/* 
  =========================================
  CSS DESIGN SYSTEM & STYLING
  NUoL Department of Civil Engineering Website
  =========================================
*/

/* --- CSS Variables & Design Tokens --- */
:root {
    /* Color Palette */
    --color-primary: #0A192F;       /* Deep Navy Blue */
    --color-primary-light: #112240; /* Medium Navy Blue */
    --color-primary-lighter: #233554; /* Slate Navy Blue */
    --color-accent: #E5B842;        /* Elegant Gold */
    --color-accent-hover: #F0C24D;  /* Lighter Accent Gold */
    
    --color-text-dark: #0F172A;     /* Soft Black */
    --color-text-muted: #475569;    /* Dark Muted Grey */
    --color-text-light: #F8FAFC;    /* Pure Soft White */
    --color-text-light-muted: #CBD5E1; /* Muted Light Slate */
    
    --color-bg-light: #F8FAFC;      /* Background Light Grey */
    --color-bg-white: #FFFFFF;      /* Clean White */
    --color-border-light: #E2E8F0;  /* Slate Border */
    --color-border-accent: rgba(229, 184, 66, 0.3); /* Subtle Gold Border */
    
    /* Typography */
    --font-sans: 'Google Sans', 'Noto Sans Lao', 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    
    /* Layout & Shadows */
    --max-width: 1280px;
    --header-height: 80px;
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 10px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.12);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    background-color: var(--color-bg-light);
    color: var(--color-text-dark);
    line-height: 1.6;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

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

ul {
    list-style: none;
}

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

/* --- Loader & Transitions --- */
.progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 4px;
    background-color: var(--color-accent);
    z-index: 9999;
    width: 0;
    transition: width var(--transition-fast);
}

.view-loader {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 400px;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(10, 25, 47, 0.1);
    border-top: 4px solid var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* --- Navbar / Header Styling --- */
.navbar-header {
    background-color: rgba(10, 25, 47, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-primary-lighter);
    position: sticky;
    top: 0;
    z-index: 1000;
    height: var(--header-height);
    display: flex;
    align-items: center;
    transition: background-color var(--transition-smooth);
}

.navbar-header.scrolled {
    background-color: rgba(6, 15, 30, 0.98);
    box-shadow: var(--shadow-md);
}

.nav-container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Brand Logo */
.logo-area {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-img-wrapper {
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-bg-white);
    border-radius: 50%;
    padding: 2px;
    overflow: hidden;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    flex-shrink: 0;
}

.brand-logo-img {
    max-height: 100%;
    max-width: 100%;
    object-fit: contain;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-text-light);
    letter-spacing: 0.5px;
}

.logo-subtitle {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-text-light-muted);
}

/* Navigation Links */
.nav-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-link {
    color: var(--color-text-light-muted);
    font-size: 0.9rem;
    font-weight: 500;
    padding: 0.5rem 0.25rem;
    position: relative;
    transition: color var(--transition-fast);
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: width var(--transition-smooth);
}

.nav-link:hover::after, .nav-link.active::after {
    width: 100%;
}

/* Highlight button (Technical Services) */
.nav-btn-highlight {
    background-color: transparent;
    color: var(--color-accent);
    border: 1.5px solid var(--color-accent);
    padding: 0.5rem 1.2rem;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
    transition: all var(--transition-smooth);
}

.nav-btn-highlight:hover {
    background-color: var(--color-accent);
    color: var(--color-primary);
    box-shadow: 0 0 10px rgba(229, 184, 66, 0.4);
}

/* Language Switcher */
.nav-controls {
    display: flex;
    align-items: center;
    gap: 1.2rem;
}

.lang-switch-container {
    display: flex;
    align-items: center;
    background-color: rgba(255, 255, 255, 0.08);
    padding: 0.3rem 0.6rem;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.lang-btn {
    background: none;
    border: none;
    color: var(--color-text-light-muted);
    font-size: 0.75rem;
    font-weight: 700;
    cursor: pointer;
    padding: 0.2rem 0.4rem;
    transition: color var(--transition-fast);
}

