/* Reset and base styles */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: local('Inter Regular'), local('Inter-Regular'),
         url('../fonts/inter.woff2') format('woff2'),
         url('../fonts/inter.woff') format('woff');
}

@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 600;
    font-display: swap;
    src: local('Inter SemiBold'), local('Inter-SemiBold'),
         url('../fonts/inter-semibold.woff2') format('woff2'),
         url('../fonts/inter-semibold.woff') format('woff');
}

@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 700;
    font-display: swap;
    src: local('Inter Bold'), local('Inter-Bold'),
         url('../fonts/inter-bold.woff2') format('woff2'),
         url('../fonts/inter-bold.woff') format('woff');
}

:root {
    --color-primary: #22c55e;
    --color-primary-dark: #16a34a;
    --color-secondary: #1a1a1a;
    --color-background: #000000;
    --color-surface: #1a1a1a;
    --color-surface-light: #262626;
    --color-text: #ffffff;
    --color-text-muted: #a3a3a3;
    --color-text-light: #d4d4d4;
    --color-border: #333333;
    --color-error: #ef4444;
    --color-warning: #f59e0b;
    --color-info: #3b82f6;
    
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.5;
    --line-height-heading: 1.2;
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    --border-radius: 8px;
    --border-radius-lg: 12px;
    --border-radius-xl: 16px;
    
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.3);
    
    --transition: all 0.2s ease-in-out;
    --transition-slow: all 0.3s ease-in-out;
}

html {
    scroll-behavior: smooth;
    font-size: var(--font-size-base);
}

body {
    font-family: var(--font-family);
    line-height: var(--line-height-base);
    color: var(--color-text);
    background-color: var(--color-background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    line-height: var(--line-height-heading);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: clamp(2rem, 4vw, 3.5rem);
    margin-bottom: var(--spacing-md);
}

h2 {
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    margin-bottom: var(--spacing-md);
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

p {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-light);
}

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

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

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-header h2 {
    margin-bottom: var(--spacing-sm);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--border-radius);
    border: 1px solid transparent;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    min-height: 44px;
}

.btn-primary {
    background-color: var(--color-primary);
    color: #000000;
    border-color: var(--color-primary);
}

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    color: #000000;
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-text);
    border-color: var(--color-border);
}

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

.btn-link {
    background-color: transparent;
    color: var(--color-text-muted);
    border-color: transparent;
    text-decoration: underline;
    text-underline-offset: 4px;
}

.btn-link:hover {
    color: var(--color-primary);
}

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

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
    max-width: 1200px;
    margin: 0 auto;
}

.nav-brand {
    flex-shrink: 0;
}

.logo {
    height: 32px;
    width: auto;
}

.nav-menu {
    display: flex;
    gap: var(--spacing-lg);
    margin-left: auto;
    margin-right: var(--spacing-xl);
}

.nav-link {
    color: var(--color-text);
    font-weight: 500;
    padding: var(--spacing-xs) 0;
    position: relative;
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--color-primary);
    transform: scaleX(0);
    transition: transform 0.2s ease-in-out;
}

.nav-link.active::after,
.nav-link:hover::after {
    transform: scaleX(1);
}

.nav-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.nav-burger {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-burger span {
    width: 24px;
    height: 2px;
    background-color: var(--color-text);
    transition: var(--transition);
}

.nav-burger[aria-expanded="true"] span:first-child {
    transform: rotate(45deg) translate(6px, 6px);
}

.nav-burger[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
}

.nav-burger[aria-expanded="true"] span:last-child {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* Hero Section */
.hero {
    padding: calc(80px + var(--spacing-3xl)) var(--spacing-md) var(--spacing-3xl);
    background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.hero-text h1 {
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
    line-height: 1.1;
}

.hero-text p {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xl);
}

.hero-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.hero-stats {
    display: flex;
    gap: var(--spacing-lg);
}

.stat {
    text-align: center;
    padding: var(--spacing-sm);
    background: var(--color-surface);
    border-radius: var(--border-radius);
    min-width: 80px;
}

.stat-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-phone {
    max-width: 100%;
    height: auto;
    filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.5));
}

/* Partners Section */
.partners {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-surface);
}

.partners-grid {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-xl);
    opacity: 0.6;
}

/* Features Section */
.features {
    padding: var(--spacing-3xl) 0;
}

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

.feature-card {
    background: var(--color-surface);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--color-border);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.feature-icon {
    margin-bottom: var(--spacing-md);
    display: flex;
    justify-content: center;
}

.feature-card h3 {
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

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

/* Payment Cards Section */
.payment-cards {
    padding: var(--spacing-3xl) 0;
    background: var(--color-surface);
}

.payment-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.payment-visual {
    display: flex;
    justify-content: center;
}

.payment-cards-svg {
    max-width: 100%;
    height: auto;
}

.payment-text h2 {
    margin-bottom: var(--spacing-md);
}

.payment-text p {
    margin-bottom: var(--spacing-xl);
    font-size: 1.125rem;
}

.payment-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.payment-feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text);
    font-weight: 500;
}

/* Analytics Section */
.analytics {
    padding: var(--spacing-3xl) 0;
}

.analytics-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.analytics-text h2 {
    margin-bottom: var(--spacing-md);
}

.analytics-text p {
    margin-bottom: var(--spacing-xl);
    font-size: 1.125rem;
}

