/* ==========================================================================
   PMV (Prakash Mahavidyalaya) Redesign Stylesheet
   Designed & Developed with modern CSS, Flexbox, Grid, and Custom Properties.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Root variables & Design Tokens
   -------------------------------------------------------------------------- */
:root {
    /* Color Palette */
    --primary-color: #0b4c61;       /* Dark Teal/Blue - brand primary */
    --primary-hover: #043647;
    --secondary-color: #0284c7;     /* Sky blue accent */
    --accent-color: #f59e0b;        /* Amber accent */
    --bg-dark: #0f172a;             /* Slate 900 */
    --bg-card-dark: #1e293b;        /* Slate 800 */
    --bg-light: #f8fafc;            /* Slate 50 */
    --text-dark: #1e293b;           /* Slate 800 */
    --text-muted: #64748b;          /* Slate 500 */
    --text-light: #ffffff;
    --border-color: #e2e8f0;        /* Slate 200 */
    --white: #ffffff;
    
    /* Gradients */
    --gradient-hero: linear-gradient(135deg, rgba(11, 76, 97, 0.95), rgba(2, 132, 199, 0.85));
    --gradient-primary: linear-gradient(135deg, #0b4c61, #0284c7);
    --gradient-accent: linear-gradient(135deg, #f59e0b, #d97706);
    --gradient-card-hover: linear-gradient(135deg, rgba(11, 76, 97, 0.03), rgba(2, 132, 199, 0.03));

    /* Typography */
    --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
    
    /* Miscellaneous */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-light);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.25;
    color: var(--primary-color);
}

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

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

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

ul {
    list-style: none;
}

/* Helper Classes */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.text-center { text-align: center; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

/* --------------------------------------------------------------------------
   3. Header & Navigation
   -------------------------------------------------------------------------- */

/* Top Bar */
.top-bar {
    background-color: var(--bg-dark);
    color: var(--text-light);
    font-size: 0.85rem;
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.top-bar-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.contact-info span {
    margin-right: 1.5rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

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

.social-links-top a {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
}

.social-links-top a:hover {
    color: var(--accent-color);
}

/* Main Header */
.main-header {
    background-color: var(--white);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.75rem 1.5rem;
}

.logo-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.header-logo {
    height: 48px;
    width: auto;
}

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

.brand-title {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--primary-color);
    letter-spacing: -0.5px;
    line-height: 1.1;
}

.brand-sub {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 500;
}

/* Primary Navigation */
.primary-navigation ul {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.primary-navigation a {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.6rem 0.9rem;
    color: var(--text-dark);
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    white-space: nowrap;
}

.primary-navigation a:hover,
.primary-navigation a.active {
    color: var(--primary-color);
    background-color: rgba(11, 76, 97, 0.08);
}

/* Mobile Nav Toggle */
.mobile-nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--primary-color);
    cursor: pointer;
    z-index: 2000;
}

.mobile-nav-toggle .close-icon {
    display: none;
}

/* --------------------------------------------------------------------------
   4. Slider Section (Hero Area)
   -------------------------------------------------------------------------- */
.slider-wrapper {
    position: relative;
    width: 100%;
    height: 480px;
    overflow: hidden;
    background-color: var(--bg-dark);
}

.custom-slider {
    position: relative;
    width: 100%;
    height: 100%;
}

.custom-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    visibility: hidden;
    transition: opacity 1s ease-in-out, visibility 1s ease-in-out;
    z-index: 1;
}

.custom-slide.slide-active {
    opacity: 1;
    visibility: visible;
    z-index: 2;
}

.custom-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

/* Slide Overlay Graphic & Caption */
.slide-overlay {
    position: absolute;
    inset: 0;
    background: var(--gradient-hero);
    z-index: 3;
    display: flex;
    align-items: center;
}

.slide-caption-box {
    max-width: 800px;
    color: var(--white);
    padding: 0 1.5rem;
    animation: fadeInUp 0.8s ease;
}

