:root {
    --primary: #4361ee;
    --primary-light: #4895ef;
    --primary-dark: #3a0ca3;
    --secondary: #4cc9f0;
    --accent: #f72585;
    --text-dark: #212338;
    --text-light: #6c757d;
    --bg-light: #f8f9fa;
    --panel-bg: #ffffff;
    --panel-border: #e9ecef;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
}

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

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

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

/* Navigation */
nav {
    display: flex;
    align-items: center;
    gap: 2rem;
    margin-bottom: 3rem;
    padding: 1rem 0;
    border-bottom: 1px solid var(--panel-border);
}

nav .logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
    margin-right: auto;
}

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

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

/* Hero Section */
.hero {
    text-align: center;
    margin-bottom: 4rem;
    padding: 3rem 0;
}

.hero h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1rem;
    background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.lead {
    font-size: 1.25rem;
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto 2rem;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2rem;
    background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 100%);
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: var(--shadow-md);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(67, 97, 238, 0.4);
}

/* Sections */
section {
    background: var(--panel-bg);
    border-radius: 12px;
    padding: 2.5rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--panel-border);
}

section h2 {
    color: var(--text-dark);
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

section h3 {
    color: var(--text-dark);
    font-size: 1.25rem;
    font-weight: 600;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

/* Problem Items */
.problem-item {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--panel-border);
}

.problem-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
    margin-bottom: 0;
}

.problem-item h3 {
    color: var(--primary-dark);
    margin-top: 0;
}

/* Use Cases */
.use-cases ul {
    list-style: none;
    padding: 0;
}

.use-cases li {
    padding: 0.75rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.use-cases li:before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: bold;
}

/* FAQ */
.faq h3 {
    color: var(--text-dark);
    display: flex;
    align-items: center;
}

.faq h3:before {
    content: "?";
    display: inline-block;
    width: 24px;
    height: 24px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    text-align: center;
    line-height: 24px;
    margin-right: 10px;
    font-weight: bold;
    font-size: 14px;
}

/* Footer */
footer {
    text-align: center;
    padding: 3rem 0 2rem;
    color: var(--text-light);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    nav {
        flex-wrap: wrap;
        gap: 1rem;
    }
    
    section {
        padding: 1.5rem;
    }
}