:root {
    /* Core Color Palette - Simplified and Harmonized */
    --primary: #ff9022;         /* Dark navy - main brand color */
    --primary-dark: #ff9022;    /* Darker navy for hover states */
    --primary-light: #2c3e50;   /* Lighter navy for backgrounds */
    --secondary: #ffffff;       /* Teal - accent color */
    --secondary-dark: #ff9022;  /* Darker teal for hover states */
    --secondary-light: #de7519; /* Light teal for subtle backgrounds */
    --accent: #ff6b35;          /* Orange - for highlighting */
    --accent-light: #fff1eb;    /* Light orange for subtle highlighting */

    /* Text Colors */
    --text-light: #ffffff;
    --text-dark: #1a2a3a;       /* Matches primary for consistency */
    --text-muted: #6c757d;

    /* Background Colors */
    --bg-light: #ffffff;
    --bg-gray: #f8fafc;         /* Slightly bluer gray for consistency */

    /* Shadow System */
    --shadow-sm: 0 2px 4px rgba(26, 42, 58, 0.05);
    --shadow: 0 4px 8px rgba(26, 42, 58, 0.08);
    --shadow-lg: 0 8px 16px rgba(26, 42, 58, 0.1);

    /* Rounded Corners */
    --radius-sm: 6px;
    --radius: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;

    /* Spacing System */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;

    /* Typography */
    --font-family: 'Poppins', sans-serif;
    --font-size-xs: 0.75rem;   /* 12px */
    --font-size-sm: 0.875rem;  /* 14px */
    --font-size: 1rem;         /* 16px - base */
    --font-size-md: 1.125rem;  /* 18px */
    --font-size-lg: 1.25rem;   /* 20px */
    --font-size-xl: 1.5rem;    /* 24px */
    --font-size-2xl: 1.875rem; /* 30px */
    --font-size-3xl: 2.25rem;  /* 36px */

    /* Animation */
    --transition-fast: all 0.2s ease;
    --transition: all 0.3s ease;
    --transition-slow: all 0.4s ease;
}

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

/* Enhanced Navbar Styling - Harmonized with the color scheme */
.navbar {
    background: var(--primary);
    box-shadow: var(--shadow);
    padding: 0.6rem 1rem;
    transition: var(--transition);
}

.navbar-brand {
    font-size: var(--font-size-lg);
}

.navbar-brand span {
    color: var(--text-light);
    font-weight: 700;
}

.brand-logo-container {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: white;
    padding: 3px;
    box-shadow: var(--shadow);
}

.navbar-brand img {
    height: 40px;
    width: auto;
    transition: var(--transition);
}

.navbar-brand:hover img {
    transform: scale(1.1) rotate(5deg);
}

.nav-item {
    position: relative;
    margin: 0 4px;
}

.nav-link {
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    position: relative;
    z-index: 1;
    color: rgba(255, 255, 255, 0.85) !important;
    font-size: var(--font-size-sm);
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 0;
    background-color: rgba(78, 205, 196, 0.15);
    transition: var(--transition);
    border-radius: var(--radius-sm);
    z-index: -1;
}

.nav-link:hover::before {
    height: 100%;
}

.nav-link::after {
    display: none;
}

.nav-link:hover {
    color: var(--secondary) !important;
    transform: translateY(-2px);
}

/* Login button styling */
.login-btn {
    background: var(--secondary);
    color: var(--primary) !important;
    border-radius: 50px;
    padding: 0.5rem 1.2rem !important;
    transition: var(--transition);
    font-weight: 600 !important;
}

.login-btn:hover {
    background: var(--text-light);
    color: var(--primary) !important;
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

/* Dropdown styling */
.dropdown-menu {
    border: none;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing) 0;
    min-width: 200px;
    margin-top: 10px;
    border-top: 3px solid var(--secondary);
}

.dropdown-item {
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--primary);
    font-weight: 500;
    transition: var(--transition-fast);
    font-size: var(--font-size-sm);
}

.dropdown-item:hover {
    background-color: var(--secondary-light);
    color: var(--secondary-dark);
    padding-left: 1.5rem;
}

