/* ═══════════════════════════════════════════════════════════════════
   CNS Scholarship Exam System — Stylesheet v1.0
   ═══════════════════════════════════════════════════════════════════ */

/* ── Variables ────────────────────────────────────────────────────── */
.cns-se-wrap {
    --cns-primary:    #6d28d9;
    --cns-primary-lt: #ede9fe;
    --cns-success:    #10b981;
    --cns-warning:    #f59e0b;
    --cns-danger:     #ef4444;
    --cns-info:       #0ea5e9;
    --cns-text:       #0f172a;
    --cns-text-sec:   #475569;
    --cns-muted:      #94a3b8;
    --cns-border:     #e2e8f0;
    --cns-bg:         #f8fafc;
    --cns-card:       #ffffff;
    --cns-radius:     12px;
    --cns-radius-sm:  8px;
    --cns-shadow:     0 4px 16px rgba(0,0,0,.06);

    font-family: 'Inter', 'Noto Sans Bengali', 'Hind Siliguri', Arial, sans-serif;
    color: var(--cns-text);
    line-height: 1.7;
    box-sizing: border-box;
    max-width: 100%;
}
.cns-se-wrap *, .cns-se-wrap *::before, .cns-se-wrap *::after {
    box-sizing: inherit;
}

/* ── Layout Cards ─────────────────────────────────────────────────── */
.cns-se-section-card {
    background: var(--cns-card);
    border: 1px solid var(--cns-border);
    border-radius: var(--cns-radius);
    padding: 24px;
    margin-bottom: 20px;
    box-shadow: var(--cns-shadow);
}
.cns-se-section-card h3 {
    margin: 0 0 18px;
    font-size: 17px;
    font-weight: 700;
    color: var(--cns-text);
    display: flex;
    align-items: center;
    gap: 8px;
}

/* ── Admin Header ─────────────────────────────────────────────────── */
.cns-se-admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(135deg, #f5f3ff, #ede9fe);
    color: #1e1b4b;
    border-radius: var(--cns-radius);
    border: 1px solid #c4b5fd;
    padding: 22px 28px;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 14px;
}
.cns-se-admin-header-left { display: flex; align-items: center; gap: 16px; }
.cns-se-admin-logo {
    width: 48px; height: 48px;
    background: rgba(109,40,217,.12);
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    font-size: 22px;
}
.cns-se-admin-header h1 { margin: 0; font-size: 20px; font-weight: 800; color: #1e1b4b; }
.cns-se-admin-header p  { margin: 4px 0 0; font-size: 13px; color: #5b21b6; opacity: 1; }

/* ── Tabs ─────────────────────────────────────────────────────────── */
.cns-se-tabs {
    display: flex;
    gap: 4px;
    border-bottom: 2px solid var(--cns-border);
    margin-bottom: 24px;
    overflow-x: auto;
    scrollbar-width: none;
}
.cns-se-tabs::-webkit-scrollbar { display: none; }
.cns-se-tab {
    white-space: nowrap;
    padding: 11px 20px;
    text-decoration: none;
    color: var(--cns-text-sec);
    font-weight: 600;
    font-size: 14px;
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
    border-radius: 8px 8px 0 0;
    display: flex; align-items: center; gap: 7px;
    transition: all .2s;
}
.cns-se-tab:hover { color: var(--cns-primary); background: var(--cns-primary-lt); }
.cns-se-tab.active { color: var(--cns-primary); border-bottom-color: var(--cns-primary); background: var(--cns-primary-lt); }
.cns-se-tab-content { min-height: 200px; }

/* ── Buttons ──────────────────────────────────────────────────────── */
.cns-se-btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 11px 20px;
    border: none; border-radius: var(--cns-radius-sm);
    font-size: 14px; font-weight: 700;
    cursor: pointer; text-decoration: none;
    transition: all .2s;
}
.cns-se-btn:hover { transform: translateY(-1px); }
.cns-se-btn:active { transform: translateY(0); }
.cns-se-btn-primary   { background: var(--cns-primary); color: #fff; }
.cns-se-btn-primary:hover { background: #5b21b6; color: #fff; }
.cns-se-btn-success   { background: var(--cns-success); color: #fff; }
.cns-se-btn-success:hover { background: #059669; color: #fff; }
.cns-se-btn-warning   { background: var(--cns-warning); color: #000; }
.cns-se-btn-warning:hover { background: #d97706; color: #000; }
.cns-se-btn-danger    { background: var(--cns-danger); color: #fff; }
.cns-se-btn-danger:hover { background: #dc2626; color: #fff; }
.cns-se-btn-secondary { background: #fff; color: #475569; border: 1.5px solid #cbd5e1; }
.cns-se-btn-secondary:hover { background: #f1f5f9; color: #1e293b; border-color: #94a3b8; }
.cns-se-btn-sm { padding: 7px 14px; font-size: 13px; border-radius: 6px; }

/* ── Badges ───────────────────────────────────────────────────────── */
.cns-se-badge {
    display: inline-flex; align-items: center; gap: 5px;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px; font-weight: 700;
}
.cns-se-badge-purple { background: #ede9fe; color: #6d28d9; }
.cns-se-badge-blue   { background: #e0f2fe; color: #0369a1; }
.cns-se-badge-green  { background: #dcfce7; color: #166534; }
.cns-se-badge-gray   { background: #f1f5f9; color: #475569; }
.cns-se-badge-status-live     { background: #dcfce7; color: #166534; border: 1px solid #86efac; }
.cns-se-badge-status-upcoming { background: #fef3c7; color: #92400e; border: 1px solid #fde68a; }
.cns-se-badge-status-ended    { background: #fee2e2; color: #991b1b; border: 1px solid #fca5a5; }
.cns-se-badge-status-disabled { background: #f1f5f9; color: #64748b; border: 1px solid #cbd5e1; }

