/* ============================================================
   Osteoartritle Yaşam - Main Stylesheet
   ============================================================ */

/* CSS Variables */
:root {
    --primary: #FC7A1E;
    --primary-dark: #e0620c;
    --secondary: #F7B146;
    --dark-blue: #100079;
    --dark-blue-light: #1a00a8;
    --white: #ffffff;
    --light-bg: #f8f9fa;
    --text-dark: #1a1a2e;
    --text-muted: #6c757d;
    --border-color: #e0e0e0;
    --card-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
    --card-hover-shadow: 0 8px 30px rgba(16, 0, 121, 0.15);
    --border-radius: 12px;
    --transition: 0.25s ease;
}

/* ============================================================
   Base & Typography
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }

html {
    min-height: 100%;
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    font-family: 'Work Sans', Arial, Helvetica, sans-serif;
    color: var(--dark-blue);
    background: var(--white);
    line-height: 1.7;
    font-size: 16px;
}

main#main-content {
    flex: 1;
}

h1, h2, h3, h4, h5, h6 {
    font-family: Geologica, Arial, Helvetica, sans-serif;
    font-weight: 700;
    line-height: 1.3;
    color: var(--dark-blue);
}

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

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

.text-dark-blue { color: var(--dark-blue) !important; }
.text-primary { color: var(--primary) !important; }
.bg-primary { background: var(--primary) !important; color: white !important; }
.bg-secondary { background: var(--secondary) !important; color: white !important; }

/* ============================================================
   Reading Progress Bar
   ============================================================ */
#reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    z-index: 9999;
    transition: width 0.1s linear;
}

/* ============================================================
   Header & Navbar
   ============================================================ */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

.header-topbar {
    background: #ffffff;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.header-topbar .container {
    position: relative;
}

.site-logo-link {
    text-decoration: none;
    flex-shrink: 0;
    display: flex;
    align-items: center;
}

.site-logo-text {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: -0.5px;
}
.site-logo {
    max-height: 60px;
    width: auto;
}

.expanscience-text {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.75);
    font-weight: 500;
    letter-spacing: 0.5px;
}
.expanscience-logo img {
    max-height: 70px;
    width: auto;
}

.expanscience-logo {
    flex-shrink: 0;
    display: flex;
    align-items: center;
}

/* Navbar Center - Desktop Only */
.navbar-center {
    display: flex;
    justify-content: center;
    width: auto;
    max-width: calc(100% - 260px);
}

.navbar-center .navbar-nav {
    flex-direction: row;
}

.navbar-center .navbar-nav .nav-link {
    color: var(--dark-blue);
    font-weight: 500;
    padding: 0.5rem;
    transition: color var(--transition);
    position: relative;
}

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

.navbar-center .navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: all var(--transition);
    transform: translateX(-50%);
}

.navbar-center .navbar-nav .nav-link:hover::after,
.navbar-center .navbar-nav .nav-link.active::after {
    width: 60%;
}

/* Dropdown Menu */
.navbar-center .dropdown-menu,
.site-dropdown {
    padding: 0;
    border: none;
    background: white;
    border-radius: 0;
    box-shadow: 0 4px 15px rgba(0,0,0,0.12);
    margin-top: 0.5rem;
    overflow: visible;
}

.navbar-center .dropdown-menu .nav-link,
.site-dropdown .nav-link,
.navbar-center .dropdown-menu .dropdown-item,
.site-dropdown .dropdown-item {
    padding: 0.55rem 1.1rem;
    font-size: 0.9rem;
    color: var(--dark-blue);
    background: white;
    border: none;
    border-radius: 0;
}

.navbar-center .dropdown-menu .nav-link::after,
.site-dropdown .nav-link::after {
    display: none;
}

.navbar-center .dropdown-menu .nav-link:hover,
.navbar-center .dropdown-menu .nav-link:focus,
.site-dropdown .nav-link:hover,
.site-dropdown .nav-link:focus,
.navbar-center .dropdown-menu .dropdown-item:hover,
.navbar-center .dropdown-menu .dropdown-item:focus,
.site-dropdown .dropdown-item:hover,
.site-dropdown .dropdown-item:focus {
    background: var(--primary);
    color: white;
}

.navbar-center .dropdown-menu .dropdown-item.active,
.site-dropdown .dropdown-item.active {
    background: var(--primary);
    color: white;
}

