gray);
    color: var(--text);
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    border: 1px solid var(--border);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn-text {
    text-decoration: none;
    color: var(--text);
    font-weight: 600;
}

/* Hero Section */
.hero {
    padding: 6rem 0;
    background: linear-gradient(180deg, #f0f9ff 0%, #ffffff 100%);
    overflow: hidden;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content h1 {
    font-size: 3.5rem;
    line-height: 1.2;
    font-weight: 800;
    margin-bottom: 1.5rem;
}

.hero-content h1 span {
    color: var(--primary);
}

.hero-content p {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    max-width: 500px;
}

.hero-actions {
    display: flex;
    gap: 1rem;
}

.hero-image {
    position: relative;
}

.dashboard-preview {
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow);
    height: 400px;
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.preview-header {
    height: 40px;
    background: var(--light-gray);
    border-bottom: 1px solid var(--border);
}

.preview-body {
    display: flex;
    flex: 1;
}

.sidebar {
    width: 60px;
    background: #f1f5f9;
    border-right: 1px solid var(--border);
}

.main-content {
    flex: 1;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.card {
    height: 80px;
    background: #f8fafc;
    border-radius: 8px;
    border: 1px solid var(--border);
}

/* Features */
.features {
    padding: 6rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    padding: 2.5rem;
    border-radius: 12px;
    border: 1px solid var(--border);
    transition: transform 0.3s, box-shadow 0.3s;
}

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

.feature-card .icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

/* AI Highlight */
.ai-highlight {
    padding: 6rem 0;
    background: #0f172a;
    color: white;
}

.ai-highlight .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(37, 99, 235, 0.2);
    color: #60a5fa;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.ai-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.ai-features {
    list-style: none;
    margin: 2rem 0;
}

.ai-features li {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.ai-features li::before {
    content: '✓';
    color: #60a5fa;
    font-weight: bold;
}

.ai-visual {
    background: rgba(255, 255, 255, 0.05);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.ai-card {
    background: #1e293b;
    border-radius: 8px;
    overflow: hidden;
}

.ai-card-header {
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.ai-card-body {
    padding: 1.5rem;
}

.skeleton-line {
    height: 10px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 5px;
    margin-bottom: 1rem;
}

.skeleton-line.short { width: 60%; }

.skeleton-bullets div {
    height: 8px;
    background: rgba(96, 165, 250, 0.3);
    border-radius: 4px;
    margin-bottom: 0.5rem;
    width: 80%;
}

/* CTA Banner */
.cta-banner {
    padding: 6rem 0;
    text-align: center;
    background: var(--primary);
    color: white;
}

.cta-banner h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta-banner p {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
}

.btn-white {
    background: white;
    color: var(--primary);
    padding: 1rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 700;
    transition: opacity 0.3s;
}

/* Footer */
.footer {
    padding: 4rem 0 2rem;
    background: var(--light-gray);
    border-top: 1px solid var(--border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

.footer-brand p {
    margin-top: 1rem;
    color: var(--text-muted);
}

.footer-links h4 {
    margin-bottom: 1.5rem;
}

.footer-links a {
    display: block;
    text-decoration: none;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
    transition: color 0.3s;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Mobile Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 2px;
    background: var(--text);
}

@media (max-width: 768px) {
    .nav-links, .nav-actions {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }

    .hero .container, .ai-highlight .container {
        grid-template-columns: 1fr;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

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