* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html { scroll-behavior: smooth; }

        :root {
            --primary: #4361ee;
            --primary-dark: #3a56d4;
            --secondary: #7209b7;
            --light: #f8f9fa;
            --dark: #212529;
            --gray: #6c757d;
            --success: #4cc9f0;
            --gradient: linear-gradient(135deg, #4361ee, #7209b7);
            --shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        }

        body {
            background-color: #f5f7ff;
            color: var(--dark);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            overflow-x: hidden;
        }

        /* Header and Navbar Styles (identical) */
        header {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            box-shadow: var(--shadow);
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 1000;
            border-bottom: 3px solid transparent;
            background: linear-gradient(white, white) padding-box,
                        var(--gradient) border-box;
        }

        .navbar-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 70px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            text-decoration: none;
            position: relative;
            overflow: hidden;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            background: var(--gradient);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 20px;
            animation: logoPulse 3s infinite ease-in-out;
        }

        .logo-text {
            font-size: 26px;
            font-weight: 800;
            background: var(--gradient);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            position: relative;
        }

        .logo-text::after {
            content: 'iGenhub';
            position: absolute;
            left: 0;
            top: 0;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.8), transparent);
            width: 100%;
            height: 100%;
            transform: translateX(-100%);
            animation: shine 5s infinite;
        }

        .nav-links {
            display: flex;
            list-style: none;
            gap: 10px;
        }

        .nav-links li {
            position: relative;
        }

        .nav-links a {
            text-decoration: none;
            color: var(--dark);
            font-weight: 600;
            font-size: 16px;
            padding: 10px 18px;
            border-radius: 8px;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 6px;
            position: relative;
            overflow: hidden;
        }

        .nav-links a:hover {
            background-color: rgba(67, 97, 238, 0.08);
            color: var(--primary);
            transform: translateY(-2px);
        }

        .nav-links a.active {
            background: var(--gradient);
            color: white;
            box-shadow: 0 5px 15px rgba(67, 97, 238, 0.3);
        }

        .nav-links a.active::before {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 50%;
            transform: translateX(-50%);
            width: 6px;
            height: 6px;
            background-color: var(--success);
            border-radius: 50%;
            box-shadow: 0 0 10px var(--success);
        }

        .dropdown-content {
            position: absolute;
            top: 100%;
            left: 0;
            background: white;
            min-width: 220px;
            box-shadow: var(--shadow);
            border-radius: 12px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(10px);
            transition: var(--transition);
            z-index: 100;
            overflow: hidden;
        }

        .dropdown:hover .dropdown-content {
            opacity: 1;
            visibility: visible;
            transform: translateY(5px);
        }

        .dropdown-content a {
            padding: 15px 20px;
            border-bottom: 1px solid rgba(0,0,0,0.05);
            display: flex;
            align-items: center;
            gap: 12px;
            border-radius: 0;
        }

        .dropdown-content a:last-child {
            border-bottom: none;
        }

        .dropdown-content a i {
            color: var(--primary);
            width: 20px;
            text-align: center;
        }

        .dropdown-content a:hover {
            background-color: rgba(67, 97, 238, 0.1);
            padding-left: 25px;
        }

        .recent-activity {
            position: relative;
        }

        .activity-indicator {
            position: absolute;
            top: 5px;
            right: 5px;
            width: 8px;
            height: 8px;
            background-color: var(--success);
            border-radius: 50%;
            animation: pulse 1.5s infinite;
        }

        .login-btn {
            background: var(--gradient);
            color: white;
            border: none;
            padding: 10px 24px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 16px;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 5px 15px rgba(67, 97, 238, 0.3);
            position: relative;
            overflow: hidden;
        }

        .login-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(67, 97, 238, 0.4);
        }

        .login-btn::after {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
            transition: 0.5s;
        }

        .login-btn:hover::after {
            left: 100%;
        }

        /* Login Modal Styles */
        .login-modal-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            backdrop-filter: blur(4px);
            z-index: 10000;
            display: flex;
            justify-content: flex-end;
            align-items: flex-start;
            padding: 20px;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s ease, visibility 0.3s ease;
        }