/* Hamburger menu for mobile */
.navbar-toggler {
    border: none;
    padding: 0.5rem;
}

.navbar-toggler i {
    color: var(--secondary) !important;
    transition: var(--transition);
}

.navbar-toggler:focus {
    box-shadow: none;
    outline: none;
}

.navbar-toggler:hover i {
    color: var(--text-light) !important;
}

/* Fix for active nav items */
.nav-item.active .nav-link,
.nav-link.active {
    color: var(--secondary) !important;
}

/* Hero Section */
.hero-section {
    background-image: linear-gradient(rgba(26, 42, 58, 0.85), rgba(14, 28, 41, 0.95)), url('../images/banner.jpg');
    background-size: cover;
    background-position: center;
    padding: 7rem 0;
    position: relative;
    color: var(--text-light);
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.hero-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    animation: fadeInDown 1s ease;
}

.hero-subtitle {
    font-size: var(--font-size-md);
    margin-bottom: var(--spacing-lg);
    font-weight: 300;
    line-height: 1.6;
    animation: fadeInUp 1s ease;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing);
    animation: fadeInUp 1.2s ease;
}

.btn-secondary {
    background-color: var(--secondary);
    border-color: var(--secondary);
    padding: 0.75rem 1.75rem;
    font-weight: 600;
    border-radius: var(--radius);
    transition: var(--transition);
    color: var(--primary);
}

.btn-secondary:hover {
    background-color: var(--secondary-dark);
    border-color: var(--secondary-dark);
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

.btn-outline-light {
    padding: 0.75rem 1.75rem;
    font-weight: 600;
    border-radius: var(--radius);
    transition: var(--transition);
}

.btn-outline-light:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

/* Section Styling */
section {
    padding: var(--spacing-xl) 0;
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    position: relative;
}

.section-title h2 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--primary);
    margin-bottom: var(--spacing);
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    display: block;
    width: 70px;
    height: 3px;
    background: linear-gradient(to right, var(--secondary-dark), var(--secondary));
    margin: 0.5rem auto 0;
    border-radius: 2px;
}

.section-title p {
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto;
    font-size: var(--font-size);
}

/* Feature Cards */
.features-section {
    background-color: var(--bg-gray);
}

.feature-card {
    background-color: var(--bg-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    height: 100%;
    border: none;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

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

.feature-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 70px;
    height: 70px;
    background-color: var(--secondary-light);
    border-radius: 50%;
    margin-bottom: var(--spacing-lg);
    transition: var(--transition);
}

.feature-card:hover .feature-icon {
    background-color: var(--secondary);
    transform: scale(1.1) rotate(5deg);
}

.feature-card:hover .feature-icon i {
    color: var(--text-light);
}

.feature-icon i {
    font-size: 2rem;
    color: var(--secondary-dark);
    transition: var(--transition);
}

.feature-card h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing);
    font-weight: 600;
    color: var(--primary);
}

.feature-card p {
    color: var(--text-muted);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size);
}

.btn-feature {
    background-color: var(--primary);
    color: var(--text-light);
    padding: 0.6rem 1.5rem;
    font-weight: 600;
    border-radius: var(--radius);
    border: none;
    transition: var(--transition);
    width: 100%;
    text-align: center;
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-feature:hover {
    background-color: var(--secondary);
    color: var(--primary);
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

/* About Section */
.about-section {
    background-color: var(--bg-light);
}

.about-img {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
}

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

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

.about-content h2 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--primary);
    margin-bottom: var(--spacing-md);
    position: relative;
    padding-bottom: var(--spacing);
}

.about-content h2::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 80px;
    height: 4px;
    background-color: var(--secondary);
    border-radius: 2px;
}

.about-content p {
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.about-features {
    margin-top: var(--spacing-lg);
}

.about-feature-item {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing);
}

.about-feature-icon {
    min-width: 40px;
    height: 40px;
    background-color: var(--secondary-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: var(--spacing);
}

.about-feature-icon i {
    color: var(--secondary);
    font-size: 1.2rem;
}

.about-feature-text {
    font-weight: 500;
    color: var(--primary-light);
}

/* Stats Section */
.stats-section {
    background-color: var(--primary);
    color: var(--text-light);
}

