/* Changelog applied: // FIX M2 */
/**
 * Custom LMS – Instructor Dashboard CSS
 * Matches student dashboard design system (Poppins, CSS vars, .lms-app wrapper)
 * SaaS sidebar layout, fully responsive
 */

/* ═══════════════════════════════════════════════════════════════════
   LAYOUT: APP SHELL
   ═══════════════════════════════════════════════════════════════════ */
.clms-instructor-app {
    display: flex;
    min-height: 100vh;
    background: var(--lms-bg, #F5F1E8);
    font-family: var(--lms-font, 'Poppins', sans-serif);
    position: relative;
}

/* ═══════════════════════════════════════════════════════════════════
   SIDEBAR
   ═══════════════════════════════════════════════════════════════════ */
.clms-inst-sidebar {
    width: 260px;
    min-width: 260px;
    background: var(--lms-dark, #1C1F4A);
    display: flex;
    flex-direction: column;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
    z-index: 100;
    transition: transform 0.3s ease;
    scrollbar-width: thin;
    scrollbar-color: rgba(255,255,255,0.1) transparent;
}

.clms-inst-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 24px 20px 20px;
    font-size: 17px;
    font-weight: 700;
    color: #fff;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    letter-spacing: -0.3px;
}

.clms-inst-brand i {
    font-size: 20px;
    color: var(--lms-accent, #F5B400);
}

/* ── Navigation ──────────────────────────────────────────────────── */
.clms-inst-nav {
    flex: 1;
    padding: 14px 12px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.clms-inst-nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    color: rgba(255,255,255,0.68);
    text-decoration: none !important;
    border-radius: 10px;
    font-size: 13.5px;
    font-weight: 500;
    transition: all 0.2s;
    cursor: pointer;
    white-space: nowrap;
}

.clms-inst-nav-item:hover {
    background: rgba(255,255,255,0.08);
    color: #fff;
    text-decoration: none !important;
}

.clms-inst-nav-item.active {
    background: var(--lms-primary, #2E3192);
    color: #fff;
    box-shadow: 0 4px 14px rgba(46,49,146,0.4);
}

.clms-inst-nav-item i {
    font-size: 14px;
    width: 18px;
    text-align: center;
    flex-shrink: 0;
}

.clms-inst-nav-divider {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    color: rgba(255,255,255,0.3);
    padding: 12px 14px 4px;
}

/* ── Sidebar footer ──────────────────────────────────────────────── */
.clms-inst-sidebar-footer {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 16px;
    border-top: 1px solid rgba(255,255,255,0.08);
}

.clms-inst-user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
    min-width: 0;
}

.clms-inst-user-info img {
    border-radius: 50%;
    border: 2px solid rgba(255,255,255,0.15);
    flex-shrink: 0;
}

.clms-inst-user-info div {
    min-width: 0;
}

.clms-inst-user-info strong {
    display: block;
    font-size: 13px;
    color: #fff;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.clms-inst-user-info span {
    font-size: 11px;
    color: rgba(255,255,255,0.45);
}

.clms-inst-logout {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 8px;
    background: rgba(255,255,255,0.07);
    color: rgba(255,255,255,0.6);
    text-decoration: none !important;
    transition: all 0.2s;
    flex-shrink: 0;
}

.clms-inst-logout:hover {
    background: rgba(239,68,68,0.2);
    color: #EF4444;
}

/* ═══════════════════════════════════════════════════════════════════
   MAIN CONTENT
   ═══════════════════════════════════════════════════════════════════ */
.clms-inst-main {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
}

.clms-inst-content {
    flex: 1;
    padding: 32px;
    max-width: 1200px;
    width: 100%;
}

/* ── Mobile header ───────────────────────────────────────────────── */
.clms-inst-mobile-header {
    display: none;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
    background: var(--lms-dark, #1C1F4A);
    position: sticky;
    top: 0;
    z-index: 90;
}

.clms-inst-menu-toggle {
    background: none;
    border: none;
    color: #fff;
    font-size: 20px;
    cursor: pointer;
    padding: 4px;
    display: flex;
    align-items: center;
}

.clms-inst-mobile-title {
    flex: 1;
    color: #fff;
    font-size: 15px;
    font-weight: 600;
}

.clms-inst-logout-mobile {
    color: rgba(255,255,255,0.7);
    font-size: 17px;
    text-decoration: none;
}

/* ── Sidebar overlay (mobile) ────────────────────────────────────── */
.clms-inst-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 99;
}

/* ═══════════════════════════════════════════════════════════════════
   SECTION HEADER
   ═══════════════════════════════════════════════════════════════════ */
.clms-inst-section-header {
    margin-bottom: 24px;
}

.clms-inst-section-header h2 {
    font-size: 22px;
    font-weight: 700;
    color: var(--lms-dark, #1C1F4A);
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 0 0 4px;
}

