/* Landing Page Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #ffffff;
}

/* Header */
.header {
    background: #fff;
    border-bottom: 1px solid #e5e7eb;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1e40af;
    margin: 0;
}

.nav {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    color: #4b5563;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-link:hover {
    color: #1e40af;
}

.auth-buttons {
    display: flex;
    gap: 0.75rem;
}

/* Buttons */
.btn {
    padding: 0.5rem 1.25rem;
    border: none;
    border-radius: 4px;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background: #1e40af;
    color: white;
}

.btn-primary:hover {
    background: #1e3a8a;
}

.btn-secondary {
    background: transparent;
    color: #1e40af;
    border: 1px solid #1e40af;
}

.btn-secondary:hover {
    background: #eff6ff;
}

.btn-large {
    padding: 0.75rem 2rem;
    font-size: 1rem;
}

.btn-block {
    width: 100%;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
    color: white;
    padding: 6rem 2rem;
    text-align: center;
}

.hero-container {
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    opacity: 0.95;
    line-height: 1.6;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-cta .btn-secondary {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border-color: white;
}

.hero-cta .btn-secondary:hover {
    background: rgba(255, 255, 255, 0.3);
}

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

/* Features Section */
.features {
    padding: 5rem 0;
    background: #f9fafb;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    color: #1f2937;
}

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

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 4px;
    border: 1px solid #e5e7eb;
    text-align: center;
    transition: transform 0.2s, box-shadow 0.2s;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

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

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: #1f2937;
}

.feature-card p {
    color: #6b7280;
    line-height: 1.6;
}

/* Pricing Section */
.pricing {
    padding: 5rem 0;
    background: white;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.pricing-card {
    background: white;
    border: 2px solid #e5e7eb;
    border-radius: 4px;
    padding: 2.5rem;
    text-align: center;
    position: relative;
}

.pricing-card.featured {
    border-color: #1e40af;
    box-shadow: 0 10px 25px rgba(30, 64, 175, 0.1);
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: #1e40af;
    color: white;
    padding: 0.25rem 1rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

.pricing-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #1f2937;
}

.price {
    font-size: 3rem;
    font-weight: 700;
    color: #1e40af;
    margin-bottom: 1.5rem;
}

.price-period {
    font-size: 1rem;
    color: #6b7280;
    font-weight: 400;
}

.pricing-features {
    list-style: none;
    margin-bottom: 2rem;
    text-align: left;
}

.pricing-features li {
    padding: 0.75rem 0;
    color: #4b5563;
    border-bottom: 1px solid #f3f4f6;
}

.pricing-features li:last-child {
    border-bottom: none;
}

.pricing-features li:before {
    content: "✓ ";
    color: #10b981;
    font-weight: 700;
    margin-right: 0.5rem;
}

/* CTA Section */
.cta {
    padding: 5rem 0;
    background: #1e40af;
    color: white;
    text-align: center;
}

.cta h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.cta p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

/* Footer */
.footer {
    background: #1f2937;
    color: #9ca3af;
    padding: 2rem 0;
    text-align: center;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
}

.modal-content {
    background-color: white;
    margin: 10% auto;
    padding: 2rem;
    border-radius: 4px;
    width: 90%;
    max-width: 400px;
    position: relative;
}

.close {
    position: absolute;
    right: 1rem;
    top: 1rem;
    font-size: 2rem;
    font-weight: 300;
    color: #9ca3af;
    cursor: pointer;
}

.close:hover {
    color: #1f2937;
}

.auth-tabs {
    display: flex;
    border-bottom: 1px solid #e5e7eb;
    margin-bottom: 1.5rem;
}

.auth-tab {
    flex: 1;
    padding: 0.75rem;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    font-weight: 500;
    color: #6b7280;
}

.auth-tab.active {
    color: #1e40af;
    border-bottom-color: #1e40af;
}

.auth-form {
    display: none;
}

.auth-form.active {
    display: block;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #374151;
}

.form-group input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #d1d5db;
    border-radius: 4px;
    font-size: 1rem;
}

.form-group input:focus {
    outline: none;
    border-color: #1e40af;
    box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

.form-group small {
    display: block;
    margin-top: 0.25rem;
    color: #6b7280;
    font-size: 0.875rem;
}

.error-message {
    color: #dc2626;
    margin-top: 1rem;
    font-size: 0.875rem;
    text-align: center;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    .header-container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav {
        flex-direction: column;
        gap: 1rem;
    }
    
    .features-grid,
    .pricing-grid {
        grid-template-columns: 1fr;
    }
}