/* ============================================
   KAMISETEMBANG ALUMNI CMS — DESIGN SYSTEM
   Harvard-inspired layout with blue palette
   ============================================ */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;500;600;700;800&family=Inter:wght@300;400;500;600;700&display=swap');

/* ---- CSS Custom Properties ---- */
:root {
    /* Primary Blue Palette */
    --primary-950: #0A1E3A;
    --primary-900: #0F2A4A;
    --primary-800: #14345A;
    --primary-700: #1A4478;
    --primary-600: #1E5494;
    --primary-500: #2563EB;
    --primary-400: #60A5FA;
    --primary-300: #93C5FD;
    --primary-200: #BFDBFE;
    --primary-100: #DBEAFE;
    --primary-50:  #EFF6FF;

    /* Accent Yellow */
    --accent-500: #F59E0B;
    --accent-400: #FBBF24;
    --accent-600: #D97706;

    /* Accent Red */
    --red-900: #7F1D1D;
    --red-800: #991B1B;
    --red-700: #B91C1C;
    --red-600: #DC2626;
    --red-500: #EF4444;
    --red-400: #F87171;
    --red-300: #FCA5A5;
    --red-light: #F87171;


    /* Surface & Text */
    --surface: #FFFFFF;
    --surface-alt: #F8FAFC;
    --surface-hover: #F1F5F9;
    --border: #E2E8F0;
    --border-light: #F1F5F9;
    --text: #1E293B;
    --text-muted: #64748B;
    --text-light: #94A3B8;
    --text-inverse: #FFFFFF;

    /* Status Colors */
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
    --info: #3B82F6;

    /* Typography */
    --font-heading: 'Playfair Display', Georgia, 'Times New Roman', serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;

    /* Sizes */
    --container-max: 1280px;
    --container-narrow: 960px;
    --header-height: 72px;
    --topbar-height: 40px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.1);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
}

/* ---- Reset & Base ---- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text);
    background-color: var(--surface);
}

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

a {
    color: var(--primary-600);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-500);
}

/* ---- Typography ---- */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--primary-900);
    line-height: 1.25;
    font-weight: 700;
}

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

.section-title {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-900);
    margin-bottom: var(--space-lg);
    position: relative;
    padding-bottom: var(--space-sm);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-500), var(--red-500), var(--accent-500));
    border-radius: var(--radius-full);
}

.section-title.text-center::after {
    left: 50%;
    transform: translateX(-50%);
}

/* ---- Container ---- */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

.container-narrow {
    max-width: var(--container-narrow);
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

/* ---- Top Bar (Harvard-style utility bar) ---- */
.topbar {
    background: var(--primary-600);
    height: var(--topbar-height);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    font-size: 0.8125rem;
    letter-spacing: 0.025em;
}

.topbar .container {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: var(--space-md);
    width: 100%;
}

.topbar a {
    color: var(--primary-200);
    font-weight: 500;
    transition: color var(--transition-fast);
    padding: var(--space-xs) var(--space-sm);
}

.topbar a:hover {
    color: var(--text-inverse);
}

.topbar .topbar-divider {
    width: 1px;
    height: 16px;
    background: var(--primary-200);
}

/* ---- Header / Navigation ---- */
.site-header {
    background: var(--surface);
    height: var(--header-height);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.site-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    text-decoration: none;
}

.site-logo .logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-700), var(--primary-500));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.25rem;
}

.site-logo .logo-text {
    font-family: var(--font-heading);
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--red-800);
    letter-spacing: -0.01em;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 0;
    list-style: none;
}

.main-nav li a {
    display: flex;
    align-items: center;
    padding: var(--space-sm) var(--space-md);
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 3px solid transparent;
    height: var(--header-height);
    transition: all var(--transition-fast);
}

.main-nav li a:hover,
.main-nav li a.active {
    color: var(--primary-600);
    border-bottom-color: var(--primary-500);
    background: var(--primary-50);
}

/* ---- Nav Dropdown ---- */
.nav-dropdown {
    position: relative;
}

.nav-dropdown-toggle {
    display: flex !important;
    align-items: center;
    gap: 5px;
    cursor: pointer;
    user-select: none;
}