.clms-inst-section-header h2 i {
    color: var(--lms-primary, #2E3192);
    font-size: 20px;
}

.clms-inst-section-sub {
    font-size: 13.5px;
    color: var(--lms-muted, #6B7280);
    margin: 0;
}

/* ═══════════════════════════════════════════════════════════════════
   STATS GRID
   ═══════════════════════════════════════════════════════════════════ */
.clms-inst-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 16px;
}

.clms-inst-stat-card {
    background: var(--lms-white, #fff);
    border-radius: var(--lms-radius, 16px);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 14px;
    box-shadow: var(--lms-shadow-sm);
    cursor: pointer;
    transition: all 0.2s;
    border: 1.5px solid transparent;
}

.clms-inst-stat-card:hover {
    box-shadow: var(--lms-shadow);
    transform: translateY(-2px);
    border-color: var(--lms-primary, #2E3192);
}

.clms-inst-stat-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.clms-inst-stat-icon i {
    font-size: 18px;
    color: #fff;
}

.clms-bg-primary  { background: var(--lms-primary, #2E3192); }
.clms-bg-teal     { background: #0D9488; }
.clms-bg-indigo   { background: #4F46E5; }
.clms-bg-violet   { background: #7C3AED; }
.clms-bg-amber    { background: #D97706; }
.clms-bg-rose     { background: #E11D48; }

.clms-inst-stat-body {
    display: flex;
    flex-direction: column;
}

.clms-inst-stat-num {
    font-size: 26px;
    font-weight: 800;
    color: var(--lms-dark, #1C1F4A);
    line-height: 1;
}

.clms-inst-stat-label {
    font-size: 12px;
    color: var(--lms-muted, #6B7280);
    font-weight: 500;
    margin-top: 2px;
}

/* ═══════════════════════════════════════════════════════════════════
   CARDS
   ═══════════════════════════════════════════════════════════════════ */
.clms-inst-card {
    background: #fff;
    border-radius: var(--lms-radius, 16px);
    box-shadow: var(--lms-shadow-sm);
    overflow: hidden;
}

.clms-inst-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 16px 20px;
    border-bottom: 1.5px solid var(--lms-border, rgba(46,49,146,0.08));
}

.clms-inst-card-header h3 {
    font-size: 15px;
    font-weight: 700;
    color: var(--lms-dark, #1C1F4A);
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0;
}

.clms-inst-card-header h3 i {
    color: var(--lms-primary, #2E3192);
}

.clms-inst-card-body {
    padding: 20px;
}

.clms-collapsible-header {
    cursor: pointer;
    user-select: none;
}

.clms-collapsible-header:hover {
    background: var(--lms-primary-lt, #EEF0FF);
}

.clms-collapse-icon {
    color: var(--lms-muted, #6B7280);
    transition: transform 0.2s;
    font-size: 13px;
}

.clms-collapse-icon.open {
    transform: rotate(180deg);
}

/* ═══════════════════════════════════════════════════════════════════
   QUICK ACTIONS GRID
   ═══════════════════════════════════════════════════════════════════ */
.clms-inst-quick-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 12px;
    padding: 16px 20px 20px;
}

.clms-inst-quick-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 16px 12px;
    background: var(--lms-primary-lt, #EEF0FF);
    border: 1.5px solid rgba(46,49,146,0.15);
    border-radius: var(--lms-radius-sm, 12px);
    color: var(--lms-primary, #2E3192);
    font-family: var(--lms-font);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-align: center;
}

.clms-inst-quick-btn:hover {
    background: var(--lms-primary, #2E3192);
    color: #fff;
    border-color: var(--lms-primary);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(46,49,146,0.25);
}

.clms-inst-quick-btn i {
    font-size: 22px;
}

/* ═══════════════════════════════════════════════════════════════════
   BUTTONS
   ═══════════════════════════════════════════════════════════════════ */
.clms-inst-btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 10px 20px;
    border-radius: 10px;
    font-family: var(--lms-font);
    font-size: 13.5px;
    font-weight: 600;
    cursor: pointer;
    border: 1.5px solid transparent;
    transition: all 0.2s;
    text-decoration: none !important;
    white-space: nowrap;
}

.clms-inst-btn-sm {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 6px 12px;
    border-radius: 8px;
    font-family: var(--lms-font);
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    border: 1.5px solid transparent;
    transition: all 0.2s;
    text-decoration: none !important;
    white-space: nowrap;
}

.clms-btn-primary {
    background: var(--lms-primary, #2E3192);
    color: #fff;
    border-color: var(--lms-primary);
}
.clms-btn-primary:hover {
    background: var(--lms-primary-dk, #232680);
    color: #fff;
    box-shadow: 0 4px 14px rgba(46,49,146,0.3);
}

.clms-btn-secondary {
    background: var(--lms-primary-lt, #EEF0FF);
    color: var(--lms-primary, #2E3192);
    border-color: rgba(46,49,146,0.2);
}
.clms-btn-secondary:hover {
    background: var(--lms-primary, #2E3192);
    color: #fff;
}

