/* Custom Fonts */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Plus+Jakarta+Sans:wght@300;400;500;600;700&display=swap');

:root {
    --bg-primary: #f0f7ff;
    --bg-secondary: #e0f2fe;
    --bg-card: rgba(255, 255, 255, 0.85);
    --bg-card-hover: rgba(255, 255, 255, 0.95);
    --border-color: rgba(59, 130, 246, 0.12);
    --border-color-hover: #2563eb;
    
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #64748b;
    
    --primary-color: #2563eb;
    --primary-gradient: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    --accent-color: #0284c7;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    
    --shadow-sm: 0 2px 8px rgba(59, 130, 246, 0.05);
    --shadow-md: 0 8px 24px rgba(59, 130, 246, 0.08);
    --shadow-lg: 0 16px 48px rgba(59, 130, 246, 0.12);
    
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
    --transition-smooth: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    
    --header-height: 70px;
    --sidebar-width: 280px;
}

[data-theme="light"] {
    --bg-primary: #f0f7ff;
    --bg-secondary: #e0f2fe;
    --bg-card: rgba(255, 255, 255, 0.85);
    --bg-card-hover: rgba(255, 255, 255, 0.95);
    --border-color: rgba(59, 130, 246, 0.12);
    --border-color-hover: #2563eb;
    
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #64748b;
    
    --primary-color: #2563eb;
    --accent-color: #0284c7;
    
    --shadow-sm: 0 2px 8px rgba(59, 130, 246, 0.05);
    --shadow-md: 0 8px 24px rgba(59, 130, 246, 0.08);
    --shadow-lg: 0 16px 48px rgba(59, 130, 246, 0.12);
}

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

html, body {
    width: 100%;
    min-height: 100vh;
    background-image: linear-gradient(rgba(240, 247, 255, 0.85), rgba(240, 247, 255, 0.9)), url('assets/bay-bg.png');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    background-repeat: no-repeat;
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    scroll-behavior: smooth;
    transition: background-color 0.25s ease, color 0.25s ease;
}

/* Canvas Background */
#bg-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    pointer-events: none;
    opacity: 0.8;
}

a {
    color: var(--primary-color);
    text-decoration: underline;
    text-underline-offset: 4px;
    transition: var(--transition-smooth);
}

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

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.3;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

/* Layout Grid */
.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
    transition: var(--transition-smooth);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.03em;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.search-box {
    position: relative;
    display: flex;
    align-items: center;
}

.search-box input {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.5rem 1rem 0.5rem 2.5rem;
    border-radius: 4px;
    outline: none;
    font-size: 0.875rem;
    width: 240px;
    transition: var(--transition-smooth);
}

.search-box input:focus {
    width: 300px;
    border-color: var(--border-color-hover);
}

.search-box i {
    position: absolute;
    left: 1rem;
    color: var(--text-secondary);
}

.theme-toggle-btn {
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    font-size: 1.1rem;
    padding: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
}

.theme-toggle-btn:hover {
    opacity: 0.7;
}

/* Page wrapper layout */
.main-wrapper {
    display: flex;
    margin-top: var(--header-height);
    flex: 1;
    position: relative;
}

/* Sidebar */
aside.sidebar {
    width: var(--sidebar-width);
    position: fixed;
    top: var(--header-height);
    bottom: 0;
    left: 0;
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    padding: 2rem 1.5rem;
    overflow-y: auto;
    z-index: 90;
    transition: var(--transition-smooth);
}

.sidebar-section {
    margin-bottom: 2.5rem;
}

.sidebar-section h3 {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    margin-bottom: 1rem;
    font-weight: 700;
}

.sidebar-menu {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.sidebar-menu a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    color: var(--text-secondary);
    border-radius: 4px;
    font-weight: 500;
    font-size: 0.95rem;
    text-decoration: none;
}

.sidebar-menu a:hover, .sidebar-menu li.active a {
    color: var(--text-primary);
    background: var(--bg-card);
    border-left: 2px solid var(--primary-color);
    padding-left: calc(1rem - 2px);
}

/* Sidebar Airport Recommendation widget */
.sidebar-widget {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 1.25rem;
    margin-top: 1.5rem;
}

.sidebar-widget h4 {
    font-size: 0.9rem;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.widget-item {
    display: block;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
    text-decoration: none;
}