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

        .login-modal {
            background: white;
            border-radius: 20px;
            padding: 0;
            width: 420px;
            max-width: 90vw;
            max-height: 90vh;
            overflow-y: auto;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
            transform: translateX(100%) scale(0.9);
            transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            position: relative;
            margin-top: 80px;
        }

        .login-modal-overlay.active .login-modal {
            transform: translateX(0) scale(1);
        }

        .login-modal-header {
            background: var(--gradient);
            padding: 24px 28px;
            border-radius: 20px 20px 0 0;
            color: white;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .login-modal-header h2 {
            font-size: 1.5rem;
            font-weight: 700;
            margin: 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .login-modal-close {
            background: rgba(255, 255, 255, 0.2);
            border: none;
            color: white;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.2s ease;
            font-size: 1.2rem;
        }

        .login-modal-close:hover {
            background: rgba(255, 255, 255, 0.3);
            transform: rotate(90deg);
        }

        .login-modal-body {
            padding: 32px 28px;
        }

        .login-form-group {
            margin-bottom: 22px;
        }

        .login-form-group label {
            display: block;
            font-weight: 600;
            color: #2d3748;
            margin-bottom: 8px;
            font-size: 0.95rem;
        }

        .login-form-group input {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid #e2e8f0;
            border-radius: 10px;
            font-size: 1rem;
            transition: all 0.3s ease;
            box-sizing: border-box;
        }

        .login-form-group input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.1);
        }

        .login-form-group .error-message {
            color: #e63946;
            font-size: 0.85rem;
            margin-top: 6px;
            display: none;
        }

        .login-form-group.error input {
            border-color: #e63946;
        }

        .login-form-group.error .error-message {
            display: block;
        }

        .password-constraints {
            font-size: 0.85rem;
            color: #718096;
            margin-top: 6px;
            padding-left: 4px;
        }

        .password-constraints ul {
            list-style: none;
            padding: 0;
            margin: 6px 0 0 0;
        }

        .password-constraints li {
            padding: 4px 0;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .password-constraints li.valid {
            color: #48bb78;
        }

        .password-constraints li i {
            font-size: 0.75rem;
        }

        .login-btn-submit {
            width: 100%;
            padding: 14px;
            background: var(--gradient);
            color: white;
            border: none;
            border-radius: 10px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            margin-top: 8px;
            box-shadow: 0 4px 15px rgba(67, 97, 238, 0.3);
        }

        .login-btn-submit:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(67, 97, 238, 0.4);
        }

        .login-btn-submit:disabled {
            opacity: 0.6;
            cursor: not-allowed;
            transform: none;
        }

        .login-divider {
            display: flex;
            align-items: center;
            margin: 24px 0;
            color: #a0aec0;
            font-size: 0.9rem;
        }

        .login-divider::before,
        .login-divider::after {
            content: '';
            flex: 1;
            height: 1px;
            background: #e2e8f0;
        }

        .login-divider span {
            padding: 0 12px;
        }

        .login-google-btn {
            width: 100%;
            padding: 12px;
            background: white;
            border: 2px solid #e2e8f0;
            border-radius: 10px;
            font-size: 1rem;
            font-weight: 600;
            color: #2d3748;
            cursor: pointer;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .login-google-btn:hover {
            border-color: #4285f4;
            background: #f7fafc;
            box-shadow: 0 2px 8px rgba(66, 133, 244, 0.15);
        }

        .login-google-btn i {
            font-size: 1.2rem;
            color: #4285f4;
        }

        .login-forgot-password {
            text-align: center;
            margin-top: 16px;
        }

        .login-forgot-password a {
            color: var(--primary);
            text-decoration: none;
            font-size: 0.9rem;
            font-weight: 500;
            transition: color 0.2s ease;
        }

        .login-forgot-password a:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }

        .user-info {
            display: none;
            align-items: center;
            gap: 10px;
            padding: 8px 16px;
            background: rgba(67, 97, 238, 0.1);
            border-radius: 50px;
            color: var(--primary);
            font-weight: 600;
            font-size: 0.95rem;
        }