.slide-caption-box h2 {
    font-size: 3rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 1rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.slide-caption-box p {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 1.5rem;
    text-shadow: 0 1px 2px rgba(0,0,0,0.2);
}

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

/* --------------------------------------------------------------------------
   5. Home Layout & Widgets
   -------------------------------------------------------------------------- */
.home-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2.5rem;
    margin: 3rem auto;
}

/* Card Styles */
.message-card {
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    padding: 2rem;
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.message-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    background: var(--gradient-card-hover);
}

.message-header {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.message-img {
    width: 90px;
    height: 90px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.message-sender h4 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.15rem;
}

.message-sender p {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
}

.message-sender .phone-tag {
    color: var(--secondary-color);
    font-size: 0.85rem;
    font-weight: 600;
}

.message-body {
    font-style: italic;
    color: var(--text-dark);
    line-height: 1.7;
    position: relative;
    padding-left: 1.5rem;
    border-left: 3px solid var(--accent-color);
}

/* Right Sidebar */
.sidebar-section {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* Latest News Ticker */
.news-box {
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.news-box-header {
    background-color: var(--primary-color);
    color: var(--text-light);
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.news-box-header h3 {
    color: var(--text-light);
    font-size: 1.2rem;
    margin: 0;
}

.news-list-container {
    height: 250px;
    overflow: hidden;
    position: relative;
    padding: 1rem 1.5rem;
}

/* Smooth Scrolling Animation for News */
.news-scroll-list {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    animation: scrollNews 15s linear infinite;
}

.news-scroll-list:hover {
    animation-play-state: paused;
}

.news-item {
    padding-bottom: 0.75rem;
    border-bottom: 1px dashed var(--border-color);
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

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

.news-icon {
    color: var(--accent-color);
    margin-top: 0.25rem;
}

.news-link {
    font-weight: 600;
    color: var(--primary-color);
    font-size: 0.95rem;
}

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

.news-item img {
    height: 16px;
    vertical-align: middle;
    margin-left: 0.25rem;
}

@keyframes scrollNews {
    0% { transform: translateY(0); }
    100% { transform: translateY(-70%); }
}

/* Action Box */
.action-box {
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    padding: 1.5rem;
    border: 1px solid var(--border-color);
    text-align: center;
}

.action-box h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.action-box p {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

/* Premium Buttons */
.btn-premium {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--white);
    background: var(--gradient-primary);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.btn-premium:hover {
    background: var(--gradient-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: var(--white);
}

.btn-premium-accent {
    background: var(--gradient-accent);
}

.btn-premium-accent:hover {
    background: var(--gradient-accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-block {
    display: flex;
    width: 100%;
    margin-bottom: 0.75rem;
}

/* --------------------------------------------------------------------------
   6. Subpages Header Banner
   -------------------------------------------------------------------------- */
.subpage-banner {
    position: relative;
    width: 100%;
    height: 250px;
    background-color: var(--bg-dark);
    overflow: hidden;
}

.subpage-banner img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    opacity: 0.45;
}

.subpage-banner-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to right, rgba(11, 76, 97, 0.9), rgba(15, 23, 42, 0.6));
    display: flex;
    align-items: center;
}

.subpage-banner-container {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    padding: 0 1.5rem;
    color: var(--white);
}

.subpage-banner-container h1 {
    font-size: 2.75rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 0.5rem;
}

.breadcrumbs {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
    display: flex;
    gap: 0.5rem;
}

.breadcrumbs a {
    color: var(--accent-color);
}

.breadcrumbs span {
    color: rgba(255, 255, 255, 0.5);
}

/* --------------------------------------------------------------------------
   7. Page Contents (About, Faculty, Courses, etc.)
   -------------------------------------------------------------------------- */
.main-content-section {
    padding: 4rem 0;
}

