/* Courses Page Specific Styles */

/* Page Header */
.page-header {
    background: linear-gradient(135deg, var(--primary-color), #3b82f6);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.page-header p {
    font-size: 1.125rem;
    opacity: 0.9;
}

/* Course Filter */
.course-filter {
    background: var(--light-color);
    padding: 2rem 0;
    border-bottom: 1px solid var(--border-color);
}

.filter-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.75rem 1.5rem;
    border: 2px solid var(--border-color);
    background: white;
    border-radius: 2rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 1rem;
}

.filter-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.filter-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* Courses List */
.courses-list {
    padding: 4rem 0;
}

.course-item {
    background: white;
    border-radius: 1rem;
    box-shadow: var(--shadow);
    margin-bottom: 3rem;
    overflow: hidden;
    transition: transform 0.3s;
}

.course-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.course-header {
    background: linear-gradient(135deg, var(--primary-color), #3b82f6);
    color: white;
    padding: 2rem;
    display: flex;
    align-items: center;
    gap: 2rem;
}

.course-icon {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.course-icon i {
    font-size: 2.5rem;
}

.course-title h2 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.course-badge {
    display: inline-block;
    background: var(--secondary-color);
    color: white;
    padding: 0.25rem 1rem;
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 500;
}

.course-body {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 2rem;
    padding: 2rem;
}

.course-info h3 {
    font-size: 1.5rem;
    color: var(--dark-color);
    margin-bottom: 1rem;
}

.course-info h4 {
    font-size: 1.125rem;
    color: var(--dark-color);
    margin: 2rem 0 1rem;
}

.course-curriculum {
    list-style: none;
    margin-bottom: 2rem;
}

.course-curriculum li {
    padding: 0.75rem 0;
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.course-curriculum i {
    color: var(--success-color);
    margin-top: 0.25rem;
}

/* Course Structure */
.course-structure {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin: 1.5rem 0;
}

.structure-item {
    display: flex;
    gap: 1rem;
    padding: 1rem;
    background: var(--light-color);
    border-radius: 0.5rem;
}

.structure-item i {
    font-size: 2rem;
    color: var(--primary-color);
}

.structure-item h5 {
    font-size: 1rem;
    color: var(--dark-color);
    margin-bottom: 0.25rem;
}

.structure-item p {
    font-size: 0.875rem;
    color: var(--text-color);
}

/* Career Grid */
.career-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin: 1.5rem 0;
}

.career-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: var(--light-color);
    border-radius: 0.5rem;
}

.career-item i {
    font-size: 1.5rem;
    color: var(--secondary-color);
}

/* Course Sidebar */
.course-sidebar {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.course-details-card,
.included-card {
    background: var(--light-color);
    border-radius: 1rem;
    padding: 2rem;
    border: 1px solid var(--border-color);
}

.course-details-card h4,
.included-card h4 {
    font-size: 1.25rem;
    color: var(--dark-color);
    margin-bottom: 1rem;
}

.details-list {
    list-style: none;
    margin-bottom: 1.5rem;
}

.details-list li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
}

.details-list li:last-child {
    border-bottom: none;
}

.detail-label {
    font-weight: 500;
    color: var(--text-color);
}

.detail-value {
    font-weight: 600;
    color: var(--dark-color);
}

.course-highlight {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem 0;
    margin-bottom: 1rem;
    border-top: 2px solid var(--primary-color);
    background: linear-gradient(135deg, #f8fafc, #fff);
}

.course-highlight i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.course-highlight span {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--dark-color);
}

.btn-block {
    width: 100%;
    text-align: center;
}

.included-list {
    list-style: none;
}

.included-list li {
    padding: 0.5rem 0;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.included-list i {
    color: var(--success-color);
}

/* Loader and Toast Styles */
.loader-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.loader {
    width: 50px;
    height: 50px;
    border: 5px solid #f3f3f3;
    border-top: 5px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--dark-color);
    color: white;
    padding: 1rem 2rem;
    border-radius: 0.5rem;
    transform: translateX(400px);
    transition: transform 0.3s;
    z-index: 9999;
}

.toast.show {
    transform: translateX(0);
}

.toast-success {
    background: var(--success-color);
}

.toast-error {
    background: #ef4444;
}

/* Form Error States */
input.error,
select.error,
textarea.error {
    border-color: #ef4444 !important;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .course-body {
        grid-template-columns: 1fr;
    }
    
    .course-sidebar {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 1.5rem;
    }
    
    .course-structure {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .course-header {
        flex-direction: column;
        text-align: center;
    }
    
    .course-title h2 {
        font-size: 1.5rem;
    }
    
    .course-sidebar {
        grid-template-columns: 1fr;
    }
    
    .filter-buttons {
        gap: 0.5rem;
    }
    
    .filter-btn {
        padding: 0.5rem 1rem;
        font-size: 0.875rem;
    }
    
    .career-grid {
        grid-template-columns: 1fr;
    }
    
    .course-highlight span {
        font-size: 1rem;
    }
}