.clms-btn-success {
    background: #D1FAE5;
    color: #065F46;
    border-color: #6EE7B7;
}
.clms-btn-success:hover {
    background: #10B981;
    color: #fff;
    border-color: #10B981;
}

.clms-btn-danger {
    background: #FEF2F2;
    color: var(--lms-danger, #EF4444);
    border-color: #FECACA;
}
.clms-btn-danger:hover {
    background: var(--lms-danger, #EF4444);
    color: #fff;
    border-color: var(--lms-danger);
}

.clms-btn-outline {
    background: transparent;
    color: var(--lms-primary, #2E3192);
    border-color: rgba(46,49,146,0.3);
}
.clms-btn-outline:hover {
    background: var(--lms-primary-lt, #EEF0FF);
}

.clms-btn-ghost {
    background: transparent;
    color: var(--lms-muted, #6B7280);
    border-color: transparent;
}
.clms-btn-ghost:hover {
    background: #F3F4F6;
}

/* ═══════════════════════════════════════════════════════════════════
   BADGES
   ═══════════════════════════════════════════════════════════════════ */
.clms-inst-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    border-radius: 999px;
    font-size: 11.5px;
    font-weight: 600;
    background: var(--lms-primary-lt, #EEF0FF);
    color: var(--lms-primary, #2E3192);
}

.clms-badge-success { background: #D1FAE5; color: #065F46; }
.clms-badge-warning { background: #FEF3C7; color: #92400E; }
.clms-badge-danger  { background: #FEF2F2; color: #991B1B; }
.clms-badge-info    { background: #E0F2FE; color: #075985; }

/* ═══════════════════════════════════════════════════════════════════
   FORMS
   ═══════════════════════════════════════════════════════════════════ */
.clms-inst-form {
    width: 100%;
}

.clms-inst-form-row {
    display: grid;
    gap: 16px;
    margin-bottom: 16px;
}

.clms-cols-2 { grid-template-columns: repeat(2, 1fr); }
.clms-cols-3 { grid-template-columns: repeat(3, 1fr); }

.clms-inst-form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.clms-inst-form-group label {
    font-size: 13px;
    font-weight: 600;
    color: var(--lms-dark, #1C1F4A);
}

.clms-inst-form-group .req {
    color: var(--lms-danger, #EF4444);
    margin-left: 2px;
}

.clms-inst-form-group input,
.clms-inst-form-group select,
.clms-inst-form-group textarea {
    padding: 10px 14px;
    border: 1.5px solid rgba(46,49,146,0.18);
    border-radius: 10px;
    font-family: var(--lms-font);
    font-size: 13.5px;
    color: var(--lms-text, #1A1A1A);
    background: #fff;
    transition: border-color 0.2s, box-shadow 0.2s;
    outline: none;
    width: 100%;
}

.clms-inst-form-group input:focus,
.clms-inst-form-group select:focus,
.clms-inst-form-group textarea:focus {
    border-color: var(--lms-primary, #2E3192);
    box-shadow: 0 0 0 3px rgba(46,49,146,0.1);
}

.clms-inst-form-group textarea {
    resize: vertical;
    min-height: 90px;
}

.clms-inst-form-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 8px;
}

.clms-inst-inline-form {
    margin: 0;
}

.clms-inst-inline-form select {
    padding: 6px 10px;
    border: 1.5px solid rgba(46,49,146,0.18);
    border-radius: 8px;
    font-family: var(--lms-font);
    font-size: 12px;
    cursor: pointer;
}

/* ── URL field with browse button ────────────────────────────────── */
.clms-inst-url-field {
    display: flex;
    gap: 8px;
}

.clms-inst-url-field input {
    flex: 1;
}

/* ═══════════════════════════════════════════════════════════════════
   TABLES
   ═══════════════════════════════════════════════════════════════════ */
.clms-inst-table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.clms-inst-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.clms-inst-table thead tr {
    background: var(--lms-primary-lt, #EEF0FF);
}

.clms-inst-table th {
    padding: 11px 14px;
    text-align: left;
    font-size: 12px;
    font-weight: 700;
    color: var(--lms-primary, #2E3192);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.clms-inst-table td {
    padding: 12px 14px;
    border-bottom: 1px solid var(--lms-border, rgba(46,49,146,0.08));
    color: var(--lms-text, #1A1A1A);
    vertical-align: middle;
}

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

.clms-inst-table tbody tr:hover {
    background: rgba(46,49,146,0.02);
}

.clms-inst-actions {
    display: flex;
    gap: 6px;
    flex-wrap: nowrap;
    align-items: center;
}

.clms-inst-table-actions {
    display: flex;
    gap: 8px;
    align-items: center;
}

