/* Resources Styles with Blue/Green/White/Orange Theme */

/* Header */
.resources-header {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
    position: relative;
    overflow: hidden;
}

.resources-header::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 0 100 100"><rect x="10" y="10" width="20" height="30" fill="rgba(255,255,255,0.1)" rx="3"/><rect x="40" y="20" width="15" height="25" fill="rgba(255,255,255,0.1)" rx="2"/><rect x="70" y="15" width="18" height="28" fill="rgba(255,255,255,0.1)" rx="3"/></svg>');
    opacity: 0.3;
}

.resource-stats {
    border: 2px solid rgba(255,255,255,0.2);
    backdrop-filter: blur(10px);
}

/* Resource Type Cards */
.resource-type-card {
    border: none;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    position: relative;
}

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

.bg-gradient-blue {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
}

.bg-gradient-green {
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--secondary-green) 100%);
}

.bg-gradient-orange {
    background: linear-gradient(135deg, var(--primary-orange) 0%, var(--accent-orange) 100%);
}

.resource-icon {
    width: 80px;
    height: 80px;
    background: rgba(255,255,255,0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    font-size: 2rem;
}

.stat-number {
    font-size: 1.5rem;
    font-weight: bold;
    opacity: 0.9;
}

/* Subject Filter */
.subject-filter-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.filter-btn {
    background: white;
    border: 2px solid var(--light-gray);
    color: var(--text-dark);
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
    font-size: 0.9rem;
}

.filter-btn:hover {
    background: var(--light-background);
    border-color: var(--primary-blue);
    color: var(--primary-blue);
    transform: translateY(-2px);
}

.filter-btn.active {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-green) 100%);
    border-color: var(--primary-blue);
    color: white;
    box-shadow: 0 4px 15px rgba(34, 139, 202, 0.3);
}

/* Section Dividers */
.section-divider {
    position: relative;
    text-align: center;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0;
    position: relative;
    display: inline-block;
    padding: 0 2rem;
    background: white;
}

.section-divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent 0%, var(--light-gray) 20%, var(--light-gray) 80%, transparent 100%);
    z-index: -1;
}

/* Resource Cards */
.resource-card {
    border: none;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    opacity: 0;
    transform: translateY(30px);
    background: white;
}

.resource-card.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.resource-card:hover {
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.resource-card .card-header {
    border: none;
    padding: 1rem;
}

.resource-card .card-body {
    padding: 1.5rem;
}

/* Note Cards */
.note-card .card-header {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
}

/* Video Cards */
.video-card {
    position: relative;
}

.video-thumbnail {
    position: relative;
    height: 200px;
    overflow: hidden;
    background: var(--light-background);
}

.video-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.video-card:hover .video-thumbnail img {
    transform: scale(1.05);
}

.thumbnail-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 3rem;
}

.play-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 3rem;
    opacity: 0.8;
    transition: all 0.3s ease;
}

.video-card:hover .play-overlay {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.1);
}

.duration-badge {
    position: absolute;
    bottom: 10px;
    right: 10px;
    background: rgba(0,0,0,0.8);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

/* Resource Meta */
.resource-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.resource-stats {
    border-top: 1px solid var(--light-gray);
    padding-top: 0.75rem;
}

/* Premium Badge */
.premium-badge {
    background: linear-gradient(135deg, var(--accent-gold) 0%, var(--accent-orange) 100%);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(255, 193, 7, 0.3);
}

/* Buttons */
.btn-orange {
    background: linear-gradient(135deg, var(--primary-orange) 0%, var(--accent-orange) 100%);
    border: none;
    color: white;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.btn-orange:hover {
    background: linear-gradient(135deg, var(--accent-orange) 0%, var(--primary-orange) 100%);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(239, 119, 34, 0.3);
}

.btn-outline-orange {
    border: 2px solid var(--primary-orange);
    color: var(--primary-orange);
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    transition: all 0.3s ease;
}

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

/* Quick Tools Section */
.quick-tools-section {
    background: linear-gradient(135deg, var(--light-background) 0%, white 100%);
    border: 2px solid var(--light-gray);
}

.tool-link {
    text-decoration: none;
    display: block;
}

.tool-card {
    padding: 2rem 1rem;
    border-radius: 15px;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

.tool-card i {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    display: block;
}

.tool-card span {
    font-weight: 600;
    font-size: 0.9rem;
}

.bg-orange {
    background: linear-gradient(135deg, var(--primary-orange) 0%, var(--accent-orange) 100%) !important;
}

/* Badges */
.badge {
    font-weight: 600;
    font-size: 0.75rem;
    padding: 0.5rem 0.75rem;
    border-radius: 15px;
}

.text-navy {
    color: var(--accent-navy) !important;
}

/* Fade in animation */
.fade-in {
    animation: fadeInUp 0.6s ease forwards;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .resources-header {
        text-align: center;
    }
    
    .resource-stats {
        margin-top: 1rem;
    }
    
    .subject-filter-tabs {
        justify-content: center;
    }
    
    .filter-btn {
        padding: 0.5rem 1rem;
        font-size: 0.8rem;
    }
    
    .section-title {
        font-size: 1.5rem;
        padding: 0 1rem;
    }
    
    .resource-icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
    
    .stat-number {
        font-size: 1.25rem;
    }
    
    .video-thumbnail {
        height: 150px;
    }
    
    .play-overlay {
        font-size: 2rem;
    }
    
    .tool-card {
        padding: 1.5rem 1rem;
    }
    
    .tool-card i {
        font-size: 1.5rem;
    }
    
    .resource-card .card-body {
        padding: 1rem;
    }
}

/* Loading animation for filtered content */
.resource-card[style*="display: none"] {
    animation: fadeOut 0.3s ease;
}

@keyframes fadeOut {
    from {
        opacity: 1;
        transform: translateY(0);
    }
    to {
        opacity: 0;
        transform: translateY(-10px);
    }
}

/* Hover effects for premium content */
.premium-badge:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(255, 193, 7, 0.4);
}

/* Custom scrollbar */
.card-body::-webkit-scrollbar {
    width: 4px;
}

.card-body::-webkit-scrollbar-track {
    background: var(--light-background);
    border-radius: 2px;
}

.card-body::-webkit-scrollbar-thumb {
    background: var(--primary-blue);
    border-radius: 2px;
}

.card-body::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-blue);
}