/* ── Notices ──────────────────────────────────────────────────────── */
.cns-se-notice {
    display: flex; align-items: flex-start; gap: 14px;
    padding: 16px 20px;
    border-radius: var(--cns-radius-sm);
    font-size: 14px;
    border: 1px solid;
}
.cns-se-notice i { font-size: 20px; margin-top: 2px; flex-shrink: 0; }
.cns-se-notice p { margin: 4px 0 0; }
.cns-se-notice strong { display: block; font-size: 15px; margin-bottom: 2px; }
.cns-se-notice-success { background: #ecfdf5; color: #065f46; border-color: #a7f3d0; }
.cns-se-notice-error   { background: #fef2f2; color: #991b1b; border-color: #fecaca; }
.cns-se-notice-warning { background: #fffbeb; color: #92400e; border-color: #fde68a; }

/* ── Forms ────────────────────────────────────────────────────────── */
.cns-se-form { max-width: 900px; }
.cns-se-form-group { margin-bottom: 18px; }
.cns-se-form-group label {
    display: block; font-weight: 700; color: var(--cns-text-sec);
    font-size: 13px; margin-bottom: 7px; text-transform: uppercase; letter-spacing: .3px;
}
.cns-se-form-group input[type="text"],
.cns-se-form-group input[type="number"],
.cns-se-form-group input[type="password"],
.cns-se-form-group input[type="datetime-local"],
.cns-se-form-group select,
.cns-se-form-group textarea {
    width: 100%;
    padding: 11px 14px;
    border: 1.5px solid var(--cns-border);
    border-radius: var(--cns-radius-sm);
    font-size: 14px;
    color: var(--cns-text);
    background: #fff;
    transition: border-color .2s, box-shadow .2s;
}
.cns-se-form-group input:focus,
.cns-se-form-group select:focus,
.cns-se-form-group textarea:focus {
    outline: none;
    border-color: var(--cns-primary);
    box-shadow: 0 0 0 3px rgba(109,40,217,.12);
}
.cns-se-form-group textarea { resize: vertical; min-height: 120px; line-height: 1.7; }
.cns-se-field-hint { display: block; font-size: 12px; color: var(--cns-muted); margin-top: 5px; }
.cns-se-help-text  { font-size: 13px; color: var(--cns-text-sec); margin: 4px 0 10px; }
.cns-se-form-group .req { color: var(--cns-danger); }
.cns-se-row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.cns-se-row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 20px; }

/* API Key toggle button */
.cns-se-key-toggle {
    position: absolute; right: 10px; top: 50%; transform: translateY(-50%);
    background: none; border: none; cursor: pointer; color: var(--cns-muted); padding: 4px;
}

/* ── MCQ Grid (Admin Answer Key Builder) ─────────────────────────── */
.cns-se-mcq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 10px;
    margin-top: 14px;
}
.cns-se-mcq-item {
    display: flex; align-items: center; gap: 6px;
    background: #f8fafc; border: 1px solid var(--cns-border);
    padding: 7px 10px; border-radius: 6px;
}
.cns-se-mcq-item span { font-weight: 700; color: var(--cns-text-sec); font-size: 13px; min-width: 30px; }
.cns-se-mcq-item select { flex: 1; padding: 5px; border: 1px solid var(--cns-border); border-radius: 4px; font-weight: 700; background: #fff; }

/* ── AI Info Box ──────────────────────────────────────────────────── */
.cns-se-ai-info-box {
    display: flex; gap: 14px; align-items: flex-start;
    background: linear-gradient(135deg, #ede9fe, #f5f3ff);
    border: 1px solid #ddd6fe;
    border-radius: var(--cns-radius-sm);
    padding: 16px 18px;
    font-size: 14px; color: #4c1d95;
    margin-bottom: 16px;
}
.cns-se-ai-info-box i { flex-shrink: 0; margin-top: 2px; color: #7c3aed; }

/* ── Admin Exam Cards ─────────────────────────────────────────────── */
.cns-se-exam-cards { display: flex; flex-direction: column; gap: 14px; }
.cns-se-exam-card {
    background: var(--cns-card);
    border: 1px solid var(--cns-border);
    border-radius: var(--cns-radius);
    padding: 20px 22px;
    box-shadow: var(--cns-shadow);
    transition: box-shadow .2s;
}
.cns-se-exam-card:hover { box-shadow: 0 8px 24px rgba(0,0,0,.1); }
.cns-se-exam-card-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; }
.cns-se-exam-card-title  { font-size: 16px; font-weight: 700; color: var(--cns-text); }
.cns-lesson-index-label {
    display: inline-block;
    font-size: 11px; font-weight: 700; letter-spacing: .4px; text-transform: uppercase;
    color: var(--cns-primary, #7c3aed);
    background: var(--cns-primary-lt, #ede9fe);
    padding: 1px 7px; border-radius: 4px;
    margin-top: 3px;
}
.cns-se-result-pill { text-align: center; background: var(--cns-primary-lt); border-radius: 10px; padding: 8px 14px; }
.cns-se-result-pill span { display: block; font-size: 22px; font-weight: 800; color: var(--cns-primary); }
.cns-se-result-pill small { font-size: 11px; color: var(--cns-muted); font-weight: 600; text-transform: uppercase; }
.cns-se-exam-card-meta { display: flex; gap: 14px; flex-wrap: wrap; margin: 12px 0; font-size: 13px; color: var(--cns-text-sec); }
.cns-se-exam-card-meta span { display: flex; align-items: center; gap: 5px; }
.cns-se-exam-card-actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--cns-border); }

/* ── Results Table ────────────────────────────────────────────────── */
.cns-se-table { width: 100%; border-collapse: separate; border-spacing: 0; font-size: 14px; }
.cns-se-table th {
    background: #f8fafc; padding: 13px 14px;
    text-align: left; font-size: 12px; font-weight: 700;
    color: var(--cns-text-sec); text-transform: uppercase; letter-spacing: .4px;
    border-bottom: 2px solid var(--cns-border);
}
.cns-se-table td {
    padding: 13px 14px; border-bottom: 1px solid #f1f5f9;
    color: var(--cns-text); vertical-align: middle;
}
.cns-se-table tr:hover td { background: #fafafa; }