.lang-btn.active {
    color: var(--color-accent);
}

.lang-divider {
    color: rgba(255, 255, 255, 0.2);
    font-size: 0.7rem;
    margin: 0 0.2rem;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--color-text-light);
    font-size: 1.5rem;
    cursor: pointer;
}

/* --- Mobile Menu Drawer --- */
.mobile-drawer {
    position: fixed;
    top: 0;
    right: -300px;
    width: 280px;
    height: 100vh;
    background-color: var(--color-primary);
    z-index: 1002;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: right var(--transition-smooth);
    box-shadow: var(--shadow-lg);
}

.mobile-drawer.active {
    right: 0;
}

.drawer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2.5rem;
}

.drawer-close {
    background: none;
    border: none;
    color: var(--color-text-light);
    font-size: 1.5rem;
    cursor: pointer;
}

.drawer-links {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.drawer-link {
    color: var(--color-text-light-muted);
    font-size: 1rem;
    font-weight: 500;
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.drawer-link:hover, .drawer-link.active {
    color: var(--color-accent);
}

.drawer-link.highlight {
    color: var(--color-accent);
    border: 1px solid var(--color-accent);
    border-radius: var(--radius-sm);
    text-align: center;
    padding: 0.75rem;
    margin-top: 1rem;
}

.drawer-link.highlight:hover {
    background-color: var(--color-accent);
    color: var(--color-primary);
}

.drawer-footer {
    display: flex;
    justify-content: center;
}

.drawer-socials {
    display: flex;
    gap: 1.5rem;
    font-size: 1.2rem;
    color: var(--color-text-light-muted);
}

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

.drawer-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 1001;
    display: none;
}

.drawer-overlay.active {
    display: block;
}

/* --- Hero Section Styling --- */
.hero-section {
    position: relative;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    color: var(--color-text-light);
    padding: 8rem 2rem 6rem;
    min-height: 85vh;
    display: flex;
    align-items: center;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(10, 25, 47, 0.92) 30%, rgba(17, 34, 64, 0.8) 100%);
    z-index: 1;
}

.hero-container {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    background-color: var(--color-accent);
    color: var(--color-primary);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.35rem 0.85rem;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 1.5rem;
    animation: fadeInUp 0.8s ease;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    max-width: 800px;
    color: var(--color-text-light);
    animation: fadeInUp 1s ease;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--color-text-light-muted);
    margin-bottom: 2.5rem;
    max-width: 650px;
    line-height: 1.7;
    animation: fadeInUp 1.2s ease;
}

.hero-buttons {
    display: flex;
    gap: 1.2rem;
    animation: fadeInUp 1.4s ease;
}

/* Buttons */
.btn-primary {
    background-color: var(--color-accent);
    color: var(--color-primary);
    font-weight: 600;
    padding: 0.8rem 1.8rem;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    border: 1.5px solid var(--color-accent);
    transition: all var(--transition-smooth);
}

.btn-primary:hover {
    background-color: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
    box-shadow: 0 8px 20px rgba(229, 184, 66, 0.3);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-text-light);
    font-weight: 600;
    padding: 0.8rem 1.8rem;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    border: 1.5px solid var(--color-text-light);
    transition: all var(--transition-smooth);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

/* Animation KEYFRAMES */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* --- Stats Band Styling --- */
.stats-band {
    background-color: var(--color-primary);
    border-bottom: 3px solid var(--color-accent);
    padding: 2.5rem 2rem;
    position: relative;
    z-index: 10;
}

.stats-container {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    text-align: center;
}

.stat-item {
    padding: 1rem;
    border-right: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-item:last-child {
    border-right: none;
}

.stat-num {
    font-size: 3rem;
    font-weight: 800;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: 0.5rem;
    display: block;
}

.stat-label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text-light-muted);
}

/* --- Section Standard Styling --- */
.section-padding {
    padding: 6rem 2rem;
}