/* ═══════════════════════════════════════════════════════════════════
   NOTICES
   ═══════════════════════════════════════════════════════════════════ */
.clms-inst-notice {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 13px 18px;
    border-radius: 10px;
    font-size: 13.5px;
    font-weight: 500;
    margin-bottom: 18px;
}

.clms-inst-notice.success {
    background: #D1FAE5;
    color: #065F46;
    border: 1.5px solid #6EE7B7;
}

.clms-inst-notice.warning {
    background: #FEF3C7;
    color: #92400E;
    border: 1.5px solid #FCD34D;
}

.clms-inst-notice.error {
    background: #FEF2F2;
    color: #991B1B;
    border: 1.5px solid #FECACA;
}

/* ═══════════════════════════════════════════════════════════════════
   EMPTY STATE
   ═══════════════════════════════════════════════════════════════════ */
.clms-inst-empty {
    text-align: center;
    padding: 50px 24px;
    color: var(--lms-muted, #6B7280);
}

.clms-inst-empty i {
    font-size: 40px;
    display: block;
    margin-bottom: 12px;
    opacity: 0.35;
}

.clms-inst-empty p {
    font-size: 14px;
    margin: 0;
}

/* ═══════════════════════════════════════════════════════════════════
   MISC HELPERS
   ═══════════════════════════════════════════════════════════════════ */
.clms-inst-muted {
    color: var(--lms-muted, #6B7280);
    font-size: 12.5px;
}

.clms-inst-select-sm {
    padding: 5px 10px;
    border: 1.5px solid rgba(46,49,146,0.18);
    border-radius: 8px;
    font-family: var(--lms-font);
    font-size: 12.5px;
    cursor: pointer;
}

.clms-inst-filter-bar {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 4px;
}

.clms-inst-filter-form {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    font-weight: 600;
    color: var(--lms-dark);
}

.clms-inst-filter-form select {
    padding: 7px 12px;
    border: 1.5px solid rgba(46,49,146,0.18);
    border-radius: 8px;
    font-family: var(--lms-font);
    font-size: 13px;
    cursor: pointer;
}

.clms-inst-result-count {
    font-size: 12.5px;
    color: var(--lms-muted);
    margin-left: auto;
}

/* ── Two column layout ───────────────────────────────────────────── */
.clms-inst-two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 20px;
}

/* ── Code block ──────────────────────────────────────────────────── */
.clms-inst-code-block {
    background: #F8F8FC;
    border: 1.5px solid rgba(46,49,146,0.12);
    border-radius: 8px;
    padding: 12px 14px;
    font-family: 'Courier New', monospace;
    font-size: 12.5px;
    color: var(--lms-dark);
    margin: 8px 0;
    line-height: 1.7;
}

/* ── Tip list ────────────────────────────────────────────────────── */
.clms-inst-tip-list {
    list-style: none;
    padding: 0;
    margin: 12px 0 0;
    display: flex;
    flex-direction: column;
    gap: 7px;
}

.clms-inst-tip-list li {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: 13px;
    color: var(--lms-text);
}

.clms-inst-tip-list li i {
    color: var(--lms-success, #10B981);
    margin-top: 1px;
    flex-shrink: 0;
}

/* ═══════════════════════════════════════════════════════════════════
   BULK UPLOAD AREA
   ═══════════════════════════════════════════════════════════════════ */
.clms-inst-upload-area {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 36px 24px;
    border: 2.5px dashed rgba(46,49,146,0.25);
    border-radius: 14px;
    background: var(--lms-primary-lt, #EEF0FF);
    cursor: pointer;
    transition: all 0.2s;
    position: relative;
    text-align: center;
}

.clms-inst-upload-area:hover,
.clms-inst-upload-area.drag-over {
    border-color: var(--lms-primary, #2E3192);
    background: rgba(46,49,146,0.06);
}

.clms-inst-upload-area i {
    font-size: 40px;
    color: var(--lms-primary, #2E3192);
}

.clms-inst-upload-area p {
    font-size: 14px;
    color: var(--lms-muted);
    margin: 0;
}

.clms-inst-upload-area input[type="file"] {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
    width: 100%;
    height: 100%;
}

.clms-inst-file-name {
    font-size: 12.5px;
    color: var(--lms-primary, #2E3192);
    font-weight: 600;
}

/* ═══════════════════════════════════════════════════════════════════
   ANNOUNCEMENTS
   ═══════════════════════════════════════════════════════════════════ */
.clms-inst-announcement-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.clms-inst-announce-item {
    padding: 18px 20px;
    border-bottom: 1px solid var(--lms-border, rgba(46,49,146,0.08));
}

.clms-inst-announce-item:last-child {
    border-bottom: none;
}

.clms-inst-announce-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 10px;
}

.clms-inst-announce-header h4 {
    font-size: 14.5px;
    font-weight: 700;
    color: var(--lms-dark);
    margin: 0 0 6px;
}

.clms-inst-announce-header > div {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
}