/* Level-2 submenu — fly out to the right */
.dropdown-submenu {
    position: relative;
}
.dropdown-submenu > .dropdown-menu {
    position: absolute;
    top: 0;
    left: 100%;
    margin-top: 0;
    margin-left: 1px;
    display: none;
    padding: 0;
    border: none;
    border-radius: 0 6px 6px 6px;
    box-shadow: 4px 4px 15px rgba(0, 0, 0, 0.12);
    overflow: visible;
    z-index: 1050;
    white-space: nowrap;
}
.dropdown-submenu:hover > .dropdown-menu {
    display: block;
}
.dropdown-submenu .dropdown-item {
    padding: 0.55rem 1.1rem;
    font-size: 0.9rem;
    color: var(--dark-blue);
    background: white;
    border: none;
    border-radius: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.dropdown-submenu .dropdown-item i {
    margin-left: 0.5rem;
}
.dropdown-submenu > .dropdown-toggle::after {
    display: none;
}
.dropdown-submenu .dropdown-item:hover,
.dropdown-submenu .dropdown-item:focus,
.dropdown-submenu .dropdown-item.active {
    background: var(--primary);
    color: white;
}
/* Mobile Menu Button */
.btn-mobile-menu {
    background: none;
    border: none;
    padding: 0.5rem 0.75rem;
    color: var(--dark-blue);
    font-size: 1.5rem;
    cursor: pointer;
    transition: color var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

/* Offcanvas Menu */
.offcanvas {
    width: 85% !important;
}

.offcanvas-header {
    border-bottom: 1px solid var(--border-color);
}

.offcanvas-title {
    color: var(--dark-blue);
    font-weight: 700;
}

/* ============================================================
   Mobile Offcanvas Accordion Menu
   ============================================================ */
#mobileMenu .offcanvas-body {
    padding: 0;
    overflow-y: auto;
}

.mobile-nav {
    list-style: none;
    margin: 0;
    padding: 0;
}

.mobile-nav-item {
    border-bottom: 1px solid var(--border-color);
}

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

.mobile-nav-row {
    display: flex;
    align-items: stretch;
    min-height: 52px;
    transition: background-color var(--transition);
}

.mobile-nav-row:hover,
.mobile-nav-row.active {
    /*background-color: var(--primary);*/
}

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

.mobile-nav-row:hover .mobile-nav-toggle,
.mobile-nav-row.active .mobile-nav-toggle {
    border-left-color: rgba(255, 255, 255, 0.35);
    color: #fff;
}

.mobile-nav-link {
    flex: 1;
    display: flex;
    align-items: center;
    padding: 0.875rem 1.25rem;
    color: var(--dark-blue);
    font-weight: 500;
    font-size: 0.9375rem;
    text-decoration: none;
    transition: color var(--transition);
}

.mobile-nav-label {
    flex: 1;
    display: flex;
    align-items: center;
    padding: 0.875rem 1.25rem;
    color: var(--dark-blue);
    font-weight: 500;
    font-size: 0.9375rem;
    cursor: default;
    user-select: none;
    transition: color var(--transition);
}

.mobile-nav-toggle {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    min-height: 52px;
    background: transparent;
    border: none;
    border-left: 1px solid var(--border-color);
    color: var(--dark-blue);
    cursor: pointer;
    transition: background-color var(--transition), color var(--transition), border-color var(--transition);
    padding: 0;
    line-height: 1;
}

.mobile-nav-toggle i {
    font-size: 0.8125rem;
    pointer-events: none;
    transition: transform var(--transition);
}

.mobile-nav-toggle[aria-expanded="true"] {
    background-color: var(--primary-dark);
    color: #fff;
    border-left-color: var(--primary-dark);
}

.mobile-nav-toggle[aria-expanded="true"] i {
    transform: rotate(180deg);
}

/* Level 1 sub-menu */
.mobile-nav-level-1 {
    background-color: rgba(16, 0, 121, 0.03);
    padding-left: 1rem;
}

.mobile-nav-level-1 > .mobile-nav-item {
    border-bottom: 1px solid rgba(0, 0, 0, 0.07);
}

.mobile-nav-level-1 > .mobile-nav-item:last-child {
    border-bottom: none;
}

.mobile-nav-level-1 .mobile-nav-link,
.mobile-nav-level-1 .mobile-nav-label {
    padding-left: 1.25rem;
    font-size: 0.875rem;
}

