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

:root {
    --primary-blue: #2563eb;
    --dark-blue: #1e40af;
    --light-blue: #dbeafe;
    --text-dark: #1e293b;
    --text-light: #64748b;
    --white: #ffffff;
    --background: #f8fafc;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
}

/* Navbar */
.navbar {
    background: var(--primary-blue);
    color: white;
    padding: 20px 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h1 {
    font-size: 1.5em;
    font-weight: 700;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-links a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.3s;
}

.nav-links a:hover {
    opacity: 0.8;
}

.btn-login {
    background: white;
    color: var(--primary-blue);
    padding: 10px 25px;
    border: none;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 255, 255, 0.3);
}

/* Hero Section */
.hero {
    background: var(--primary-blue);
    color: white;
    padding: 150px 20px 100px;
    text-align: center;
    margin-top: 60px;
}

.hero-content h1 {
    font-size: 3em;
    margin-bottom: 20px;
    font-weight: 700;
}

.hero-subtitle {
    font-size: 1.5em;
    margin-bottom: 40px;
    opacity: 0.95;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-primary,
.btn-secondary {
    padding: 15px 40px;
    font-size: 1.1em;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 255, 255, 0.3);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

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

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

section {
    padding: 80px 20px;
}

section h2 {
    text-align: center;
    font-size: 2.5em;
    margin-bottom: 60px;
    color: var(--primary-blue);
    font-weight: 700;
}

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

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

.feature-card {
    background: white;
    padding: 40px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.15);
}

.feature-icon {
    font-size: 3em;
    margin-bottom: 20px;
}

.feature-card h3 {
    color: var(--primary-blue);
    font-size: 1.4em;
    margin-bottom: 15px;
    font-weight: 600;
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.8;
}

/* Roles Section */
.roles {
    background: white;
}

.roles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.role-card {
    background: var(--light-blue);
    padding: 40px;
    border-radius: 12px;
    border: 2px solid var(--primary-blue);
}

.role-icon {
    font-size: 3em;
    text-align: center;
    margin-bottom: 20px;
}

.role-card h3 {
    color: var(--primary-blue);
    font-size: 1.6em;
    margin-bottom: 20px;
    text-align: center;
    font-weight: 600;
}

.role-card ul {
    list-style: none;
}

.role-card li {
    padding: 10px 0;
    padding-left: 30px;
    position: relative;
    color: var(--text-dark);
}

.role-card li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary-blue);
    font-weight: bold;
}

/* About Section */
.about {
    background: var(--background);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-content p {
    font-size: 1.2em;
    line-height: 1.8;
    color: var(--text-dark);
    margin-bottom: 20px;
}

/* Contact Section */
.contact {
    background: white;
    text-align: center;
}

.contact p {
    font-size: 1.2em;
    color: var(--text-dark);
    margin-bottom: 30px;
}

.contact-info {
    margin-top: 40px;
}

.contact-info p {
    font-size: 1.1em;
    color: var(--primary-blue);
    font-weight: 600;
    margin: 10px 0;
}

/* Footer */
.footer {
    background: var(--primary-blue);
    color: white;
    text-align: center;
    padding: 30px 20px;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        gap: 15px;
    }
    
    .hero-content h1 {
        font-size: 2em;
    }
    
    .hero-subtitle {
        font-size: 1.2em;
    }
    
    section h2 {
        font-size: 2em;
    }
    
    .features-grid,
    .roles-grid {
        grid-template-columns: 1fr;
    }
}