/**
 * Main Stylesheet - Modern Dark UI
 * Tech Tutorials Website
 */

/* ===== Cookie Consent Banner ===== */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--bg-card);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--spacing-md);
    z-index: 10000;
    transform: translateY(100%);
    transition: transform 0.3s ease-out;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.5);
}

.cookie-banner-visible {
    transform: translateY(0);
}

.cookie-banner-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.cookie-banner-icon {
    flex-shrink: 0;
}

.cookie-banner-icon img {
    width: 48px;
    height: 48px;
    object-fit: contain;
    border-radius: var(--radius-sm);
}

.cookie-banner-text {
    flex: 1;
    min-width: 250px;
}

.cookie-banner-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--accent-orange, #FFA500);
    margin: 0 0 0.5rem 0;
}

.cookie-banner-description {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.6;
}

.cookie-banner-actions {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    flex-shrink: 0;
}

.cookie-btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: var(--font-primary);
}

.cookie-btn-accept {
    background: var(--accent-purple);
    color: var(--text-primary);
}

.cookie-btn-accept:hover {
    background: #8B3CD0;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(123, 44, 191, 0.4);
}

.cookie-btn-deny {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid transparent;
}

.cookie-btn-deny:hover {
    color: var(--accent-blue);
    background: rgba(0, 212, 255, 0.1);
}

.cookie-btn-selection {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--accent-orange, #FFA500);
}

.cookie-btn-selection:hover {
    background: rgba(255, 165, 0, 0.1);
    border-color: #FFB733;
}

/* Cookie Preferences Modal */
.cookie-preferences {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
    z-index: 10001;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.cookie-preferences-visible {
    opacity: 1;
}

.cookie-preferences-content {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.cookie-preferences-visible .cookie-preferences-content {
    transform: scale(1);
}

.cookie-preferences-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.cookie-preferences-header h2 {
    margin: 0;
    font-size: 1.5rem;
    color: var(--text-primary);
}

.cookie-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 2rem;
    line-height: 1;
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: all 0.3s ease;
}

.cookie-close:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.cookie-preferences-body {
    padding: var(--spacing-md);
}

.cookie-preferences-body > p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.cookie-category {
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
}

.cookie-category-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.cookie-category-header h3 {
    margin: 0;
    font-size: 1.1rem;
    color: var(--text-primary);
}

.cookie-category p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Cookie Toggle Switch */
.cookie-toggle {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 26px;
}

.cookie-toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}

.cookie-toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--bg-tertiary);
    transition: 0.3s;
    border-radius: 26px;
}

.cookie-toggle-slider:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 3px;
    bottom: 3px;
    background-color: var(--text-secondary);
    transition: 0.3s;
    border-radius: 50%;
}

.cookie-toggle input:checked + .cookie-toggle-slider {
    background-color: var(--accent-orange, #FFA500);
}

.cookie-toggle input:checked + .cookie-toggle-slider:before {
    transform: translateX(24px);
    background-color: var(--text-primary);
}

.cookie-toggle input:disabled + .cookie-toggle-slider {
    opacity: 0.5;
    cursor: not-allowed;
}

.cookie-preferences-footer {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    justify-content: flex-end;
}

.cookie-btn-primary {
    background: var(--accent-purple);
    color: var(--text-primary);
}

.cookie-btn-primary:hover {
    background: #8B3CD0;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(123, 44, 191, 0.4);
}

.cookie-btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.cookie-btn-secondary:hover {
    background: var(--bg-secondary);
    border-color: rgba(255, 255, 255, 0.2);
}

/* Responsive */
@media (max-width: 768px) {
    .cookie-banner-content {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .cookie-banner-actions {
        width: 100%;
        flex-direction: column;
    }
    
    .cookie-btn {
        width: 100%;
    }
    
    .cookie-preferences-content {
        max-width: 100%;
        margin: var(--spacing-sm);
    }
    
    .cookie-preferences-footer {
        flex-direction: column;
    }
    
    .cookie-btn-primary,
    .cookie-btn-secondary {
        width: 100%;
    }
}

/* ===== CSS Variables ===== */

/* ===== CSS Variables ===== */
:root {
    /* Colors */
    --bg-primary: #0a0e27;
    --bg-secondary: #131829;
    --bg-tertiary: #1a1f35;
    --bg-card: #1e2339;
    --bg-header: #131829;
    
