/* HEFIS LMS - Enterprise Learning Management System */
/* Clean & Professional Design */

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary: #64748b;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --info: #06b6d4;
    --bg-light: #f8fafc;
    --bg-white: #ffffff;
    --border: #e2e8f0;
    --text: #1e293b;
    --text-muted: #94a3b8;
    --shadow: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-light);
    color: var(--text);
    line-height: 1.6;
}

/* ==================== LOGIN PAGE ==================== */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    background: linear-gradient(135deg, rgba(92, 64, 51, 0.85) 0%, rgba(139, 108, 76, 0.85) 100%),
                url('../background.jpg') center/cover no-repeat;
}

.login-wrapper {
    max-width: 480px;
    width: 100%;
    background: var(--bg-white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.2);
}

.login-card {
    padding: 3rem;
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.logo-image {
    max-width: 200px;
    height: auto;
    margin: 0 auto 1.5rem;
    display: block;
}

.login-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 0.5rem;
}

.login-header p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 0.5rem;
}

.form-control, .form-input, .form-select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border);
    border-radius: 10px;
    font-size: 0.95rem;
    transition: all 0.2s;
    background: var(--bg-white);
}

.form-control:focus, .form-input:focus, .form-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

.form-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-login {
    width: 100%;
    padding: 1rem 1.5rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.3s;
    margin-top: 1rem;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 24px rgba(37, 99, 235, 0.3);
}

.login-footer {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    margin-top: 2rem;
}

.demo-credentials {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

/* ==================== APP LAYOUT ==================== */
.app-layout {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 280px;
    background: var(--bg-white);
    border-right: 1px solid var(--border);
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    z-index: 100;
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border);
}

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

.sidebar-logo {
    height: 40px;
    width: auto;
}

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

.sidebar-nav {
    flex: 1;
    padding: 1rem 0;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    padding: 1rem 1.5rem;
    color: var(--secondary);
    text-decoration: none;
    transition: all 0.2s;
    cursor: pointer;
    border-left: 3px solid transparent;
}

.nav-item:hover {
    background: var(--bg-light);
    color: var(--primary);
}

.nav-item.active {
    background: #eff6ff;
    color: var(--primary);
    border-left-color: var(--primary);
    font-weight: 600;
}

.nav-item i {
    font-size: 1.125rem;
    width: 22px;
}

.sidebar-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    margin-bottom: 1rem;
}

.user-avatar {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 1rem;
}

.user-details .name {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text);
}

.user-details .role {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.btn-logout {
    width: 100%;
    padding: 0.75rem;
    background: var(--bg-light);
    border: 1px solid var(--border);
    color: var(--secondary);
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.2s;
}

.btn-logout:hover {
    background: var(--bg-white);
    border-color: var(--danger);
    color: var(--danger);
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 280px;
    padding: 2rem;
    width: calc(100% - 280px);
}

.page-section {
    width: 100%;
    max-width: 100%;
}

.page-header {
    margin-bottom: 2rem;
    width: 100%;
    max-width: 100%;
}

.page-title {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 0.25rem;
}

.page-subtitle {
    color: var(--text-muted);
    font-size: 1rem;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--bg-white);
    padding: 1.5rem;
    border-radius: 14px;
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 1.25rem;
    transition: all 0.2s;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.stat-icon {
    width: 64px;
    height: 64px;
    background: #eff6ff;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 1.75rem;
}

.stat-content .value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text);
    line-height: 1.2;
}

.stat-content .label {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

/* Cards */
.card {
    background: var(--bg-white);
    border-radius: 14px;
    border: 1px solid var(--border);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.card-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border);
    background: var(--bg-light);
}

.card-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.card-body {
    padding: 1.5rem;
    color: var(--text);
}

.card-body h4,
.card-body p,
.card-body td,
.card-body th,
.card-body code,
.card-body kbd {
    color: var(--text) !important;
}

/* Course Grid */
.course-grid {
    display: grid !important;
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 1.5rem;
    width: 100%;
    max-width: 100%;
}

.course-card {
    background: var(--bg-white);
    border-radius: 12px;
    border: 1px solid var(--border);
    overflow: hidden;
    transition: all 0.25s;
    cursor: pointer;
    display: flex !important;
    flex-direction: column;
    height: 100%;
    width: 100%;
}

.course-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    border-color: var(--primary);
}

.course-image {
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    width: 100%;
}

.course-image i {
    font-size: 4rem;
    color: rgba(255, 255, 255, 0.9);
}

.course-category-badge {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    padding: 0.35rem 0.85rem;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    color: #667eea;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.course-content {
    padding: 1.25rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    width: 100%;
}

.course-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 0.65rem;
    line-height: 1.4;
    width: 100%;
}

.course-description {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
    line-height: 1.5;
}

.course-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
    margin-top: auto;
    width: 100%;
}

.course-duration {
    color: var(--text-muted);
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