.nav-dropdown-caret {
    flex-shrink: 0;
    transition: transform var(--transition-fast);
    opacity: 0.6;
}

.nav-dropdown.open .nav-dropdown-caret,
.nav-dropdown:hover .nav-dropdown-caret {
    transform: rotate(180deg);
    opacity: 1;
}

.nav-dropdown-menu {
    position: absolute;
    top: calc(100% + 2px);
    left: 0;
    min-width: 220px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: var(--space-xs) 0;
    list-style: none;
    z-index: 200;
    /* hidden by default */
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
    pointer-events: none;
}

/* Show on hover (desktop) */
.nav-dropdown:hover .nav-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
}

/* Show on click via .open class (mobile / keyboard) */
.nav-dropdown.open .nav-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
}

.nav-dropdown-menu li a {
    display: flex !important;
    align-items: center;
    gap: var(--space-sm);
    padding: 0.625rem var(--space-lg) !important;
    font-size: 0.9rem !important;
    font-weight: 500 !important;
    color: var(--text) !important;
    text-transform: none !important;
    letter-spacing: 0 !important;
    border-bottom: none !important;
    height: auto !important;
    transition: background var(--transition-fast), color var(--transition-fast) !important;
    white-space: nowrap;
}

.nav-dropdown-menu li a svg {
    flex-shrink: 0;
    color: var(--primary-400);
    transition: color var(--transition-fast);
}

.nav-dropdown-menu li a:hover,
.nav-dropdown-menu li a.active {
    background: var(--primary-50) !important;
    color: var(--primary-700) !important;
    border-bottom: none !important;
}

.nav-dropdown-menu li a:hover svg,
.nav-dropdown-menu li a.active svg {
    color: var(--primary-600);
}

.nav-dropdown-menu li a.active {
    font-weight: 600 !important;
}

/* Separator line above dropdown menu */
.nav-dropdown-menu::before {
    content: '';
    position: absolute;
    top: -6px;
    left: 20px;
    width: 10px;
    height: 10px;
    background: var(--surface);
    border-top: 1px solid var(--border);
    border-left: 1px solid var(--border);
    transform: rotate(45deg);
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-sm);
    color: var(--primary-700);
}

.nav-toggle svg {
    width: 28px;
    height: 28px;
}

/* ---- Hero Section ---- */
.hero {
    position: relative;
    min-height: 520px;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-400));
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    z-index: 0;
}

.hero .container {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
    padding-top: var(--space-3xl);
    padding-bottom: var(--space-3xl);
}

.hero-content h1 {
    font-size: 3rem;
    color: var(--text-inverse);
    margin-bottom: var(--space-lg);
    line-height: 1.15;
}

.hero-content p {
    font-size: 1.125rem;
    color: var(--primary-200);
    margin-bottom: var(--space-xl);
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.hero-image {
    position: relative;
}

.hero-image img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    width: 100%;
    height: 400px;
    object-fit: cover;
}

.hero-image::after {
    content: '';
    position: absolute;
    bottom: -12px;
    right: -12px;
    width: 100%;
    height: 100%;
    border: 3px solid var(--accent-500);
    border-radius: var(--radius-lg);
    z-index: -1;
    opacity: 0.5;
}

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 0.75rem 1.75rem;
    font-family: var(--font-body);
    font-size: 0.9375rem;
    font-weight: 600;
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    line-height: 1.4;
}

.btn-primary {
    background: var(--primary-500);
    color: var(--text-inverse);
    border-color: var(--primary-500);
}

.btn-primary:hover {
    background: var(--primary-600);
    border-color: var(--primary-600);
    color: var(--text-inverse);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-accent {
    background: var(--accent-500);
    color: var(--primary-950);
    border-color: var(--accent-500);
    font-weight: 700;
}

.btn-accent:hover {
    background: var(--accent-400);
    border-color: var(--accent-400);
    color: var(--primary-950);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-red {
    background: var(--red-600);
    color: var(--text-inverse);
    border-color: var(--red-600);
    font-weight: 700;
}

