/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;600;700&family=Source+Sans+Pro:wght@400;600&family=Nunito+Sans:wght@400;600;700&display=swap');

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #1e1b4b;  /* Forest Green */
    --secondary-color: #4338ca;  /* Emerald */
    --accent-color: #818cf8;  /* Light Emerald */
    --text-dark: #1e1b4b;  /* Dark Green for excellent readability */
    --text-light: #1e1b4b;  /* Forest Green for secondary text */
    --bg-light: #eef2ff;  /* Light Green Tint */
    --bg-white: #FFFFFF;
    --border-light: #c7d2fe;  /* Emerald borders/highlights */
    --shadow-light: 0 4px 6px rgba(67, 56, 202, 0.1);
    --shadow-medium: 0 10px 25px rgba(67, 56, 202, 0.15);
    --shadow-large: 0 20px 40px rgba(67, 56, 202, 0.1);
    
    /* Font Variables */
    --font-heading: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-body: 'Source Sans Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-accent: 'Nunito Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

body {
    font-family: var(--font-body);
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    min-height: 100vh;
    color: var(--text-dark);
    line-height: 1.6;
}

/* Navbar Styles */
.navbar {
    background: linear-gradient(90deg, var(--bg-light) 0%, rgba(238, 242, 255, 0.95) 100%);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-light);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-light);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-dark);
    font-family: var(--font-heading);
}

.logo-img {
    height: 50px;
    width: auto;
    object-fit: contain;
    display: block;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.nav-links a {
    color: var(--text-light);
    text-decoration: none;
    transition: all 0.3s ease;
    padding: 0.5rem;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav-links a:hover {
    background: linear-gradient(45deg, var(--secondary-color), var(--accent-color));
    color: white;
    transform: translateY(-2px);
}

.nav-name {
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--text-dark);
    padding: 0.5rem 1rem;
    background: linear-gradient(90deg, var(--bg-white) 0%, var(--bg-light) 100%);
    border-radius: 20px;
    border: 1px solid var(--border-light);
}

/* Main Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

/* Hero Section */
.hero {
    text-align: center;
    margin-bottom: 3rem;
    padding: 2rem 0;
}

.hero h1 {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: 1rem;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.hero p {
    font-family: var(--font-body);
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.9);
    max-width: 600px;
    margin: 0 auto;
}

/* Search Container */
.search-container {
    background: linear-gradient(135deg, var(--bg-light) 0%, rgba(255, 255, 255, 0.97) 100%);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: var(--shadow-large);
    margin-bottom: 2rem;
    border: 1px solid var(--border-light);
    backdrop-filter: blur(10px);
}

.search-box {
    position: relative;
    max-width: 600px;
    margin: 0 auto;
}

.search-input {
    font-family: var(--font-body);
    width: 100%;
    padding: 1.25rem 1.5rem 1.25rem 3.5rem;
    border: 2px solid var(--border-light);
    border-radius: 50px;
    font-size: 1.1rem;
    outline: none;
    transition: all 0.3s ease;
    background: linear-gradient(90deg, white 0%, var(--bg-light) 100%);
    color: var(--text-dark);
}

.search-input:focus {
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(67, 56, 202, 0.1);
    background: white;
}

.search-input::placeholder {
    font-family: var(--font-body);
    color: var(--text-light);
    opacity: 0.7;
}

.search-icon {
    position: absolute;
    left: 1.25rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.2rem;
    color: var(--text-light);
    opacity: 0.6;
}

/* Search Results */
.search-results {
    background: linear-gradient(135deg, var(--bg-light) 0%, white 100%);
    border-radius: 15px;
    padding: 1rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-medium);
    display: none;
    border: 1px solid var(--border-light);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.search-results.show {
    display: block;
    animation: fadeInUp 0.3s ease;
}

.search-results h3 {
    font-family: var(--font-heading);
    color: var(--text-dark);
    margin-bottom: 1rem;
    font-size: 1.1rem;
    font-weight: 600;
}

.search-result-item {
    font-family: var(--font-body);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    background: linear-gradient(90deg, white 0%, var(--bg-light) 100%);
    margin-bottom: 0.5rem;
    border: 1px solid transparent;
    font-weight: 500;
    color: var(--text-dark);
    font-size: 1rem;
}

.search-result-item:hover {
    background: linear-gradient(45deg, var(--secondary-color), var(--accent-color));
    color: white;
    transform: translateX(8px);
    box-shadow: var(--shadow-medium);
    border-color: var(--secondary-color);
}

.search-result-item:last-child {
    margin-bottom: 0;
}

.no-results {
    text-align: center;
    padding: 2rem;
    color: var(--text-light);
    background: linear-gradient(135deg, white 0%, var(--bg-light) 100%);
    border-radius: 10px;
    border: 1px solid var(--border-light);
}

.no-results p {
    font-family: var(--font-body);
    font-size: 1rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.no-results small {
    font-family: var(--font-body);
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.4;
}

/* Subjects Section */
.subjects-section {
    margin: 3rem 0;
}

.subjects-section h2 {
    font-family: var(--font-heading);
    color: white;
    text-align: center;
    margin-bottom: 2rem;
    font-size: 2rem;
    font-weight: 600;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.subjects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

/* Subject Card Styles */
.subject-card {
    background: linear-gradient(135deg, var(--bg-light) 0%, rgba(255, 255, 255, 0.97) 100%);
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-light);
}