.stat-card {
    text-align: center;
    padding: var(--spacing-lg);
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-10px);
}

.stat-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 70px;
    height: 70px;
    background-color: rgba(78, 205, 196, 0.2);
    border-radius: 50%;
    margin-bottom: var(--spacing-md);
    font-size: 2rem;
    color: var(--secondary);
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.stat-title {
    font-weight: 500;
    font-size: var(--font-size-md);
    opacity: 0.9;
}

/* Footer */
.footer {
    background-color: var(--primary);
    color: var(--text-light);
    padding: 5rem 0 2rem;
}

.footer-logo img {
    height: 80px;
    margin-bottom: var(--spacing-md);
}

.footer-about {
    margin-bottom: var(--spacing-lg);
}

.footer-about p {
    opacity: 0.8;
    line-height: 1.7;
}

.footer-heading {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    position: relative;
    padding-bottom: var(--spacing-sm);
}

.footer-heading::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 40px;
    height: 3px;
    background-color: var(--secondary);
    border-radius: 1.5px;
}

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

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

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

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

.footer-links a i {
    font-size: 0.8rem;
}

.footer-contact li {
    margin-bottom: var(--spacing);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing);
}

.footer-contact li i {
    color: var(--secondary);
    font-size: 1.2rem;
    margin-top: 0.2rem;
}

.social-links {
    display: flex;
    gap: var(--spacing);
    margin-top: var(--spacing-md);
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(78, 205, 196, 0.2);
    border-radius: 50%;
    color: var(--text-light);
    transition: var(--transition);
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-lg);
    margin-top: var(--spacing-xl);
    text-align: center;
}

.footer-bottom p {
    opacity: 0.8;
    margin: 0.5rem 0;
}

/* Teacher Profiles */
.teacher-card {
    background-color: white;
    border-radius: var(--radius);
    overflow: hidden;
    transition: all 0.35s ease;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    height: 100%;
    position: relative;
    z-index: 1;
}

.teacher-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(26, 42, 58, 0.05), rgba(78, 205, 196, 0.05));
    z-index: -1;
    opacity: 0;
    transition: opacity 0.35s ease;
}

.teacher-card:hover {
    transform: translateY(-7px);
    box-shadow: var(--shadow-lg);
}

.teacher-card:hover::before {
    opacity: 1;
}

.teacher-img-wrapper {
    padding: 1.5rem 1.5rem 0.75rem;
    display: flex;
    justify-content: center;
}

.teacher-img {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    overflow: hidden;
    background-color: #f5f5f5;
    box-shadow: var(--shadow);
    transition: all 0.35s ease;
    border: 4px solid white;
}

.teacher-card:hover .teacher-img {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
    border-color: var(--secondary-light);
}

.teacher-name {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--primary);
    transition: color 0.3s ease;
}

.teacher-card:hover .teacher-name {
    color: var(--secondary-dark);
}

.teacher-badge {
    font-size: var(--font-size-xs);
    background: linear-gradient(135deg, rgba(26, 42, 58, 0.08), rgba(78, 205, 196, 0.08));
    color: var(--primary);
    padding: 0.35rem 0.85rem;
    border-radius: 30px;
    display: inline-block;
    transition: all 0.3s ease;
    border: 1px solid rgba(78, 205, 196, 0.1);
}

.teacher-card:hover .teacher-badge {
    background: linear-gradient(135deg, rgba(78, 205, 196, 0.1), rgba(78, 205, 196, 0.2));
    color: var(--secondary-dark);
    padding: 0.35rem 1rem;
}

/* Organization Chart */
.org-box {
    background-color: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    padding: 15px;
    transition: var(--transition);
    text-align: center;
    width: 200px;
    margin: 0 10px;
    border-top: 4px solid var(--primary);
}

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

.org-box-primary {
    border-color: var(--primary);
    background-color: rgba(26, 42, 58, 0.05);
}

.org-box-secondary {
    border-color: var(--secondary);
    background-color: rgba(78, 205, 196, 0.05);
}