.section-title-line {
    position: relative;
    margin-bottom: 2.5rem;
}

.section-title-line h2 {
    font-size: 2.25rem;
    margin-bottom: 0.5rem;
    position: relative;
    display: inline-block;
}

.section-title-line::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background-color: var(--accent-color);
    margin-top: 0.5rem;
    border-radius: 2px;
}

/* About Layout */
.about-grid {
    display: grid;
    grid-template-columns: 3fr 2fr;
    gap: 3rem;
    align-items: center;
}

.about-text p {
    margin-bottom: 1.5rem;
    font-size: 1.05rem;
    color: var(--text-dark);
    line-height: 1.8;
}

.about-img-box {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    border: 6px solid var(--white);
}

/* Faculty layout */
.faculty-intro-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 2.5rem;
    margin-bottom: 3.5rem;
    background: var(--white);
    padding: 2.5rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.principal-card-img img {
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    border: 4px solid var(--primary-color);
    width: 100%;
}

.principal-info h3 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
}

.principal-info .badge {
    background: var(--primary-color);
    color: var(--text-light);
    padding: 0.35rem 0.75rem;
    font-size: 0.85rem;
    border-radius: 50px;
    display: inline-block;
    margin-bottom: 1rem;
}

.principal-info p {
    font-size: 1.05rem;
    margin-bottom: 0.5rem;
}

/* Modern Tables styling */
.table-wrapper {
    overflow-x: auto;
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    margin-bottom: 3rem;
    border: 1px solid var(--border-color);
}

.table-premium {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.table-premium th {
    background-color: var(--primary-color);
    color: var(--text-light);
    padding: 1rem 1.25rem;
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
}

.table-premium td {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.95rem;
    color: var(--text-dark);
}

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

.table-premium tr:nth-child(even) {
    background-color: rgba(11, 76, 97, 0.02);
}

.table-premium tr:hover {
    background-color: rgba(11, 76, 97, 0.05);
}

/* Course Layout */
.course-layout-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    align-items: flex-start;
}

.course-side-graphic img {
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    width: 100%;
}

.course-box-container {
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    padding: 2.5rem;
    border: 1px solid var(--border-color);
}

/* Achievements / Gallery section */
.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
}

.achievement-card {
    background: var(--white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.achievement-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.achievement-img {
    height: 220px;
    width: 100%;
    overflow: hidden;
}

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

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

.achievement-info {
    padding: 1.5rem;
}

.achievement-info h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.achievement-info p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Facilities Layout */
.facilities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
}

.facility-card {
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.facility-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.facility-img {
    height: 240px;
    overflow: hidden;
}

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

.facility-body {
    padding: 1.75rem;
}

.facility-body h3 {
    font-size: 1.35rem;
    margin-bottom: 0.75rem;
}

.facility-body p {
    font-size: 0.95rem;
    color: var(--text-dark);
}

/* Lab Details sub-layout */
.lab-card-row {
    margin-top: 3rem;
    background: var(--white);
    padding: 2rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.lab-images-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.lab-img-item {
    border-radius: var(--radius-sm);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.lab-img-item img {
    width: 100%;
    height: 280px;
    object-fit: cover;
}

.lab-img-item h4 {
    background: var(--primary-color);
    color: var(--text-light);
    padding: 0.75rem;
    text-align: center;
    font-size: 1rem;
}

/* Contact Page styling */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.25fr;
    gap: 3rem;
}

.contact-info-panel {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-info-card {
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    padding: 2rem;
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.contact-info-card:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-lg);
}

.contact-info-icon {
    background-color: rgba(11, 76, 97, 0.1);
    color: var(--primary-color);
    font-size: 1.5rem;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-info-content h4 {
    font-size: 1.15rem;
    margin-bottom: 0.25rem;
}

.contact-info-content p {
    color: var(--text-dark);
}

/* Contact Form */
.contact-form-panel {
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 2.5rem;
    border: 1px solid var(--border-color);
}