/* ── Empty State ──────────────────────────────────────────────────── */
.cns-se-empty-state {
    text-align: center; padding: 60px 20px;
    background: var(--cns-bg); border: 2px dashed var(--cns-border);
    border-radius: var(--cns-radius); color: var(--cns-muted);
}
.cns-se-empty-state i { font-size: 48px; color: #cbd5e1; display: block; margin-bottom: 16px; }
.cns-se-empty-state p { font-size: 15px; margin: 0; }
.cns-se-empty-state a { color: var(--cns-primary); font-weight: 600; }

/* ── Student Header ───────────────────────────────────────────────── */
.cns-se-student-header {
    display: flex; justify-content: space-between; align-items: center;
    background: linear-gradient(135deg, #f0f9ff, #e0f2fe);
    color: #0c2340; border-radius: var(--cns-radius); border: 1px solid #bae6fd;
    padding: 22px 26px;
    margin-bottom: 26px; flex-wrap: wrap; gap: 14px;
}
.cns-se-student-header-left { display: flex; align-items: center; gap: 16px; }
.cns-se-student-avatar {
    width: 52px; height: 52px; background: rgba(14,116,144,.12);
    border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 24px;
}
.cns-se-student-header h2 { margin: 0; font-size: 19px; font-weight: 800; color: #0c2340; }
.cns-se-student-header p  { margin: 6px 0 0; color: #1e5070; }

/* ── Exam List (Student) ──────────────────────────────────────────── */
.cns-se-section-title {
    font-size: 16px; font-weight: 700; color: var(--cns-text);
    margin: 0 0 16px; display: flex; align-items: center; gap: 8px;
}
.cns-se-exam-list { display: flex; flex-direction: column; gap: 12px; }
.cns-se-exam-list-item {
    background: var(--cns-card); border: 1.5px solid var(--cns-border);
    border-radius: var(--cns-radius); padding: 18px 20px;
    display: flex; justify-content: space-between; align-items: center;
    gap: 16px; flex-wrap: wrap;
    transition: box-shadow .2s, border-color .2s;
}
.cns-se-exam-list-item.is-live { border-color: #86efac; box-shadow: 0 0 0 3px rgba(16,185,129,.08); }
.cns-se-exam-list-info { flex: 1; min-width: 200px; }
.cns-se-exam-list-title { font-size: 16px; font-weight: 700; color: var(--cns-text); margin-bottom: 8px; display: flex; align-items: center; gap: 8px; }
.cns-se-exam-list-meta  { display: flex; gap: 12px; flex-wrap: wrap; font-size: 13px; color: var(--cns-text-sec); }
.cns-se-exam-list-meta span { display: flex; align-items: center; gap: 5px; }
.cns-se-exam-list-action { flex-shrink: 0; text-align: center; }
.cns-se-score-preview { font-size: 13px; color: var(--cns-text-sec); margin-bottom: 8px; }

/* Live dot animation */
.cns-se-live-dot {
    display: inline-block; width: 8px; height: 8px;
    background: var(--cns-success); border-radius: 50%;
    animation: cnsSelivePulse 1.5s ease-in-out infinite;
    flex-shrink: 0;
}
@keyframes cnsSelivePulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: .6; transform: scale(1.3); }
}

/* ── Exam Room Header ─────────────────────────────────────────────── */
.cns-se-exam-room-header {
    display: flex; justify-content: space-between; align-items: flex-start;
    gap: 16px; flex-wrap: wrap; margin-bottom: 24px;
}
.cns-se-exam-room-header h2 { margin: 8px 0 6px; font-size: 20px; font-weight: 800; }
.cns-se-back-link {
    display: inline-flex; align-items: center; gap: 6px;
    font-size: 13px; color: var(--cns-text-sec); text-decoration: none;
    font-weight: 600;
}
.cns-se-back-link:hover { color: var(--cns-primary); }

/* Timer */
.cns-se-timer {
    display: flex; align-items: center; gap: 8px;
    background: var(--cns-text); color: #fff;
    padding: 10px 18px; border-radius: 40px;
    font-size: 18px; font-weight: 800; flex-shrink: 0;
    transition: background .3s;
}
.cns-se-timer.urgent { background: var(--cns-danger); animation: cnsSetimerPulse .8s ease-in-out infinite; }
@keyframes cnsSetimerPulse { 0%,100%{opacity:1} 50%{opacity:.8} }

/* ── Exam Section ─────────────────────────────────────────────────── */
.cns-se-exam-section { margin-bottom: 24px; }
.cns-se-exam-section-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.cns-se-exam-section-header h3 { margin: 0; }

/* Question Paper */
.cns-se-question-paper {
    background: var(--cns-bg); border: 1px solid var(--cns-border);
    border-radius: var(--cns-radius-sm); margin-bottom: 20px; overflow: hidden;
}
.cns-se-question-paper-header {
    background: #f1f5f9; color: #1e293b; padding: 10px 16px;
    border-bottom: 1px solid #cbd5e1;
    font-size: 13px; font-weight: 700;
    display: flex; justify-content: space-between; align-items: center;
}
.cns-se-question-text { padding: 18px; font-size: 15px; line-height: 1.8; white-space: pre-line; }
.cns-se-copy-btn {
    background: #e2e8f0; border: 1px solid #94a3b8;
    color: #1e293b; padding: 5px 12px; border-radius: 6px;
    font-size: 12px; font-weight: 700; cursor: pointer;
    display: flex; align-items: center; gap: 6px;
    transition: background .2s;
}
.cns-se-copy-btn:hover { background: #cbd5e1; }

/* ── MCQ Answer Grid (Student) ───────────────────────────────────── */
/* ── MCQ Split Layout (Question Left | Answers Right) ──────────────── */
.cns-se-mcq-split-layout {
    display: flex; gap: 20px; align-items: flex-start; margin-top: 16px;
}
.cns-se-mcq-split-left {
    flex: 1 1 55%; min-width: 0;
    position: sticky; top: 80px; max-height: calc(100vh - 100px);
    overflow-y: auto;
}
.cns-se-mcq-split-right {
    flex: 0 0 340px; width: 340px;
}
.cns-se-mcq-split-left .cns-se-question-paper { margin-top: 0; }