        .user-info.active {
            display: flex;
        }

        .user-info i {
            font-size: 1rem;
        }

        .login-btn.hidden {
            display: none;
        }

        .mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: transparent;
            border: none;
            cursor: pointer;
            padding: 5px;
        }

        .mobile-toggle span {
            width: 25px;
            height: 3px;
            background: var(--primary);
            border-radius: 3px;
            transition: var(--transition);
        }

        /* ----- HORIZONTAL TAB BAR (LMS, CONFERENCES, PUBLICATIONS) - right-aligned, theme style ----- */
        .section-tabs {
            max-width: 1200px;
            margin: 90px auto 0;
            padding: 0 20px;
            display: flex;
            justify-content: flex-end;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        .tab-link {
            font-size: 1rem;
            font-weight: 600;
            padding: 12px 22px;
            background: rgba(67, 97, 238, 0.08);
            border: 2px solid rgba(67, 97, 238, 0.15);
            border-radius: 50px;
            color: var(--gray);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
        }

        .tab-link i {
            color: var(--primary);
            font-size: 1.05rem;
            transition: color 0.2s ease;
        }

        .tab-link:hover {
            background: rgba(67, 97, 238, 0.12);
            border-color: rgba(67, 97, 238, 0.25);
            color: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(67, 97, 238, 0.15);
        }

        .tab-link.active-tab {
            background: var(--gradient);
            border-color: transparent;
            color: white;
            box-shadow: 0 6px 20px rgba(67, 97, 238, 0.4);
        }

        .tab-link.active-tab i {
            color: white;
        }

        /* Main content area – body changes per tab */
        .main-content {
            max-width: 1200px;
            margin: 30px auto 50px;
            padding: 0 20px;
            flex: 1;
            width: 100%;
        }

        /* hide/show content groups */
        .tab-page {
            display: none;
            animation: fadeIn 0.4s ease;
        }

        .tab-page.active-page {
            display: block;
        }

        /* all original sections placed inside LMS page by default – full viewport width */
        .banner {
            width: 100vw;
            max-width: 100vw;
            margin-left: calc(50% - 50vw);
            margin-right: calc(50% - 50vw);
            min-height: 72vh;
            max-height: 90vh;
            background: url('igenhub.png') no-repeat center center / cover;
            margin-top: 0;
            border-bottom: 5px solid var(--primary);
        }

        /* Footer Styles */
        footer {
            background: linear-gradient(135deg, #1a202c 0%, #2d3748 100%);
            color: #e2e8f0;
            padding: 50px 20px 25px;
            margin-top: 60px;
            border-top: 4px solid;
            border-image: var(--gradient) 1;
        }

        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 30px;
        }

        .footer-section h3 {
            color: white;
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-section h3 i {
            color: var(--primary);
            font-size: 1.1rem;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }

        .footer-logo-icon {
            width: 40px;
            height: 40px;
            background: var(--gradient);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 20px;
        }

        .footer-logo-text {
            font-size: 1.5rem;
            font-weight: 800;
            background: var(--gradient);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .footer-section p {
            color: #cbd5e0;
            font-size: 0.95rem;
            line-height: 1.6;
            margin-bottom: 12px;
        }

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

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: #cbd5e0;
            text-decoration: none;
            font-size: 0.95rem;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-links a:hover {
            color: var(--primary);
            transform: translateX(5px);
        }

        .footer-links a i {
            font-size: 0.85rem;
            width: 16px;
        }

        .footer-contact-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            margin-bottom: 14px;
            color: #cbd5e0;
            font-size: 0.95rem;
        }

        .footer-contact-item i {
            color: var(--primary);
            font-size: 1rem;
            margin-top: 2px;
            flex-shrink: 0;
        }

        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 16px;
        }

        .footer-social a {
            width: 40px;
            height: 40px;
            background: rgba(67, 97, 238, 0.1);
            border: 2px solid rgba(67, 97, 238, 0.2);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #cbd5e0;
            font-size: 1.1rem;
            transition: var(--transition);
            text-decoration: none;
        }

        .footer-social a:hover {
            background: var(--gradient);
            border-color: transparent;
            color: white;
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(67, 97, 238, 0.4);
        }