/* Course List */
.course-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

/* Category Section */
.category-section {
    margin-bottom: 2.5rem;
}

.category-title {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--border);
}

.category-title i {
    font-size: 1.5rem;
}

/* Category Colors */
.category-title[data-category="technical"],
.category-section[data-category="technical"] .category-title i {
    color: #3b82f6;
}
.category-section[data-category="technical"] .category-title {
    border-bottom-color: #3b82f6;
}

.category-title[data-category="safety"],
.category-section[data-category="safety"] .category-title i {
    color: #ef4444;
}
.category-section[data-category="safety"] .category-title {
    border-bottom-color: #ef4444;
}

.course-list-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-light);
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s;
}

.course-list-item:hover {
    background: var(--bg-white);
    box-shadow: var(--shadow);
}

/* Learning List */
.learning-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.learning-card {
    background: var(--bg-white);
    border-radius: 14px;
    border: 1px solid var(--border);
    padding: 1.5rem;
    display: flex;
    gap: 1.5rem;
    align-items: center;
    transition: all 0.2s;
}

.learning-card:hover {
    box-shadow: var(--shadow-md);
}

.learning-card-image {
    width: 120px;
    height: 80px;
    background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.learning-card-image i {
    font-size: 2rem;
    color: var(--primary);
}

.learning-card-content {
    flex: 1;
}

.learning-card-title {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 0.5rem;
}

.learning-card-progress {
    margin-top: 0.5rem;
}

.learning-card-actions {
    display: flex;
    gap: 0.5rem;
}

/* Competencies */
.competency-card {
    background: var(--bg-white);
    border-radius: 14px;
    border: 1px solid var(--border);
    padding: 1.5rem;
    text-align: center;
    transition: all 0.3s;
}

.competency-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.competency-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
}

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

.competency-name {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 0.5rem;
}

.competency-category {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.competency-level {
    height: 8px;
    background: var(--bg-light);
    border-radius: 4px;
    overflow: hidden;
}

.competency-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: 4px;
    transition: width 0.5s;
}

/* Tables */
.table {
    width: 100%;
    border-collapse: collapse;
}

.table th {
    padding: 1rem;
    text-align: left;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-muted);
    border-bottom: 2px solid var(--border);
}

.table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border);
    font-size: 0.9rem;
}

.table tr:last-child td {
    border-bottom: none;
}

.table tr:hover {
    background: var(--bg-light);
}

/* Buttons */
.btn {
    padding: 0.625rem 1.25rem;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s;
    border: none;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
}

.btn-secondary {
    background: var(--bg-light);
    color: var(--secondary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--bg-white);
}

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

.btn-danger {
    background: var(--danger);
    color: white;
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.8125rem;
}

.btn-lg {
    padding: 0.875rem 1.5rem;
    font-size: 1rem;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 0.375rem 0.75rem;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-success { background: #d1fae5; color: #059669; }
.badge-warning { background: #fef3c7; color: #d97706; }
.badge-primary { background: #dbeafe; color: #2563eb; }
.badge-secondary { background: #f1f5f9; color: #64748b; }
.badge-danger { background: #fee2e2; color: #dc2626; }

/* Progress */
.progress {
    height: 8px;
    background: var(--bg-light);
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: 4px;
    transition: width 0.3s;
}

/* Tabs */
.nav-tabs {
    display: flex;
    gap: 0.5rem;
    border-bottom: 2px solid var(--border);
}

.nav-tab {
    padding: 0.75rem 1.5rem;
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: all 0.2s;
}

.nav-tab:hover {
    color: var(--text);
}

.nav-tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

/* Modal */
.modal-content {
    border: none;
    border-radius: 16px;
}

.modal-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border);
}

.modal-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text);
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border);
    display: flex;
    gap: 0.75rem;
    justify-content: flex-end;
}

/* Accordion */
.accordion-item {
    border: 1px solid var(--border);
    border-radius: 10px;
    margin-bottom: 0.75rem;
    overflow: hidden;
}

.accordion-button {
    width: 100%;
    padding: 1rem 1.25rem;
    background: var(--bg-white);
    border: none;
    text-align: left;
    font-weight: 600;
    color: var(--text);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.accordion-button:hover {
    background: var(--bg-light);
}

.accordion-body {
    padding: 1.25rem;
    background: var(--bg-light);
}

/* Activity List */
.activity-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.activity-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    background: var(--bg-light);
    border-radius: 8px;
    font-size: 0.875rem;
}

.activity-icon {
    width: 36px;
    height: 36px;
    background: var(--bg-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
}

/* Filters */
.filters {
    background: var(--bg-white);
    padding: 1rem;
    border-radius: 10px;
    border: 1px solid var(--border);
    width: 100%;
    max-width: 100%;
}

/* Course Detail */
.course-detail-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 2rem;
    border-radius: 14px;
    margin-bottom: 2rem;
}