.org-box-accent {
    border-color: var(--accent);
    background-color: rgba(255, 107, 53, 0.05);
}

/* History Timeline */
.history-year {
    cursor: pointer;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: 600;
    color: var(--text-muted);
    transition: var(--transition);
    text-align: center;
    position: relative;
    z-index: 2;
}

.history-year:hover {
    transform: translateY(-3px);
    color: var(--secondary-dark);
}

.history-year.active {
    background: linear-gradient(135deg, var(--primary), var(--secondary-dark));
    color: white;
    box-shadow: var(--shadow);
}

/* Timeline dots */
.timeline-dot {
    position: absolute;
    top: 30px;
    left: 50%;
    width: 20px;
    height: 20px;
    background-color: var(--secondary);
    border-radius: 50%;
    transform: translateX(-50%);
    z-index: 2;
    box-shadow: 0 0 0 4px rgba(78, 205, 196, 0.2);
    transition: var(--transition);
}

.timeline-item:hover .timeline-dot,
.timeline-item.active .timeline-dot {
    transform: translateX(-50%) scale(1.3);
    box-shadow: 0 0 0 6px rgba(78, 205, 196, 0.3), 0 0 20px rgba(78, 205, 196, 0.5);
}

/* Vision and Mission */
.vm-card {
    background-color: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid rgba(0,0,0,0.05);
    overflow: hidden;
}

.vm-card:hover {
    box-shadow: var(--shadow);
}

.vm-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.vm-card:first-child .vm-icon {
    background-color: rgba(26, 42, 58, 0.1);
    color: var(--primary);
}

.vm-card:last-child .vm-icon {
    background-color: rgba(78, 205, 196, 0.1);
    color: var(--secondary);
}

.mission-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 26px;
    height: 26px;
    background-color: var(--secondary);
    color: white;
    border-radius: 50%;
    font-weight: bold;
    font-size: 0.8rem;
    margin-right: 12px;
    flex-shrink: 0;
}

/* Majors */
.major-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 50px;
    height: 50px;
    background-color: rgba(78, 205, 196, 0.1);
    border-radius: 50%;
    margin-right: 15px;
    transition: var(--transition);
}

.major-icon i {
    font-size: 1.5rem;
    color: var(--secondary-dark);
}

.major-card-compact:hover .major-icon {
    background-color: var(--secondary);
}

.major-card-compact:hover .major-icon i {
    color: white;
}

.major-tabs .nav-link {
    border-radius: var(--radius-sm);
    padding: 0.5rem 1.25rem;
    font-weight: 500;
    color: var(--text-dark);
    border: 1px solid transparent;
    transition: var(--transition-fast);
}

.major-tabs .nav-link:hover {
    background-color: rgba(78, 205, 196, 0.05);
}

.major-tabs .nav-link.active {
    background-color: var(--secondary);
    color: white;
    box-shadow: var(--shadow-sm);
}

.badge.bg-primary-light {
    background-color: rgba(78, 205, 196, 0.1);
    color: var(--secondary-dark);
    font-weight: 500;
    font-size: 0.7rem;
}

/* Responsive */
@media (max-width: 991px) {
    .hero-title {
        font-size: var(--font-size-2xl);
    }

    .navbar-collapse {
        background-color: var(--primary);
        padding: var(--spacing);
        border-radius: 0 0 var(--radius) var(--radius);
    }

    .about-img {
        margin-bottom: var(--spacing-lg);
    }
}

@media (max-width: 767px) {
    .hero-section {
        padding: 5rem 0;
    }

    .hero-title {
        font-size: var(--font-size-xl);
    }

    .hero-buttons {
        flex-direction: column;
        gap: var(--spacing);
    }

    .section-title h2 {
        font-size: var(--font-size-xl);
    }

    .stat-number {
        font-size: 2.5rem;
    }

    .stat-card {
        margin-bottom: var(--spacing-lg);
    }

    .footer {
        padding: 3rem 0 1rem;
    }

    .footer-col {
        margin-bottom: var(--spacing-lg);
    }
}

/* Animations */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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