.cns-se-mcq-answer-grid {
    display: grid; grid-template-columns: 1fr; gap: 8px;
    margin-top: 0;
}
.cns-se-mcq-answer-item {
    background: var(--cns-bg); border: 1.5px solid var(--cns-border);
    border-radius: var(--cns-radius-sm); padding: 10px 14px;
    display: flex; align-items: center; gap: 12px;
}
.cns-se-mcq-qnum { font-size: 12px; font-weight: 800; color: var(--cns-muted); text-transform: uppercase; min-width: 28px; flex-shrink: 0; }
.cns-se-mcq-options { display: flex; gap: 8px; flex: 1; }
.cns-se-mcq-option {
    flex: 1; text-align: center;
    border: 1.5px solid var(--cns-border); border-radius: 6px;
    padding: 8px 4px; cursor: pointer;
    font-weight: 700; font-size: 14px; color: var(--cns-text-sec);
    transition: all .15s;
    display: flex; align-items: center; justify-content: center;
}
.cns-se-mcq-option input { display: none; }
.cns-se-mcq-option:hover { border-color: var(--cns-primary); color: var(--cns-primary); background: var(--cns-primary-lt); }
.cns-se-mcq-option.selected { border-color: var(--cns-primary); background: var(--cns-primary); color: #fff; }
.cns-se-answer-count { font-size: 13px; color: var(--cns-text-sec); font-weight: 600; }

/* ── Submitted Banner ─────────────────────────────────────────────── */
.cns-se-submitted-banner {
    display: flex; gap: 14px; align-items: flex-start;
    background: #fffbeb; border: 1px solid #fde68a; border-radius: var(--cns-radius-sm);
    padding: 14px 18px; margin-bottom: 16px; font-size: 14px; color: #92400e;
}
.cns-se-submitted-banner i { font-size: 20px; color: var(--cns-warning); flex-shrink: 0; margin-top: 1px; }

/* ── Upload Area ──────────────────────────────────────────────────── */
.cns-se-upload-area {
    background: var(--cns-bg); border: 2px dashed var(--cns-border);
    border-radius: var(--cns-radius); padding: 36px 20px; text-align: center;
    transition: border-color .2s;
    margin-top: 16px;
}
.cns-se-upload-area:hover { border-color: var(--cns-primary); }

/* ── MCQ Result ───────────────────────────────────────────────────── */
.cns-se-result-card { margin-top: 16px; }
.cns-se-result-hero { text-align: center; padding: 28px 20px; }
.cns-se-result-score { font-size: 60px; font-weight: 900; line-height: 1; }
.cns-se-result-score span { font-size: 26px; font-weight: 400; opacity: .7; }
.cns-se-result-grade { font-size: 22px; font-weight: 800; margin-top: 6px; }
.cns-se-result-pct   { font-size: 15px; color: var(--cns-text-sec); margin-top: 4px; }
.cns-se-wrong-list   { margin-top: 20px; }
.cns-se-wrong-list h4 { margin: 0 0 12px; font-size: 14px; display: flex; align-items: center; gap: 6px; }
.cns-se-wrong-item {
    display: flex; align-items: center; gap: 10px;
    background: #fef2f2; border: 1px solid #fecaca; border-radius: 6px;
    padding: 8px 12px; margin-bottom: 6px; font-size: 14px;
}
.cns-se-wrong-qn      { font-weight: 800; color: var(--cns-text-sec); min-width: 34px; }
.cns-se-wrong-given   { background: #fca5a5; color: #991b1b; border-radius: 4px; padding: 2px 8px; font-weight: 700; }
.cns-se-wrong-correct { background: #86efac; color: #166534; border-radius: 4px; padding: 2px 8px; font-weight: 700; }
.cns-se-all-correct   { background: #ecfdf5; color: #065f46; border-radius: 8px; padding: 14px; text-align: center; font-weight: 700; font-size: 15px; }

/* ── AI Result ────────────────────────────────────────────────────── */
.cns-se-ai-loading { text-align: center; padding: 40px 20px; }
.cns-se-ai-loading p { margin: 12px 0 0; }
.cns-se-ai-summary-block {
    background: var(--cns-bg); border-left: 4px solid var(--cns-primary);
    border-radius: 0 8px 8px 0; padding: 14px 16px;
    font-size: 14px; color: var(--cns-text-sec); margin-bottom: 14px;
}
.cns-se-ai-box {
    border-radius: var(--cns-radius-sm); padding: 14px 16px;
    font-size: 13px;
}
.cns-se-ai-box strong { display: block; margin-bottom: 6px; font-size: 13px; }
.cns-se-ai-box p      { margin: 0; line-height: 1.6; }
.cns-se-ai-box-green  { background: #ecfdf5; border: 1px solid #a7f3d0; color: #065f46; }
.cns-se-ai-box-amber  { background: #fffbeb; border: 1px solid #fde68a; color: #92400e; }
.cns-se-ai-question-row {
    background: #fafafa; border: 1px solid var(--cns-border);
    border-radius: var(--cns-radius-sm); padding: 14px 16px; margin-bottom: 10px;
}
.cns-se-ai-q-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
.cns-se-ai-qnum     { font-weight: 800; font-size: 15px; color: var(--cns-text); }
.cns-se-ai-qscore   { font-weight: 800; font-size: 15px; }
.cns-se-ai-summary  { margin: 6px 0; font-size: 13px; color: var(--cns-text-sec); }
.cns-se-ai-mistake  { margin: 6px 0; font-size: 13px; background: #fef2f2; padding: 6px 10px; border-radius: 4px; }
.cns-se-ai-feedback { margin: 6px 0; font-size: 13px; background: #fffbeb; padding: 6px 10px; border-radius: 4px; }