.section-container {
    max-width: var(--max-width);
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-tag {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 0.75rem;
    display: block;
}

.section-title {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--color-primary);
}

.section-divider {
    width: 60px;
    height: 4px;
    background-color: var(--color-accent);
    margin: 1rem auto 0;
    border-radius: 2px;
}

/* Grid System helper */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem;
}

/* --- News / Updates Section Styling --- */
.news-card {
    background-color: var(--color-bg-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-smooth);
    border: 1px solid var(--color-border-light);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.news-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-border-accent);
}

.news-img-wrapper {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.news-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-smooth);
}

.news-card:hover .news-img {
    transform: scale(1.08);
}

.news-tag {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background-color: var(--color-primary);
    color: var(--color-accent);
    font-size: 0.7rem;
    font-weight: 700;
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    text-transform: uppercase;
}

.news-content {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.news-date {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.news-title {
    font-size: 1.1rem;
    font-weight: 700;
    line-height: 1.4;
    color: var(--color-primary);
    margin-bottom: 0.75rem;
}

.news-desc {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: 1.5rem;
    flex-grow: 1;
    line-height: 1.6;
}

.news-link {
    color: var(--color-primary);
    font-size: 0.85rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    transition: color var(--transition-fast);
}

.news-link:hover {
    color: var(--color-accent);
}

/* --- Events & Seminars Section Styling --- */
.events-section {
    background-color: rgba(10, 25, 47, 0.02);
}

.featured-event-card {
    background-color: var(--color-primary);
    color: var(--color-text-light);
    border-radius: var(--radius-md);
    overflow: hidden;
    padding: 3rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    box-shadow: var(--shadow-md);
    position: relative;
    border-left: 5px solid var(--color-accent);
    height: 100%;
}

.event-badge-gold {
    align-self: flex-start;
    background-color: var(--color-accent);
    color: var(--color-primary);
    font-size: 0.7rem;
    font-weight: 700;
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
}

.event-date-large {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: 1rem;
}

.featured-event-title {
    font-size: 1.8rem;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 1rem;
}

.featured-event-desc {
    color: var(--color-text-light-muted);
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 2rem;
}

.events-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.event-list-item {
    background-color: var(--color-bg-white);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    border: 1px solid var(--color-border-light);
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    gap: 1.5rem;
    transition: all var(--transition-smooth);
}

.event-list-item:hover {
    transform: translateX(6px);
    border-color: var(--color-border-accent);
    box-shadow: var(--shadow-md);
}

.event-mini-date {
    background-color: var(--color-bg-light);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
    padding: 0.75rem 1rem;
    text-align: center;
    min-width: 80px;
}

.mini-day {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-primary);
    display: block;
    line-height: 1;
}

.mini-month {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-text-muted);
    text-transform: uppercase;
}

.event-list-details {
    flex-grow: 1;
}

.event-list-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.event-list-meta {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    display: flex;
    gap: 1rem;
}

.event-list-meta span {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

/* --- Contact Page/Section Styling --- */
.contact-grid {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 3rem;
}

.contact-info-cards {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-card {
    background-color: var(--color-bg-white);
    border-radius: var(--radius-md);
    padding: 2rem;
    border: 1px solid var(--color-border-light);
    box-shadow: var(--shadow-sm);
    display: flex;
    gap: 1.25rem;
    align-items: flex-start;
}

.contact-card-icon {
    font-size: 1.5rem;
    color: var(--color-accent);
    background-color: rgba(229, 184, 66, 0.1);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-card-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.contact-card-text {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* Form Styling */
.contact-form-container {
    background-color: var(--color-bg-white);
    border-radius: var(--radius-md);
    padding: 3rem;
    border: 1px solid var(--color-border-light);
    box-shadow: var(--shadow-md);
}

.form-title {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 1.5rem;
    border-left: 4px solid var(--color-accent);
    padding-left: 0.75rem;
}

.form-grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.2rem;
    margin-bottom: 1.2rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    margin-bottom: 1.2rem;
}