.subject-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
    background: linear-gradient(135deg, white 0%, var(--bg-light) 100%);
    border-color: var(--accent-color);
}

.subject-card h3 {
    font-family: var(--font-heading);
    color: var(--text-dark);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.subject-card p {
    font-family: var(--font-body);
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.subject-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    color: white;
    font-size: 1.5rem;
}

.subject-stats {
    display: flex;
    justify-content: space-between;
    margin-top: 1rem;
}

.stat {
    text-align: center;
}

.stat-number {
    font-family: var(--font-accent);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--secondary-color);
    display: block;
}

.stat-label {
    font-family: var(--font-accent);
    color: var(--text-light);
    font-size: 0.8rem;
    text-transform: uppercase;
    font-weight: 600;
}

/* Engagement Footer Fix for Links */
.engagement-item a {
    text-decoration: none;
    color: inherit;
    display: block;
    width: 100%;
    height: 100%;
}

.engagement-item a:hover {
    text-decoration: none;
    color: inherit;
}

.engagement-item h3 {
    font-family: var(--font-heading);
    color: var(--text-dark);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
}

.engagement-item p {
    font-family: var(--font-body);
    color: var(--text-light);
    font-size: 0.9rem;
    text-decoration: none;
}

/* Engagement Footer */
.engagement-footer {
    background: linear-gradient(135deg, var(--bg-light) 0%, rgba(255, 255, 255, 0.97) 100%);
    border-radius: 20px;
    padding: 2.5rem 2rem;
    margin-top: 4rem;
    box-shadow: var(--shadow-large);
    border: 1px solid var(--border-light);
}

.engagement-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.engagement-item {
    text-align: center;
    padding: 1.5rem;
    background: linear-gradient(135deg, white 0%, var(--bg-light) 100%);
    border-radius: 15px;
    transition: all 0.3s ease;
    cursor: pointer;
    border: 1px solid var(--border-light);
}

.engagement-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
    border-color: var(--accent-color);
}

.engagement-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    color: white;
    font-size: 1.2rem;
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Loading Overlay Styles */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(67, 56, 202, 0.95) 0%, rgba(67, 56, 202, 0.9) 100%);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.loading-overlay.show {
    display: flex;
    animation: fadeIn 0.3s ease;
}

.loading-content {
    text-align: center;
    color: white;
    font-family: var(--font-body);
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

.loading-text {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.loading-subtext {
    font-family: var(--font-body);
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Enhanced subject card loading state */
.subject-card.loading {
    transform: scale(0.95);
    opacity: 0.7;
    pointer-events: none;
    position: relative;
}

.subject-card.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 30px;
    height: 30px;
    border: 3px solid rgba(67, 56, 202, 0.3);
    border-top: 3px solid var(--secondary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    transform: translate(-50%, -50%);
}

/* Mobile Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    .navbar {
        padding: 1rem;
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-links {
        gap: 1rem;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
        padding: 0 1rem;
    }
    
    .search-container {
        padding: 1.5rem;
        margin: 0 0 2rem 0;
    }
    
    .search-input {
        font-size: 1rem;
        padding: 1rem 1rem 1rem 3rem;
    }
    
    .search-results {
        margin: 0 0 2rem 0;
        max-width: none;
    }
    
    .search-result-item {
        font-size: 0.95rem;
        padding: 0.7rem 0.8rem;
    }
    
    .search-result-item:hover {
        transform: translateX(4px);
    }
    
    .subjects-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .subject-card {
        padding: 1.5rem;
    }
    
    .engagement-footer {
        padding: 2rem 1rem;
        margin-top: 3rem;
    }
    
    .engagement-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .engagement-item {
        padding: 1rem;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.75rem;
    }
    
    .subjects-section h2 {
        font-size: 1.5rem;
    }
    
    .search-input {
        padding: 0.875rem 0.875rem 0.875rem 2.5rem;
    }
    
    .search-icon {
        left: 1rem;
    }
    
    .subject-card h3 {
        font-size: 1.25rem;
    }
    
    .subject-icon {
        width: 50px;
        height: 50px;
        font-size: 1.25rem;
    }

}

/* Update Notification Styles - Add this to your style.css */
.update-notification {
    position: fixed;
    bottom: -300px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #1e1b4b 0%, #4338ca 100%);
    color: white;
    padding: 1.5rem 2rem;
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    z-index: 10000;
    transition: bottom 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    max-width: 500px;
    width: 90%;
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.update-notification.show {
    bottom: 30px;
}

.update-content {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.update-icon {
    font-size: 2rem;
    animation: rotate 2s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.update-text {
    flex: 1;
    min-width: 150px;
}

.update-text strong {
    display: block;
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}

.update-text p {
    margin: 0;
    font-size: 0.9rem;
    opacity: 0.9;
}

.update-btn, .dismiss-btn {
    padding: 0.6rem 1.2rem;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.update-btn {
    background: white;
    color: #1e1b4b;
}

.update-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 255, 255, 0.3);
}

.dismiss-btn {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.dismiss-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

@media (max-width: 600px) {
    .update-notification {
        padding: 1.25rem 1.5rem;
    }
    
    .update-content {
        gap: 0.75rem;
    }
    
    .update-icon {
        font-size: 1.5rem;
    }
    
    .update-text strong {
        font-size: 1rem;
    }
    
    .update-text p {
        font-size: 0.85rem;
    }
    
    .update-btn, .dismiss-btn {
        padding: 0.5rem 1rem;
        font-size: 0.85rem;
        flex: 1;
    }
}