.btn-red:hover {
    background: var(--red-700);
    border-color: var(--red-700);
    color: var(--text-inverse);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background: transparent;
    color: var(--text-inverse);
    border-color: var(--primary-300);
}

.btn-outline:hover {
    background: rgba(255,255,255,0.1);
    border-color: var(--text-inverse);
    color: var(--text-inverse);
}

.btn-outline-dark {
    background: transparent;
    color: var(--primary-700);
    border-color: var(--primary-300);
}

.btn-outline-dark:hover {
    background: var(--primary-50);
    border-color: var(--primary-500);
    color: var(--primary-600);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.8125rem;
}

.btn-lg {
    padding: 0.875rem 2rem;
    font-size: 1rem;
}

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

.btn-danger:hover {
    background: #DC2626;
    border-color: #DC2626;
    color: white;
}

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

.btn-success:hover {
    background: #059669;
    border-color: #059669;
    color: white;
}

/* ---- Cards ---- */
.card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border);
    transition: all var(--transition-base);
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
    border-color: var(--primary-200);
}

.card-image {
    width: 100%;
    height: 220px;
    object-fit: cover;
    background: linear-gradient(135deg, var(--primary-100), var(--primary-200));
}

.card-body {
    padding: var(--space-lg);
}

.card-meta {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-bottom: var(--space-sm);
}

.card-meta .meta-dot {
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--text-light);
}

.card-title {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-900);
    margin-bottom: var(--space-sm);
    line-height: 1.35;
}

.card-title a {
    color: inherit;
}

.card-title a:hover {
    color: var(--primary-600);
}

.card-text {
    font-size: 0.9375rem;
    color: var(--text-muted);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Featured card (larger) */
.card-featured {
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.card-featured .card-image {
    height: 100%;
    min-height: 320px;
}

.card-featured .card-body {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: var(--space-2xl);
}

.card-featured .card-title {
    font-size: 1.75rem;
}

.card-featured .card-text {
    -webkit-line-clamp: 4;
}

/* ---- Event Card (date-block style like Harvard) ---- */
.event-card {
    display: flex;
    gap: var(--space-lg);
    padding: var(--space-lg);
    border-bottom: 1px solid var(--border);
    transition: background var(--transition-fast);
}

.event-card:hover {
    background: var(--primary-50);
}

.event-date-block {
    flex-shrink: 0;
    width: 72px;
    text-align: center;
    padding: var(--space-sm);
    background: var(--primary-50);
    border-radius: var(--radius-md);
    border: 1px solid var(--primary-100);
}

.event-date-block .month {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--primary-600);
}

.event-date-block .day {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--primary-900);
    line-height: 1;
    font-family: var(--font-heading);
}

.event-info h3 {
    font-size: 1.125rem;
    margin-bottom: var(--space-xs);
}

.event-info h3 a {
    color: var(--primary-900);
}

.event-info h3 a:hover {
    color: var(--primary-600);
}

.event-location {
    font-size: 0.875rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.event-location svg {
    width: 14px;
    height: 14px;
    color: var(--primary-400);
}

/* ---- Section Styles ---- */
.section {
    padding: var(--space-3xl) 0;
}

.section-alt {
    background: var(--primary-50);
}

.section-dark {
    background: var(--primary-900);
    color: var(--text-inverse);
}

.section-dark .section-title {
    color: var(--text-inverse);
}

/* ---- Feature Block (50/50 split like Harvard) ---- */
.feature-block {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    min-height: 400px;
}

.feature-block.reversed {
    direction: rtl;
}

.feature-block.reversed > * {
    direction: ltr;
}

.feature-image {
    overflow: hidden;
}

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

.feature-block:hover .feature-image img {
    transform: scale(1.03);
}

.feature-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: var(--space-3xl);
}

.feature-content h2 {
    font-size: 2rem;
    margin-bottom: var(--space-md);
}

.feature-content p {
    font-size: 1.0625rem;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: var(--space-xl);
}