/* Level 2 sub-menu */
.mobile-nav-level-2 {
    background-color: rgba(16, 0, 121, 0.06);
    padding-left: 0.75rem;
}

.mobile-nav-level-2 > .mobile-nav-item {
    border-bottom: 1px solid rgba(0, 0, 0, 0.07);
}

.mobile-nav-level-2 > .mobile-nav-item:last-child {
    border-bottom: none;
}

.mobile-nav-level-2 .mobile-nav-link,
.mobile-nav-level-2 .mobile-nav-label {
    padding-left: 1rem;
    font-size: 0.8125rem;
}

/* ============================================================
   Breadcrumb
   ============================================================ */
.breadcrumb-wrapper {
    background: var(--light-bg);
    border-bottom: 1px solid var(--border-color);
}

.breadcrumb {
    font-size: 0.875rem;
    --bs-breadcrumb-divider: '›';
}
.breadcrumb-item a {
    color: var(--dark-blue);
    text-decoration: none;
}
.breadcrumb-item a:hover { color: var(--primary); }
.breadcrumb-item.active { color: var(--text-muted); }

/* ============================================================
   Hero Section
   ============================================================ */
.hero-section {
    color: white;
    padding: 80px 0;
    position: relative;
    overflow: hidden;
    min-height: 60vh;
    display: flex;
    align-items: center;
}

@media (min-width: 992px) {
    .hero-section {
        background: url('/images/hero-bg.webp') center/cover no-repeat;
    }
}

@media (max-width: 991px) {
    .hero-section {
        background: var(--secondary);
        background-attachment: fixed, scroll;
    }
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(252,122,30,0.2) 0%, transparent 70%);
    pointer-events: none;
    display: none;
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 600;
    color: white;
    margin-bottom: 1rem;
    position: relative;
    z-index: 2;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: rgba(255,255,255,0.95);
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    position: relative;
    z-index: 2;
}

.hero-search-input-group {
    max-width: 600px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.hero-search-input-group .form-control {
    border: none;
    font-size: 1rem;
    padding: 0.75rem 1.25rem;
    border-radius: 8px 0 0 8px !important;
}

.min-vh-40 { min-height: 40vh; }

/* ============================================================
   Section Titles
   ============================================================ */
.section-title {
    font-size: 1.75rem;
    color: var(--dark-blue);
    position: relative;
    padding-bottom: 0.75rem;
    margin-bottom: 0.5rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--primary);
    border-radius: 2px;
}

.section-subtitle {
    color: var(--text-muted);
    font-size: 1rem;
}

/* ============================================================
   Article Cards
   ============================================================ */
.article-card {
    background: white;
    border-radius: 0;
    box-shadow: var(--card-shadow);
    overflow: hidden;
    transition: box-shadow var(--transition), transform var(--transition);
    display: flex;
    flex-direction: column;
}

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

.article-card-img-link {
    display: block;
    overflow: hidden;
}

.article-card-img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    transition: transform 0.4s ease;
}

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

.article-card-img-placeholder {
    width: 100%;
    height: 220px;
    background: linear-gradient(135deg, var(--dark-blue) 0%, var(--dark-blue-light) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.3);
    font-size: 3rem;
}

.article-card-body {
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.article-card-category {
    display: inline-block;
    background: var(--primary);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.6rem;
    text-decoration: none;
    transition: background var(--transition);
}
.article-card-category:hover { background: var(--primary-dark); color: white; }

.article-card-title {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 0.6rem;
    line-height: 1.4;
}

.article-card-title a {
    color: var(--dark-blue);
    text-decoration: none;
}
.article-card-title a:hover { color: var(--primary); }

.article-card-excerpt {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.6;
    flex: 1;
}

.article-card-footer {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border-color);
    font-size: 0.8rem;
    color: var(--text-muted);
}

.article-card-date,
.article-card-reading-time {
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.article-card-read-more {
    margin-left: auto;
    color: var(--primary);
    font-weight: 600;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.3rem;
}
.article-card-read-more:hover { color: var(--primary-dark); }

/* ============================================================
   Category Cards
   ============================================================ */
.category-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1.5rem 1rem;
    transition: all var(--transition);
    text-decoration: none;
}