.analytics-visual {
    display: flex;
    justify-content: center;
}

.analytics-dashboard {
    max-width: 100%;
    height: auto;
    filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.3));
}

/* CTA Section */
.cta {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, #16a34a 100%);
}

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

.cta h2 {
    color: #000000;
    margin-bottom: var(--spacing-md);
}

.cta p {
    color: #000000;
    opacity: 0.8;
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xl);
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
}

.cta .btn-primary {
    background-color: #000000;
    color: var(--color-primary);
    border-color: #000000;
}

.cta .btn-primary:hover {
    background-color: var(--color-surface);
}

.cta .btn-secondary {
    background-color: transparent;
    color: #000000;
    border-color: #000000;
}

.cta .btn-secondary:hover {
    background-color: rgba(0, 0, 0, 0.1);
}

/* Footer */
.footer {
    background: var(--color-surface);
    padding: var(--spacing-2xl) 0 var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 3fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-xl);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
}

.footer-column h4 {
    color: var(--color-text);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

.footer-column li {
    margin-bottom: var(--spacing-xs);
}

.footer-column a {
    color: var(--color-text-muted);
    font-size: 0.875rem;
    transition: var(--transition);
}

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

.footer-social {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.footer-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--color-background);
    border-radius: var(--border-radius);
    color: var(--color-text-muted);
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--color-primary);
    color: #000000;
}

.footer-bottom {
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
    text-align: center;
}

.footer-bottom p {
    color: var(--color-text-muted);
    font-size: 0.875rem;
    margin: 0;
}

.footer-bottom a {
    color: var(--color-text-muted);
}

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

/* Forms */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--color-text);
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    background: var(--color-surface);
    color: var(--color-text);
    font-family: inherit;
    font-size: 0.875rem;
    transition: var(--transition);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.form-checkbox {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.form-checkbox input {
    margin-top: 2px;
}

.form-checkbox label {
    font-size: 0.875rem;
    color: var(--color-text-light);
    line-height: 1.4;
}

.form-success {
    display: none;
    padding: var(--spacing-md);
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid var(--color-primary);
    border-radius: var(--border-radius);
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.form-success.show {
    display: block;
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.mb-0 {
    margin-bottom: 0;
}

.mb-sm {
    margin-bottom: var(--spacing-sm);
}

.mb-md {
    margin-bottom: var(--spacing-md);
}

.mb-lg {
    margin-bottom: var(--spacing-lg);
}

.mt-sm {
    margin-top: var(--spacing-sm);
}

.mt-md {
    margin-top: var(--spacing-md);
}

.mt-lg {
    margin-top: var(--spacing-lg);
}

/* Page Sections */
.page-header {
    padding: calc(80px + var(--spacing-xl)) 0 var(--spacing-xl);
    background: var(--color-surface);
    text-align: center;
}

.page-content {
    padding: var(--spacing-2xl) 0;
}

.content-wrapper {
    max-width: 800px;
    margin: 0 auto;
}

.content-wrapper h2 {
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}

.content-wrapper h3 {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

.content-wrapper ul,
.content-wrapper ol {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-md);
}

.content-wrapper li {
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-light);
}

/* Blog Styles */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.blog-card {
    background: var(--color-surface);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid var(--color-border);
}

.blog-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.blog-card-content {
    padding: var(--spacing-lg);
}

.blog-card h3 {
    margin-bottom: var(--spacing-sm);
}

.blog-card h3 a {
    color: var(--color-text);
    text-decoration: none;
}

.blog-card h3 a:hover {
    color: var(--color-primary);
}

.blog-excerpt {
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.blog-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

.blog-date {
    padding: 4px 8px;
    background: var(--color-background);
    border-radius: var(--border-radius);
    font-size: 0.75rem;
}

/* Article Styles */
.article-header {
    padding: calc(80px + var(--spacing-xl)) 0 var(--spacing-xl);
    background: var(--color-surface);
    text-align: center;
}

.article-meta {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-muted);
}

.article-content {
    padding: var(--spacing-2xl) 0;
}

.article-content h2 {
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-xs);
    border-bottom: 2px solid var(--color-primary);
}

.article-content h3 {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-content,
    .payment-content,
    .analytics-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .payment-visual,
    .analytics-visual {
        order: -1;
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-sm: 0.75rem;
        --spacing-md: 1rem;
        --spacing-lg: 1.5rem;
        --spacing-xl: 2rem;
        --spacing-2xl: 2.5rem;
        --spacing-3xl: 3rem;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .nav-menu {
        position: fixed;
        top: 60px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 60px);
        background: rgba(0, 0, 0, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding: var(--spacing-xl) 0;
        gap: var(--spacing-lg);
        transition: left 0.3s ease-in-out;
        margin: 0;
    }
    
    .nav-menu.show {
        left: 0;
    }
    
    .nav-actions {
        display: none;
    }
    
    .nav-burger {
        display: flex;
    }
    
    .hero {
        padding: calc(60px + var(--spacing-xl)) var(--spacing-sm) var(--spacing-xl);
        min-height: auto;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .payment-features {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }
    
    .partners-grid {
        flex-wrap: wrap;
        gap: var(--spacing-md);
    }
    
    .blog-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .footer-links {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-phone,
    .payment-cards-svg,
    .analytics-dashboard {
        max-width: 280px;
    }
}