/* ── Result Page ──────────────────────────────────────────────────── */
.cns-se-result-page-header { margin: 12px 0 20px; }
.cns-se-result-page-header h2 { margin: 0 0 8px; font-size: 22px; font-weight: 800; }
.cns-se-total-score-hero {
    background: linear-gradient(135deg, #f5f3ff, #ede9fe);
    color: #1e1b4b; border: 1px solid #c4b5fd; border-radius: var(--cns-radius); padding: 28px;
    text-align: center; margin-bottom: 22px;
}
.cns-se-total-score-num { font-size: 64px; font-weight: 900; line-height: 1; color: #4c1d95; }
.cns-se-total-score-num span { font-size: 28px; color: #7c3aed; font-weight: 400; }
.cns-se-total-score-pct { font-size: 22px; font-weight: 700; color: #5b21b6; margin-top: 4px; }
.cns-se-total-score-bar {
    max-width: 280px; height: 8px; background: rgba(255,255,255,.2);
    border-radius: 20px; overflow: hidden; margin: 14px auto 0;
}

/* ── MCQ Breakdown ────────────────────────────────────────────────── */
.cns-se-mcq-breakdown {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(90px, 1fr)); gap: 8px;
    margin-top: 12px;
}
.cns-se-mcq-breakdown-item {
    border-radius: 8px; padding: 10px 8px; text-align: center; border: 1.5px solid;
}
.cns-se-mcq-breakdown-item.correct { background: #ecfdf5; border-color: #86efac; }
.cns-se-mcq-breakdown-item.wrong   { background: #fef2f2; border-color: #fca5a5; }
.cns-se-mcq-breakdown-item.blank   { background: #f8fafc; border-color: #e2e8f0; }
.cns-se-bd-qnum   { font-size: 11px; font-weight: 700; color: var(--cns-muted); margin-bottom: 4px; }
.cns-se-bd-given  { font-size: 18px; font-weight: 800; }
.correct .cns-se-bd-given { color: #10b981; }
.wrong   .cns-se-bd-given { color: #ef4444; }
.blank   .cns-se-bd-given { color: var(--cns-muted); }
.cns-se-bd-correct { font-size: 12px; font-weight: 800; color: #10b981; margin-top: 4px; }

/* ── Responsive ───────────────────────────────────────────────────── */
@media (max-width: 768px) {
    .cns-se-row-2, .cns-se-row-3 { grid-template-columns: 1fr; gap: 0; }
    .cns-se-admin-header { padding: 16px; }
    .cns-se-section-card { padding: 16px; }
    .cns-se-mcq-answer-grid { grid-template-columns: 1fr 1fr; }
    .cns-se-mcq-split-layout { flex-direction: column; }
    .cns-se-mcq-split-left { position: static; max-height: none; overflow-y: visible; flex: 1 1 100%; width: 100%; }
    .cns-se-mcq-split-right { flex: 1 1 100%; width: 100%; }
    .cns-se-ai-box { grid-column: span 2; }
    .cns-se-exam-room-header { flex-direction: column; }
    .cns-se-timer { align-self: flex-start; }
    .cns-se-total-score-num { font-size: 48px; }
    .cns-se-mcq-breakdown { grid-template-columns: repeat(auto-fill, minmax(70px, 1fr)); }
}
@media (max-width: 480px) {
    .cns-se-tabs { gap: 2px; }
    .cns-se-tab  { padding: 9px 12px; font-size: 13px; }
    .cns-se-mcq-answer-grid { grid-template-columns: 1fr; }
    .cns-se-exam-card-actions { flex-direction: column; }
    .cns-se-exam-card-actions .cns-se-btn { width: 100%; justify-content: center; }
}

/* ── SSC Badge ────────────────────────────────────────────────────── */
.cns-se-badge-orange { background: #fff7ed; color: #c2410c; border: 1px solid #fed7aa; }

/* ── Textbook PDF — Admin list ────────────────────────────────────── */
.cns-se-pdf-list { display: flex; flex-direction: column; gap: 8px; }
.cns-se-pdf-item {
    display: flex; align-items: center; gap: 12px;
    background: #f0f9ff; border: 1px solid #bae6fd;
    border-radius: var(--cns-radius-sm); padding: 12px 14px;
}
.cns-se-pdf-upload-slot { margin-bottom: 10px; }

/* ── Textbook Reference Box — Student exam room ───────────────────── */
.cns-se-textbook-ref-box {
    background: linear-gradient(135deg, #f0f9ff, #e0f2fe);
    border: 1.5px solid #7dd3fc;
    border-radius: var(--cns-radius-sm);
    padding: 14px 18px;
    margin: 14px 0;
}
.cns-se-textbook-ref-header {
    display: flex; align-items: center; gap: 8px;
    font-size: 14px; color: #0c4a6e; margin-bottom: 4px;
}
.cns-se-textbook-ref-header i { color: #0369a1; }
.cns-se-textbook-ref-item {
    display: flex; align-items: center; gap: 8px;
    font-size: 13px; color: #0c4a6e;
    background: rgba(255,255,255,.6);
    border-radius: 6px; padding: 7px 10px;
    border: 1px solid #bae6fd;
}

/* ── AI question row — textbook reference field ───────────────────── */
.cns-se-ai-textbook-ref {
    font-size: 12px; color: #0369a1;
    background: #e0f2fe; border-radius: 4px;
    padding: 4px 8px; margin: 4px 0;
    display: flex; align-items: center; gap: 5px;
}