.form-group label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-primary);
}

.form-input, .form-textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1.5px solid var(--color-border-light);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 0.9rem;
    outline: none;
    transition: all var(--transition-fast);
}

.form-input:focus, .form-textarea:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(10, 25, 47, 0.1);
}

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

.btn-submit {
    width: 100%;
    background-color: var(--color-primary);
    color: var(--color-accent);
    border: 1.5px solid var(--color-primary);
    padding: 0.85rem;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-weight: 700;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all var(--transition-smooth);
}

.btn-submit:hover {
    background-color: var(--color-primary-light);
    border-color: var(--color-primary-light);
    box-shadow: var(--shadow-md);
    color: var(--color-accent-hover);
}

.form-status {
    padding: 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 500;
    margin-top: 1rem;
    display: none;
    text-align: center;
}

.form-status.success {
    background-color: rgba(34, 197, 94, 0.1);
    color: #15803d;
    border: 1px solid rgba(34, 197, 94, 0.2);
    display: block;
}

.form-status.error {
    background-color: rgba(239, 68, 68, 0.1);
    color: #b91c1c;
    border: 1px solid rgba(239, 68, 68, 0.2);
    display: block;
}

/* --- About Us Page Styling --- */
.about-hero {
    background-color: var(--color-primary);
    color: var(--color-text-light);
    padding: 5rem 2rem;
    text-align: center;
}

.about-hero-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-text-light);
    margin-bottom: 0.5rem;
}

.about-content-wrapper {
    display: flex;
    flex-direction: column;
    gap: 4rem;
}

.about-block {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text-block h3 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 1.2rem;
    border-bottom: 2px solid var(--color-accent);
    padding-bottom: 0.5rem;
    display: inline-block;
}

.about-text-block p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    line-height: 1.8;
    margin-bottom: 1.2rem;
}

.about-img-block img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border: 4px solid var(--color-bg-white);
}

.mission-vision-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
}

.mv-card {
    background-color: var(--color-bg-white);
    border-radius: var(--radius-md);
    padding: 2.5rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border-light);
    transition: transform var(--transition-fast);
}

.mv-card:hover {
    transform: translateY(-5px);
}

.mv-icon {
    font-size: 2.2rem;
    color: var(--color-accent);
    margin-bottom: 1.2rem;
}

.mv-title {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.mv-desc {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    line-height: 1.7;
}

/* Organization Chart Tree Styles */
.org-chart-wrapper {
    background-color: var(--color-bg-white);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border-light);
    box-shadow: var(--shadow-sm);
    padding: 3rem 2rem;
    text-align: center;
}

.org-chart-title {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 2rem;
}

.org-tree {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}

.org-node {
    background-color: var(--color-primary);
    color: var(--color-text-light);
    border-radius: var(--radius-sm);
    padding: 1rem 2rem;
    box-shadow: var(--shadow-sm);
    display: inline-flex;
    flex-direction: column;
    min-width: 200px;
    border-bottom: 3px solid var(--color-accent);
}

.org-node.accent {
    background-color: var(--color-accent);
    color: var(--color-primary);
    border-bottom: 3px solid var(--color-primary);
}

.org-node .node-title {
    font-size: 0.8rem;
    font-weight: 500;
    opacity: 0.8;
    text-transform: uppercase;
}

.org-node .node-name {
    font-size: 1.05rem;
    font-weight: 700;
}

.org-connector {
    width: 2px;
    height: 30px;
    background-color: var(--color-border-light);
}

.org-row {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    width: 100%;
}

.org-sub-node {
    background-color: var(--color-bg-light);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
    padding: 0.8rem 1.2rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-primary);
    min-width: 170px;
    box-shadow: var(--shadow-sm);
}

/* --- Academics Page Styling --- */
.curriculum-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.curriculum-card {
    background-color: var(--color-bg-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--color-border-light);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-smooth);
    display: flex;
    flex-direction: column;
}