/* ---- Grid Layouts ---- */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-xl);
}

/* ---- Gallery Grid ---- */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-lg);
}

.gallery-item {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    aspect-ratio: 4/3;
    cursor: pointer;
}

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

.gallery-item:hover img {
    transform: scale(1.05);
}

.gallery-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(15,42,74,0.8) 0%, transparent 60%);
    display: flex;
    align-items: flex-end;
    padding: var(--space-lg);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

.gallery-overlay h3 {
    color: var(--text-inverse);
    font-size: 1.125rem;
}

/* ---- Badges ---- */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-primary {
    background: var(--primary-100);
    color: var(--primary-700);
}

.badge-success {
    background: #D1FAE5;
    color: #065F46;
}

.badge-warning {
    background: #FEF3C7;
    color: #92400E;
}

.badge-danger {
    background: #FEE2E2;
    color: #991B1B;
}

/* ---- Forms ---- */
.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: var(--space-xs);
}

.form-control {
    width: 100%;
    padding: 0.625rem 0.875rem;
    font-family: var(--font-body);
    font-size: 0.9375rem;
    color: var(--text);
    background: var(--surface);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    outline: none;
}

.form-control:focus {
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(37,99,235,0.15);
}

.form-control::placeholder {
    color: var(--text-light);
}

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

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748B' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2.5rem;
}

.form-error {
    font-size: 0.8125rem;
    color: var(--danger);
    margin-top: var(--space-xs);
}

/* ---- Tables ---- */
.table-container {
    overflow-x: auto;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th {
    background: var(--primary-50);
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--primary-700);
    padding: var(--space-md) var(--space-lg);
    text-align: left;
    border-bottom: 2px solid var(--primary-100);
}

.data-table td {
    padding: var(--space-md) var(--space-lg);
    border-bottom: 1px solid var(--border-light);
    font-size: 0.9375rem;
    vertical-align: middle;
}

.data-table tr:hover td {
    background: var(--surface-hover);
}

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

/* ---- Footer ---- */
.site-footer {
    background: var(--primary-700);
    color: var(--primary-200);
    padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
}

.footer-brand .logo-text {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-inverse);
    margin-bottom: var(--space-md);
}

.footer-brand p {
    font-size: 0.9375rem;
    color: var(--primary-300);
    line-height: 1.6;
    margin-bottom: var(--space-lg);
}

.footer-social {
    display: flex;
    gap: var(--space-sm);
}

.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: rgba(255,255,255,0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-300);
    transition: all var(--transition-fast);
}

.footer-social a:hover {
    background: var(--primary-500);
    color: var(--text-inverse);
    transform: translateY(-2px);
}

.footer-column h4 {
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-inverse);
    margin-bottom: var(--space-lg);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--space-sm);
}

.footer-links a {
    font-size: 0.9375rem;
    color: var(--primary-300);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--accent-400);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: var(--space-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8125rem;
    color: var(--text-light);
}

/* ---- CTA Banner Section (like Harvard's feature blocks) ---- */
.cta-banner {
    /* background: linear-gradient(135deg, var(--primary-700), var(--primary-500)); */
    background: linear-gradient(175deg, var(--red-400), var(--accent-400));
    padding: var(--space-3xl) 0;
    text-align: center;
}

.cta-banner h2 {
    color: var(--text-inverse);
    font-size: 2.25rem;
    margin-bottom: var(--space-md);
}

.cta-banner p {
    color: var(--primary-800);
    font-size: 1.125rem;
    margin-bottom: var(--space-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ---- Pagination ---- */
.pagination-wrapper {
    display: flex;
    justify-content: center;
    margin-top: var(--space-2xl);
}

.pagination-wrapper nav span,
.pagination-wrapper nav a {
    padding: 0.5rem 0.875rem;
    margin: 0 2px;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    border: 1px solid var(--border);
    color: var(--text);
    transition: all var(--transition-fast);
}

.pagination-wrapper nav span[aria-current] {
    background: var(--primary-500);
    color: white;
    border-color: var(--primary-500);
}