.category-card:hover {
    background: var(--dark-blue);
    border-color: var(--dark-blue);
    transform: translateY(-3px);
    box-shadow: var(--card-hover-shadow);
}

.category-card-icon {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 0.75rem;
    transition: color var(--transition);
}
.category-card:hover .category-card-icon { color: var(--secondary); }

.category-card-name {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--dark-blue);
    margin-bottom: 0.25rem;
    transition: color var(--transition);
}
.category-card:hover .category-card-name { color: white; }

.category-card-count {
    font-size: 0.75rem;
    color: var(--text-muted);
    transition: color var(--transition);
}
.category-card:hover .category-card-count { color: rgba(255,255,255,0.7); }

/* ============================================================
   Info Banner
   ============================================================ */
.info-banner-item {
    padding: 2rem 1rem;
}

.info-banner-icon {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

.info-banner-title {
    font-size: 1.25rem;
    color: var(--dark-blue);
    margin-bottom: 0.5rem;
}

.info-banner-text {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* ============================================================
   Single Article
   ============================================================ */
.article-header { margin-bottom: 1.5rem; }

.article-title {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    color: var(--dark-blue);
    margin-top: 0.75rem;
    margin-bottom: 1rem;
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.article-meta-item {
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.article-featured-image img {
    width: 100%;
    max-height: 500px;
    object-fit: cover;
}

/* Article content styling */
.article-content {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--dark-blue);
}

.article-content h2,
.article-content h3,
.article-content h4 {
    color: var(--dark-blue);
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.article-content p { margin-bottom: 1.25rem; }

.article-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 1rem 0;
}

.article-content ul,
.article-content ol {
    padding-left: 1.5rem;
    margin-bottom: 1.25rem;
}

.article-content li { margin-bottom: 0.4rem; }

.article-content blockquote {
    border-left: 4px solid var(--primary);
    padding: 1rem 1.5rem;
    margin: 1.5rem 0;
    background: var(--light-bg);
    border-radius: 0 8px 8px 0;
    font-style: italic;
    color: var(--text-muted);
}

.article-content a {
    color: var(--primary);
    text-decoration: underline;
}
.article-content a:hover { color: var(--primary-dark); }

/* ============================================================
   Tags
   ============================================================ */
.tag-badge {
    display: inline-block;
    background: var(--light-bg);
    color: var(--dark-blue);
    font-size: 0.8rem;
    font-weight: 500;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    margin: 0.15rem;
    text-decoration: none;
    transition: all var(--transition);
}
.tag-badge:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* ============================================================
   Share buttons
   ============================================================ */
.btn-facebook {
    background: #1877f2;
    color: white;
    border: none;
}
.btn-facebook:hover { background: #1465d8; color: white; }

.btn-twitter {
    background: #000;
    color: white;
    border: none;
}
.btn-twitter:hover { background: #333; color: white; }

.btn-whatsapp {
    background: #25d366;
    color: white;
    border: none;
}
.btn-whatsapp:hover { background: #1ebe5a; color: white; }

/* ============================================================
   Article Disclaimer
   ============================================================ */
.article-disclaimer {
    background: #fff3cd;
    border: 1px solid #ffc107;
    color: #856404;
    font-size: 0.875rem;
}

/* ============================================================
   Sidebar
   ============================================================ */
.sidebar { }

.widget {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.widget-title {
    font-size: 1.1rem;
    color: var(--dark-blue);
    font-weight: 700;
    margin-bottom: 1rem;
    padding-bottom: 0.6rem;
    border-bottom: 2px solid var(--primary);
}

.widget-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.widget-list-item {
    display: flex;
    gap: 0.75rem;
    align-items: flex-start;
    padding: 0.6rem 0;
    border-bottom: 1px solid var(--border-color);
}
.widget-list-item:last-child { border-bottom: none; }

.widget-thumb {
    width: 60px;
    height: 60px;
    object-fit: cover;
    border-radius: 6px;
    flex-shrink: 0;
}

.widget-list-info { flex: 1; min-width: 0; }

.widget-list-title {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--dark-blue);
    text-decoration: none;
    line-height: 1.4;
    margin-bottom: 0.2rem;
}
.widget-list-title:hover { color: var(--primary); }

