:root {
            --iit-blue: #00356B;
            --iit-gold: #FFD700;
            --iit-light-blue: #0056b3;
            --accent-color: #E37222;
            --light-bg: #f8f9fa;
            --submenu-bg: #f0f4f8;
            --max-content-width: 1200px;
        }

        /* Keep header fixed and reserve space for content */
        .header-container {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1100;
            background: #fff;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            transition: all .25s ease;
            will-change: transform, padding;
        }

        .announcement-bar {
            background: linear-gradient(90deg, var(--iit-blue) 0%, var(--iit-light-blue) 100%);
            color: white;
            padding: 8px 0;
            font-size: 14px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .announcement-bar::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--iit-gold), var(--accent-color), var(--iit-gold));
        }

        .announcement-text {
            position: relative;
            display: inline-block;
            padding: 0 20px;
            min-height: 20px;
        }

        .announcement-text i {
            margin-right: 8px;
            color: var(--iit-gold);
        }

        /* Typing animation */
        .typing-text {
            display: inline-block;
            position: relative;
        }

        .typing-text::after {
            content: '|';
            position: absolute;
            right: -8px;
            animation: blink 1s infinite;
        }

        /* header inner layout */
        .top-bar {
            padding: 0;
            border-bottom: 1px solid rgba(0, 0, 0, 0.04);
            background: #fff;
            transition: opacity .2s ease, padding .2s ease, height .2s ease;
        }

        .header-inner {
            max-width: var(--max-content-width);
            margin: 0 auto;
            padding: 0 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
        }

        .logo-wrapper {
            display: flex;
            align-items: center;
            flex: 0 0 auto;
        }

        .logo {
            height: 100px;
            width: auto;
            max-width: 100%;
            transition: height .2s ease;
        }

        .header-actions {
            margin-left: auto;
            display: flex;
            gap: 12px;
            align-items: center;
            position: absolute;
            right: 16px;
        }

        .action-btn {
            background: transparent;
            border: none;
            color: var(--iit-blue);
            border-radius: 6px;
            padding: 8px;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
        }

        .action-btn i {
            font-size: 18px;
        }

        .action-btn:hover {
            background: rgba(0, 53, 107, 0.06);
            transform: scale(1.03);
        }


        /* NAVBAR (keeps bootstrap structure) */
        .nav-bar {
            background: linear-gradient(135deg, var(--iit-blue) 0%, #00264d 100%);
        }

        .nav-inner {
            max-width: var(--max-content-width);
            margin: 0 auto;
            padding: 0 16px;
        }

        .navbar .nav-link {
            color: #fff !important;
            font-weight: 500;
            font-family: 'Poppins', sans-serif;
            letter-spacing: 0.3px;
        }

        .navbar .navbar-nav {
            align-items: center;
            gap: 6px;
            justify-content: center;
            width: 100%;
        }

        .navbar .nav-item .nav-link {
            padding: 8px 14px;
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }

        .navbar .nav-link:hover,
        .navbar .nav-link:focus {
            color: var(--iit-gold) !important;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 6px;
        }

        .dropdown-menu {
            background: #fff;
            border: none;
            border-radius: 0 0 8px 8px;
            padding: 8px 0;
            min-width: 240px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
            margin-top: 0;
            border-top: 3px solid var(--iit-blue);
        }

        .dropdown-item {
            color: var(--iit-blue) !important;
            font-weight: 500;
            padding: 10px 18px;
            display: flex;
            gap: 10px;
            align-items: center;
        }

        .dropdown-item:hover {
            background: rgba(0, 53, 107, 0.06) !important;
            padding-left: 22px;
        }

        /* .navbar-toggler-icon {
            
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(0,53,107,1)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
            width: 18px;
            height: 18px;
        } */

        /* Ensure the three bars stack vertically and are visible */
        .navbar-toggler {
            display: flex !important;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 8px;
            line-height: 0;
            background: #fff;
            border: 2px solid var(--iit-blue);
            width: 48px;
            height: 42px;
            z-index: 1200;
            position: absolute;
            right: 16px;
            top: 50%;
            transform: translateY(-50%);
        }

        /* bar visuals */
        .toggler-bar {
            width: 22px;
            height: 2px;
            background: var(--iit-blue);
            margin: 3px 0;
            border-radius: 2px;
            transition: transform .28s ease, opacity .22s ease;
            box-sizing: border-box;
        }

        .navbar-toggler.open .middle {
            opacity: 0;
            transform: scaleX(.6);
        }

        .navbar-toggler.open .bottom {
            transform: translateY(-6px) rotate(-45deg);
        }