.pagination-wrapper nav a:hover {
    background: var(--primary-50);
    border-color: var(--primary-300);
}

/* ---- Admin Layout ---- */
.admin-wrapper {
    display: flex;
    min-height: 100vh;
}

.admin-sidebar {
    width: 260px;
    background: var(--primary-950);
    color: var(--primary-200);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 50;
    overflow-y: auto;
}

.admin-sidebar-brand {
    padding: var(--space-lg) var(--space-xl);
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.admin-sidebar-brand a {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-inverse);
}

.admin-nav {
    flex: 1;
    padding: var(--space-md) 0;
}

.admin-nav-section {
    padding: var(--space-sm) var(--space-xl);
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--primary-400);
    margin-top: var(--space-md);
}

.admin-nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 0.625rem var(--space-xl);
    font-size: 0.9375rem;
    color: var(--primary-300);
    transition: all var(--transition-fast);
    border-left: 3px solid transparent;
}

.admin-nav-link:hover {
    background: rgba(255,255,255,0.05);
    color: var(--text-inverse);
}

.admin-nav-link.active {
    background: rgba(37,99,235,0.15);
    color: var(--primary-300);
    border-left-color: var(--primary-400);
}

.admin-nav-link svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.admin-content {
    flex: 1;
    margin-left: 260px;
}

.admin-topbar {
    background: var(--surface);
    height: 64px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-xl);
    position: sticky;
    top: 0;
    z-index: 40;
}

.admin-topbar h1 {
    font-family: var(--font-body);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text);
}

.admin-body {
    padding: var(--space-xl);
    background: var(--surface-alt);
    min-height: calc(100vh - 64px);
}

/* ---- Stats Cards (Admin Dashboard) ---- */
.stat-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-icon svg {
    width: 28px;
    height: 28px;
}

.stat-icon.blue { background: var(--primary-100); color: var(--primary-600); }
.stat-icon.green { background: #D1FAE5; color: #059669; }
.stat-icon.amber { background: #FEF3C7; color: #D97706; }
.stat-icon.rose { background: #FFE4E6; color: #E11D48; }

.stat-content h3 {
    font-family: var(--font-body);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text);
    line-height: 1;
    margin-bottom: var(--space-xs);
}

.stat-content p {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* ---- Alert Messages ---- */
.alert {
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
    font-size: 0.9375rem;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.alert-success { background: #D1FAE5; color: #065F46; border: 1px solid #A7F3D0; }
.alert-danger { background: #FEE2E2; color: #991B1B; border: 1px solid #FECACA; }
.alert-warning { background: #FEF3C7; color: #92400E; border: 1px solid #FDE68A; }
.alert-info { background: var(--primary-100); color: var(--primary-800); border: 1px solid var(--primary-200); }

/* ---- Loading States ---- */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border);
    border-top-color: var(--primary-500);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ---- Page Header ---- */
.page-header {
    background: linear-gradient(135deg, var(--primary-900), var(--primary-700));
    padding: var(--space-3xl) 0;
    text-align: center;
}

.page-header h1 {
    color: var(--text-inverse);
    font-size: 2.5rem;
    margin-bottom: var(--space-sm);
}

.page-header p {
    color: var(--primary-200);
    font-size: 1.125rem;
}

.breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
    font-size: 0.875rem;
}

.breadcrumb a {
    color: var(--primary-300);
}

.breadcrumb a:hover {
    color: var(--text-inverse);
}

.breadcrumb .separator {
    color: var(--primary-400);
}

.breadcrumb .current {
    color: var(--accent-400);
}

/* ---- Content Article ---- */
.article-content {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--text);
}

.article-content p {
    margin-bottom: var(--space-lg);
}

.article-content h2 {
    margin-top: var(--space-2xl);
    margin-bottom: var(--space-md);
}

.article-content img {
    border-radius: var(--radius-lg);
    margin: var(--space-xl) 0;
}

/* ---- User dropdown ---- */
.user-dropdown {
    position: relative;
}

.user-dropdown-toggle {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    cursor: pointer;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}