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

.widget-category-link {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.4rem 0;
    font-size: 0.9rem;
    color: var(--dark-blue);
    text-decoration: none;
    border-bottom: 1px solid var(--border-color);
}
.widget-category-link:last-child { border-bottom: none; }
.widget-category-link:hover { color: var(--primary); }

.widget-badge {
    background: var(--primary) !important;
    color: white !important;
    font-size: 0.7rem;
}

.widget-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

/* ============================================================
   Footer
   ============================================================ */
.site-footer {
    background: var(--dark-blue);
    color: rgba(255,255,255,0.8);
    margin-top: 3rem;
}

.footer-site-name {
    font-size: 1.4rem;
    color: var(--primary);
    font-weight: 800;
    margin-bottom: 0.75rem;
}

.footer-description {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.7);
    line-height: 1.6;
}

.footer-sponsor {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
}
.sponsor-label {
    font-size: 0.75rem;
    color: rgba(255,255,255,0.5);
    text-transform: uppercase;
    letter-spacing: 1px;
}
.sponsor-name {
    color: var(--secondary);
    font-size: 0.95rem;
}

.footer-heading {
    font-size: 1rem;
    color: white;
    font-weight: 700;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--primary);
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}
.footer-links li {
    margin-bottom: 0.5rem;
}
.footer-links a {
    color: rgba(255,255,255,0.7);
    font-size: 0.9rem;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    transition: color var(--transition);
}
.footer-links a:hover { color: var(--primary); }

.footer-bottom {
    background: rgba(0,0,0,0.3);
    border-top: 1px solid rgba(255,255,255,0.1);
}

.footer-copyright {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.6);
}

.footer-legal-link {
    font-size: 0.75rem;
    color: rgba(255,255,255,0.5);
    text-decoration: none;
    transition: color var(--transition);
    white-space: nowrap;
}
.footer-legal-link:hover { color: var(--primary); }

/* ============================================================
   Pagination
   ============================================================ */
.pagination .page-link {
    color: var(--dark-blue);
    border-color: var(--border-color);
    border-radius: 6px !important;
    margin: 0 2px;
    transition: all var(--transition);
}
.pagination .page-link:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}
.pagination .page-item.active .page-link {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}
.pagination .page-item.disabled .page-link {
    color: var(--text-muted);
}

/* ============================================================
   Error Page
   ============================================================ */
.error-code {
    font-size: 8rem;
    font-weight: 900;
    color: var(--primary);
    line-height: 1;
    opacity: 0.3;
}
.error-title {
    font-size: 2.5rem;
    color: var(--dark-blue);
}
.error-description {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 500px;
    margin: 0 auto;
}

/* ============================================================
   Back to Top
   ============================================================ */
.btn-back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--dark-blue);
    color: white;
    border: none;
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 999;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    transition: all var(--transition);
    padding: 0;
}
.btn-back-to-top:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-3px);
}
.btn-back-to-top.show { display: flex; }

/* ============================================================
   Archive / Category / Tag headers
   ============================================================ */
.archive-title,
.category-title,
.tag-title,
.search-title {
    font-size: 2rem;
    color: var(--dark-blue);
    margin-bottom: 0.5rem;
}

/* ============================================================
   Static Pages
   ============================================================ */
.static-page {
    margin: 0 auto;
}

.page-title {
    display: inline-block;
    font-size: 2rem;
    color: var(--dark-blue);
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 3px solid var(--primary);
}

.page-content {
    font-size: 1.2rem;
    line-height: 1.8;
    color: var(--dark-blue);
}

.page-content h2, .page-content h3 {
    color: var(--dark-blue);
    margin-top: 2rem;
}

/* ============================================================
   Bootstrap overrides
   ============================================================ */
.btn-primary {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
    font-weight: 600;
}
.btn-primary:hover, .btn-primary:focus {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    color: white;
}

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

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 768px) {
    .hero-section { padding: 50px 0; }
    .hero-title { font-size: 1.8rem; }
    .hero-subtitle { font-size: 1rem; }
    .article-title { font-size: 1.5rem; }
    .site-logo-text { font-size: 1.1rem; }
    .footer-bottom .d-flex { flex-direction: column; }
    .footer-legal-links { justify-content: flex-start !important; }
    .btn-back-to-top { bottom: 1rem; right: 1rem; }
}

@media (max-width: 576px) {
    .article-card-footer { gap: 0.5rem; }
    .article-card-read-more { display: none; }
}