/* Modern Design System Tokens */
:root {
    --bg-main: #f4f7f6;
    --bg-sidebar: #1e293b;
    --text-main: #334155;
    --text-light: #94a3b8;
    --accent-color: #3b82f6;
    --accent-hover: #2563eb;
    --white: #ffffff;
    --border-color: #e2e8f0;
    
    --font-family: 'Inter', sans-serif;
    --sidebar-width: 260px;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.6;
}

/* Layout */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--bg-sidebar);
    color: var(--white);
    display: flex;
    flex-direction: column;
    transition: width 0.3s ease;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}

.sidebar-header {
    padding: 2rem 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    padding: 1.5rem 0;
}

.nav-item {
    padding: 1rem 1.5rem;
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s ease;
    border-left: 3px solid transparent;
}

.nav-item:hover, .nav-item.active {
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--white);
    border-left-color: var(--accent-color);
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.top-header {
    background-color: var(--white);
    padding: 1rem 2rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-title h1 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-main);
}

.top-navbar {
    display: flex;
    align-items: center;
}

.user-profile-menu {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.9rem;
}

.user-welcome {
    color: var(--text-main);
    font-weight: 500;
}

.user-welcome .username {
    font-weight: 700;
    color: var(--accent-color);
}

.user-role-badge {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.25rem 0.6rem;
    border-radius: 9999px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.user-role-badge.role-admin {
    background-color: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.user-role-badge.role-ontwikkelaar {
    background-color: rgba(245, 158, 11, 0.1);
    color: #d97706;
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.user-role-badge.role-docent {
    background-color: rgba(59, 130, 246, 0.1);
    color: #2563eb;
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border-left: 1px solid var(--border-color);
    padding-left: 1rem;
    margin-left: 0.5rem;
}

.nav-action-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 0.8rem;
    border-radius: 6px;
    font-weight: 500;
    text-decoration: none;
    font-size: 0.85rem;
    transition: all 0.2s ease;
    border: 1px solid transparent;
    background: transparent;
    color: var(--text-main);
    cursor: pointer;
    font-family: var(--font-family);
}

.nav-action-btn svg {
    stroke-width: 2px;
}

.nav-action-btn:hover {
    background-color: var(--bg-main);
}

.nav-action-btn.profile-link:hover {
    color: var(--accent-color);
    border-color: rgba(59, 130, 246, 0.2);
}

.nav-action-btn.admin-link {
    color: #475569;
}

.nav-action-btn.admin-link:hover {
    color: #0f172a;
    background-color: #f1f5f9;
    border-color: #cbd5e1;
}

.nav-action-btn.logout-btn {
    color: #94a3b8;
}

.nav-action-btn.logout-btn:hover {
    color: #ef4444;
    background-color: rgba(239, 68, 68, 0.05);
    border-color: rgba(239, 68, 68, 0.1);
}

.logout-form {
    display: inline;
}

.content-body {
    padding: 2rem;
    flex: 1;
}

/* Utility classes for Glassmorphism & Cards */
.card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.025);
}

/* Eindtermen Overview specific */
.filters-bar {
    margin-bottom: 2rem;
    padding: 1rem 1.5rem;
}

.search-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-family: var(--font-family);
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s ease;
}

.search-input:focus {
    border-color: var(--accent-color);
}

.category-section {
    margin-bottom: 3rem;
}

.category-title {
    font-size: 1.25rem;
    color: var(--text-main);
    margin-bottom: 1rem;
    border-bottom: 2px solid var(--accent-color);
    display: inline-block;
    padding-bottom: 0.25rem;
}

.eindtermen-grid {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.eindterm-card {
    padding: 1rem 1.5rem;
    cursor: pointer;
}

/* We undo the hover translate for details element to prevent jitter when open */
details.eindterm-card:hover {
    transform: none;
}

.eindterm-summary {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-weight: 600;
    list-style: none; /* Hide default arrow */
    outline: none;
}

.eindterm-summary::-webkit-details-marker {
    display: none;
}

.et-id {
    color: var(--text-light);
    font-size: 0.85rem;
    background: #e2e8f0;
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    white-space: nowrap;
}

.et-title {
    flex: 1;
}

.et-badge {
    font-size: 0.75rem;
    background-color: var(--accent-color);
    color: white;
    padding: 0.2rem 0.5rem;
    border-radius: 12px;
}

.eindterm-details {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    color: var(--text-main);
    animation: fadeInDown 0.3s ease-out;
}

.detail-section h4 {
    font-size: 0.95rem;
    color: var(--text-light);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.detail-section ul {
    list-style-type: disc;
    padding-left: 1.5rem;
}

.detail-section li {
    margin-bottom: 0.3rem;
}

/* Forms and Upload */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-main);
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-family: var(--font-family);
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s ease;
}

.form-input:focus {
    border-color: var(--accent-color);
}

.form-row {
    display: flex;
    gap: 1rem;
}
.form-row .form-group {
    flex: 1;
}

.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    font-family: var(--font-family);
    transition: background-color 0.2s ease, transform 0.1s ease;
}

.btn:active {
    transform: scale(0.98);
}

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

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

.btn-secondary {
    background-color: #e2e8f0;
    color: var(--text-main);
}

.btn-secondary:hover {
    background-color: #cbd5e1;
}

.error-text {
    color: #ef4444;
    font-size: 0.85rem;
    margin-top: 0.5rem;
}