.contact-form-panel h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

.form-group-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.contact-form-panel .form-group {
    margin-bottom: 1.25rem;
}

.contact-form-panel label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-dark);
}

.contact-form-panel .input-wrapper {
    position: relative;
}

.contact-form-panel .input-wrapper i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 0.9rem;
}

.contact-form-panel input,
.contact-form-panel textarea {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 0.95rem;
    transition: var(--transition);
}

.contact-form-panel textarea {
    padding-left: 1rem;
}

.contact-form-panel input:focus,
.contact-form-panel textarea:focus {
    border-color: var(--secondary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
}

/* Results styling */
.result-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2.5rem;
    background: var(--white);
    padding: 3rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.result-image-frame {
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 8px solid var(--white);
    outline: 1px solid var(--border-color);
    max-width: 100%;
    transition: var(--transition);
}

.result-image-frame:hover {
    transform: scale(1.01);
    box-shadow: var(--shadow-xl);
}

.result-image-frame img {
    display: block;
    width: 100%;
    height: auto;
}

/* --------------------------------------------------------------------------
   8. Footer Layout (Shared)
   -------------------------------------------------------------------------- */
.main-footer-section {
    background-color: var(--bg-dark);
    color: rgba(255, 255, 255, 0.8);
    position: relative;
    padding-top: 3rem;
    margin-top: 4rem;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem 3rem 1.5rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.25fr;
    gap: 2.5rem;
}

.footer-col h3 {
    color: var(--white);
    font-size: 1.35rem;
    margin-bottom: 1rem;
}

.footer-col h4 {
    color: var(--white);
    font-size: 1.15rem;
    margin-bottom: 1.25rem;
    position: relative;
}

.footer-col h4::after {
    content: '';
    display: block;
    width: 40px;
    height: 3px;
    background-color: var(--accent-color);
    margin-top: 0.4rem;
    border-radius: 2px;
}

.footer-desc {
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.social-links-footer {
    display: flex;
    gap: 0.75rem;
}

.social-links-footer a {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.08);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.95rem;
}

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

.links-col ul {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.links-col a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    white-space: nowrap;
}

.links-col a:hover {
    color: var(--accent-color);
    padding-left: 5px;
}

.contact-col {
    font-size: 0.9rem;
}

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

.contact-list li {
    display: flex;
    gap: 0.75rem;
    align-items: flex-start;
}

.contact-list i {
    color: var(--accent-color);
    font-size: 1rem;
    margin-top: 0.25rem;
}

.footer-logo {
    height: 60px;
    margin-bottom: 1rem;
}

/* Footer Bottom */
.footer-bottom {
    background-color: #0b0f19;
    padding: 1.5rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    font-size: 0.85rem;
}

.footer-bottom-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.developer-credit a {
    color: var(--accent-color);
}

/* --------------------------------------------------------------------------
   9. Glassmorphic Modal & Forms
   -------------------------------------------------------------------------- */
.modal-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(8px);
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal-overlay.modal-active {
    opacity: 1;
    visibility: visible;
}

.modal-content-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 1.5rem;
}

.modal-card {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: var(--radius-md);
    width: 100%;
    max-width: 500px;
    padding: 2.5rem;
    position: relative;
    box-shadow: var(--shadow-xl);
    transform: translateY(20px);
    transition: var(--transition);
}

.modal-overlay.modal-active .modal-card {
    transform: translateY(0);
}

.modal-close-btn {
    position: absolute;
    top: 1rem;
    right: 1.25rem;
    background: none;
    border: none;
    font-size: 1.75rem;
    cursor: pointer;
    color: var(--text-muted);
}

.modal-close-btn:hover {
    color: var(--primary-color);
}

.modal-header {
    margin-bottom: 1.5rem;
}

.modal-header h3 {
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
}

.modal-header p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.modal-form .form-group {
    margin-bottom: 1.25rem;
}

