/* =================================================================
   TEACHER DASHBOARD STYLES
   Bob and Mariel Ward School of Filipino Languages
   ================================================================= */

.module-teacher-dashboard {
    padding: var(--spacing-large);
    max-width: 1600px;
    margin: 0 auto;
}

/* Header */
.module-teacher-dashboard .dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-large);
    flex-wrap: wrap;
    gap: var(--spacing-base);
}

.module-teacher-dashboard .welcome-section h1 {
    margin: 0 0 0.25rem 0;
    font-size: 1.75rem;
    color: var(--text-primary);
}

.teacher-name {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* Class Stats */
.class-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--spacing-base);
    margin-bottom: var(--spacing-large);
}

.class-stats .stat-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-medium);
    padding: var(--spacing-base);
    text-align: center;
    border: 1px solid var(--border-color);
}

.class-stats .stat-card.warning {
    border-color: var(--warning);
    background: rgba(245, 158, 11, 0.05);
}

.class-stats .stat-card.warning i {
    color: var(--warning);
}

.class-stats .stat-card i {
    font-size: 1.5rem;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.class-stats .stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
}

.class-stats .stat-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
}

/* Dashboard Content */
.dashboard-content {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: var(--spacing-large);
}

/* Students Section */
.students-section {
    background: var(--bg-secondary);
    border-radius: var(--radius-medium);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-base) var(--spacing-large);
    border-bottom: 1px solid var(--border-color);
    flex-wrap: wrap;
    gap: var(--spacing-small);
}

.section-header h2 {
    margin: 0;
    font-size: 1.125rem;
}

.filter-controls {
    display: flex;
    gap: var(--spacing-small);
}

.filter-select {
    padding: 0.375rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-small);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.875rem;
}

/* Students Table */
.students-table-container {
    overflow-x: auto;
}

.students-table {
    width: 100%;
    border-collapse: collapse;
}

.students-table th,
.students-table td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.students-table th {
    background: var(--bg-tertiary);
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
}

.students-table tbody tr {
    cursor: pointer;
    transition: background 0.2s;
}

.students-table tbody tr:hover {
    background: var(--bg-tertiary);
}

.students-table tbody tr.struggling {
    background: rgba(239, 68, 68, 0.05);
}

.students-table tbody tr.struggling:hover {
    background: rgba(239, 68, 68, 0.1);
}

.student-name-cell {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.warning-icon {
    color: var(--warning);
    font-size: 0.875rem;
}

.language-badge-small {
    display: inline-block;
    padding: 0.125rem 0.5rem;
    background: var(--primary);
    color: white;
    border-radius: 10px;
    font-size: 0.75rem;
}

.progress-cell {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.mini-progress-bar {
    width: 60px;
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: 3px;
    position: relative;
}

.mini-progress-bar::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 100%;
    border-radius: 3px;
}

.mini-progress-bar.good::before {
    background: var(--secondary);
}

.mini-progress-bar.medium::before {
    background: var(--warning);
}

.mini-progress-bar.low::before {
    background: var(--error);
}

.btn-icon {
    background: none;
    border: none;
    padding: 0.375rem;
    cursor: pointer;
    color: var(--text-secondary);
    border-radius: var(--radius-small);
    transition: background 0.2s, color 0.2s;
}

.btn-icon:hover {
    background: var(--bg-tertiary);
    color: var(--primary);
}

.loading-row,
.empty-row {
    text-align: center;
    color: var(--text-secondary);
    padding: 2rem !important;
}

/* Student Detail Panel */
.student-detail-panel {
    background: var(--bg-secondary);
    border-radius: var(--radius-medium);
    border: 1px solid var(--border-color);
    height: fit-content;
    max-height: 80vh;
    overflow-y: auto;
}

.student-detail-panel.hidden {
    display: none;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-base) var(--spacing-large);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    background: var(--bg-secondary);
}

.panel-header h3 {
    margin: 0;
    font-size: 1.125rem;
}

.panel-body {
    padding: var(--spacing-large);
}

.student-info {
    margin-bottom: var(--spacing-large);
}

.info-row {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
}

.info-row .label {
    color: var(--text-secondary);
}

.info-row .value {
    font-weight: 500;
}

.panel-body h4 {
    margin: 0 0 var(--spacing-base) 0;
    font-size: 1rem;
    color: var(--text-secondary);
}

.lesson-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-base);
}

.lesson-detail-card {
    background: var(--bg-tertiary);
    border-radius: var(--radius-small);
    padding: var(--spacing-base);
}

.lesson-detail-card.completed {
    border-left: 3px solid var(--secondary);
}

.lesson-detail-card.in_progress {
    border-left: 3px solid var(--primary);
}

.lesson-detail-card.locked {
    opacity: 0.5;
}

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

.lesson-num {
    font-weight: 600;
}

.lesson-progress-badge {
    background: var(--primary);
    color: white;
    padding: 0.125rem 0.5rem;
    border-radius: 10px;
    font-size: 0.75rem;
    font-weight: 600;
}

.activities-detail {
    display: grid;
    gap: 0.25rem;
}

.activity-detail-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
}

.activity-detail-row.completed i {
    color: var(--secondary);
}

.activity-detail-row.pending i {
    color: var(--text-secondary);
}

.activity-detail-row .activity-name {
    flex: 1;
}

.activity-detail-row .activity-value {
    font-weight: 500;
    color: var(--text-secondary);
}

/* Add Student Modal */
.form-group {
    margin-bottom: var(--spacing-base);
}

.form-group label {
    display: block;
    margin-bottom: 0.375rem;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-small);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 1rem;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

/* Login Required */
.module-teacher-dashboard .login-required {
    text-align: center;
    padding: 4rem 2rem;
}

.module-teacher-dashboard .login-required i {
    font-size: 4rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.module-teacher-dashboard .login-required h2 {
    margin: 0 0 0.5rem 0;
}

.module-teacher-dashboard .login-required p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

/* Loading State */
.loading {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
}

.error {
    text-align: center;
    padding: 2rem;
    color: var(--error);
}

/* Responsive */
@media (max-width: 1200px) {
    .dashboard-content {
        grid-template-columns: 1fr;
    }

    .student-detail-panel {
        position: fixed;
        top: 0;
        right: 0;
        width: 100%;
        max-width: 450px;
        height: 100vh;
        max-height: 100vh;
        z-index: 1000;
        box-shadow: -4px 0 24px rgba(0, 0, 0, 0.2);
    }
}

@media (max-width: 768px) {
    .module-teacher-dashboard {
        padding: var(--spacing-base);
    }

    .module-teacher-dashboard .dashboard-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .module-teacher-dashboard .header-actions {
        width: 100%;
        flex-wrap: wrap;
    }

    .module-teacher-dashboard .header-actions .btn {
        flex: 1;
        min-width: 120px;
    }

    .class-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .filter-controls {
        width: 100%;
    }

    .filter-select {
        flex: 1;
    }

    .students-table th:nth-child(5),
    .students-table td:nth-child(5),
    .students-table th:nth-child(6),
    .students-table td:nth-child(6) {
        display: none;
    }

    .student-detail-panel {
        max-width: 100%;
    }
}

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

    .class-stats .stat-card {
        padding: 0.75rem;
    }

    .class-stats .stat-value {
        font-size: 1.25rem;
    }

    .students-table th:nth-child(3),
    .students-table td:nth-child(3),
    .students-table th:nth-child(4),
    .students-table td:nth-child(4) {
        display: none;
    }
}