    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #b4b9d1;
    --text-muted: #7a7f9a;
    
    /* Accent Colors */
    --accent-blue: #00D4FF;
    --accent-purple: #7B2CBF;
    --accent-cyan: #00F5FF;
    --accent-pink: #E63946;
    --accent-orange: #FFA500;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #00D4FF 0%, #7B2CBF 100%);
    --gradient-secondary: linear-gradient(135deg, #7B2CBF 0%, #E63946 100%);
    --gradient-card-1: linear-gradient(135deg, #00D4FF 0%, #7B2CBF 100%);
    --gradient-card-2: linear-gradient(135deg, #7B2CBF 0%, #E63946 100%);
    --gradient-card-3: linear-gradient(135deg, #00F5FF 0%, #00D4FF 100%);
    --gradient-card-4: linear-gradient(135deg, #E63946 0%, #7B2CBF 100%);
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(0, 212, 255, 0.3);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-base: 16px;
    --font-size-sm: 0.875rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

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

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

/* ===== Header ===== */
.main-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--bg-header);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    box-shadow: var(--shadow-md);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
    gap: var(--spacing-md);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 600;
    font-size: var(--font-size-lg);
    color: var(--text-primary);
    text-decoration: none;
    transition: opacity var(--transition-fast);
    cursor: pointer;
}

.logo:hover {
    opacity: 0.8;
}

.logo svg {
    flex-shrink: 0;
}

.main-nav {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

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

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

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
    color: var(--text-primary);
}

.mobile-menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition-base);
}

/* ===== Hero Section ===== */
.hero {
    padding: var(--spacing-xl) 0;
    text-align: center;
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.hero h1 {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ===== Buttons ===== */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    font-size: var(--font-size-base);
    font-weight: 600;
    text-align: center;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    font-family: inherit;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--text-primary);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    color: var(--text-primary);
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-secondary:hover {
    background: var(--bg-tertiary);
    border-color: rgba(255, 255, 255, 0.2);
    color: var(--text-primary);
}

.btn-block {
    display: block;
    width: 100%;
}

/* ===== Tutorials Section ===== */
.tutorials-section {
    padding: var(--spacing-xl) 0;
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.posts-grid .post-card {
    min-width: 0;
    max-width: 100%;
    box-sizing: border-box;
}

.posts-grid .post-card * {
    max-width: 100%;
    box-sizing: border-box;
}

/* ===== Post Cards ===== */
.post-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    max-width: 100%;
    width: 100%;
}

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

.post-image {
    width: 100%;
    height: 150px;
    overflow: hidden;
    background: var(--bg-tertiary);
}

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

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

.post-content {
    padding: var(--spacing-sm);
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    word-wrap: break-word;
    word-break: break-word;
    min-width: 0;
}

.post-icon {
    margin-bottom: var(--spacing-xs);
}

.post-icon svg {
    width: 20px;
    height: 20px;
}

.post-content h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
    line-height: 1.4;
    word-wrap: break-word;
    word-break: break-word;
    overflow-wrap: break-word;
    max-width: 100%;
    overflow: hidden;
}

.post-content h3 a {
    color: inherit;
    display: block;
    width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
}

.post-content h3 a:hover {
    color: var(--accent-blue);
}

.post-content p {
    color: var(--text-secondary);
    font-size: 0.8rem;
    margin-bottom: var(--spacing-xs);
    flex: 1;
    line-height: 1.5;
    word-wrap: break-word;
    word-break: break-word;
    overflow-wrap: break-word;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
}

.read-more {
    color: var(--accent-blue);
    font-weight: 600;
    font-size: var(--font-size-sm);
    margin-top: auto;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    transition: gap var(--transition-fast);
}

.read-more:hover {
    gap: 0.5rem;
    color: var(--accent-cyan);
}

/* ===== Single Post Page ===== */
.post-page {
    padding: var(--spacing-lg) 0;
}

.post-single {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

.post-header h1 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.post-meta {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

.post-featured-image {
    margin: var(--spacing-md) 0;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.post-featured-image img {
    width: 100%;
    height: auto;
    display: block;
}

.post-content {
    margin: var(--spacing-md) 0;
    font-size: var(--font-size-lg);
    line-height: 1.8;
    color: var(--text-secondary);
}