.user-dropdown-toggle:hover {
    background: var(--surface-hover);
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--primary-500), var(--primary-700));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
}

.user-dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    min-width: 200px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: var(--space-sm) 0;
    z-index: 200;
    display: none;
}

.user-dropdown-menu.show {
    display: block;
}

.user-dropdown-menu a {
    display: block;
    padding: var(--space-sm) var(--space-lg);
    font-size: 0.9375rem;
    color: var(--text);
    transition: background var(--transition-fast);
}

.user-dropdown-menu a:hover {
    background: var(--primary-50);
    color: var(--primary-600);
}

/* ---- Search ---- */
.search-bar {
    position: relative;
    max-width: 400px;
}

.search-bar input {
    width: 100%;
    padding: 0.625rem 1rem 0.625rem 2.75rem;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-full);
    font-size: 0.9375rem;
    background: var(--surface);
    transition: all var(--transition-fast);
}

.search-bar input:focus {
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
    outline: none;
}

.search-bar svg {
    position: absolute;
    left: 0.875rem;
    top: 50%;
    transform: translateY(-50%);
    width: 18px;
    height: 18px;
    color: var(--text-muted);
}

/* ---- Photo placeholder (when no image) ---- */
.image-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-100), var(--primary-200));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-400);
}

.image-placeholder svg {
    width: 48px;
    height: 48px;
}

/* ---- Preambule Section ---- */
.preambule-section {
    background: var(--surface);
}

.preambule-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.preambule-img-col {
    position: relative;
}

.preambule-img-frame {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    aspect-ratio: 4 / 3;
}

.preambule-img-frame::after {
    content: '';
    position: absolute;
    bottom: -10px;
    right: -10px;
    width: 100%;
    height: 100%;
    border: 3px solid var(--primary-300);
    border-radius: var(--radius-xl);
    z-index: -1;
    opacity: 0.6;
}

.preambule-img-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform var(--transition-slow);
}

.preambule-img-frame:hover img {
    transform: scale(1.03);
}

.preambule-text-col {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.preambule-text-full {
    grid-column: 1 / -1;
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.preambule-eyebrow {
    font-size: 0.8125rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--primary-500);
    margin-bottom: var(--space-sm);
}

.preambule-title {
    font-family: var(--font-heading);
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--primary-900);
    line-height: 1.2;
    margin-bottom: var(--space-md);
}

.preambule-divider {
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-500), var(--red-500), var(--accent-500));
    border-radius: var(--radius-full);
    margin-bottom: var(--space-lg);
}

.preambule-body {
    font-size: 1.0625rem;
    line-height: 1.85;
    color: var(--text-muted);
}

.preambule-body p {
    margin-bottom: var(--space-md);
}

.preambule-body p:last-child {
    margin-bottom: 0;
}

/* ---- Admin Preambule Cards ---- */
.preambule-admin-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--space-xl);
}

.preambule-admin-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    overflow: hidden;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
    position: relative;
}

.preambule-admin-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-3px);
    border-color: var(--primary-200);
}

.preambule-admin-card.is-active {
    border-color: var(--success);
    box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.15), var(--shadow-md);
}

.preambule-admin-card-thumb {
    width: 100%;
    height: 180px;
    background: linear-gradient(135deg, var(--primary-100), var(--primary-200));
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

.preambule-admin-card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.preambule-admin-card-thumb .no-img-label {
    color: var(--primary-400);
    font-size: 0.875rem;
    font-weight: 500;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
}

.preambule-admin-card-thumb .no-img-label svg {
    width: 36px;
    height: 36px;
    opacity: 0.6;
}

.preambule-active-badge {
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
    background: var(--success);
    color: white;
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 0.2rem 0.6rem;
    border-radius: var(--radius-full);
}

.preambule-inactive-badge {
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
    background: rgba(0,0,0,0.5);
    color: rgba(255,255,255,0.8);
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 0.2rem 0.6rem;
    border-radius: var(--radius-full);
}