        .footer-bottom {
            max-width: 1200px;
            margin: 0 auto;
            padding-top: 25px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            text-align: center;
            color: #a0aec0;
            font-size: 0.9rem;
        }

        .footer-bottom p {
            margin: 0;
        }

        .footer-bottom a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }

        .footer-bottom a:hover {
            color: var(--success);
        }

        /* ---------- all original styles (courses, upcoming, students, focus, about) kept exactly ---------- */
        .courses-section { padding: 40px 0 80px; }
        .courses-section .section-title { text-align: center; font-size: 32px; margin-bottom: 40px; color: #222; }
        .courses-container { display: grid; grid-template-columns: repeat(3,1fr); gap: 25px; max-width: 1200px; margin: auto; }
        .course-card { background: #fff; border-radius: 12px; padding: 15px; box-shadow: 0 4px 12px rgba(0,0,0,0.08); transition: transform 0.3s ease; }
        .course-card:hover { transform: translateY(-8px); }
        .course-card img { width: 100%; border-radius: 10px; }
        .course-card h3 { margin: 15px 0 5px; font-size: 20px; }
        .course-card span { font-size: 14px; color: #666; }
        .course-card p { font-size: 14px; margin: 10px 0 15px; color: #444; }
        .course-card button { width: 100%; padding: 10px; border: none; background: #007bff; color: #fff; border-radius: 8px; cursor: pointer; font-size: 15px; }
        .course-card button:hover { background: #0056b3; }

        .upcoming-courses-section { width: 100%; min-height: 380px; background: linear-gradient(135deg, #f0f7ff 0%, #ffffff 100%); padding: 50px 5%; display: flex; align-items: center; justify-content: center; position: relative; overflow: hidden; border-top: 1px solid rgba(10,79,179,0.08); border-bottom: 1px solid rgba(10,79,179,0.08); }
        .upcoming-courses-section .container { max-width: 1200px; width: 100%; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 28px; }
        .upcoming-courses-section .section-left { flex: 1; min-width: 260px; color: #1a202c; padding-right: 24px; }
        .upcoming-courses-section .section-heading { font-size: 1.85rem; font-weight: 700; line-height: 1.25; margin-bottom: 12px; position: relative; color: #083c87; }
        .upcoming-courses-section .section-heading::after { content: ''; position: absolute; left: 0; bottom: -6px; width: 50px; height: 3px; background: linear-gradient(90deg, #0a4fb3, #4ecdc4); border-radius: 2px; }
        .upcoming-courses-section .section-subtitle { font-size: 0.95rem; font-weight: 400; margin-bottom: 14px; color: #4a5568; max-width: 420px; line-height: 1.5; }
        .upcoming-courses-section .courses-count { display: inline-block; background: linear-gradient(135deg, #0a4fb3, #083c87); color: white; padding: 6px 16px; border-radius: 50px; font-size: 0.85rem; font-weight: 500; margin-top: 6px; }
        .upcoming-courses-section .section-right { flex: 1; min-width: 260px; display: flex; justify-content: center; align-items: center; }
        .upcoming-courses-section .course-card { background-color: white; border-radius: 16px; box-shadow: 0 12px 28px rgba(0,0,0,0.15); overflow: hidden; width: 100%; max-width: 380px; transition: transform 0.3s ease; position: relative; }
        .upcoming-courses-section .course-card:hover { transform: translateY(-4px); }
        .upcoming-courses-section .course-image-container { height: 180px; width: 100%; overflow: hidden; position: relative; }
        .upcoming-courses-section .course-image { width: 100%; height: 100%; object-fit: cover; transition: transform 0.8s ease; }
        .upcoming-courses-section .course-card:hover .course-image { transform: scale(1.05); }
        .upcoming-courses-section .course-badge { position: absolute; top: 12px; right: 12px; background-color: #4ecdc4; color: white; padding: 4px 12px; border-radius: 50px; font-size: 0.75rem; font-weight: 600; z-index: 2; }
        .upcoming-courses-section .course-content { padding: 20px 22px; }
        .upcoming-courses-section .course-title { font-size: 1.25rem; font-weight: 700; color: #083c87; margin-bottom: 10px; line-height: 1.3; }
        .upcoming-courses-section .course-meta { display: flex; align-items: center; margin-bottom: 12px; flex-wrap: wrap; gap: 12px; }
        .upcoming-courses-section .meta-item { display: flex; align-items: center; color: #666; font-size: 0.85rem; }
        .upcoming-courses-section .meta-item i { margin-right: 6px; color: #0a4fb3; }
        .upcoming-courses-section .course-description { color: #555; margin-bottom: 16px; font-size: 0.9rem; line-height: 1.45; }
        .upcoming-courses-section .card-navigation { display: flex; justify-content: center; align-items: center; margin-top: 14px; gap: 12px; flex-wrap: nowrap; }
        .upcoming-courses-section .card-dots { display: flex; gap: 8px; align-items: center; flex-shrink: 0; }
        .upcoming-courses-section .dot { width: 8px; height: 8px; border-radius: 50%; background-color: #ddd; cursor: pointer; transition: background-color 0.3s ease; flex-shrink: 0; }
        .upcoming-courses-section .dot.active { background-color: #0a4fb3; }