.post-content p {
    margin-bottom: var(--spacing-sm);
}

.post-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    margin: var(--spacing-sm) 0;
    box-shadow: var(--shadow-md);
}

.post-content a {
    color: var(--accent-blue);
    text-decoration: underline;
}

.post-content a:hover {
    color: var(--accent-cyan);
}

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

.post-content em {
    font-style: italic;
}

.post-footer {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* ===== Pagination ===== */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
    flex-wrap: wrap;
}

.pagination span {
    color: var(--text-secondary);
    padding: 0 var(--spacing-sm);
}

/* ===== Footer ===== */
.main-footer {
    background: var(--bg-secondary);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: var(--spacing-xl) 0 var(--spacing-md);
    margin-top: var(--spacing-xl);
}

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

.footer-section h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.footer-section p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    text-decoration: none;
    color: var(--text-primary);
    transition: opacity var(--transition-fast);
    cursor: pointer;
}

.footer-logo:hover {
    opacity: 0.8;
}

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

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

.footer-section ul li a {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

.footer-section ul li a:hover {
    color: var(--accent-blue);
}

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

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    transition: all var(--transition-base);
}

.social-link:hover {
    background: var(--gradient-primary);
    color: var(--text-primary);
    transform: translateY(-2px);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

/* ===== Empty State ===== */
.empty-state {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-secondary);
}

.empty-state a {
    color: var(--accent-blue);
    text-decoration: underline;
}

/* ===== Categories Filter ===== */
.categories-filter {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-md);
}

.filter-form {
    width: 100%;
}

.filter-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-sm);
    align-items: end;
}

.filter-group {
    display: flex;
    flex-direction: column;
}

.filter-group label {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
}

.filter-select {
    width: 100%;
    padding: 0.75rem;
    background: var(--bg-tertiary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: inherit;
    font-size: var(--font-size-base);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.filter-select:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.filter-select:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.filter-actions {
    display: flex;
    gap: var(--spacing-xs);
    align-items: center;
}

.filter-actions .btn {
    white-space: nowrap;
}

@media (max-width: 768px) {
    .filter-row {
        grid-template-columns: 1fr;
    }
    
    .filter-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .filter-actions .btn {
        width: 100%;
    }
}

/* ===== Login & Setup Pages ===== */
.login-page,
.setup-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
    padding: var(--spacing-md);
}

.login-container,
.setup-container {
    width: 100%;
    max-width: 500px;
}

.login-card,
.setup-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
}

.login-header,
.setup-header {
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.login-header .logo,
.setup-header .logo {
    justify-content: center;
    margin-bottom: var(--spacing-sm);
}

.login-header h1,
.setup-header h1 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-xs);
}

.login-header p,
.setup-header p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.login-form,
.setup-form {
    margin-top: var(--spacing-md);
}

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

.form-section h2 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: var(--spacing-xs);
}

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

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

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group input[type="file"],
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    background: var(--bg-tertiary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: inherit;
    font-size: var(--font-size-base);
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 200px;
}

.alert {
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-sm);
}

.alert-error {
    background: rgba(230, 57, 70, 0.1);
    border: 1px solid rgba(230, 57, 70, 0.3);
    color: var(--accent-pink);
}

.alert-success {
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.3);
    color: var(--accent-blue);
}

.alert-success h3 {
    margin-bottom: var(--spacing-xs);
}

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
    .main-nav {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background: var(--bg-header);
        flex-direction: column;
        padding: var(--spacing-md);
        box-shadow: var(--shadow-lg);
        transform: translateX(-100%);
        transition: transform var(--transition-base);
        z-index: 999;
    }
    
    .main-nav.active {
        transform: translateX(0);
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    
    .hero h1 {
        font-size: var(--font-size-3xl);
    }
    
    .posts-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
}

/* ===== Content Pages ===== */
.content-page {
    max-width: 900px;
    margin: 0 auto;
}

.content-section {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.content-section:last-child {
    border-bottom: none;
}

.content-section h2 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.content-section h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.content-section p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-sm);
}

.feature-list,
.commitment-list {
    list-style: none;
    padding-left: 0;
    margin: var(--spacing-md) 0;
}

.feature-list li,
.commitment-list li {
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-md);
    position: relative;
    color: var(--text-secondary);
    line-height: 1.8;
}