.clms-inst-announce-body {
    font-size: 13.5px;
    color: var(--lms-text);
    line-height: 1.6;
    padding: 10px 14px;
    background: #F9FAFB;
    border-radius: 8px;
}

/* ═══════════════════════════════════════════════════════════════════
   DOUBTS
   ═══════════════════════════════════════════════════════════════════ */
.clms-inst-tab-bar {
    display: flex;
    gap: 4px;
    margin-bottom: 20px;
    border-bottom: 2px solid var(--lms-border);
}

.clms-inst-tab {
    padding: 10px 18px;
    font-size: 13.5px;
    font-weight: 600;
    color: var(--lms-muted, #6B7280);
    text-decoration: none !important;
    border-bottom: 2.5px solid transparent;
    margin-bottom: -2px;
    display: flex;
    align-items: center;
    gap: 7px;
    transition: all 0.2s;
}

.clms-inst-tab:hover {
    color: var(--lms-primary, #2E3192);
}

.clms-inst-tab.active {
    color: var(--lms-primary, #2E3192);
    border-bottom-color: var(--lms-primary, #2E3192);
}

.clms-inst-doubt-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.clms-inst-doubt-item {
    background: #fff;
    border-radius: var(--lms-radius, 16px);
    box-shadow: var(--lms-shadow-sm);
    padding: 18px 20px;
    border-left: 4px solid transparent;
}

.clms-inst-doubt-item.pending {
    border-left-color: var(--lms-danger, #EF4444);
}

.clms-inst-doubt-item.answered {
    border-left-color: var(--lms-success, #10B981);
}

.clms-inst-doubt-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.clms-inst-doubt-avatar img {
    border-radius: 50%;
    border: 2px solid var(--lms-border);
}

.clms-inst-doubt-question {
    font-size: 14px;
    color: var(--lms-text);
    padding: 12px 14px;
    background: #F9FAFB;
    border-radius: 10px;
    line-height: 1.6;
    margin-bottom: 14px;
}

.clms-inst-doubt-replies {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 14px;
    padding-left: 16px;
    border-left: 3px solid var(--lms-success, #10B981);
}

.clms-inst-doubt-reply {
    background: #F0FDF4;
    border-radius: 8px;
    padding: 10px 14px;
}

.clms-inst-reply-meta {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12.5px;
    margin-bottom: 5px;
}

.clms-inst-reply-meta i {
    color: var(--lms-success, #10B981);
    font-size: 11px;
}

.clms-inst-doubt-reply p {
    font-size: 13.5px;
    color: var(--lms-text);
    margin: 0;
    line-height: 1.5;
}

.clms-inst-reply-input-wrap {
    display: flex;
    gap: 10px;
    align-items: flex-end;
}

.clms-inst-reply-input-wrap textarea {
    flex: 1;
    padding: 10px 14px;
    border: 1.5px solid rgba(46,49,146,0.18);
    border-radius: 10px;
    font-family: var(--lms-font);
    font-size: 13px;
    resize: none;
    outline: none;
}

.clms-inst-reply-input-wrap textarea:focus {
    border-color: var(--lms-primary, #2E3192);
    box-shadow: 0 0 0 3px rgba(46,49,146,0.1);
}

/* ── Loading spinner ──────────────────────────────────────────────── */
.clms-inst-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px;
    gap: 14px;
    color: var(--lms-muted);
    font-size: 14px;
}

.clms-inst-spinner {
    width: 36px;
    height: 36px;
    border: 3px solid var(--lms-primary-lt);
    border-top-color: var(--lms-primary, #2E3192);
    border-radius: 50%;
    animation: clmsInstSpin 0.7s linear infinite;
}

@keyframes clmsInstSpin {
    to { transform: rotate(360deg); }
}

/* ═══════════════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════════════ */
@media (max-width: 960px) {
    .clms-inst-sidebar {
        position: fixed;
        left: 0;
        top: 0;
        bottom: 0;
        transform: translateX(-100%);
        z-index: 200;
    }

    .clms-inst-sidebar.open {
        transform: translateX(0);
        box-shadow: 4px 0 24px rgba(0,0,0,0.2);
    }

    .clms-inst-overlay.open {
        display: block;
    }

    .clms-inst-mobile-header {
        display: flex;
    }

    .clms-inst-content {
        padding: 20px;
    }

    .clms-cols-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .clms-inst-stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .clms-inst-quick-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .clms-cols-2,
    .clms-cols-3 {
        grid-template-columns: 1fr;
    }