        .students-for-students { padding: 60px 20px; max-width: 1200px; margin: 0 auto; }
        .students-container { width: 100%; }
        .students-main-title { font-size: 1.8rem; font-weight: 600; margin-bottom: 15px; color: #1a202c; text-align: center; }
        .students-subtitle { font-size: 1rem; color: #4a5568; text-align: center; max-width: 800px; margin: 0 auto 40px; line-height: 1.6; }
        .students-cards { display: grid; grid-template-columns: repeat(4,1fr); gap: 20px; }
        .students-card { padding: 25px; border-radius: 8px; background: #fff; box-shadow: 0 2px 10px rgba(0,0,0,0.05); transition: transform 0.2s ease; }
        .students-card:hover { transform: translateY(-2px); }
        .card-icon { width: 50px; height: 50px; background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin-bottom: 15px; color: white; font-size: 1.2rem; }
        .card-title { font-size: 1.1rem; font-weight: 600; margin-bottom: 10px; color: #2d3748; }
        .card-text { font-size: 0.9rem; color: #4a5568; line-height: 1.5; }

        .focus-section { width: 100vw; max-width: 100vw; margin-left: calc(50% - 50vw); margin-right: calc(50% - 50vw); background: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%); padding: 60px 0; color: white; overflow: hidden; position: relative; }
        .focus-container { max-width: 1200px; margin: 0 auto; text-align: center; padding: 0 20px; }
        .focus-header { margin-bottom: 40px; }
        .focus-header h2 { font-size: 2.5rem; margin-bottom: 15px; }
        .focus-header p { font-size: 1.2rem; max-width: 800px; margin: 0 auto; }
        .scrolling-items { display: flex; overflow: hidden; width: 100%; padding: 20px 0; }
        .scrolling-track { display: flex; animation: scroll 30s linear infinite; }
        .scrolling-item { display: flex; align-items: center; justify-content: center; flex-shrink: 0; padding: 15px 30px; margin: 0 15px; background: rgba(255,255,255,0.1); border-radius: 50px; backdrop-filter: blur(10px); border: 1px solid rgba(255,255,255,0.2); }
        .scrolling-item i { font-size: 24px; margin-right: 10px; }

        .about-us-section { padding: 80px 20px; background: linear-gradient(135deg, #f0f7ff 0%, #ffffff 100%); position: relative; overflow: hidden; }
        .about-container { max-width: 1200px; margin: 0 auto; }
        .about-header { text-align: center; margin-bottom: 50px; }
        .section-title { font-size: 2.5rem; color: #2d3748; margin-bottom: 15px; font-weight: 600; }
        .title-line { width: 80px; height: 4px; background: linear-gradient(to right, #667eea, #764ba2); margin: 0 auto; border-radius: 2px; }
        .about-content { display: grid; grid-template-columns: repeat(3, 1fr); gap: 25px; align-items: stretch; }
        .about-text { max-width: none; display: contents; }
        .about-paragraph { font-size: 1rem; line-height: 1.7; color: #4a5568; margin: 0; padding: 28px 24px; background: white; border-radius: 12px; box-shadow: 0 8px 25px rgba(0,0,0,0.08); border-top: 4px solid #667eea; opacity: 0; transform: translateY(20px); animation: fadeInUp 0.6s ease forwards; display: flex; flex-direction: column; }
        .about-paragraph:nth-child(1) { border-top-color: #667eea; }
        .about-paragraph:nth-child(2) { border-top-color: #764ba2; animation-delay: 0.15s; }
        .about-paragraph:nth-child(3) { border-top-color: #4361ee; animation-delay: 0.3s; }
        .highlight { color: #667eea; font-weight: 600; }
        .about-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 25px; margin-top: 40px; }
        .feature-card { background: white; padding: 30px 25px; border-radius: 12px; text-align: center; box-shadow: 0 8px 25px rgba(0,0,0,0.08); transition: all 0.3s ease; border-top: 4px solid transparent; opacity: 0; transform: translateY(20px); animation: fadeInUp 0.6s ease forwards; }

