/* Custom CSS for Education Institute Website */

:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --success-color: #27ae60;
    --warning-color: #f39c12;
    --light-bg: #f8f9fa;
    --dark-text: #2c3e50;
    --light-text: #7f8c8d;
    --border-color: #e9ecef;
    --shadow: 0 0 20px rgba(0,0,0,0.1);
}

/* Global Styles */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--dark-text);
    background-color: #ffffff;
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Header Styles */
header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    font-size: 0.9rem;
}

.social-links a {
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.social-links a:hover {
    transform: translateY(-2px);
    opacity: 0.8;
}

/* Navigation Styles */
.navbar {
    padding: 1rem 0;
    transition: all 0.3s ease;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
}

.navbar-nav .nav-link {
    font-weight: 500;
    margin: 0 0.2rem;
    padding: 0.7rem 1rem !important;
    border-radius: 6px;
    transition: all 0.3s ease;
    position: relative;
}

.navbar-nav .nav-link:hover {
    background-color: var(--light-bg);
    transform: translateY(-2px);
}

.navbar-nav .nav-link.active {
    background-color: var(--secondary-color);
    color: white !important;
}

/* Dropdown Styles */
.dropdown-menu {
    border: none;
    box-shadow: var(--shadow);
    border-radius: 10px;
    padding: 0.5rem 0;
}

.dropdown-item {
    padding: 0.7rem 1.5rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.dropdown-item:hover {
    background-color: var(--light-bg);
    padding-left: 2rem;
}

/* Loading Spinner */
.spinner-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

/* Main Content Animations */
#mainContent {
    animation: fadeIn 0.5s ease-in;
}

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

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    padding: 100px 0;
    color: white;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%23ffffff" fill-opacity="0.1" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,112C672,96,768,96,864,112C960,128,1056,160,1152,176C1248,192,1344,192,1392,192L1440,192L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') bottom/cover no-repeat;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

/* Feature Cards */
.feature-card {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: none;
    height: 100%;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: white;
    font-size: 2rem;
}

/* Buttons */
.btn {
    border-radius: 8px;
    font-weight: 600;
    padding: 0.7rem 2rem;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    border: none;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(52, 152, 219, 0.4);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

.btn-outline-primary {
    border: 2px solid var(--secondary-color);
    color: var(--secondary-color);
}

.btn-outline-primary:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
}

/* Section Styles */
.section-padding {
    padding: 80px 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 3rem;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
    border-radius: 2px;
}

/* Stats Section */
.stats-section {
    background: linear-gradient(135deg, var(--light-bg), white);
}

.stat-item {
    text-align: center;
    padding: 2rem;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--secondary-color);
    display: block;
}

.stat-label {
    font-size: 1.1rem;
    color: var(--light-text);
    margin-top: 0.5rem;
}

/* Form Styles */
.form-control {
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 0.8rem 1rem;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-control:focus {
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 0.2rem rgba(52, 152, 219, 0.25);
}

.form-label {
    font-weight: 600;
    color: var(--dark-text);
    margin-bottom: 0.7rem;
}

/* Course Cards */
.course-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: none;
}

.course-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.15);
}

.course-image {
    height: 200px;
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    position: relative;
}

.course-price {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: rgba(255,255,255,0.9);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: 700;
    color: var(--primary-color);
}

/* Footer Styles */
.footer {
    background: linear-gradient(135deg, var(--primary-color), #1a252f);
    color: white;
    padding: 60px 0 20px;
}

.footer h5 {
    color: white;
    font-weight: 700;
    margin-bottom: 1.5rem;
    position: relative;
}

.footer h5::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--secondary-color);
}

.footer a {
    color: #bdc3c7;
    text-decoration: none;
    transition: all 0.3s ease;
    line-height: 2;
}

.footer a:hover {
    color: white;
    padding-left: 5px;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 2rem;
    margin-top: 3rem;
}

/* Responsive Design */
@media (max-width: 991.98px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .navbar-nav .nav-link {
        text-align: center;
        margin: 0.2rem 0;
    }
}

@media (max-width: 767.98px) {
    .hero-section {
        padding: 60px 0;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .section-padding {
        padding: 40px 0;
    }
    
    .feature-card {
        margin-bottom: 2rem;
    }
    
    header .row > div {
        text-align: center;
        margin: 0.5rem 0;
    }
}

/* Animation Classes */
.animate-fade-in {
    animation: fadeIn 0.8s ease-out;
}

.animate-slide-up {
    animation: slideUp 0.8s ease-out;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--light-bg);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

/* Page Transition */
.page-transition {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.4s ease;
}

.page-transition.active {
    opacity: 1;
    transform: translateY(0);
}