/* Reset and Base */
* {
    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: #f5f5f5;
}

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

/* Header */
.header {
    background: #fff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav {
    padding: 1rem 0;
}

.nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: #2563eb;
    text-decoration: none;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    color: #333;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

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

.nav-auth {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.nav-auth a {
    color: #333;
    text-decoration: none;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background: #1d4ed8;
}

.btn-secondary {
    background: #e5e7eb;
    color: #333;
}

.btn-secondary:hover {
    background: #d1d5db;
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn-block {
    display: block;
    width: 100%;
    text-align: center;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 6rem 0;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

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

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

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

/* Features Section */
.features {
    padding: 4rem 0;
    background: white;
}

.features h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-card {
    padding: 2rem;
    border-radius: 8px;
    background: #f9fafb;
    text-align: center;
}

.feature-card h3 {
    margin-bottom: 1rem;
    color: #2563eb;
}

/* Pricing Section */
.pricing-preview {
    padding: 4rem 0;
}

.pricing-preview h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2rem;
}

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

.plan-card {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    text-align: center;
    position: relative;
}

.plan-popular {
    border: 2px solid #2563eb;
    transform: scale(1.05);
}

.plan-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: #2563eb;
    color: white;
    padding: 0.25rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
}

.plan-card h3 {
    margin-bottom: 0.5rem;
}

.plan-description {
    color: #6b7280;
    margin-bottom: 1rem;
}

.plan-price {
    margin: 1.5rem 0;
}

.plan-price .currency {
    font-size: 1.5rem;
    vertical-align: top;
}

.plan-price .amount {
    font-size: 3rem;
    font-weight: bold;
}

.plan-price .period {
    color: #6b7280;
}

.plan-features {
    list-style: none;
    margin: 1.5rem 0;
}

.plan-features li {
    padding: 0.5rem 0;
    border-bottom: 1px solid #e5e7eb;
}

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

/* Page Header */
.page-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

/* Features Detail Page */
.features-detail {
    padding: 4rem 0;
}

.feature-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    margin-bottom: 4rem;
}

.feature-row-reverse {
    direction: rtl;
}

.feature-row-reverse > * {
    direction: ltr;
}

.feature-content h2 {
    margin-bottom: 1rem;
    color: #1f2937;
}

.feature-content p {
    margin-bottom: 1rem;
    color: #4b5563;
}

.feature-content ul {
    list-style: none;
}

.feature-content li {
    padding: 0.25rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.feature-content li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #2563eb;
    font-weight: bold;
}

.feature-image {
    background: #f3f4f6;
    border-radius: 8px;
    height: 250px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #9ca3af;
}

/* Pricing Page */
.pricing-page {
    padding: 4rem 0;
}

.pricing-faq {
    margin-top: 4rem;
}

.pricing-faq h2 {
    text-align: center;
    margin-bottom: 2rem;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.faq-item h4 {
    margin-bottom: 0.5rem;
    color: #1f2937;
}

.faq-item p {
    color: #4b5563;
}

/* Docs Page */
.docs-section {
    padding: 2rem 0;
}

.docs-layout {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 3rem;
}

.docs-sidebar {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    height: fit-content;
    position: sticky;
    top: 100px;
}

.docs-sidebar h3 {
    margin-bottom: 0.75rem;
    font-size: 1rem;
    color: #6b7280;
}

.docs-sidebar ul {
    list-style: none;
    margin-bottom: 1.5rem;
}

.docs-sidebar li {
    margin-bottom: 0.5rem;
}

.docs-sidebar a {
    color: #374151;
    text-decoration: none;
}

.docs-sidebar a:hover {
    color: #2563eb;
}

.docs-content {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.docs-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
}

.doc-card {
    background: #f9fafb;
    padding: 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    color: inherit;
    transition: background 0.3s;
}

.doc-card:hover {
    background: #f3f4f6;
}

.doc-card h4 {
    color: #2563eb;
    margin-bottom: 0.5rem;
}

.doc-card p {
    color: #6b7280;
    font-size: 0.9rem;
}

/* About Page */
.about-section {
    padding: 4rem 0;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    padding: 3rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.about-content h2 {
    margin: 2rem 0 1rem;
    color: #1f2937;
}

.about-content h2:first-child {
    margin-top: 0;
}

.about-content p {
    margin-bottom: 1rem;
    color: #4b5563;
}

.about-content ul {
    list-style: none;
}

.about-content li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.about-content li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #2563eb;
    font-weight: bold;
}

/* Contact Page */
.contact-section {
    padding: 4rem 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info h2,
.contact-form-wrapper h2 {
    margin-bottom: 1.5rem;
}

.contact-item {
    margin-bottom: 2rem;
}

.contact-item h4 {
    color: #2563eb;
    margin-bottom: 0.5rem;
}

.contact-item p {
    color: #4b5563;
}

.contact-form {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

/* Auth Pages */
.auth-section {
    padding: 4rem 0;
    min-height: calc(100vh - 200px);
    display: flex;
    align-items: center;
}

.auth-box {
    max-width: 400px;
    margin: 0 auto;
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.auth-box h1 {
    text-align: center;
    margin-bottom: 1.5rem;
}

.auth-links {
    text-align: center;
    margin-top: 1.5rem;
    color: #6b7280;
}

.auth-links a {
    color: #2563eb;
    text-decoration: none;
}

/* Forms */
.form-group {
    margin-bottom: 1rem;
}

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

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: #2563eb;
}

.form-checkbox {
    display: flex;
    align-items: center;
}

.form-checkbox input {
    width: auto;
    margin-right: 0.5rem;
}

/* Flash Messages */
.flash-messages {
    max-width: 1200px;
    margin: 1rem auto;
    padding: 0 20px;
}

.alert {
    padding: 1rem;
    border-radius: 6px;
    margin-bottom: 1rem;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.alert-info {
    background: #dbeafe;
    color: #1e40af;
    border: 1px solid #bfdbfe;
}

/* CTA Section */
.cta-section {
    background: #1f2937;
    color: white;
    padding: 4rem 0;
}

.cta-section h2 {
    margin-bottom: 1rem;
}

.cta-section p {
    margin-bottom: 2rem;
    opacity: 0.9;
}

/* Footer */
.footer {
    background: #1f2937;
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    margin-bottom: 1rem;
}

.footer-section p {
    opacity: 0.8;
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: white;
    opacity: 0.8;
    text-decoration: none;
}

.footer-section a:hover {
    opacity: 1;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #374151;
    opacity: 0.8;
}

/* Utilities */
.text-center {
    text-align: center;
}

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

    .nav-menu {
        gap: 1rem;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero-cta {
        flex-direction: column;
    }

    .feature-row {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .feature-row-reverse {
        direction: ltr;
    }

    .plans-grid {
        grid-template-columns: 1fr;
    }

    .plan-popular {
        transform: none;
    }

    .docs-layout {
        grid-template-columns: 1fr;
    }

    .docs-sidebar {
        position: static;
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}