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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: #f5f7fa;
    min-height: 100vh;
}

/* Header */
.header {
    background: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    padding: 1rem 0;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
}

.logo-image {
    height: 40px;
    width: auto;
    max-width: 200px;
    object-fit: contain;
}

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

.nav a {
    color: #64748b;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.nav a:hover {
    color: #2563eb;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
    color: white;
    padding: 5rem 2rem;
    text-align: center;
}

.hero-logo {
    height: 120px;
    width: auto;
    margin: 0 auto 2rem;
    filter: brightness(0) invert(1);
    opacity: 0.95;
}

.hero-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    line-height: 1.3;
}

.hero-content p {
    font-size: 1.25rem;
    opacity: 0.9;
}

/* Login Section */
.login-section {
    padding: 4rem 2rem;
    background: white;
}

.login-container {
    max-width: 900px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.login-card {
    background: #f8fafc;
    border: 2px solid #e2e8f0;
    border-radius: 1rem;
    padding: 2.5rem;
    text-align: center;
    transition: all 0.3s ease;
}

.login-card:hover {
    border-color: #2563eb;
    box-shadow: 0 10px 30px rgba(37, 99, 235, 0.1);
    transform: translateY(-5px);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.login-card h3 {
    font-size: 1.5rem;
    color: #1e293b;
    margin-bottom: 0.75rem;
}

.login-card p {
    color: #64748b;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.login-button {
    display: inline-block;
    padding: 0.875rem 2rem;
    border-radius: 0.5rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
}

.login-button.primary {
    background: #2563eb;
    color: white;
}

.login-button.primary:hover {
    background: #1d4ed8;
    box-shadow: 0 5px 15px rgba(37, 99, 235, 0.3);
}

.login-button.secondary {
    background: #7c3aed;
    color: white;
}

.login-button.secondary:hover {
    background: #6d28d9;
    box-shadow: 0 5px 15px rgba(124, 58, 237, 0.3);
}

/* About Section */
.about-section {
    padding: 4rem 2rem;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.about-section h2 {
    font-size: 2rem;
    color: #1e293b;
    margin-bottom: 1.5rem;
}

.about-section p {
    font-size: 1.125rem;
    color: #64748b;
    line-height: 1.8;
}

/* Footer */
.footer {
    background: #1e293b;
    color: #94a3b8;
    text-align: center;
    padding: 2rem;
}

/* Responsive */
@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        gap: 1rem;
    }

    .logo-image {
        height: 32px;
        max-width: 150px;
    }

    .nav {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .hero-logo {
        height: 80px;
    }

    .hero-content h2 {
        font-size: 1.75rem;
    }

    .login-container {
        grid-template-columns: 1fr;
    }
}