.feature-list li::before,
.commitment-list li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--accent-blue);
}

.numbered-list {
    list-style: decimal;
    padding-left: var(--spacing-md);
    margin: var(--spacing-md) 0;
    color: var(--text-secondary);
    line-height: 1.8;
}

.numbered-list li {
    margin-bottom: var(--spacing-xs);
}

/* ===== Guides Grid ===== */
.guides-intro {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.guides-intro h2 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-sm);
}

.guides-intro p {
    color: var(--text-secondary);
    font-size: var(--font-size-lg);
}

.guides-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.guide-category-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    text-align: center;
}

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

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

.guide-category-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.guide-category-card p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-sm);
}

.guide-meta {
    margin: var(--spacing-sm) 0;
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

/* ===== Expertise Grid ===== */
.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-md) 0;
}

.expertise-item {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all var(--transition-base);
}

.expertise-item:hover {
    border-color: var(--accent-blue);
    transform: translateY(-2px);
}

.expertise-item h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.expertise-item p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin: 0;
}

/* ===== Tips Grid ===== */
.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-md) 0;
}

.tip-item {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    border-left: 3px solid var(--accent-blue);
}

.tip-item h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.tip-item p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin: 0;
}

/* ===== CTA Buttons ===== */
.cta-buttons {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
    flex-wrap: wrap;
}

/* ===== Contact QR Codes ===== */
.contact-qr-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
    align-items: start;
    justify-items: center;
}

.contact-qr-box {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    position: relative;
}

.contact-qr-box:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.qr-code-placeholder {
    width: 200px;
    height: 200px;
    min-width: 200px;
    min-height: 200px;
    max-width: 200px;
    max-height: 200px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-sm);
    border: 2px solid rgba(255, 255, 255, 0.1);
    overflow: hidden;
    flex-shrink: 0;
}

.qr-code-placeholder img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: var(--radius-sm);
}

.contact-qr-box h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.contact-qr-box p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-xs);
}

.qr-instruction {
    color: var(--text-muted);
    font-size: 0.75rem;
    margin-top: auto;
}

/* ===== Search Page ===== */
.search-container {
    max-width: 1200px;
    margin: 0 auto;
}

.search-form {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-md);
}

.search-input-group {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.search-input {
    flex: 1;
    padding: 1rem;
    background: var(--bg-tertiary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: var(--font-size-lg);
    font-family: inherit;
    transition: all var(--transition-fast);
}

.search-input:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.search-filters {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-sm);
}

.search-results-header {
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.search-results-header h2 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-xs);
}

.search-results-header p {
    color: var(--text-secondary);
}

.search-results mark {
    background: var(--accent-blue);
    color: var(--text-primary);
    padding: 2px 4px;
    border-radius: 3px;
}

@media (max-width: 768px) {
    .search-input-group {
        flex-direction: column;
    }
    
    .search-input-group .btn {
        width: 100%;
    }
    
    .contact-qr-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
    
    .qr-code-placeholder {
        width: 150px;
        height: 150px;
    }
    
    .guides-grid {
        grid-template-columns: 1fr;
    }
    
    .expertise-grid,
    .tips-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .cta-buttons .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: var(--font-size-2xl);
    }
    
    .section-title {
        font-size: var(--font-size-2xl);
    }
    
    .post-header h1 {
        font-size: var(--font-size-2xl);
    }
    
    .contact-qr-grid {
        grid-template-columns: 1fr;
    }
    
    .qr-code-placeholder {
        width: 200px;
        height: 200px;
    }
}

/* ===== Ad Container Styles ===== */
.ad-container {
    margin: var(--spacing-md) auto;
    text-align: center;
    max-width: 100%;
    overflow: hidden;
}

.ad-container.ad-position-after_navbar {
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.ad-container.ad-position-before_content,
.ad-container.ad-position-after_content {
    margin: var(--spacing-lg) auto;
}

.ad-container.ad-position-middle_content {
    margin: var(--spacing-xl) auto;
    padding: var(--spacing-md) 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.ad-container.ad-position-before_footer {
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}

/* Responsive ad containers */
@media (max-width: 768px) {
    .ad-container {
        margin: var(--spacing-sm) auto;
    }
    
    .ad-container.ad-position-middle_content {
        margin: var(--spacing-md) auto;
    }
}