/* Design System Colors */
:root {
    --primary-color: #003399; /* Dark Blue from logo */
    --primary-hover: #002266;
    --secondary-color: #009933; /* Green from logo */
    --secondary-hover: #007722;
    --accent-color: #ffcc00; /* Yellow from logo */
    --bg-color: #ffffff;
    --text-color: #333333;
    --card-bg: #ffffff;
    --section-bg: #f8f9fa;
}

[data-bs-theme="dark"] {
    --primary-color: #1a4da1;
    --primary-hover: #2960be;
    --secondary-color: #1eb352;
    --secondary-hover: #2ad566;
    --bg-color: #121212;
    --text-color: #e0e0e0;
    --card-bg: #1e1e1e;
    --section-bg: #1a1a1a;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Typography & Links */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
}

a {
    color: var(--primary-color);
    transition: color 0.3s ease;
}
a:hover {
    color: var(--secondary-color);
}

/* Custom Buttons */
.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}
.btn-primary:hover {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
}
.btn-outline-primary {
    color: var(--primary-color);
    border-color: var(--primary-color);
}
.btn-outline-primary:hover {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}
.btn-secondary {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
}
.btn-secondary:hover {
    background-color: var(--secondary-hover);
    border-color: var(--secondary-hover);
}

/* Navbar */
.navbar {
    background-color: var(--bg-color) !important;
    transition: background-color 0.3s ease;
}
.navbar-brand {
    font-size: 1.5rem;
}
.nav-link {
    color: var(--text-color) !important;
    position: relative;
    padding: 0.5rem 1rem;
    transition: color 0.3s ease;
}
.nav-link:hover, .nav-link.active {
    color: var(--secondary-color) !important;
}
.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 50%;
    background-color: var(--secondary-color);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}
.nav-link:hover::after, .nav-link.active::after {
    width: 80%;
}

.btn-admission {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
    font-weight: 600;
}
.btn-admission:hover {
    background-color: var(--secondary-hover);
    border-color: var(--secondary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

/* Hero Section */
.hero-section {
    position: relative;
    background: linear-gradient(rgba(0, 51, 153, 0.8), rgba(0, 153, 51, 0.8)), url('../img/hero-bg.jpg') center/cover no-repeat;
    color: white;
    padding: 100px 0;
    text-align: center;
}

/* Cards & Hover Effects */
.card {
    background-color: var(--card-bg);
    border: none;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    overflow: hidden;
}
.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}
.card-title {
    color: var(--primary-color);
}

/* Sections */
.section-title {
    color: var(--primary-color);
    position: relative;
    margin-bottom: 2rem;
    display: inline-block;
}
.section-title::after {
    content: '';
    position: absolute;
    width: 50px;
    height: 3px;
    background-color: var(--secondary-color);
    bottom: -10px;
    left: 0;
}
.section-title.text-center::after {
    left: 50%;
    transform: translateX(-50%);
}
.bg-light-section {
    background-color: var(--section-bg);
}

/* Back to Top */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 99;
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
    transition: all 0.3s ease;
}
.back-to-top:hover {
    transform: translateY(-3px);
}