    .clms-inst-two-col {
        grid-template-columns: 1fr;
    }

    .clms-inst-content {
        padding: 16px;
    }

    .clms-inst-card-header {
        flex-wrap: wrap;
        gap: 8px;
    }

    .clms-inst-doubt-meta {
        flex-wrap: wrap;
    }

    .clms-inst-reply-input-wrap {
        flex-direction: column;
    }

    .clms-inst-actions {
        flex-wrap: wrap;
    }
}

/* ═══════════════════════════════════════════════════════════════════
   SIDEBAR LINK COLOR FIX (override theme styles)
   ═══════════════════════════════════════════════════════════════════ */
.clms-instructor-app .clms-inst-sidebar a,
.clms-instructor-app .clms-inst-sidebar a:link,
.clms-instructor-app .clms-inst-sidebar a:visited,
.clms-instructor-app .clms-inst-nav-item,
.clms-instructor-app .clms-inst-nav a {
    color: rgba(255, 255, 255, 0.72) !important;
    text-decoration: none !important;
}

.clms-instructor-app .clms-inst-nav-item:hover,
.clms-instructor-app .clms-inst-sidebar a:hover {
    color: #ffffff !important;
    text-decoration: none !important;
}

.clms-instructor-app .clms-inst-nav-item.active,
.clms-instructor-app .clms-inst-nav-item.active:hover {
    color: #ffffff !important;
    text-decoration: none !important;
}

/* Loading state */
.clms-inst-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px;
    gap: 14px;
    color: var(--lms-muted, #6B7280);
    font-size: 14px;
}

.clms-inst-spinner {
    width: 36px;
    height: 36px;
    border: 3px solid rgba(46,49,146,0.15);
    border-top-color: var(--lms-primary, #2E3192);
    border-radius: 50%;
    animation: clmsInstSpin 0.7s linear infinite;
}

@keyframes clmsInstSpin { to { transform: rotate(360deg); } }

/* Notice area */
.clms-inst-notice-area { min-height: 0; }

/* Form group textarea used standalone (announcements) */
.clms-inst-section .clms-inst-form-group textarea {
    display: block;
    width: 100%;
    padding: 10px 14px;
    border: 1.5px solid rgba(46,49,146,0.18);
    border-radius: 10px;
    font-family: var(--lms-font, 'Poppins', sans-serif);
    font-size: 13.5px;
    resize: vertical;
    min-height: 90px;
    outline: none;
}

.clms-inst-section .clms-inst-form-group textarea:focus {
    border-color: var(--lms-primary, #2E3192);
    box-shadow: 0 0 0 3px rgba(46,49,146,0.1);
}

/* FIX M2: Screen-reader-only utility class for visually hidden labels */
.clms-sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ════════════════════════════════════════════════════════════════
   STUDENT SEARCH & FILTER BAR  (v5.1)
   ════════════════════════════════════════════════════════════════ */

/* Filter card — slightly different accent so it stands out */
.clms-student-filter-card .clms-inst-card-header {
    background: linear-gradient(135deg, #EEF2FF 0%, #E0E7FF 100%);
    border-bottom: 1px solid #C7D2FE;
}
.clms-student-filter-card .clms-inst-card-header h3 {
    color: #3730A3;
}

/* Row layout for the filter controls */
.clms-student-filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    align-items: flex-end;
}

/* Each label + control group */
.clms-filter-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
    flex: 1 1 180px;
    min-width: 160px;
}

.clms-filter-group label {
    font-size: .78rem;
    font-weight: 600;
    color: #374151;
    letter-spacing: .02em;
    display: flex;
    align-items: center;
    gap: 5px;
    white-space: nowrap;
}
.clms-filter-group label i {
    color: #6366F1;
    font-size: .75rem;
}

/* Search input */
.clms-filter-input {
    width: 100%;
    padding: 9px 12px 9px 36px;
    border: 1px solid #D1D5DB;
    border-radius: 8px;
    font-size: .88rem;
    color: #111827;
    background: #fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%236B7280' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='11' cy='11' r='8'/%3E%3Cpath d='M21 21l-4.35-4.35'/%3E%3C/svg%3E") no-repeat 11px center;
    transition: border-color .2s, box-shadow .2s;
    box-sizing: border-box;
}
.clms-filter-input:focus {
    outline: none;
    border-color: #6366F1;
    box-shadow: 0 0 0 3px rgba(99,102,241,.12);
}
.clms-filter-input::placeholder {
    color: #9CA3AF;
}

/* Select dropdowns */
.clms-filter-select {
    width: 100%;
    padding: 9px 32px 9px 12px;
    border: 1px solid #D1D5DB;
    border-radius: 8px;
    font-size: .88rem;
    color: #111827;
    background: #fff;
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236B7280' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    cursor: pointer;
    transition: border-color .2s, box-shadow .2s;
    box-sizing: border-box;
}
.clms-filter-select:focus {
    outline: none;
    border-color: #6366F1;
    box-shadow: 0 0 0 3px rgba(99,102,241,.12);
}

/* Wider search box */
.clms-filter-search {
    flex: 2 1 240px;
}

/* Button row group */
.clms-filter-actions {
    flex: 0 0 auto;
    min-width: auto;
}
.clms-filter-btn-row {
    display: flex;
    gap: 8px;
    align-items: center;
}
.clms-filter-btn-row .clms-inst-btn {
    white-space: nowrap;
}