/* ── Rich Text Editor (Admin) ─────────────────────────────────────── */
.cns-se-editor-toolbar {
    display: flex; flex-wrap: wrap; gap: 4px; align-items: center;
    background: #f8fafc; border: 1.5px solid var(--cns-border);
    border-bottom: none; border-radius: 8px 8px 0 0;
    padding: 8px 10px;
}
.cns-se-editor-toolbar button {
    background: #fff; border: 1px solid var(--cns-border);
    border-radius: 5px; padding: 5px 9px; cursor: pointer;
    font-size: 13px; color: var(--cns-text-sec);
    transition: all .15s; line-height: 1;
}
.cns-se-editor-toolbar button:hover { background: var(--cns-primary-lt); color: var(--cns-primary); border-color: var(--cns-primary); }
.cns-se-toolbar-sep { width: 1px; height: 22px; background: var(--cns-border); margin: 0 4px; flex-shrink: 0; }
.cns-se-preview-btn { background: #ede9fe !important; color: var(--cns-primary) !important; font-weight: 700 !important; }
.cns-se-rich-editor {
    min-height: 180px; padding: 14px 16px;
    border: 1.5px solid var(--cns-border); border-radius: 0 0 8px 8px;
    font-size: 14px; line-height: 1.8; color: var(--cns-text);
    background: #fff; outline: none; box-sizing: border-box; width: 100%;
    font-family: 'Courier New', 'Consolas', monospace;
    resize: vertical;
}
.cns-se-rich-editor:focus { border-color: var(--cns-primary); box-shadow: 0 0 0 3px rgba(109,40,217,.1); }
.cns-se-preview-panel {
    margin-top: 0;
    border: 2px solid var(--cns-primary);
    border-top: none;
    border-radius: 0 0 8px 8px;
    overflow: hidden;
    background: #fff;
}
.cns-se-preview-label {
    background: var(--cns-primary); color: #fff;
    padding: 8px 14px; font-size: 12px; font-weight: 700;
    display: flex; align-items: center; gap: 6px;
}

/* ── Question image section (Admin) ──────────────────────────────── */
.cns-se-qimg-section {
    margin-top: 16px; background: #f0f9ff;
    border: 1.5px dashed #7dd3fc; border-radius: 8px; padding: 16px;
}
.cns-se-qimg-header {
    display: flex; align-items: center; gap: 8px;
    font-size: 14px; color: #0c4a6e; margin-bottom: 12px;
}
.cns-se-qimg-existing { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 12px; }
.cns-se-qimg-thumb {
    position: relative; width: 100px; border-radius: 8px; overflow: hidden;
    border: 2px solid #bae6fd; cursor: pointer;
}
.cns-se-qimg-thumb img { width: 100px; height: 120px; object-fit: cover; display: block; }
.cns-se-qimg-overlay {
    position: absolute; bottom: 0; left: 0; right: 0;
    background: rgba(0,0,0,.55); color: #fff;
    padding: 5px 6px; display: flex; justify-content: space-between; align-items: center;
    font-size: 11px; font-weight: 700;
}

/* ── Question images display (Student) ───────────────────────────── */
.cns-se-qimg-display { display: flex; flex-wrap: wrap; gap: 12px; padding: 14px 16px; background: #f8fafc; }
.cns-se-qimg-display-item { text-align: center; }
.cns-se-qimg-display-label { font-size: 11px; font-weight: 700; color: var(--cns-muted); margin-bottom: 5px; text-transform: uppercase; }
.cns-se-qimg-display img { max-width: 100%; max-height: 320px; border-radius: 8px; border: 1px solid var(--cns-border); display: block; }

/* ── Rich content display (Student question paper) ───────────────── */
.cns-se-rich-content { padding: 18px; font-size: 15px; line-height: 1.9; }
.cns-se-rich-content h1, .cns-se-rich-content h2, .cns-se-rich-content h3 { margin: 12px 0 8px; }
.cns-se-rich-content strong { font-weight: 700; }
.cns-se-rich-content em { font-style: italic; }
.cns-se-rich-content ul, .cns-se-rich-content ol { padding-left: 20px; margin: 8px 0; }

/* ── Multi-page script upload (Student) ──────────────────────────── */
.cns-se-pages-list { margin-bottom: 16px; }
.cns-se-page-thumb { display: inline-block; }

/* ── Image fullscreen viewer ─────────────────────────────────────── */
.cns-se-img-fullscreen {
    position: fixed; top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,.92); z-index: 99999;
    display: flex; align-items: center; justify-content: center;
    cursor: zoom-out;
}
.cns-se-img-fullscreen img {
    max-width: 95vw; max-height: 95vh;
    border-radius: 8px; box-shadow: 0 20px 60px rgba(0,0,0,.5);
}
.cns-se-img-fullscreen-close {
    position: fixed; top: 16px; right: 20px;
    color: #fff; font-size: 28px; cursor: pointer;
    font-weight: 700; line-height: 1;
    background: rgba(255,255,255,.15); border-radius: 50%;
    width: 40px; height: 40px; display: flex; align-items: center; justify-content: center;
}

/* ── MathJax equation rendering ──────────────────────────────────── */
.cns-se-rich-content mjx-container,
.cns-se-question-text mjx-container,
.cns-se-preview-panel mjx-container {
    overflow-x: auto;
    max-width: 100%;
}
/* Display math — center on its own line */
.cns-se-rich-content mjx-container[display="true"],
.cns-se-question-text mjx-container[display="true"] {
    display: block;
    margin: 12px 0;
    text-align: left;
}
/* Inline math — stays in text flow */
.cns-se-rich-content mjx-container:not([display="true"]),
.cns-se-question-text mjx-container:not([display="true"]) {
    display: inline;
    vertical-align: middle;
}
/* Make fractions and large symbols slightly larger */
.cns-se-rich-content mjx-math,
.cns-se-question-text mjx-math {
    font-size: 110% !important;
}
/* Question paper display — readable size */
.cns-se-question-text {
    font-size: 15px;
    line-height: 2.0;
}

/* ── Math editor — preview bar below textarea ─────────────────────── */
.cns-se-preview-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 14px;
    background: var(--cns-bg);
    border: 1.5px solid var(--cns-border);
    border-top: none;
    border-radius: 0 0 8px 8px;
    flex-wrap: wrap;
    gap: 8px;
}
.cns-se-preview-bar.preview-open {
    border-radius: 0;
    border-bottom-color: var(--cns-primary);
    border-color: var(--cns-primary);
}
.cns-se-preview-bar code {
    background: #e2e8f0;
    padding: 1px 5px;
    border-radius: 4px;
    font-size: 12px;
    color: var(--cns-text);
}
/* Override rich-editor bottom border-radius when preview-bar follows */
.cns-se-math-editor-wrap .cns-se-rich-editor {
    border-radius: 0;
    border-bottom: none;
}
/* Toolbar top corners */
.cns-se-math-editor-wrap .cns-se-editor-toolbar {
    border-radius: 8px 8px 0 0;
}
/* Label inside toolbar */
.cns-se-tb-label {
    font-size: 10px;
    font-weight: 700;
    color: var(--cns-muted);
    letter-spacing: .5px;
    align-self: center;
    padding: 0 2px;
}