.preambule-admin-card-body {
    padding: var(--space-lg);
}

.preambule-admin-card-title {
    font-family: var(--font-heading);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--primary-900);
    margin-bottom: var(--space-xs);
    line-height: 1.3;
}

.preambule-admin-card-excerpt {
    font-size: 0.875rem;
    color: var(--text-muted);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: var(--space-md);
}

.preambule-admin-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-sm) var(--space-lg);
    border-top: 1px solid var(--border-light);
    background: var(--surface-alt);
    gap: var(--space-sm);
}

/* ---- Admin Image Upload Zone ---- */
.img-upload-zone {
    border: 2px dashed var(--border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    text-align: center;
    transition: all var(--transition-fast);
    background: var(--surface-alt);
    cursor: pointer;
}

.img-upload-zone:hover {
    border-color: var(--primary-400);
    background: var(--primary-50);
}

.img-upload-zone p {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: var(--space-sm);
    margin-bottom: 0;
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
    .feature-block { grid-template-columns: 1fr; }
    .card-featured { grid-template-columns: 1fr; }
    .card-featured .card-image { min-height: 220px; }
    .hero .container { grid-template-columns: 1fr; }
    .hero-image { display: none; }
    h1 { font-size: 2rem; }
    .hero-content h1 { font-size: 2.5rem; }
    .preambule-wrapper { grid-template-columns: 1fr; gap: var(--space-2xl); }
    .preambule-title { font-size: 1.875rem; }
}

@media (max-width: 768px) {
    :root {
        --header-height: 60px;
    }

    .main-nav {
        display: none;
        position: fixed;
        top: calc(var(--topbar-height) + var(--header-height));
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--surface);
        flex-direction: column;
        padding: var(--space-lg);
        z-index: 99;
        overflow-y: auto;
    }

    .main-nav.open {
        display: flex;
    }

    .main-nav li a {
        height: auto;
        border-bottom: 1px solid var(--border-light);
        padding: var(--space-md);
        font-size: 1rem;
    }

    /* Mobile dropdown becomes inline accordion */
    .nav-dropdown {
        position: static;
    }

    .nav-dropdown-menu {
        position: static;
        opacity: 1;
        visibility: hidden;
        transform: none;
        box-shadow: none;
        border: none;
        border-radius: 0;
        background: var(--primary-50);
        padding: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition-base), visibility var(--transition-base);
        pointer-events: none;
    }

    .nav-dropdown.open .nav-dropdown-menu {
        max-height: 300px;
        visibility: visible;
        pointer-events: auto;
        border-left: 3px solid var(--primary-300);
        margin-left: var(--space-md);
    }

    .nav-dropdown-menu::before {
        display: none;
    }

    .nav-dropdown-menu li a {
        border-bottom: 1px solid var(--border-light) !important;
        padding: 0.75rem var(--space-lg) !important;
        font-size: 0.9375rem !important;
        background: transparent;
    }

    .nav-toggle {
        display: block;
    }

    .grid-2 { grid-template-columns: 1fr; }
    .grid-3 { grid-template-columns: 1fr; }
    .grid-4 { grid-template-columns: 1fr; }

    .hero { min-height: 400px; }
    .hero-content h1 { font-size: 2rem; }

    .section { padding: var(--space-2xl) 0; }

    .footer-grid { grid-template-columns: 1fr; }

    .admin-sidebar { 
        transform: translateX(-100%);
        transition: transform var(--transition-base);
    }
    .admin-sidebar.open { transform: translateX(0); }
    .admin-content { margin-left: 0; }
}

/* ---- Utility Classes ---- */
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-1 { margin-top: var(--space-md); }
.mt-2 { margin-top: var(--space-xl); }
.mt-3 { margin-top: var(--space-2xl); }
.mb-1 { margin-top: var(--space-md); }
.mb-2 { margin-top: var(--space-xl); }
.mb-3 { margin-top: var(--space-2xl); }
.flex { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-1 { gap: var(--space-md); }
.gap-2 { gap: var(--space-xl); }
.flex-wrap { flex-wrap: wrap; }
.w-full { width: 100%; }
.hidden { display: none; }