/* Loading overlay inside the table wrap */
.clms-inst-table-wrap {
    position: relative; /* needed for overlay positioning */
}
.clms-filter-loading {
    position: absolute;
    inset: 0;
    background: rgba(255,255,255,.80);
    backdrop-filter: blur(2px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    z-index: 10;
    border-radius: 0 0 10px 10px;
    font-size: .88rem;
    color: #6B7280;
    font-weight: 500;
}

/* ── Responsive: stack on small screens ─────────────────────── */
@media (max-width: 640px) {
    .clms-student-filter-bar {
        flex-direction: column;
        gap: 12px;
    }
    .clms-filter-group,
    .clms-filter-search,
    .clms-filter-actions {
        flex: 1 1 100%;
        min-width: 0;
    }
    .clms-filter-btn-row {
        width: 100%;
    }
    .clms-filter-btn-row .clms-inst-btn {
        flex: 1;
        justify-content: center;
    }
}
/* ================================================================
   PAGINATION BAR  — clms-pagination-bar
   ================================================================ */
.clms-pagination-bar {
    padding: 14px 20px;
    border-top: 1px solid #EEF0FF;
    background: #FAFBFF;
    border-radius: 0 0 12px 12px;
}
.clms-pg-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
}
.clms-pg-info {
    font-size: .82rem;
    color: #6B7280;
    white-space: nowrap;
}
.clms-pg-btns {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-wrap: wrap;
}
.clms-pg-btn {
    min-width: 34px;
    height: 34px;
    padding: 0 10px;
    border: 1.5px solid #D1D5DB;
    background: #fff;
    color: #374151;
    border-radius: 8px;
    font-size: .85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all .15s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}
.clms-pg-btn:hover:not(.disabled):not(.active) {
    border-color: #2E3192;
    color: #2E3192;
    background: #EEF0FF;
}
.clms-pg-btn.active {
    background: #2E3192;
    border-color: #2E3192;
    color: #fff;
    cursor: default;
}
.clms-pg-btn.disabled {
    opacity: .4;
    cursor: not-allowed;
}
.clms-pg-ellipsis {
    padding: 0 4px;
    color: #9CA3AF;
    font-size: .9rem;
    line-height: 34px;
}

/* ================================================================
   EMPTY STATE
   ================================================================ */
.clms-inst-empty {
    text-align: center;
    padding: 48px 20px;
    color: #9CA3AF;
}
.clms-inst-empty i {
    font-size: 2.5rem;
    margin-bottom: 12px;
    display: block;
    opacity: .5;
}
.clms-inst-empty p {
    margin: 0;
    font-size: .95rem;
}

/* ================================================================
   LOADING SPINNER
   ================================================================ */
.clms-inst-loading {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 32px 20px;
    color: #6B7280;
    font-size: .9rem;
}
.clms-inst-spinner {
    width: 22px;
    height: 22px;
    border: 3px solid #EEF0FF;
    border-top-color: #2E3192;
    border-radius: 50%;
    animation: clmsSpin .7s linear infinite;
    flex-shrink: 0;
}
@keyframes clmsSpin {
    to { transform: rotate(360deg); }
}

/* ================================================================
   LESSON SEARCH BAR  (re-uses card but no extra wrapper needed)
   ================================================================ */
#clmsLessonSearch:focus {
    border-color: #2E3192;
    outline: none;
    box-shadow: 0 0 0 3px rgba(46,49,146,.1);
}

/* ================================================================
   BADGE VARIANTS
   ================================================================ */
.clms-badge-success {
    background: #D1FAE5 !important;
    color: #065F46 !important;
}
.clms-badge-warning {
    background: #FEF3C7 !important;
    color: #92400E !important;
}
.clms-badge-info {
    background: #EEF0FF !important;
    color: #2E3192 !important;
}

/* ================================================================
   STUDENT FILTER BAR (responsive)
   ================================================================ */
.clms-student-filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    align-items: flex-end;
}
.clms-filter-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    flex: 1;
    min-width: 160px;
}
.clms-filter-group label {
    font-size: .82rem;
    font-weight: 600;
    color: #374151;
    white-space: nowrap;
}
.clms-filter-group.clms-filter-search { flex: 2; min-width: 220px; }
.clms-filter-input,
.clms-filter-select {
    padding: 9px 12px;
    border: 1.5px solid #D1D5DB;
    border-radius: 8px;
    font-size: .9rem;
    width: 100%;
    box-sizing: border-box;
    background: #fff;
    color: #1C1F4A;
    transition: border-color .15s;
}
.clms-filter-input:focus,
.clms-filter-select:focus {
    border-color: #2E3192;
    outline: none;
    box-shadow: 0 0 0 3px rgba(46,49,146,.1);
}
.clms-filter-btn-row {
    display: flex;
    gap: 8px;
}
.clms-filter-loading {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 20px;
    color: #6B7280;
    font-size: .88rem;
}

