:root {
    --primary-color: #6366f1;
    --accent-color: #06b6d4;
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border-color: #475569;
    --shadow-light: rgba(99, 102, 241, 0.1);
    --shadow-dark: rgba(0, 0, 0, 0.3);
    --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --max-width: 1200px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
}


* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}


h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: var(--spacing-sm);
}

h1 { font-size: clamp(1.8rem, 4vw, 2.5rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); }
h3 { font-size: clamp(1.3rem, 2.5vw, 1.75rem); }
h4 { font-size: clamp(1.1rem, 2vw, 1.5rem); }

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

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

a:hover {
    color: var(--accent-color);
}


.header {
    background: var(--bg-secondary);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo h1 {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0;
}

.nav-menu {
    display: flex;
    align-items: center;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--border-radius-sm);
    transition: background-color var(--transition-fast);
}

.nav-toggle:hover {
    background-color: var(--bg-tertiary);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.nav-link {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
    font-weight: 500;
    color: var(--text-secondary);
}

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


.hero {
    background: var(--gradient-primary);
    padding: var(--spacing-xl) var(--spacing-sm);
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

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

.hero h2 {
    color: white;
    margin-bottom: var(--spacing-sm);
}

.hero p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-lg);
}

.search-container {
    max-width: 500px;
    margin: 0 auto;
}

.search-box {
    position: relative;
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    padding: var(--spacing-sm);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.search-box i {
    color: rgba(255, 255, 255, 0.7);
    margin-right: var(--spacing-sm);
}

.search-box input {
    flex: 1;
    background: none;
    border: none;
    color: white;
    font-size: 1rem;
    outline: none;
}

.search-box input::placeholder {
    color: rgba(255, 255, 255, 0.6);
}


.main-content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
    min-height: calc(100vh - 140px);
}


.breadcrumb {
    padding: var(--spacing-sm) 0;
    color: var(--text-muted);
    font-size: 0.9rem;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: var(--spacing-lg);
}


.articles-section {
    margin-bottom: var(--spacing-xl);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.filter-info {
    color: var(--text-muted);
    font-size: 0.9rem;
}


.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.article-card {
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-color);
    transition: all var(--transition-medium);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.article-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform var(--transition-medium);
}

.article-card:hover::before {
    transform: scaleX(1);
}

.article-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px var(--shadow-dark);
    border-color: var(--primary-color);
}

.article-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    font-size: 0.85rem;
    color: var(--text-muted);
}

.article-category {
    background: var(--gradient-primary);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

.article-card h3 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.4;
}

.article-excerpt {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--border-color);
}

.read-time {
    color: var(--text-muted);
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.article-tags {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.tag {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    padding: 2px var(--spacing-xs);
    border-radius: 4px;
    font-size: 0.75rem;
}


.load-more-container {
    text-align: center;
    margin-top: var(--spacing-lg);
}

.load-more-btn {
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-medium);
}

.load-more-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px var(--shadow-light);
}

.load-more-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}


.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: var(--spacing-sm);
}

.modal-overlay.active {
    display: flex;
}

.modal-content {
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    max-width: 800px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    border: 1px solid var(--border-color);
    box-shadow: 0 20px 60px var(--shadow-dark);
}

.modal-close {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    background: var(--bg-tertiary);
    border: none;
    color: var(--text-primary);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    z-index: 1;
}

.modal-close:hover {
    background: var(--primary-color);
    color: white;
}

.article-detail {
    padding: var(--spacing-xl);
    padding-top: calc(var(--spacing-xl) + 40px);
}

.article-detail h1 {
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.article-detail .article-meta {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border-color);
}

.article-detail .article-content {
    line-height: 1.8;
    font-size: 1.1rem;
}

.article-detail .article-content h2,
.article-detail .article-content h3 {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.article-detail .article-content p {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

.article-detail .article-content ul,
.article-detail .article-content ol {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
    color: var(--text-secondary);
}

