/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --secondary-color: #8b5cf6;
    --background: #0f172a;
    --surface: #1e293b;
    --surface-light: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --success: #10b981;
    --error: #ef4444;
    --border: #334155;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
}

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

/* Navbar */
.navbar {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

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

.nav-brand h1 {
    font-size: 1.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--primary-color);
}

/* Hero Section */
.hero {
    padding: 6rem 0;
    text-align: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 2.5rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.hero-note {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Buttons */
.btn {
    padding: 0.875rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    display: inline-block;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(99, 102, 241, 0.3);
}

.btn-secondary {
    background: var(--surface-light);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: var(--surface);
}

.btn-large {
    padding: 1.125rem 2.5rem;
    font-size: 1.125rem;
    width: 100%;
}

/* Features Section */
.features {
    padding: 5rem 0;
    background: var(--surface);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

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

.feature-card {
    background: var(--background);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border);
    transition: transform 0.3s, border-color 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
}

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

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.feature-card p {
    color: var(--text-secondary);
}

/* How It Works */
.how-it-works {
    padding: 5rem 0;
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-top: 3rem;
}

.step {
    text-align: center;
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0 auto 1.5rem;
}

.step h3 {
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.step p {
    color: var(--text-secondary);
}

/* Pricing */
.pricing {
    padding: 5rem 0;
    background: var(--surface);
}

.pricing-card {
    max-width: 500px;
    margin: 0 auto;
    background: var(--background);
    border-radius: 16px;
    padding: 2.5rem;
    border: 2px solid var(--primary-color);
}

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

.pricing-header h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.price {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--primary-color);
}

.price span {
    font-size: 1.25rem;
    color: var(--text-muted);
    font-weight: normal;
}

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

.pricing-features li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border);
    color: var(--text-secondary);
}

.pricing-note {
    text-align: center;
    color: var(--text-muted);
    margin-top: 1rem;
    font-size: 0.9rem;
}

/* FAQ */
.faq {
    padding: 5rem 0;
}

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

.faq-item {
    background: var(--surface);
    padding: 2rem;
    border-radius: 12px;
    margin-bottom: 1.5rem;
    border: 1px solid var(--border);
}

.faq-item h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.faq-item p {
    color: var(--text-secondary);
}

/* Footer */
.footer {
    background: var(--surface);
    border-top: 1px solid var(--border);
    padding: 3rem 0 1.5rem;
    margin-top: 5rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-brand h3 {
    margin-bottom: 0.5rem;
}

.footer-brand p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-links h4 {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

.footer-links a {
    display: block;
    color: var(--text-muted);
    text-decoration: none;
    margin-bottom: 0.5rem;
    transition: color 0.3s;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Purchase Page Styles */
.purchase-section {
    padding: 3rem 0 5rem;
    min-height: calc(100vh - 200px);
}

.purchase-header {
    text-align: center;
    margin-bottom: 3rem;
}

.purchase-header h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.purchase-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.purchase-container {
    max-width: 600px;
    margin: 0 auto;
}

.purchase-form {
    background: var(--surface);
    border-radius: 12px;
    padding: 2rem;
    border: 1px solid var(--border);
}

.checkout-form h3 {
    margin-bottom: 1.5rem;
}

.order-summary {
    background: var(--background);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.order-summary h3 {
    margin-bottom: 1rem;
}

.summary-item {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem 0;
    color: var(--text-secondary);
}

.summary-item .price {
    color: var(--text-primary);
    font-weight: 600;
}

.order-summary hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 1rem 0;
}

.summary-total {
    display: flex;
    justify-content: space-between;
    padding: 1rem 0 0;
    font-size: 1.25rem;
    font-weight: 700;
}

.price-large {
    color: var(--primary-color);
    font-size: 2rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.form-group input[type="email"],
.form-group input[type="text"] {
    width: 100%;
    padding: 0.875rem;
    background: var(--background);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group small {
    display: block;
    margin-top: 0.5rem;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.error-message {
    color: var(--error);
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

.payment-security {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 1.5rem;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.info-box {
    padding: 2rem;
}

.info-box h3 {
    margin-bottom: 1.5rem;
}

.info-box p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.info-box ol {
    margin: 1.5rem 0;
    padding-left: 1.5rem;
}

.info-box ol li {
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}

.highlight {
    background: var(--surface-light);
    padding: 1rem;
    border-radius: 8px;
    border-left: 4px solid var(--primary-color);
}

.small-text {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.hidden {
    display: none !important;
}

.modal.hidden {
    display: none;
}

.modal-content {
    background: var(--surface);
    border-radius: 16px;
    padding: 3rem;
    max-width: 500px;
    text-align: center;
    border: 1px solid var(--border);
}

.modal-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 3rem;
}

.modal-icon.success {
    background: var(--success);
    color: white;
}

.modal-icon.error {
    background: var(--danger, #ef4444);
    color: white;
}

.spinner-large {
    border: 3px solid rgba(255, 255, 255, 0.2);
    border-top: 3px solid var(--primary, #6366f1);
    border-radius: 50%;
    width: 48px;
    height: 48px;
    animation: spin 1s linear infinite;
    margin: 0 auto 1.5rem;
}

.modal-content h2 {
    margin-bottom: 1rem;
}

.activation-code-box {
    background: var(--background);
    border-radius: 12px;
    padding: 1.5rem;
    margin: 2rem 0;
    border: 1px solid var(--border);
}

.activation-code-box label {
    display: block;
    margin-bottom: 0.75rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.code-display {
    font-family: 'Courier New', monospace;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    padding: 1rem;
    background: var(--surface);
    border-radius: 8px;
    margin-bottom: 1rem;
    letter-spacing: 2px;
}

.next-steps {
    text-align: left;
    margin: 2rem 0;
    padding: 1.5rem;
    background: var(--background);
    border-radius: 8px;
}

.next-steps h3 {
    margin-bottom: 1rem;
}

.next-steps ol {
    padding-left: 1.5rem;
}

.next-steps li {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.purchase-features {
    max-width: 800px;
    margin: 4rem auto 0;
    padding: 2rem;
    background: var(--surface);
    border-radius: 12px;
    border: 1px solid var(--border);
}

.purchase-features h3 {
    text-align: center;
    margin-bottom: 2rem;
    font-size: 1.75rem;
}

.feature-list {
    display: grid;
    gap: 1.5rem;
}

.feature-item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.feature-item .feature-icon {
    width: 30px;
    height: 30px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-weight: bold;
}

.feature-item strong {
    display: block;
    margin-bottom: 0.25rem;
}

.feature-item p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.spinner {
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top: 2px solid white;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    animation: spin 1s linear infinite;
    display: inline-block;
}

.spinner.hidden {
    display: none;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Responsive */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }

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

    .nav-links {
        gap: 1rem;
    }

    .modal-content {
        margin: 1rem;
        padding: 2rem;
    }
}