/* ═══════════════════════════════════════════════════════════════════
   CNS EXAM SYSTEM v2.0 — ADDITIONS
   ═══════════════════════════════════════════════════════════════════ */

/* ── New Badge Colours (Grade system) ────────────────────────────── */
.cns-se-badge-teal  { background: #f0fdfa; color: #0f766e; border: 1px solid #99f6e4; }
.cns-se-badge-cyan  { background: #ecfeff; color: #0e7490; border: 1px solid #a5f3fc; }
.cns-se-badge-sky   { background: #f0f9ff; color: #0369a1; border: 1px solid #bae6fd; }
.cns-se-badge-red   { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }
.cns-se-badge-pink  { background: #fdf2f8; color: #9d174d; border: 1px solid #fbcfe8; }
.cns-se-badge-indigo{ background: #eef2ff; color: #3730a3; border: 1px solid #c7d2fe; }

/* ── Student Tabs ─────────────────────────────────────────────────── */
.cns-se-student-tabs {
    display: flex; gap: 4px; border-bottom: 2px solid var(--cns-border);
    margin-bottom: 24px;
}
.cns-se-student-tab {
    padding: 10px 20px; text-decoration: none; color: var(--cns-text-sec);
    font-weight: 600; font-size: 14px; border-bottom: 3px solid transparent;
    margin-bottom: -2px; border-radius: 8px 8px 0 0; display: flex;
    align-items: center; gap: 7px; transition: all .2s;
}
.cns-se-student-tab:hover { color: var(--cns-primary); background: var(--cns-primary-lt); }
.cns-se-student-tab.active { color: var(--cns-primary); border-bottom-color: var(--cns-primary); background: var(--cns-primary-lt); }

/* ── Language Toggle (Notes) ─────────────────────────────────────── */
.cns-se-notes-lang-toggle {
    display: flex; gap: 8px; margin-bottom: 20px;
}
.cns-se-lang-btn {
    padding: 8px 18px; border-radius: 20px; text-decoration: none;
    font-weight: 700; font-size: 14px; transition: all .2s;
    border: 2px solid var(--cns-border); color: var(--cns-text-sec);
    background: #fff;
}
.cns-se-lang-btn:hover { border-color: var(--cns-primary); color: var(--cns-primary); }
.cns-se-lang-btn.active { background: var(--cns-primary); border-color: var(--cns-primary); color: #fff; }
.cns-se-lang-switch-btn {
    padding: 8px 16px; background: #f0fdf4; border: 2px solid #86efac;
    color: #166534; border-radius: 20px; text-decoration: none;
    font-weight: 700; font-size: 13px; transition: all .2s;
}
.cns-se-lang-switch-btn:hover { background: #dcfce7; }

/* ── Subject Grid ─────────────────────────────────────────────────── */
.cns-se-subject-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
}
.cns-se-subject-card {
    background: #fff; border: 1.5px solid var(--cns-border);
    border-radius: var(--cns-radius); padding: 20px 18px;
    text-decoration: none; color: var(--cns-text);
    transition: box-shadow .2s, transform .2s, border-color .2s;
    display: flex; flex-direction: column; gap: 10px;
    position: relative; overflow: hidden;
}
.cns-se-subject-card::after {
    content: '';
    position: absolute; inset: 0; opacity: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0) 60%, rgba(255,255,255,.4));
    transition: opacity .2s;
    pointer-events: none;
}
.cns-se-subject-card:hover {
    box-shadow: 0 10px 28px rgba(0,0,0,.11); transform: translateY(-3px);
    border-color: transparent;
}
.cns-se-subject-card:hover::after { opacity: 1; }
.cns-se-subject-icon {
    width: 44px; height: 44px; border-radius: 10px;
    display: flex; align-items: center; justify-content: center; font-size: 20px;
}
.cns-se-subject-name { font-size: 15px; font-weight: 700; color: var(--cns-text); }
.cns-se-subject-meta { font-size: 12px; color: var(--cns-muted); }

/* ── Chapter List ─────────────────────────────────────────────────── */
.cns-se-chapter-list { display: flex; flex-direction: column; gap: 8px; }
.cns-se-chapter-item {
    background: #fff; border: 1.5px solid var(--cns-border);
    border-radius: var(--cns-radius-sm); padding: 14px 18px;
    text-decoration: none; color: var(--cns-text);
    display: flex; align-items: center; gap: 14px;
    transition: border-color .2s, box-shadow .2s;
}
.cns-se-chapter-item:hover {
    border-color: var(--cns-primary); box-shadow: 0 2px 12px rgba(109,40,217,.1);
}
.cns-se-chapter-icon {
    width: 36px; height: 36px; background: var(--cns-primary-lt);
    border-radius: 8px; display: flex; align-items: center; justify-content: center;
    color: var(--cns-primary); font-size: 16px; flex-shrink: 0;
}
.cns-se-chapter-info { flex: 1; }
.cns-se-chapter-name   { font-size: 15px; font-weight: 700; }
.cns-se-chapter-lesson { font-size: 13px; color: var(--cns-text-sec); margin-top: 2px; }
.cns-se-chapter-arrow  { color: var(--cns-muted); flex-shrink: 0; }