        /* Conferences & Meetings tab content */
        .conferences-section { padding: 40px 0 60px; min-height: 400px; width: 100%; }
        .conferences-section .conferences-container { max-width: 1200px; margin: 0 auto; width: 100%; }
        .conferences-section .conferences-title { font-size: 2.2rem; font-weight: 700; margin-bottom: 24px; background: linear-gradient(135deg, #0a4fb3, #7209b7); -webkit-background-clip: text; background-clip: text; color: transparent; }
        .conferences-section .conferences-card-wrap { background: white; border-radius: 20px; padding: 36px; box-shadow: var(--shadow); margin-top: 24px; }
        .conferences-section .conferences-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; align-items: stretch; }
        .conferences-section .conference-item { border-left: 5px solid var(--primary); padding: 0 0 0 20px; min-height: 140px; display: flex; flex-direction: column; justify-content: flex-start; }
        .conferences-section .conference-item:nth-child(2) { border-left-color: #7209b7; }
        .conferences-section .conference-item:nth-child(3) { border-left-color: #4cc9f0; }
        .conferences-section .conference-item i.fa-chalkboard-teacher,
        .conferences-section .conference-item i.fa-users,
        .conferences-section .conference-item i.fa-laptop-code { font-size: 2rem; color: var(--primary); margin-bottom: 12px; }
        .conferences-section .conference-item:nth-child(2) i { color: #7209b7; }
        .conferences-section .conference-item:nth-child(3) i { color: #4cc9f0; }
        .conferences-section .conference-item h3 { font-size: 1.35rem; font-weight: 700; color: #1a202c; margin-bottom: 10px; line-height: 1.3; }
        .conferences-section .conference-item .conference-date { color: #2d3748; font-size: 0.95rem; margin-bottom: 8px; }
        .conferences-section .conference-item .conference-date i { font-size: 0.9rem; margin-right: 6px; }
        .conferences-section .conference-item p:last-child { color: #4a5568; font-size: 0.95rem; line-height: 1.5; margin: 0; }
        .conferences-section .internal-meetings { margin-top: 40px; background: #f0f7ff; padding: 28px 32px; border-radius: 16px; border: 1px solid rgba(67, 97, 238, 0.12); }
        .conferences-section .internal-meetings h4 { font-size: 1.25rem; font-weight: 600; color: #1a202c; margin-bottom: 16px; display: flex; align-items: center; gap: 10px; }
        .conferences-section .internal-meetings h4 i { color: var(--primary); }
        .conferences-section .internal-meetings ul { list-style: none; margin: 0; padding: 0; }
        .conferences-section .internal-meetings li { padding: 14px 0; border-bottom: 1px solid #e2e8f0; display: flex; align-items: center; gap: 12px; font-size: 1rem; color: #2d3748; }
        .conferences-section .internal-meetings li:last-child { border-bottom: none; padding-bottom: 0; }
        .conferences-section .internal-meetings li i { color: var(--primary); font-size: 0.9rem; flex-shrink: 0; }