.curriculum-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-border-accent);
}

.curr-header {
    background-color: var(--color-primary);
    color: var(--color-text-light);
    padding: 2.5rem;
    border-bottom: 4px solid var(--color-accent);
}

.curr-title {
    font-size: 1.45rem;
    font-weight: 700;
}

.curr-subtitle {
    font-size: 0.85rem;
    color: var(--color-text-light-muted);
    margin-top: 0.25rem;
}

.curr-body {
    padding: 2.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.curr-stats {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
}

.curr-stat-box {
    flex: 1;
    background-color: var(--color-bg-light);
    padding: 1rem;
    border-radius: var(--radius-sm);
    text-align: center;
    border: 1px solid var(--color-border-light);
}

.curr-stat-val {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--color-primary);
    display: block;
}

.curr-stat-label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.curr-list-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.curr-list {
    margin-bottom: 2.5rem;
}

.curr-list li {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    padding: 0.4rem 0;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.curr-list li i {
    color: var(--color-accent);
}

/* --- Faculty Directory Page Styling --- */
.filter-container {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 3.5rem;
    flex-wrap: wrap;
}

.filter-btn {
    background-color: var(--color-bg-white);
    border: 1.5px solid var(--color-border-light);
    padding: 0.5rem 1.25rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.filter-btn.active {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-accent);
}

.faculty-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
}

.faculty-card {
    background-color: var(--color-bg-white);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border-light);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: all var(--transition-smooth);
    display: flex;
    flex-direction: column;
}

.faculty-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-border-accent);
}

.fac-profile {
    display: flex;
    align-items: center;
    padding: 1.5rem;
    background-color: var(--color-primary);
    color: var(--color-text-light);
    gap: 1.2rem;
    border-bottom: 3px solid var(--color-accent);
}

.fac-avatar {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--color-accent);
    border: 2px solid var(--color-accent);
    flex-shrink: 0;
}

.fac-meta {
    display: flex;
    flex-direction: column;
}

.fac-name {
    font-size: 1.1rem;
    font-weight: 700;
}

.fac-title {
    font-size: 0.75rem;
    color: var(--color-text-light-muted);
    font-weight: 500;
}

.fac-body {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    flex-grow: 1;
    font-size: 0.85rem;
    line-height: 1.6;
}

.fac-info-item {
    display: flex;
    gap: 0.6rem;
}

.fac-info-item i {
    color: var(--color-accent);
    margin-top: 0.25rem;
    flex-shrink: 0;
}

.fac-label {
    font-weight: 700;
    color: var(--color-primary);
    display: block;
}

.fac-val {
    color: var(--color-text-muted);
}

.fac-email-link {
    color: var(--color-primary-light);
    font-weight: 600;
    text-decoration: underline;
}

.fac-email-link:hover {
    color: var(--color-accent);
}

/* --- Research Page Styling --- */
.lab-card {
    background-color: var(--color-bg-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--color-border-light);
    box-shadow: var(--shadow-sm);
    display: flex;
    margin-bottom: 2.5rem;
    transition: all var(--transition-smooth);
}

.lab-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-border-accent);
}

.lab-img-wrapper {
    flex: 1;
    min-height: 250px;
}

.lab-img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.lab-details {
    flex: 1;
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.lab-title {
    font-size: 1.45rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 0.75rem;
}

.lab-leader {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: 1rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.lab-desc {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

/* --- Technical Services Page Styling --- */
.service-header {
    background: linear-gradient(rgba(10, 25, 47, 0.9), rgba(10, 25, 47, 0.9)), url('images/construction_site.png');
    background-size: cover;
    background-position: center;
    color: var(--color-text-light);
    padding: 6rem 2rem;
    text-align: center;
    border-bottom: 4px solid var(--color-accent);
}

.service-header-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-text-light);
}