.article-detail .article-content li {
    margin-bottom: var(--spacing-xs);
}

.article-detail .article-content blockquote {
    border-left: 4px solid var(--primary-color);
    padding-left: var(--spacing-md);
    margin: var(--spacing-lg) 0;
    font-style: italic;
    color: var(--text-muted);
}

.share-buttons {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

.share-btn {
    background: var(--bg-tertiary);
    border: none;
    color: var(--text-secondary);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

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


.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    margin-top: var(--spacing-xl);
}

.footer-content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-sm);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.footer-section h4 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.footer-section p,
.footer-section li {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

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

.footer-section a {
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

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

.social-links {
    display: flex;
    gap: var(--spacing-sm);
}

.social-link {
    background: var(--bg-tertiary);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.social-link:hover {
    background: var(--primary-color);
    color: white;
}

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


.loading {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-muted);
}

.empty-state {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-muted);
}

.empty-state h3 {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}


@media (max-width: 768px) {
    .nav-toggle {
        display: block;
    }

    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-secondary);
        border: 1px solid var(--border-color);
        border-top: none;
        flex-direction: column;
        padding: var(--spacing-sm);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-medium);
    }

    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .hero {
        padding: var(--spacing-lg) var(--spacing-sm);
    }

    .articles-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .modal-content {
        margin: var(--spacing-sm);
        max-height: calc(100vh - 2rem);
    }

    .article-detail {
        padding: var(--spacing-lg);
        padding-top: calc(var(--spacing-lg) + 40px);
    }

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

@media (max-width: 480px) {
    :root {
        --spacing-sm: 0.75rem;
        --spacing-md: 1rem;
        --spacing-lg: 1.5rem;
        --spacing-xl: 2rem;
    }

    .hero h2 {
        font-size: 1.5rem;
    }

    .article-card {
        padding: var(--spacing-md);
    }

    .modal-content {
        margin: var(--spacing-xs);
        border-radius: var(--border-radius-sm);
    }

    .article-detail {
        padding: var(--spacing-md);
        padding-top: calc(var(--spacing-md) + 40px);
    }
}


@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.article-card {
    animation: fadeInUp 0.6s ease forwards;
}


.hidden {
    display: none !important;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}


button:focus-visible,
input:focus-visible,
a:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}


::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-color);
}


.signup-section {
    padding: var(--spacing-xl) 0;
    background: var(--bg-primary);
}

.signup-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.signup-info {
    display: flex;
    flex-direction: column;
    
}

.signup-info h2 {
    color: var(--text-primary);
    font-size: 2.5rem;
    margin-bottom: var(--spacing-lg);
    background: var(--gradient-primary);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.benefits-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.benefit-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.benefit-item i {
    width: 48px;
    height: 48px;
    color: var(--primary-color);
    flex-shrink: 0;
    margin-top: 4px;
}

.benefit-item h4 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    font-size: 1.25rem;
}

.benefit-item p {
    color: var(--text-secondary);
    line-height: 1.6;
}

.signup-form-card {
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-medium);
    overflow: hidden;
}

.form-header {
    background: var(--gradient-primary);
    padding: var(--spacing-lg);
    text-align: center;
    color: white;
}

.form-header h3 {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-xs);
}

.form-header p {
    opacity: 0.9;
    font-size: 1rem;
}

.signup-form {
    padding: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.form-group label,
.form-label {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: var(--spacing-xs);
}

.form-group input {
    padding: var(--spacing-md);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 1rem;
    transition: all var(--transition-medium);
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
    transform: translateY(-1px);
}

.form-group input.field-error {
    border-color: #ef4444;
    background-color: rgba(239, 68, 68, 0.05);
}

.categories-grid {
    display: grid;
    
    
    margin-top: var(--spacing-sm);
}

.category-card {
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    cursor: pointer;
    transition: all var(--transition-medium);
    position: relative;
    overflow: hidden;
}