        @keyframes logoPulse { 0%,100% { transform: scale(1); } 50% { transform: scale(1.05); box-shadow: 0 0 20px rgba(67,97,238,0.5); } }
        @keyframes shine { 0% { transform: translateX(-100%); } 20%,100% { transform: translateX(100%); } }
        @keyframes pulse { 0%,100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.7; transform: scale(1.2); } }
        @keyframes slideIn { from { opacity: 0; transform: translateY(-20px); } to { opacity: 1; transform: translateY(0); } }
        @keyframes fadeIn { from { opacity: 0.3; } to { opacity: 1; } }
        @keyframes slideInLeft { from { opacity: 0; transform: translateX(-20px); } to { opacity: 1; transform: translateX(0); } }
        @keyframes fadeInUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
        @keyframes scroll { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

        /* Scroll-triggered animations */
        .scroll-animate { opacity: 0; transform: translateY(28px); transition: opacity 0.6s ease, transform 0.6s ease; }
        .scroll-animate.visible { opacity: 1; transform: translateY(0); }
        .scroll-animate-left { opacity: 0; transform: translateX(-24px); transition: opacity 0.6s ease, transform 0.6s ease; }
        .scroll-animate-left.visible { opacity: 1; transform: translateX(0); }
        .scroll-animate-right { opacity: 0; transform: translateX(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
        .scroll-animate-right.visible { opacity: 1; transform: translateX(0); }