.course-detail-header h1 {
    color: white;
}

.course-detail-header p {
    color: rgba(255,255,255,0.9);
}

/* Responsive */
@media (max-width: 1024px) {
    .main-content {
        margin-left: 0;
        padding: 1rem;
        width: 100%;
    }
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s;
    }
    .sidebar.active {
        transform: translateX(0);
    }
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .course-grid {
        grid-template-columns: repeat(2, 1fr) !important;
    }
}

@media (max-width: 992px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    .course-grid {
        grid-template-columns: repeat(2, 1fr) !important;
    }
}

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    .course-grid {
        grid-template-columns: 1fr !important;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    .course-grid {
        grid-template-columns: 1fr !important;
    }
}

/* Utility */
.news-and-courses-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.news-item {
    background: var(--bg-white);
    border-radius: 12px;
    border: 1px solid var(--border);
    padding: 1.25rem;
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    transition: all 0.2s;
}

.news-item:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}

.news-item.priority-urgent {
    border-left: 4px solid #ef4444;
    background: #fef2f2;
}

.news-item.priority-high {
    border-left: 4px solid #f59e0b;
    background: #fffbeb;
}

.news-item.priority-normal {
    border-left: 4px solid var(--primary);
}

.news-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.news-content {
    flex: 1;
}

.news-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 0.5rem;
}

.news-message {
    color: var(--text-muted);
    font-size: 0.925rem;
    line-height: 1.6;
    margin-bottom: 0.5rem;
}

.news-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.news-author {
    display: flex;
    align-items: center;
    gap: 0.375rem;
}

.news-date {
    display: flex;
    align-items: center;
    gap: 0.375rem;
}

.course-item-card {
    background: var(--bg-white);
    border-radius: 12px;
    border: 1px solid var(--border);
    padding: 1.25rem;
    display: flex;
    gap: 1rem;
    align-items: center;
    cursor: pointer;
    transition: all 0.2s;
}

.course-item-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}

.course-item-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 1.25rem;
    flex-shrink: 0;
}

.course-item-content {
    flex: 1;
}

.course-item-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 0.25rem;
}

.course-item-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.d-none { display: none !important; }
.text-muted { color: var(--text-muted) !important; }
.text-primary { color: var(--primary) !important; }
.text-center { text-align: center !important; }
.mb-1 { margin-bottom: 0.5rem !important; }
.mb-2 { margin-bottom: 1rem !important; }
.mb-3 { margin-bottom: 1.5rem !important; }
.mb-4 { margin-bottom: 2rem !important; }
.mt-2 { margin-top: 1rem !important; }
.mt-3 { margin-top: 1.5rem !important; }
.mt-4 { margin-top: 2rem !important; }
.small { font-size: 0.875rem !important; }
.fs-5 { font-size: 1.125rem !important; }

/* Full Instruction Styles */
.full-instruction {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 12px;
    line-height: 1.8;
}

.full-instruction h2 {
    color: var(--primary);
    font-weight: 700;
    text-transform: uppercase;
}

.full-instruction h3.section-title {
    color: var(--primary-dark);
    font-weight: 700;
    margin-top: 2rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--border);
}

.full-instruction h4.subsection-title {
    color: var(--primary);
    font-weight: 600;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

.instruction-content {
    background: var(--bg-light);
    padding: 1.5rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
}

.instruction-content p {
    margin-bottom: 1rem;
}

.instruction-content ul {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
}

.instruction-content li {
    margin-bottom: 0.5rem;
}

/* Alerts */
.alert {
    padding: 1rem 1.25rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.alert i {
    font-size: 1.25rem;
    margin-top: 0.125rem;
}

.alert-info {
    background: #dbeafe;
    color: #1e40af;
    border-left: 4px solid #2563eb;
}

.alert-warning {
    background: #fef3c7;
    color: #92400e;
    border-left: 4px solid #f59e0b;
}

.alert-danger {
    background: #fee2e2;
    color: #991b1b;
    border-left: 4px solid #ef4444;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border-left: 4px solid #10b981;
}

/* Course Detail Header */
.course-detail-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 2rem;
    border-radius: 14px;
    margin-bottom: 2rem;
}

.course-detail-header h1 {
    color: white;
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
}

.course-detail-header p {
    color: rgba(255,255,255,0.9);
}

/* Accordion */
.accordion-item {
    border: 1px solid var(--border);
    border-radius: 10px;
    margin-bottom: 0.75rem;
    overflow: hidden;
}

.accordion-button {
    width: 100%;
    padding: 1rem 1.25rem;
    background: var(--bg-white);
    border: none;
    text-align: left;
    font-weight: 600;
    color: var(--text);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.accordion-button:hover {
    background: var(--bg-light);
}

.accordion-button:not(.collapsed) {
    background: #eff6ff;
    color: var(--primary);
}

.accordion-body {
    padding: 1.25rem;
    background: var(--bg-light);
}