        .toggler-bar {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--iit-blue);
            margin: 3px 0;
            border-radius: 2px;
            transition: transform .28s ease, opacity .22s ease;
            box-sizing: border-box;
        }

        .navbar-toggler.open .top {
            transform: translateY(6px) rotate(45deg);
        }

        /* mobile panel styles */
        @media (max-width: 991.98px) {
            .logo {
                height: 80px;
            }

            .header-inner {
                padding: 0 12px;
            }

            /* make collapse visually appear as a modal panel below the header */
            .navbar-collapse {
                position: absolute;
                left: 0;
                right: 0;
                top: 100% !important;
				width: 100%;
				box-sizing: border-box;
				padding: 0 !important;
				margin: 0;
                z-index: 1045;
                background: #fff;
                box-shadow: 0 6px 24px rgba(0, 0, 0, 0.12);
                border-radius: 0 0 8px 8px;
                max-height: calc(100vh - var(--header-height, 140px));
                overflow-y: auto;
                transform-origin: top;
                transition: transform .26s ease, opacity .26s ease;
                /* padding: 8px 0; */
            }

            /* when collapsed (hidden) hide it */
            .navbar-collapse:not(.show) {
                visibility: hidden;
                opacity: 0;
                transform: translateY(-8px) scaleY(.98);
                height: 0;
                pointer-events: none;
            }

            /* visible */
            .navbar-collapse.show {
                visibility: visible;
                opacity: 1;
                transform: translateY(0) scaleY(1);
                pointer-events: auto;
            }

            .navbar-nav {
                flex-direction: column;
                gap: 0;
                width: 100%;
                padding: 6px 0;
            }

            .navbar-nav .nav-item {
                width: 100%;
                border-bottom: 1px solid rgba(0, 0, 0, 0.04);
            }

            .navbar-nav .nav-item .nav-link {
                color: var(--iit-blue) !important;
                padding: 12px 18px;
                justify-content: space-between;
            }

            .navbar-nav .nav-item .nav-link i {
                color: var(--iit-light-blue);
            }

            .dropdown-menu {
                background: var(--submenu-bg);
                /*border-left: 4px solid var(--iit-gold);*/
                box-shadow: none;
                margin: 0;
                min-width: unset;
                position: static !important;
                transform: none !important;
                display: none;
                padding: 0;
            }

            .dropdown-menu.show {
                display: block !important;
                animation: slideDown .28s ease;
            }

            .dropdown-item {
                padding: 12px 20px 12px 40px;
                background: var(--submenu-bg) !important;
                color: var(--iit-blue) !important;
                border-bottom: 1px solid rgba(0, 0, 0, 0.04);
            }

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

            @keyframes slideDown {
                from {
                    opacity: 0;
                    transform: translateY(-6px);
                }

                to {
                    opacity: 1;
                    transform: translateY(0);
                }
            }

            /* mobile overlay */
            .mobile-menu-overlay {
                position: fixed;
                top: calc(var(--header-height, 140px));
                left: 0;
                right: 0;
                bottom: 0;
                background: rgba(0, 0, 0, 0.45);
                z-index: 1040;
                display: none;
            }

            .mobile-menu-overlay.show {
                display: block;
            }

            .header-actions {
                margin-left: 12px;
                gap: 8px;
            }

            .action-btn {
                width: 40px;
                height: 40px;
                padding: 6px;
            }

            .digital-learning-icon {
                width: 40px;
                height: 40px;
                font-size: 16px;
            }
        }

        /* desktop dropdown hover show */
        @media (min-width: 992px) {
            .dropdown:hover .dropdown-menu {
                display: block;
            }
        }

        /* compact header when scrolled */
        .header-container.scrolled {
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
            transform: translateY(0);
        }

        .header-container.scrolled .logo {
            height: 70px;
        }
		
		 /* Hide logo bar on scroll for desktop only (keep mobile hamburger available) */
        @media (min-width: 992px) {
            .header-container.scrolled .top-bar {
                display: none;
            }
        }

        /* reserved spacer */
        #navbar-spacer {
            width: 100%;
            height: 140px;
            transition: height .2s ease;
        }

        /* some helpers */
        .visually-hidden {
            position: absolute !important;
            height: 1px;
            width: 1px;
            overflow: hidden;
            clip: rect(1px, 1px, 1px, 1px);
            white-space: nowrap;
        }

        /* ===== Fix: position hamburger to right of header (mobile) ===== */
        .header-inner {
            position: relative;
        }

        /* ===== Fix: align mobile nav items and icon spacing ===== */
        @media (max-width: 991.98px) {

            /* keep links left-aligned and icons separated neatly */
            .navbar-nav .nav-item .nav-link {
                justify-content: flex-start !important;
                gap: 12px;
                padding: 12px 18px;
                text-align: left;
            }