.modal-form label {
    display: block;
    margin-bottom: 0.4rem;
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--text-dark);
}

.modal-form .input-wrapper {
    position: relative;
}

.modal-form .input-wrapper i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 0.9rem;
}

.modal-form input,
.modal-form textarea {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 0.95rem;
    transition: var(--transition);
    background: rgba(255, 255, 255, 0.8);
}

.modal-form textarea {
    padding-left: 1rem;
}

.modal-form input:focus,
.modal-form textarea:focus {
    border-color: var(--secondary-color);
    outline: none;
    background: var(--white);
    box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
}

.submit-btn-premium {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--gradient-primary);
    color: var(--white);
    border: none;
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    font-size: 1rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.submit-btn-premium:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Scroll to Top */
.scroll-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--primary-color);
    color: var(--white);
    width: 45px;
    height: 45px;
    border-radius: 50%;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

.scroll-to-top.btn-visible {
    opacity: 1;
    visibility: visible;
}

.scroll-to-top:hover {
    background: var(--secondary-color);
    transform: translateY(-3px);
}

/* --------------------------------------------------------------------------
   10. Responsiveness (Mobile Adaptive)
   -------------------------------------------------------------------------- */

@media (max-width: 992px) {
    .home-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
}

@media (min-width: 1025px) and (max-width: 1200px) {
    .primary-navigation a {
        padding: 0.5rem 0.65rem;
        font-size: 0.85rem;
        gap: 0.25rem;
    }
    .nav-container {
        padding: 0.75rem 1rem;
    }
    .brand-title {
        font-size: 1.15rem;
    }
}

@media (max-width: 1024px) {
    .top-bar {
        display: none;
    }
    
    .brand-title {
        font-size: 1.25rem;
    }
    
    .mobile-nav-toggle {
        display: block;
    }
    
    .primary-navigation {
        position: fixed;
        inset: 0 0 0 30%;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        box-shadow: -5px 0 15px rgba(0,0,0,0.15);
        z-index: 1500;
        padding: 6rem 2rem;
        transform: translateX(100%);
        transition: transform 0.4s ease;
    }
    
    .primary-navigation.nav-open {
        transform: translateX(0);
    }
    
    .mobile-nav-toggle[aria-expanded="true"] .menu-icon {
        display: none;
    }
    
    .mobile-nav-toggle[aria-expanded="true"] .close-icon {
        display: block;
    }
    
    .primary-navigation ul {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
        width: 100%;
    }
    
    .primary-navigation a {
        font-size: 1.1rem;
        width: 100%;
        padding: 0.8rem 1rem;
    }
}

@media (max-width: 768px) {
    .slide-caption-box h2 {
        font-size: 2rem;
    }
    
    .slide-caption-box p {
        font-size: 1rem;
    }
    
    .slider-wrapper {
        height: 320px;
    }
    
    .faculty-intro-grid {
        grid-template-columns: 1fr;
        padding: 1.5rem;
        gap: 1.5rem;
    }
    
    .principal-card-img {
        max-width: 250px;
        margin: 0 auto;
    }
    
    .course-layout-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .lab-images-row {
        grid-template-columns: 1fr;
    }
    
    .form-group-row {
        grid-template-columns: 1fr;
        gap: 0;
    }
    
    .footer-bottom-container {
        flex-direction: column;
        text-align: center;
        gap: 0.5rem;
    }
}

@media (max-width: 480px) {
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .slide-caption-box h2 {
        font-size: 1.6rem;
    }
    
    .slider-wrapper {
        height: 260px;
    }
    
    .section-title-line h2 {
        font-size: 1.8rem;
    }
    
    .modal-card {
        padding: 1.5rem;
    }
    
    .achievement-card {
        min-width: 100%;
    }
    
    .facilities-grid {
        grid-template-columns: 1fr;
    }
}