.services-intro-card {
    background-color: var(--color-bg-white);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border-light);
    padding: 2.5rem;
    box-shadow: var(--shadow-sm);
    margin-bottom: 4rem;
    text-align: center;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.services-intro-text {
    font-size: 1.05rem;
    color: var(--color-text-muted);
    line-height: 1.8;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.service-card {
    background-color: var(--color-bg-white);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border-light);
    padding: 2.5rem;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-smooth);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-border-accent);
}

.service-icon {
    font-size: 2rem;
    color: var(--color-primary);
    background-color: var(--color-bg-light);
    width: 60px;
    height: 60px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    border-bottom: 3px solid var(--color-accent);
}

.service-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 0.75rem;
}

.service-desc {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    line-height: 1.7;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.service-list {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.service-list li {
    padding: 0.3rem 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.service-list li i {
    color: var(--color-accent);
}

/* --- Footer Styling --- */
.site-footer {
    background-color: var(--color-primary);
    color: var(--color-text-light-muted);
    border-top: 5px solid var(--color-accent);
    font-size: 0.85rem;
}

.footer-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 5rem 2rem 4rem;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 2fr;
    gap: 3rem;
}

.footer-col {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.brand-col .footer-logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    color: var(--color-text-light);
}

.brand-col .logo-title {
    font-size: 1.3rem;
    font-weight: 700;
}

.footer-desc {
    line-height: 1.7;
    color: var(--color-text-light-muted);
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    background-color: rgba(255, 255, 255, 0.08);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.95rem;
    color: var(--color-text-light);
    transition: all var(--transition-fast);
}

.social-links a:hover {
    background-color: var(--color-accent);
    color: var(--color-primary);
    transform: translateY(-3px);
}

.footer-title {
    color: var(--color-text-light);
    font-size: 1rem;
    font-weight: 700;
    position: relative;
    padding-bottom: 0.75rem;
}

.footer-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 35px;
    height: 3px;
    background-color: var(--color-accent);
    border-radius: 2px;
}

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

.footer-links-list a {
    color: var(--color-text-light-muted);
    transition: color var(--transition-fast);
}

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

.footer-contact-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-contact-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.85rem;
    line-height: 1.6;
}

.footer-contact-list li i {
    color: var(--color-accent);
    font-size: 1.1rem;
    margin-top: 0.25rem;
    flex-shrink: 0;
}

.footer-bottom {
    background-color: rgba(0, 0, 0, 0.2);
    padding: 2rem 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-bottom-container {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-meta-links {
    display: flex;
    gap: 1.5rem;
}

.footer-meta-links a {
    color: var(--color-text-light-muted);
}

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

/* --- Responsive Media Queries --- */
@media (max-width: 1200px) {
    .footer-container {
        grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
    }
}

@media (max-width: 1024px) {
    .hero-title {
        font-size: 2.8rem;
    }
    
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .faculty-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .service-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-container {
        grid-template-columns: 1fr 1fr;
        gap: 3rem;
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 70px;
    }

    .nav-links {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .hero-title {
        font-size: 2.2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .stats-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    
    .stat-item {
        border-right: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        padding-bottom: 1.5rem;
    }
    
    .stat-item:nth-child(2n) {
        border-right: none;
    }
    
    .stat-item:last-child {
        border-bottom: none;
        padding-bottom: 0;
    }
    
    .grid-2, .grid-3, .faculty-grid, .service-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .about-block {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .about-block:nth-child(2n) .about-img-block {
        order: -1;
    }
    
    .mission-vision-grid {
        grid-template-columns: 1fr;
    }
    
    .curriculum-grid {
        grid-template-columns: 1fr;
    }
    
    .lab-card {
        flex-direction: column;
    }
    
    .lab-img-wrapper {
        min-height: 200px;
    }
    
    .footer-container {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.8rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .btn-primary, .btn-secondary {
        width: 100%;
        justify-content: center;
    }
    
    .stats-container {
        grid-template-columns: 1fr;
    }
    
    .contact-form-container {
        padding: 1.5rem;
    }
    
    .form-grid-2 {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom-container {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-meta-links {
        justify-content: center;
    }
}