/* Drag and Drop Zone */
.drop-zone {
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    padding: 3rem 2rem;
    text-align: center;
    color: var(--text-light);
    cursor: pointer;
    transition: all 0.3s ease;
    background-color: rgba(255,255,255,0.5);
    margin-bottom: 1rem;
}

.drop-zone:hover, .drop-zone.dragover {
    border-color: var(--accent-color);
    background-color: rgba(59, 130, 246, 0.05);
    color: var(--accent-color);
}

.file-list {
    list-style: none;
    padding: 0;
}

.file-list li {
    background: white;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}

.action-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

/* Eindtermen Dekking (Coverage) Specific Styles */
.coverage-summary {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
    align-items: center;
    flex-wrap: wrap;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(255, 255, 255, 0.8));
}

.summary-stat {
    display: flex;
    flex-direction: column;
    min-width: 120px;
}

.stat-value {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--text-main);
    line-height: 1;
    margin-bottom: 0.25rem;
}

.text-success {
    color: #10b981 !important;
}

.text-danger {
    color: #f43f5e !important;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-light);
    font-weight: 500;
}

.summary-progress {
    flex: 1;
    min-width: 250px;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.progress-info {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    color: var(--text-main);
}

.progress-bar-container {
    height: 10px;
    background-color: #e2e8f0;
    border-radius: 9999px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-color), #10b981);
    border-radius: 9999px;
    transition: width 1s ease-in-out;
}

/* Filter buttons on coverage page */
.filters-container {
    display: flex;
    gap: 1.5rem;
    align-items: center;
    width: 100%;
    flex-wrap: wrap;
}

.filters-container .search-input {
    flex: 1;
    min-width: 200px;
}

.filter-buttons {
    display: flex;
    gap: 0.5rem;
}

.filter-btn {
    padding: 0.6rem 1.2rem;
    border: 1px solid var(--border-color);
    background-color: var(--white);
    color: var(--text-main);
    border-radius: 8px;
    font-weight: 500;
    cursor: pointer;
    font-family: var(--font-family);
    transition: all 0.2s ease;
}

.filter-btn:hover {
    background-color: var(--bg-main);
    border-color: var(--text-light);
}

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

/* Coverage Grid */
.coverage-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
}

.coverage-card {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    border-left: 4px solid transparent;
    min-height: 160px;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.coverage-card.covered {
    border-left-color: #10b981;
    cursor: pointer;
}

.coverage-card.uncovered {
    border-left-color: #f43f5e;
    opacity: 0.85;
}

.coverage-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.75rem;
    gap: 0.5rem;
}

.coverage-card-title {
    font-size: 0.95rem;
    font-weight: 400;
    color: var(--text-main);
    margin-bottom: auto;
    display: -webkit-box;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.coverage-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1rem;
    padding-top: 0.75rem;
    border-top: 1px dashed var(--border-color);
    font-size: 0.8rem;
    color: var(--text-light);
}

.coverage-badge {
    font-size: 0.75rem;
    padding: 0.2rem 0.6rem;
    border-radius: 12px;
    font-weight: 600;
}

.coverage-badge.badge-covered {
    background-color: rgba(16, 185, 129, 0.1);
    color: #047857;
}

.coverage-badge.badge-uncovered {
    background-color: rgba(244, 63, 94, 0.1);
    color: #be123c;
}

/* Modal styles */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeIn 0.2s ease-out;
}

.modal-content {
    background-color: var(--white);
    padding: 2rem;
    border-radius: 12px;
    width: 90%;
    max-width: 500px;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    position: relative;
    border: 1px solid var(--border-color);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.modal-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
}

.close-modal {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--text-light);
    cursor: pointer;
    transition: color 0.2s;
}

.close-modal:hover {
    color: var(--text-main);
}

.modal-subheader {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}

.modal-list {
    list-style: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.modal-item-link {
    display: block;
    padding: 0.75rem 1rem;
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    text-decoration: none;
    color: var(--text-main);
    font-weight: 500;
    transition: all 0.2s ease;
}

.modal-item-link:hover {
    border-color: var(--accent-color);
    background-color: rgba(59, 130, 246, 0.05);
    color: var(--accent-hover);
    transform: translateX(4px);
}

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

/* Login Page Specific Styles */
.login-body {
    background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-container {
    width: 100%;
    max-width: 440px;
    padding: 1.5rem;
}

.login-card {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: 16px;
    padding: 2.5rem;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.05), 0 10px 10px -5px rgba(0, 0, 0, 0.02);
}

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

.login-header h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 0.5rem;
}

.login-header p {
    color: var(--text-light);
    font-size: 0.9rem;
}

.btn-block {
    width: 100%;
    display: block;
    margin-top: 1.5rem;
    padding: 0.85rem 1.5rem;
    font-size: 0.95rem;
}

.alert {
    padding: 0.75rem 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    font-size: 0.85rem;
    font-weight: 500;
}

.alert-danger {
    background-color: rgba(239, 68, 68, 0.1);
    color: #b91c1c;
    border: 1px solid rgba(239, 68, 68, 0.2);
}