.widget-item:last-child {
    border-bottom: none;
}

.widget-item .name {
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.widget-item .tag {
    font-size: 0.7rem;
    border: 1px solid var(--text-primary);
    color: var(--text-primary);
    padding: 1px 6px;
    border-radius: 2px;
    font-weight: 700;
}

.widget-item .desc {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

/* Main Content Area */
main.content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 3rem;
    max-width: 1100px;
    transition: var(--transition-smooth);
}

main.content.post-page {
    max-width: 860px;
}

/* Article Styling */
.post-header {
    margin-bottom: 2.5rem;
}

.post-meta {
    display: flex;
    gap: 1.5rem;
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.post-title {
    font-size: 2.75rem;
    font-weight: 800;
    margin-bottom: 1rem;
    letter-spacing: -0.03em;
}

.post-content {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.post-content p {
    margin-bottom: 1.5rem;
}

.post-content blockquote {
    background: var(--bg-card);
    border-left: 2px solid var(--primary-color);
    padding: 1rem 1.5rem;
    border-radius: 0 4px 4px 0;
    margin: 2rem 0;
    font-style: italic;
}

.post-content blockquote p {
    margin: 0;
    color: var(--text-primary);
}

.post-content h2 {
    font-size: 1.75rem;
    margin-top: 3rem;
    margin-bottom: 1.25rem;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.post-content h3 {
    font-size: 1.35rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.post-content ul, .post-content ol {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
}

.post-content li {
    margin-bottom: 0.5rem;
}

/* Beautiful custom buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 4px;
    font-weight: 700;
    font-size: 0.95rem;
    cursor: pointer;
    text-decoration: none;
    transition: var(--transition-smooth);
}

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

.btn-primary:hover {
    background: transparent;
    color: var(--text-primary);
}

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

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

/* Glass card design (Strict Grayscale) */
.glass-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 2rem;
    margin-bottom: 2.5rem;
    transition: var(--transition-smooth);
}

.glass-card:hover {
    border-color: var(--border-color-hover);
    box-shadow: var(--shadow-md);
}

/* Tables design */
.table-responsive {
    overflow-x: auto;
    margin: 2.5rem 0;
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    background: var(--bg-card);
}

th, td {
    padding: 1.1rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
}

th {
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.05em;
}

tr:last-child td {
    border-bottom: none;
}

tr:hover td {
    background: var(--bg-card-hover);
}

/* User Reviews Section */
.reviews-section {
    margin-top: 4rem;
}

.reviews-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.75rem;
}

.reviews-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.review-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 1.5rem;
}

.review-meta {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.75rem;
    align-items: center;
}

.review-user {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 4px;
    background: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--text-primary);
}

.user-info .name {
    font-weight: 600;
    font-size: 0.95rem;
}

.user-info .date {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.stars {
    color: var(--text-primary);
    display: flex;
    gap: 2px;
    font-size: 0.85rem;
}

.review-content {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

/* Add Review Form */
.review-form {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.form-group input, .form-group textarea, .form-group select {
    width: 100%;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 0.75rem 1rem;
    color: var(--text-primary);
    font-family: inherit;
    outline: none;
    transition: var(--transition-smooth);
}

.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
    border-color: var(--border-color-hover);
}

.rating-select {
    display: flex;
    gap: 1rem;
    align-items: center;
}

/* FAQ Accordion Section */
.faq-section {
    margin-top: 4rem;
    margin-bottom: 4rem;
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    overflow: hidden;
    transition: var(--transition-smooth);
}

.faq-question {
    padding: 1.25rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-weight: 700;
    user-select: none;
    transition: var(--transition-smooth);
}

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

.faq-answer {
    max-height: 0;
    overflow: hidden;
    padding: 0 1.5rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
    transition: max-height 0.25s cubic-bezier(0, 1, 0, 1), padding 0.25s ease;
}

.faq-item.active .faq-answer {
    max-height: 1000px;
    padding: 0 1.5rem 1.5rem 1.5rem;
    transition: max-height 0.25s cubic-bezier(1, 0, 1, 0), padding 0.25s ease;
}

.faq-icon {
    font-size: 0.9rem;
    color: var(--text-secondary);
    transition: var(--transition-smooth);
}

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

/* Homepage styling */
.homepage-title {
    font-size: 3rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 1rem;
    letter-spacing: -0.04em;
}

.homepage-subtitle {
    text-align: center;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 3rem auto;
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
}

.grid-section-header {
    grid-column: 1 / -1;
    font-size: 1.6rem;
    color: var(--text-primary);
}

