/* TikFollowGrow - Main Stylesheet */

/* ==========================================================================
   Reset & Base Styles
   ========================================================================== */

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

:root {
    --primary-color: #FF0050;
    --secondary-color: #00F2EA;
    --dark-bg: #121212;
    --light-bg: #FFFFFF;
    --text-dark: #1F1F1F;
    --text-gray: #666666;
    --text-light: #999999;
    --border-color: #E5E5E5;
    --success-color: #00C853;
    --error-color: #D32F2F;
    --warning-color: #FF6D00;
    
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-heading: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    
    --transition: all 0.3s ease;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.16);
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-primary);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-dark);
    background-color: var(--light-bg);
}

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

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

a:hover {
    color: #CC0040;
}

/* ==========================================================================
   Typography
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.1rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: 1rem;
}

ul, ol {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
}

/* ==========================================================================
   Layout
   ========================================================================== */

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

.site-main {
    min-height: 60vh;
    padding: 40px 0;
}

/* ==========================================================================
   Header
   ========================================================================== */

.site-header {
    background: var(--light-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

.logo h1 {
    font-size: 1.75rem;
    margin: 0;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo .tagline {
    font-size: 0.875rem;
    color: var(--text-gray);
    margin: 0;
}

.logo a {
    text-decoration: none;
}

.main-nav ul {
    display: flex;
    list-style: none;
    gap: 30px;
    margin: 0;
    padding: 0;
}

.main-nav a {
    color: var(--text-dark);
    font-weight: 500;
    padding: 8px 0;
    position: relative;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

.main-nav a:hover::after {
    width: 100%;
}

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

.mobile-menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    border-radius: 2px;
    transition: var(--transition);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
    background: var(--dark-bg);
    color: #FFFFFF;
    padding: 60px 0 30px;
    margin-top: 80px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3,
.footer-section h4 {
    color: #FFFFFF;
    margin-bottom: 20px;
    font-size: 1.25rem;
}

.footer-section p {
    color: #CCCCCC;
    line-height: 1.6;
}

.footer-section ul {
    list-style: none;
    padding: 0;
}

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section a {
    color: #CCCCCC;
    transition: var(--transition);
}

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

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 30px;
    text-align: center;
    color: #999999;
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
    display: inline-block;
    padding: 12px 30px;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    border-radius: 8px;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    text-decoration: none;
}

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

.btn-primary:hover {
    background: #CC0040;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--text-dark);
    color: white;
}

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

.btn-light {
    background: white;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

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

/* ==========================================================================
   Breadcrumb
   ========================================================================== */

.breadcrumb {
    padding: 20px 0;
    margin-bottom: 20px;
}

.breadcrumb-list {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    list-style: none;
    padding: 0;
    margin: 0;
    gap: 8px;
}

.breadcrumb-item {
    font-size: 0.875rem;
    color: var(--text-gray);
}

.breadcrumb-item.active {
    color: var(--text-dark);
    font-weight: 500;
}

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

.breadcrumb-item a:hover {
    color: var(--primary-color);
}

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

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero-section {
    background: linear-gradient(135deg, #FF0050 0%, #00F2EA 100%);
    color: white;
    padding: 80px 0;
    text-align: center;
}

.hero-content h1 {
    color: white;
    font-size: 3rem;
    margin-bottom: 20px;
}

.hero-description {
    font-size: 1.25rem;
    max-width: 800px;
    margin: 0 auto 30px;
    opacity: 0.95;
}

.hero-cta {
    margin-top: 30px;
}

/* ==========================================================================
   Post Grid
   ========================================================================== */

.post-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 30px;
    margin: 40px 0;
}

.post-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.post-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.post-image {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16/9;
    background: var(--border-color);
}

.post-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.post-card:hover .post-image img {
    transform: scale(1.05);
}

.post-content {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.post-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.post-category {
    background: var(--primary-color);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.post-date {
    font-size: 0.875rem;
    color: var(--text-light);
}

.post-title {
    font-size: 1.25rem;
    margin: 0 0 12px;
    line-height: 1.4;
}

.post-title a {
    color: var(--text-dark);
}

.post-title a:hover {
    color: var(--primary-color);
}

.post-excerpt {
    color: var(--text-gray);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 16px;
    flex: 1;
}

.post-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.reading-time {
    font-size: 0.875rem;
    color: var(--text-light);
}

.read-more {
    font-weight: 600;
    font-size: 0.875rem;
}

/* ==========================================================================
   Post Detail
   ========================================================================== */

.post-detail {
    padding: 40px 0;
}

.post-header {
    max-width: 800px;
    margin: 0 auto 40px;
    text-align: center;
}

.post-header .post-title {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.post-author-info {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    margin-top: 20px;
    color: var(--text-gray);
    font-size: 0.875rem;
}

.post-featured-image {
    max-width: 1000px;
    margin: 0 auto 40px;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.image-credit {
    text-align: center;
    font-size: 0.875rem;
    color: var(--text-light);
    margin-top: 10px;
}

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

.post-body {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-dark);
}

.post-body h2 {
    margin-top: 40px;
    margin-bottom: 20px;
}

.post-body h3 {
    margin-top: 30px;
    margin-bottom: 15px;
}

.post-body ul,
.post-body ol {
    margin: 20px 0;
    padding-left: 30px;
}

.post-body li {
    margin-bottom: 10px;
}

.related-posts {
    max-width: 1200px;
    margin: 80px auto 0;
    padding-top: 60px;
    border-top: 2px solid var(--border-color);
}