.category-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.category-card input[type="checkbox"] {
    display: none;
}

.category-card input[type="checkbox"]:checked + .category-content {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(168, 85, 247, 0.1));
}

.category-card input[type="checkbox"]:checked + .category-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-primary);
    opacity: 0.1;
    border-radius: var(--border-radius);
}

.category-content {
    text-align: center;
    position: relative;
}

.category-content i {
    width: 40px;
    height: 40px;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.category-content h4 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    font-size: 1.1rem;
    font-weight: 600;
}

.category-content p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.4;
}

.terms-agreement {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    padding: var(--spacing-md);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-primary);
    transition: all var(--transition-medium);
}

.terms-agreement:hover {
    border-color: var(--primary-color);
}

.terms-agreement.field-error {
    border-color: #ef4444;
    background-color: rgba(239, 68, 68, 0.05);
}

.terms-agreement input[type="checkbox"] {
    display: none;
}

.terms-agreement .checkmark {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-radius: 4px;
    position: relative;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.terms-agreement input[type="checkbox"]:checked + .checkmark {
    background: var(--gradient-primary);
    border-color: var(--primary-color);
}

.terms-agreement input[type="checkbox"]:checked + .checkmark::after {
    content: '✓';
    color: white;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 12px;
    font-weight: bold;
}

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

.terms-text a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.terms-text a:hover {
    color: var(--accent-color);
    text-decoration: underline;
}

.signup-button {
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: var(--spacing-lg) var(--spacing-xl);
    border-radius: var(--border-radius);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-medium);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
    position: relative;
    overflow: hidden;
}

.signup-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left var(--transition-slow);
}

.signup-button:hover::before {
    left: 100%;
}

.signup-button:hover:not(:disabled) {
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(99, 102, 241, 0.4);
}

.signup-button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.signup-button i {
    width: 20px;
    height: 20px;
}



.form-error-message,
.form-success-message {
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
    font-size: 0.9rem;
}

.form-error-message {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.form-success-message {
    background: rgba(34, 197, 94, 0.1);
    color: #22c55e;
    border: 1px solid rgba(34, 197, 94, 0.2);
}

.field-error-message {
    color: #ef4444;
    font-size: 0.8rem;
    margin-top: var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}


.legal-document {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-sm);
}

.document-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.document-header h1 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.last-updated {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.document-content {
    line-height: 1.7;
}

.legal-section {
    margin-bottom: var(--spacing-xl);
}

.legal-section h2 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-xs);
    border-bottom: 2px solid var(--primary-color);
}

.legal-section h3 {
    color: var(--text-primary);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

.legal-section p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.legal-section ul {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
}

.legal-section li {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
    line-height: 1.6;
}

.legal-section strong {
    color: var(--text-primary);
    font-weight: 600;
}


@media (max-width: 768px) {
    .signup-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
        padding: 0 var(--spacing-sm);
    }
    
    .signup-info h2 {
        font-size: 2rem;
        text-align: center;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .categories-grid {
        grid-template-columns: 1fr;
    }
    
    .signup-form {
        padding: var(--spacing-lg);
    }
    
    .legal-document {
        padding: var(--spacing-lg) var(--spacing-sm);
    }
    
    .document-header {
        margin-bottom: var(--spacing-lg);
    }
}

@media (max-width: 480px) {
    .signup-info h2 {
        font-size: 1.75rem;
    }
    
    .benefit-item {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-sm);
    }
    
    .benefit-item i {
        margin-top: 0;
    }
    
    .signup-form {
        padding: var(--spacing-md);
    }
    
    .form-header {
        padding: var(--spacing-md);
    }
    
    .form-header h3 {
        font-size: 1.5rem;
    }
    
    .category-card {
        padding: var(--spacing-md);
    }
    
    .signup-button {
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: 1rem;
    }
}