            .navbar-nav .nav-item .nav-link i {
                min-width: 26px;
                text-align: center;
                margin-right: 8px;
                color: var(--iit-light-blue);
            }

            /* make sure dropdown-toggle chevron sits at the far right */
            .dropdown-toggle::after {
                margin-left: auto;
                transform: none;
            }
        }

        /* ===== Small tweak: ensure header spacer accounts for absolute toggler */
        #navbar-spacer {
            transition: height .2s cubic-bezier(.2, .8, .2, 1);
        }

        @media (max-width: 380px) {
            .logo {
                height: 64px !important;
            }
            .header-actions {
                display: none;
            }
            /* optional: hide action icons on tiny screens */
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(0, 53, 107, 0.3);
            outline: none;
        }

        /* increase cross translation so the cross arms clear the button bounds */
        .navbar-toggler.open .top {
            transform: translateY(7px) rotate(45deg) !important;
        }

        .navbar-toggler.open .middle {
            opacity: 0 !important;
            transform: scaleX(.6) !important;
        }

        .navbar-toggler.open .bottom {
            transform: translateY(-7px) rotate(-45deg) !important;
        }

        /* hide toggler on larger viewports (desktop) - strong specificity + !important to override duplicates */
        @media (min-width: 992px) {
            .navbar-toggler {
                display: none !important;
                visibility: hidden !important;
                pointer-events: none !important;
            }
        }
        .header-container,
        .top-bar,
        .header-inner {
            overflow: visible !important;
            z-index: 1200;
        }

        /* Toggler safety: let bars extend beyond button bounds and raise z-index */
        .navbar-toggler {
            overflow: visible !important;
            z-index: 1400 !important;
            width: 50px !important;
            height: 52px !important;
            padding: 2px !important;
            border-radius: 8px;
            background: #fff;
            display: flex !important;
            align-items: center;
            justify-content: center;
        }

        /* Make bars' transform origin centered so rotation is clean */
        .toggler-bar {
            transform-origin: center;
            width: 28px;
            height: 2px;
            margin: 4px 0;
            border-radius: 2px;
        }

        /* Make cross arms move a bit farther so they don't touch the button border */
        .navbar-toggler.open .top {
            transform: translateY(9px) rotate(45deg) !important;
        }

        .navbar-toggler.open .middle {
            opacity: 0 !important;
            transform: scaleX(.6) !important;
        }

        .navbar-toggler.open .bottom {
            transform: translateY(-9px) rotate(-45deg) !important;
        }

        /* Ensure default bootstrap icon is hidden */
        .navbar-toggler .navbar-toggler-icon {
            display: none !important;
        }

        /* Keep toggler hidden on desktop (strong rule) */
        @media (min-width: 992px) {
            .navbar-toggler {
                display: none !important;
                visibility: hidden !important;
                pointer-events: none !important;
            }
			
			.top-bar {
                height: auto;
                transition: height .28s ease, padding .28s ease, opacity .28s ease;
                will-change: height, opacity;
                overflow: hidden;
            }

            /* Instead of display:none (no transitions), animate to 0 height + 0 opacity */
            .header-container.scrolled .top-bar {
                height: 0 !important;
                padding-top: 0 !important;
                padding-bottom: 0 !important;
                opacity: 0;
                border-bottom: 0 !important;
                pointer-events: none;
            }

            .header-container.scrolled .logo {
                height: 0 !important;
                visibility: hidden;
            }

            /* ensure navbar stays pinned and visible */
            .header-container.scrolled .nav-bar {
                position: relative;
                z-index: 1200;
            }

            .announcement-bar {
                transition: height .28s ease, padding .28s ease, opacity .28s ease;
                overflow: hidden;
            }

            .header-container.scrolled .announcement-bar {
                height: 0 !important;
                padding-top: 0 !important;
                padding-bottom: 0 !important;
                opacity: 0 !important;
                pointer-events: none;
            }
        }
		@media (max-width: 768px) {
			.header-inner {
                display: block !important;
            }
            .nav-bar .navbar {
                padding-top: 0 !important;
                padding-bottom: 0 !important;
            }
            .nav-bar {
                line-height: 1.2; 
            }
        }
		
		 /* Make mobile collapse span full width and remove gaps */
        @media (max-width: 991.98px) {
            /* If you use a container inside collapse, ensure it has no horizontal padding */
            .navbar-collapse .container,
            .navbar-collapse .container-fluid {
                padding-left: 0 !important;
                padding-right: 0 !important;
                margin: 0;
                width: 100%;
            }

        }