.related-grid {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

/* ==========================================================================
   Sections
   ========================================================================== */

.section-title {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 40px;
    position: relative;
    padding-bottom: 15px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.section-cta {
    text-align: center;
    margin-top: 40px;
}

.featured-posts,
.recent-posts,
.categories-section,
.cta-section {
    padding: 60px 0;
}

.categories-section {
    background: #F9F9F9;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 24px;
    margin-top: 40px;
}

.category-card {
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    text-align: center;
}

.category-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.category-card h3 {
    color: var(--primary-color);
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.category-card p {
    color: var(--text-gray);
    font-size: 0.95rem;
    margin: 0;
}

.cta-section {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    text-align: center;
}

.cta-content h2 {
    color: white;
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.cta-content p {
    font-size: 1.25rem;
    margin-bottom: 30px;
    opacity: 0.95;
}

/* ==========================================================================
   Category Filter
   ========================================================================== */

.category-filter {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    margin: 30px 0;
}

.filter-item {
    padding: 8px 20px;
    background: white;
    border: 2px solid var(--border-color);
    border-radius: 25px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-dark);
    transition: var(--transition);
}

.filter-item:hover,
.filter-item.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

/* ==========================================================================
   Pagination
   ========================================================================== */

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin: 60px 0 40px;
}

.pagination-item {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-weight: 600;
    color: var(--text-dark);
    transition: var(--transition);
}

.pagination-item:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.pagination-item.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.pagination-item.disabled {
    border: none;
    cursor: default;
}

/* ==========================================================================
   Forms
   ========================================================================== */

.contact-form-wrapper,
.contact-info {
    background: white;
    padding: 40px;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 40px;
    margin-top: 40px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-dark);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition);
}

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

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

/* ==========================================================================
   Alerts
   ========================================================================== */

.alert {
    padding: 16px 20px;
    border-radius: 8px;
    margin-bottom: 24px;
}

.alert-success {
    background: #E8F5E9;
    border-left: 4px solid var(--success-color);
    color: #2E7D32;
}

.alert-error {
    background: #FFEBEE;
    border-left: 4px solid var(--error-color);
    color: #C62828;
}

.alert ul {
    margin: 0;
    padding-left: 20px;
}

/* ==========================================================================
   Legal Pages
   ========================================================================== */

.legal-section {
    padding: 40px 0;
}

.legal-content {
    max-width: 900px;
    margin: 0 auto;
}

.legal-content h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.last-updated {
    color: var(--text-light);
    font-size: 0.875rem;
    margin-bottom: 30px;
}

.legal-intro {
    background: #F9F9F9;
    padding: 24px;
    border-radius: 8px;
    margin-bottom: 40px;
}

.legal-section-item {
    margin-bottom: 40px;
}

.legal-section-item h2 {
    font-size: 1.75rem;
    margin-bottom: 16px;
    color: var(--primary-color);
}

.legal-section-item h3 {
    font-size: 1.25rem;
    margin-top: 24px;
    margin-bottom: 12px;
}

.legal-acceptance {
    background: #FFF3E0;
    border-left: 4px solid var(--warning-color);
    padding: 20px;
    margin-top: 40px;
    border-radius: 8px;
}

/* ==========================================================================
   About & Error Pages
   ========================================================================== */

.about-content,
.error-content {
    max-width: 900px;
    margin: 0 auto;
}

.value-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.value-item {
    background: #F9F9F9;
    padding: 30px;
    border-radius: 12px;
}

.value-item h3 {
    color: var(--primary-color);
    margin-bottom: 12px;
}

.error-section {
    padding: 100px 0;
    text-align: center;
}

.error-code {
    font-size: 8rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 20px;
}

.error-title {
    font-size: 2rem;
    margin-bottom: 16px;
}

.error-message {
    color: var(--text-gray);
    font-size: 1.125rem;
    margin-bottom: 40px;
}

.error-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */

@media (max-width: 968px) {
    .hero-content h1 {
        font-size: 2.25rem;
    }
    
    .hero-description {
        font-size: 1.1rem;
    }
    
    .post-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: 24px;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 30px;
    }
}

@media (max-width: 768px) {
    .main-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        box-shadow: var(--shadow-md);
        padding: 20px;
    }
    
    .main-nav.active {
        display: block;
    }
    
    .main-nav ul {
        flex-direction: column;
        gap: 0;
    }
    
    .main-nav li {
        border-bottom: 1px solid var(--border-color);
    }
    
    .main-nav a {
        display: block;
        padding: 15px 10px;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .hero-content h1 {
        font-size: 1.875rem;
    }
    
    .post-header .post-title {
        font-size: 2rem;
    }
    
    h1 { font-size: 2rem; }
    h2 { font-size: 1.5rem; }
    
    .post-grid {
        grid-template-columns: 1fr;
    }
    
    .category-grid {
        grid-template-columns: 1fr;
    }
    
    .error-code {
        font-size: 5rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .site-main {
        padding: 20px 0;
    }
    
    .featured-posts,
    .recent-posts,
    .categories-section,
    .cta-section {
        padding: 40px 0;
    }
    
    .hero-section {
        padding: 50px 0;
    }
    
    .contact-form-wrapper,
    .contact-info {
        padding: 24px;
    }
    
    .error-actions {
        flex-direction: column;
    }
    
    .value-grid {
        grid-template-columns: 1fr;
    }
}