/* CSS Variables */
:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary-color: #10b981;
    --secondary-dark: #059669;
    --accent-color: #f59e0b;
    --text-dark: #1f2937;
    --text-medium: #4b5563;
    --text-light: #6b7280;
    --bg-light: #f9fafb;
    --bg-white: #ffffff;
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--primary-dark);
}

img {
    max-width: 100%;
    height: auto;
}

h1, h2, h3, h4, h5, h6 {
    line-height: 1.3;
    color: var(--text-dark);
}

h1 {
    font-size: 2.5rem;
    font-weight: 800;
}

h2 {
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 1rem;
}

h3 {
    font-size: 1.25rem;
    font-weight: 600;
}

.highlight {
    color: var(--primary-color);
}

.section-subtitle {
    text-align: center;
    color: var(--text-medium);
    max-width: 600px;
    margin: 0 auto 3rem;
    font-size: 1.125rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-lg);
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    box-shadow: var(--shadow-md), 0 0 0 0 rgba(99, 102, 241, 0.5);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), 0 0 20px rgba(99, 102, 241, 0.4);
    color: white;
}

.btn-secondary {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--secondary-dark) 100%);
    color: white;
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: white;
}

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

.btn-white:hover {
    background: var(--bg-light);
    transform: translateY(-2px);
    color: var(--primary-dark);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn-full {
    width: 100%;
}

.btn-icon {
    font-size: 1.25rem;
}

/* Header */
.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    gap: 2rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 1.125rem;
    color: var(--text-dark);
}

.logo:hover {
    color: var(--text-dark);
}

.logo-icon {
    font-size: 1.5rem;
}

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

.nav-links a {
    color: var(--text-medium);
    font-weight: 500;
    transition: color 0.2s ease;
}

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

.btn-nav {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* Hero Section */
.hero {
    padding: 4rem 0 5rem;
    background: linear-gradient(180deg, var(--bg-light) 0%, var(--bg-white) 100%);
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 4rem;
    align-items: center;
}

.badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(79, 70, 229, 0.1) 100%);
    color: var(--primary-color);
    border-radius: var(--radius-2xl);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.hero h1 {
    margin-bottom: 1.5rem;
    font-size: 3rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-medium);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.hero-cta {
    margin-bottom: 2rem;
}

.cta-note {
    margin-top: 0.75rem;
    font-size: 0.875rem;
    color: var(--secondary-color);
    font-weight: 500;
}

.trust-badges {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-medium);
}

.trust-icon {
    color: var(--secondary-color);
    font-weight: bold;
}

/* Promo Card */
.promo-card {
    background: white;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.promo-card-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    padding: 1rem;
    text-align: center;
}

.promo-label {
    color: white;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.1em;
}

.promo-card-body {
    padding: 2rem;
    text-align: center;
}

.discount-value {
    font-size: 4rem;
    font-weight: 800;
    color: var(--primary-color);
    line-height: 1;
}

.discount-text {
    font-size: 1.25rem;
    color: var(--text-dark);
    font-weight: 600;
    margin-bottom: 1rem;
}

.promo-details {
    color: var(--text-medium);
    font-size: 0.875rem;
}

.promo-details p {
    margin: 0.25rem 0;
}

.promo-card-footer {
    padding: 1.5rem 2rem 2rem;
}

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

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

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

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    margin-bottom: 0.75rem;
}

.feature-card p {
    color: var(--text-medium);
    font-size: 0.9375rem;
}

/* CTA Banner */
.cta-banner {
    padding: 4rem 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
}

.cta-content {
    text-align: center;
    color: white;
}

.cta-content h2 {
    color: white;
    margin-bottom: 1rem;
}

.cta-content p {
    opacity: 0.9;
    margin-bottom: 2rem;
    font-size: 1.125rem;
}

/* How it works */
.how-it-works {
    padding: 5rem 0;
    background: var(--bg-light);
}

.steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 3rem;
}

.step {
    text-align: center;
    padding: 2rem;
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 1.5rem;
}

.step h3 {
    margin-bottom: 0.75rem;
}

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

.steps-cta {
    text-align: center;
}

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

.faq-list {
    max-width: 800px;
    margin: 2rem auto 0;
}

.faq-item {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    margin-bottom: 1rem;
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: 1.25rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: white;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-dark);
    text-align: left;
    transition: background-color 0.2s ease;
}

.faq-question:hover {
    background: var(--bg-light);
}

.faq-icon {
    font-size: 1.5rem;
    color: var(--primary-color);
    transition: transform 0.3s ease;
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0 1.5rem;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item.active .faq-answer {
    padding: 0 1.5rem 1.5rem;
    max-height: 500px;
}

.faq-answer p {
    color: var(--text-medium);
    line-height: 1.7;
}

/* Final CTA */
.final-cta {
    padding: 5rem 0;
    background: var(--bg-light);
}

.final-cta-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

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

.final-cta-content > p {
    color: var(--text-medium);
    margin-bottom: 2rem;
    font-size: 1.125rem;
}

.final-note {
    margin-top: 1rem;
    font-size: 0.875rem;
    color: var(--text-light);
}

/* Footer */
.footer {
    background: var(--text-dark);
    color: white;
    padding: 4rem 0 2rem;
}

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

.footer-section h4 {
    color: white;
    margin-bottom: 1rem;
    font-size: 1rem;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
    line-height: 1.7;
}

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

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

.footer-section ul a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
    transition: color 0.2s ease;
}

.footer-section ul a:hover {
    color: white;
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .hero-visual {
        max-width: 400px;
        margin: 0 auto;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.5rem;
    }

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

    .nav-links {
        display: none;
    }

    .btn-nav {
        display: none;
    }

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

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

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

    .trust-badges {
        flex-direction: column;
        gap: 0.75rem;
    }
}

/* Page specific styles */
.page-header {
    padding: 4rem 0 3rem;
    background: linear-gradient(180deg, var(--bg-light) 0%, var(--bg-white) 100%);
    text-align: center;
}

.page-header h1 {
    margin-bottom: 1rem;
}

.page-header p {
    color: var(--text-medium);
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto;
}

.content-section {
    padding: 4rem 0;
}

.content-section h2 {
    text-align: left;
    margin-bottom: 1.5rem;
}

.content-section p {
    color: var(--text-medium);
    margin-bottom: 1rem;
    line-height: 1.8;
}

.content-section ul {
    margin: 1rem 0 1.5rem 1.5rem;
    color: var(--text-medium);
}

.content-section ul li {
    margin-bottom: 0.5rem;
    line-height: 1.7;
}

.content-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 2rem;
    margin-bottom: 2rem;
}

.inline-cta {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(79, 70, 229, 0.1) 100%);
    border-radius: var(--radius-xl);
    padding: 2rem;
    text-align: center;
    margin: 2rem 0;
}

.inline-cta h3 {
    margin-bottom: 0.75rem;
}

.inline-cta p {
    margin-bottom: 1rem;
}

/* Comparison table */
.comparison-table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
}

.comparison-table th,
.comparison-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.comparison-table th {
    background: var(--bg-light);
    font-weight: 600;
}

.comparison-table tr:hover {
    background: var(--bg-light);
}

/* Breadcrumb */
.breadcrumb {
    padding: 1rem 0;
    font-size: 0.875rem;
}

.breadcrumb a {
    color: var(--text-light);
}

.breadcrumb span {
    color: var(--text-light);
    margin: 0 0.5rem;
}

/* Mobile menu */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
}

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
    }
}