/* ================================================================
   RESPONSIVE ADJUSTMENTS
   ================================================================ */
@media (max-width: 640px) {
    .clms-pg-inner {
        flex-direction: column;
        align-items: flex-start;
    }
    .clms-student-filter-bar {
        flex-direction: column;
    }
    .clms-filter-group { min-width: 100%; }
    .clms-filter-btn-row { flex-direction: column; }
    .clms-filter-btn-row .clms-inst-btn { width: 100%; justify-content: center; }
}

/* ================================================================
   PAGINATION ENGINE — clms-pagination-bar
   ================================================================ */
.clms-pagination-bar {
    padding: 16px 20px;
    border-top: 1px solid #E5E7EB;
    background: #FAFAFA;
    border-radius: 0 0 12px 12px;
}
.clms-pg-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}
.clms-pg-info {
    font-size: .82rem;
    color: #6B7280;
    white-space: nowrap;
}
.clms-pg-btns {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-wrap: wrap;
}
.clms-pg-btn {
    min-width: 34px;
    height: 34px;
    padding: 0 10px;
    border: 1.5px solid #D1D5DB;
    background: #fff;
    border-radius: 7px;
    font-size: .85rem;
    font-weight: 600;
    color: #374151;
    cursor: pointer;
    transition: all .15s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}
.clms-pg-btn:hover:not(.disabled):not(.active) {
    background: #EEF0FF;
    border-color: #7C83F7;
    color: #2E3192;
}
.clms-pg-btn.active {
    background: #2E3192;
    border-color: #2E3192;
    color: #fff;
    cursor: default;
    box-shadow: 0 2px 6px rgba(46,49,146,.35);
}
.clms-pg-btn.disabled {
    opacity: .4;
    cursor: not-allowed;
}
.clms-pg-ellipsis {
    font-size: .9rem;
    color: #9CA3AF;
    padding: 0 4px;
    user-select: none;
}

/* ================================================================
   EMPTY STATE
   ================================================================ */
.clms-inst-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 48px 24px;
    color: #9CA3AF;
    gap: 12px;
}
.clms-inst-empty i { font-size: 2.4rem; opacity: .45; }
.clms-inst-empty p { margin: 0; font-size: .95rem; font-weight: 500; }

/* ================================================================
   LOADING SPINNER (if not already defined)
   ================================================================ */
.clms-inst-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 40px 24px;
    color: #6B7280;
    font-size: .9rem;
}
.clms-inst-spinner {
    width: 22px;
    height: 22px;
    border: 3px solid #E5E7EB;
    border-top-color: #2E3192;
    border-radius: 50%;
    animation: clmsSpin .65s linear infinite;
    flex-shrink: 0;
}
@keyframes clmsSpin { to { transform: rotate(360deg); } }

/* ================================================================
   LESSON SEARCH BAR TWEAKS
   ================================================================ */
#clmsLessonSearch:focus {
    outline: none;
    border-color: #7C83F7;
    box-shadow: 0 0 0 3px rgba(124,131,247,.15);
}

/* ================================================================
   STUDENT FILTER BAR
   ================================================================ */
.clms-student-filter-bar {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    align-items: flex-end;
}
.clms-filter-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
    flex: 1;
    min-width: 160px;
}
.clms-filter-group label {
    font-size: .82rem;
    font-weight: 600;
    color: #374151;
    white-space: nowrap;
}
.clms-filter-group.clms-filter-search { flex: 2; }
.clms-filter-group.clms-filter-actions { flex: 0 0 auto; min-width: auto; }
.clms-filter-input,
.clms-filter-select {
    padding: 9px 12px;
    border: 1.5px solid #D1D5DB;
    border-radius: 8px;
    font-size: .9rem;
    color: #1F2937;
    background: #fff;
    transition: border-color .15s;
    box-sizing: border-box;
    width: 100%;
}
.clms-filter-input:focus,
.clms-filter-select:focus {
    outline: none;
    border-color: #7C83F7;
    box-shadow: 0 0 0 3px rgba(124,131,247,.15);
}
.clms-filter-btn-row {
    display: flex;
    gap: 8px;
}

/* ================================================================
   RESPONSIVE ADJUSTMENTS
   ================================================================ */
@media (max-width: 600px) {
    .clms-pg-inner { flex-direction: column; align-items: flex-start; }
    .clms-pg-btns { flex-wrap: wrap; }
    .clms-pg-btn { min-width: 30px; height: 30px; font-size: .78rem; }
    .clms-student-filter-bar { flex-direction: column; }
    .clms-filter-group { min-width: 100%; }
    .clms-filter-group.clms-filter-actions { width: 100%; }
    .clms-filter-btn-row { width: 100%; }
    .clms-filter-btn-row .clms-inst-btn { flex: 1; justify-content: center; }
}