.article-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    display: flex;
    flex-direction: column;
    transition: var(--transition-smooth);
}

.article-card:hover {
    border-color: var(--border-color-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.card-body {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.card-tag {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    margin-bottom: 0.5rem;
    letter-spacing: 0.05em;
}

.card-title {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    line-height: 1.4;
}

.card-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border-color);
    padding-top: 1.25rem;
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Footer Section */
footer.main-footer {
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
    padding: 3rem 2rem;
    margin-top: auto;
    z-index: 80;
    margin-left: var(--sidebar-width);
}

.footer-content {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2.5rem;
    margin-bottom: 3rem;
}

.footer-section h4 {
    font-size: 1rem;
    margin-bottom: 1.25rem;
    color: var(--text-primary);
    position: relative;
    padding-bottom: 0.5rem;
}

.footer-section h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 20px;
    height: 1px;
    background: var(--text-primary);
}

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

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-links a {
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-decoration: none;
}

.footer-links a:hover {
    color: var(--text-primary);
    padding-left: 4px;
}

.footer-bottom {
    max-width: 1100px;
    margin: 0 auto;
    border-top: 1px solid var(--border-color);
    padding-top: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.friendship-links {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.friendship-links a {
    color: var(--text-secondary);
    font-weight: 500;
    text-decoration: underline;
}

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

/* Hamburguer menu button for mobile */
.menu-toggle {
    display: none;
    font-size: 1.25rem;
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
}

/* Mobile responsive styling */
@media (max-width: 1024px) {
    aside.sidebar {
        transform: translateX(-100%);
    }
    
    aside.sidebar.active {
        transform: translateX(0);
    }
    
    main.content {
        margin-left: 0;
    }
    
    footer.main-footer {
        margin-left: 0;
    }
    
    .menu-toggle {
        display: block;
    }
}

.header-title {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 45%;
    pointer-events: none;
}

@media (max-width: 1024px) {
    .header-title {
        display: none;
    }
}

@media (max-width: 768px) {
    header {
        padding: 0 1rem;
    }
    
    .search-box input {
        width: 140px;
    }
    
    .search-box input:focus {
        width: 180px;
    }
    
    main.content {
        padding: 2rem 1.5rem;
    }
    
    .post-title {
        font-size: 2rem;
    }
    
    .reviews-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .footer-bottom {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
}

/* Right Sidebar for Desktop Recommended Airports list */
.right-sidebar {
    display: none;
}

@media (min-width: 1200px) {
    .right-sidebar {
        display: block;
        position: fixed;
        top: var(--header-height);
        bottom: 0;
        right: 0;
        width: 280px;
        background-color: var(--bg-secondary);
        border-left: 1px solid var(--border-color);
        padding: 2rem 1.25rem;
        overflow-y: auto;
        z-index: 90;
    }
    
    main.content {
        margin-right: 280px;
    }
    
    footer.main-footer {
        margin-right: 280px;
    }
    
    .right-sidebar h3 {
        font-size: 1rem;
        font-weight: 700;
        margin-top: 0;
        margin-bottom: 1.5rem;
        border-bottom: 1px solid var(--border-color);
        padding-bottom: 0.75rem;
        display: flex;
        align-items: center;
        gap: 0.5rem;
        color: var(--text-primary);
    }
    
    .recommended-list {
        display: flex;
        flex-direction: column;
        gap: 1rem;
    }
    
    .rec-item {
        display: block;
        background: var(--bg-card);
        border: 1px solid var(--border-color);
        border-radius: 4px;
        padding: 1rem;
        text-decoration: none;
        transition: var(--transition-smooth);
    }
    
    .rec-item:hover {
        border-color: var(--text-primary);
        transform: translateX(2px);
    }
    
    .rec-name {
        font-size: 0.9rem;
        font-weight: 700;
        color: var(--text-primary);
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 0.25rem;
    }
    
    .rec-item .tag {
        font-size: 0.7rem;
        background: var(--border-color);
        color: var(--text-secondary);
        padding: 1px 6px;
        border-radius: 2px;
        font-weight: 700;
        transition: var(--transition-smooth);
    }
    
    .rec-item:hover .tag {
        background: var(--text-primary);
        color: var(--bg-primary);
    }
    
    .rec-desc {
        font-size: 0.75rem;
        color: var(--text-muted);
        line-height: 1.4;
    }
}

@media (min-width: 1200px) and (max-width: 1400px) {
    main.content {
        padding: 2.5rem 1.5rem;
    }
}