        @media (max-width: 992px) {
            .mobile-toggle { display: flex; }
            .nav-links { position: fixed; top: 70px; left: 0; width: 100%; background: white; flex-direction: column; padding: 20px; box-shadow: 0 10px 20px rgba(0,0,0,0.1); transform: translateY(-100%); opacity: 0; visibility: hidden; transition: var(--transition); z-index: 999; }
            .nav-links.active { transform: translateY(0); opacity: 1; visibility: visible; }
            .dropdown-content { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; max-height: 0; overflow: hidden; transition: max-height 0.5s ease; }
            .dropdown.active .dropdown-content { max-height: 300px; margin-top: 10px; margin-left: 20px; }
            .students-cards { grid-template-columns: repeat(2,1fr); }
            .user-info { font-size: 0.9rem; padding: 6px 14px; }
            .user-info span { max-width: 120px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
            .upcoming-courses-section .container { flex-direction: column; gap: 24px; text-align: center; }
            .upcoming-courses-section .section-left { padding-right: 0; padding-bottom: 0; }
            .upcoming-courses-section .section-heading::after { left: 50%; transform: translateX(-50%); }
            .upcoming-courses-section .section-subtitle { margin-left: auto; margin-right: auto; }
            .upcoming-courses-section .section-right { width: 100%; max-width: 400px; margin: 0 auto; }
            .focus-section { padding: 40px 0; }
            .focus-header h2 { font-size: 2rem; }
            .focus-header p { font-size: 1rem; }
            .banner { min-height: 65vh; max-height: 82vh; }
            .conferences-section .conferences-grid { grid-template-columns: 1fr; gap: 24px; }
            .conferences-section .conferences-card-wrap { padding: 28px 24px; }
            .footer-container { grid-template-columns: repeat(2, 1fr); gap: 32px; }
            .footer-section h3 { font-size: 1.1rem; }
        }
        @media (max-width: 768px) {
            .banner { min-height: 55vh; max-height: 70vh; background-position: center center; }
            .section-tabs { gap: 10px; margin-top: 80px; justify-content: flex-end; padding: 0 16px; }
            .tab-link { font-size: 0.95rem; padding: 10px 18px; }
            .about-content { grid-template-columns: 1fr; }
            .courses-section { padding: 30px 0 50px; }
            .courses-section .section-title { font-size: 1.6rem; margin-bottom: 24px; }
            .upcoming-courses-section { min-height: auto; padding: 40px 16px; }
            .upcoming-courses-section .section-heading { font-size: 1.5rem; }
            .upcoming-courses-section .section-subtitle { font-size: 0.9rem; }
            .upcoming-courses-section .course-image-container { height: 160px; }
            .upcoming-courses-section .course-content { padding: 16px 18px; }
            .upcoming-courses-section .course-title { font-size: 1.15rem; }
            .upcoming-courses-section .card-navigation { flex-wrap: wrap; justify-content: center; gap: 10px; }
            .students-for-students { padding: 40px 16px; }
            .students-main-title { font-size: 1.5rem; }
            .students-subtitle { font-size: 0.95rem; }
            .about-us-section { padding: 50px 16px; }
            .about-header .section-title { font-size: 2rem; }
            .conferences-section { padding: 30px 0 50px; }
            footer { padding: 40px 16px 20px; }
            .footer-container { grid-template-columns: 1fr; gap: 28px; text-align: center; }
            .footer-section { text-align: center; }
            .footer-links { text-align: center; }
            .footer-links a { justify-content: center; }
            .footer-social { justify-content: center; }
            .footer-contact-item { justify-content: center; }
            .conferences-section .conferences-title { font-size: 1.85rem; margin-bottom: 20px; }
            .conferences-section .conferences-card-wrap { padding: 24px 20px; }
            .conferences-section .conference-item h3 { font-size: 1.2rem; }
            .conferences-section .internal-meetings { padding: 22px 24px; margin-top: 32px; }
        }
        @media (max-width: 576px) {
            .banner { min-height: 48vh; max-height: 62vh; background-size: cover; background-position: center; }
            .students-cards { grid-template-columns: 1fr; }
            .courses-container { grid-template-columns: 1fr; gap: 20px; }
            .section-tabs { flex-wrap: wrap; gap: 8px; margin-top: 70px; padding: 0 12px; justify-content: center; }
            .tab-link { font-size: 0.9rem; padding: 10px 14px; }
            .about-content { grid-template-columns: 1fr; }
            .main-content { padding: 0 16px; margin: 20px auto 40px; }
            .navbar-container { padding: 0 16px; height: 60px; }
            .upcoming-courses-section .course-image-container { height: 140px; }
            .upcoming-courses-section .course-card { max-width: 100%; }
            .focus-header h2 { font-size: 1.6rem; }
            .scrolling-item { padding: 10px 20px; font-size: 0.9rem; }
            .about-paragraph { padding: 20px 18px; font-size: 0.95rem; }
            .conferences-section .conferences-grid { grid-template-columns: 1fr; gap: 20px; }
            .conferences-section .conferences-title { font-size: 1.6rem; }
            .conferences-section .conferences-card-wrap { padding: 20px 16px; border-radius: 16px; }
            .conferences-section .conference-item { padding-left: 16px; min-height: auto; }
            .conferences-section .internal-meetings { padding: 20px 18px; margin-top: 28px; }
            .conferences-section .internal-meetings h4 { font-size: 1.1rem; }
            .conferences-section .internal-meetings li { font-size: 0.95rem; padding: 12px 0; }
            .footer-container { grid-template-columns: repeat(2, 1fr); gap: 28px; }
            .footer-section { text-align: left; }
            .footer-links { text-align: left; }
            .footer-links a { justify-content: flex-start; }
            .login-modal-overlay { padding: 0; }
            .login-modal { width: 100%; max-width: 100%; margin-top: 0; border-radius: 20px 20px 0 0; max-height: 85vh; }
            .login-modal-header { padding: 20px; }
            .login-modal-header h2 { font-size: 1.3rem; }
            .login-modal-body { padding: 24px 20px; }
            .user-info { font-size: 0.85rem; padding: 6px 12px; }
        }
        @media (max-width: 400px) {
            .banner { min-height: 42vh; max-height: 55vh; }
            .section-tabs { margin-top: 60px; gap: 6px; padding: 0 10px; justify-content: center; }
            .tab-link { font-size: 0.85rem; padding: 8px 12px; }
            .upcoming-courses-section .section-heading { font-size: 1.35rem; }
            .login-modal-header { padding: 18px; }
            .login-modal-header h2 { font-size: 1.2rem; }
            .login-modal-body { padding: 20px 16px; }
            .login-form-group input { padding: 10px 14px; font-size: 0.95rem; }
            .login-btn-submit { padding: 12px; font-size: 0.95rem; }
            .login-google-btn { padding: 10px; font-size: 0.95rem; }
            .footer-container { grid-template-columns: 1fr; gap: 30px; }
            .footer-section { text-align: center; }
            .footer-social { justify-content: center; }
            .footer-links { text-align: center; }
            .footer-links a { justify-content: center; }
        }