:root {
    --primary: #2563eb;
    --primary-dark: #1e40af;
    --secondary: #64748b;
    --text-main: #1e293b;
    --light-bg: #f8fafc;
    --white: #ffffff;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);
    --radius: 12px;
}

body {
    font-family: 'Inter', system-ui, sans-serif;
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Navbar */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid #e2e8f0;
}

.navbar-brand {
    font-weight: 700;
    color: var(--primary) !important;
    font-size: 1.5rem;
}

/* Hero Section */
.hero-section {
    padding: 120px 0 100px;
    background: linear-gradient(135deg, #eff6ff 0%, #ffffff 100%);
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(37,99,235,0.05) 0%, transparent 70%);
    z-index: 0;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.02em;
    background: linear-gradient(to right, var(--text-main), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--secondary);
    max-width: 600px;
    margin-bottom: 2.5rem;
}

/* Buttons */
.btn-primary-custom {
    background: var(--primary);
    color: white;
    padding: 12px 32px;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.2s;
    border: none;
    box-shadow: 0 4px 6px rgba(37, 99, 235, 0.2);
}

.btn-primary-custom:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 12px rgba(37, 99, 235, 0.3);
    color: white;
}

.btn-outline-custom {
    border: 2px solid #e2e8f0;
    color: var(--text-main);
    padding: 12px 32px;
    border-radius: 50px;
    font-weight: 600;
    margin-left: 10px;
    background: transparent;
    transition: all 0.2s;
}

.btn-outline-custom:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: #eff6ff;
}

/* Features */
.section-title {
    font-weight: 700;
    margin-bottom: 1rem;
    font-size: 2.25rem;
    text-align: center;
}

.feature-card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--radius);
    border: 1px solid #f1f5f9;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    height: 100%;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: #e2e8f0;
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: #eff6ff;
    color: var(--primary);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
}

.feature-title {
    font-weight: 700;
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

/* Tech Highlights */
.tech-item {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
    font-weight: 500;
    color: var(--text-main);
}

.tech-check {
    color: #10b981;
    margin-right: 0.75rem;
    font-size: 1.25rem;
}

/* Footer */
footer {
    background: var(--white);
    padding: 4rem 0;
    border-top: 1px solid #e2e8f0;
}

footer a {
    color: var(--secondary);
    text-decoration: none;
    transition: color 0.2s;
}

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

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    .hero-section {
        padding: 80px 0 60px;
    }
}