/* ── Note Reader ──────────────────────────────────────────────────── */
.cns-se-note-header {
    background: linear-gradient(135deg, #f5f3ff, #ede9fe);
    color: #1e1b4b; border: 1px solid #c4b5fd; border-radius: var(--cns-radius); padding: 24px 28px;
    margin-bottom: 24px;
}
.cns-se-note-breadcrumb { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; color: #374151; }
.cns-se-note-title { font-size: 22px; font-weight: 800; margin: 4px 0; color: #1e1b4b; }
.cns-se-note-lesson { font-size: 14px; color: #5b21b6; margin-top: 4px; display: flex; align-items: center; gap: 6px; }
.cns-se-note-header-content { display: flex; justify-content: space-between; align-items: flex-start; flex-wrap: wrap; gap: 12px; }
.cns-se-note-content-wrap {
    background: #fff; border: 1px solid var(--cns-border);
    border-radius: var(--cns-radius); overflow: visible; box-shadow: var(--cns-shadow);
}
.cns-se-note-content {
    padding: 32px; font-size: 15px; line-height: 1.9;
    max-width: 860px; margin: 0 auto; overflow-x: auto; border-radius: 0 0 var(--cns-radius) var(--cns-radius);
    font-family: 'Inter', 'Noto Sans Bengali', 'Hind Siliguri', Arial, sans-serif !important;
}

/* Ensure note content never clips horizontally — math/computation boxes must scroll */
#cns_note_content, #cn_notes_preview, #edit_notes_preview {
    overflow-x: auto !important;
    overflow-y: visible !important;
}

/* Notes content inner styles — Inter for English, Noto Sans Bengali + Hind Siliguri for Bangla */
.cns-notes-content,
.cns-notes-content p, .cns-notes-content li,
.cns-notes-content td, .cns-notes-content th,
.cns-notes-content h1, .cns-notes-content h2,
.cns-notes-content h3, .cns-notes-content h4,
.cns-notes-content h5, .cns-notes-content h6,
.cns-notes-content blockquote, .cns-notes-content span {
    font-family: 'Inter', 'Noto Sans Bengali', 'Hind Siliguri', Arial, sans-serif !important;
}

/* ── Headings: use #cns_note_content (specificity 1,0,1) to beat theme
      WITHOUT !important, so AI-generated inline color/border styles still win ── */
#cns_note_content h2,
.cns-se-wrap .cns-notes-content h2 {
    font-size: 19px !important; font-weight: 800 !important; margin: 32px 0 14px !important;
    padding-bottom: 6px; line-height: 1.3;
    /* Default styling when AI doesn't provide inline color/border */
    color: #1e40af;
    border-left: 4px solid #3b82f6; padding-left: 14px;
    border-bottom: none; background: none;
}
#cns_note_content h3,
.cns-se-wrap .cns-notes-content h3 {
    font-size: 16px !important; font-weight: 700 !important; margin: 22px 0 10px !important;
    /* No display:flex — don't rearrange AI-generated emoji content */
    /* No ::before dot — AI h3s start with emoji icons already */
    background: none;
    /* Default color only — AI inline color overrides this */
    color: #1e3a8a;
}
/* Remove the ::before blue-dot that clashes with AI emoji icons on h3 */
#cns_note_content h3::before,
.cns-se-wrap .cns-notes-content h3::before { content: none !important; display: none !important; }
#cns_note_content h4,
.cns-se-wrap .cns-notes-content h4 {
    font-size: 15px !important; font-weight: 700 !important; margin: 16px 0 6px !important;
    background: none; color: #374151;
}
.cns-notes-content ul { padding-left: 22px; margin: 8px 0 14px; }
.cns-notes-content li { margin-bottom: 6px; line-height: 1.8; }

/* Better table — striped rows, sticky header shadow */
.cns-notes-content table {
    width: 100%; border-collapse: collapse;
    margin: 20px 0; font-size: 14px;
    border: 1.5px solid #e2e8f0; border-radius: 10px; overflow: hidden;
    box-shadow: 0 1px 6px rgba(0,0,0,.05);
}
.cns-notes-content thead th,
.cns-notes-content th {
    background: linear-gradient(135deg,#1e40af,#1d4ed8) !important;
    color: #fff !important; padding: 11px 14px; text-align: left;
    font-size: 13px; font-weight: 700; letter-spacing: .3px;
}
/* Force white on any inline element (strong, span, etc.) inside a th —
   AI-generated inline color styles would otherwise make text invisible */
.cns-notes-content th *,
.cns-notes-content thead th * { color: #fff !important; }
.cns-notes-content td { padding: 10px 14px; border-bottom: 1px solid #f1f5f9; }
.cns-notes-content tbody tr:nth-child(even) td { background: #f8fafc; }
.cns-notes-content tbody tr:hover td { background: #eff6ff; }

/* Better blockquote */
.cns-notes-content blockquote {
    background: #f0f9ff; border-left: 4px solid #0ea5e9;
    padding: 14px 18px; margin: 18px 0; border-radius: 0 8px 8px 0;
    color: #0c4a6e; font-style: normal; font-size: 14.5px;
}
.cns-notes-content blockquote::before {
    content: '"'; font-size: 36px; color: #0ea5e9;
    line-height: 1; display: block; margin-bottom: -8px;
    font-family: Georgia, serif; opacity: .6;
}

/* ─── Preserve AI-generated layout containers against theme overrides ───────
   WordPress themes often reset display on divs/spans. These rules force
   flex / grid / inline-block back when set as inline styles.              */

/* flex */
#cns_note_content div[style*="display:flex"],
#cns_note_content div[style*="display: flex"],
.cns-notes-content div[style*="display:flex"],
.cns-notes-content div[style*="display: flex"] {
    display: flex !important;
}
/* inline-flex */
#cns_note_content div[style*="display:inline-flex"],
#cns_note_content div[style*="display: inline-flex"],
.cns-notes-content div[style*="display:inline-flex"],
.cns-notes-content div[style*="display: inline-flex"] {
    display: inline-flex !important;
}
/* grid */
#cns_note_content div[style*="display:grid"],
#cns_note_content div[style*="display: grid"],
.cns-notes-content div[style*="display:grid"],
.cns-notes-content div[style*="display: grid"] {
    display: grid !important;
}
/* inline-block */
#cns_note_content div[style*="display:inline-block"],
#cns_note_content div[style*="display: inline-block"],
#cns_note_content span[style*="display:inline-block"],
#cns_note_content span[style*="display: inline-block"],
.cns-notes-content div[style*="display:inline-block"],
.cns-notes-content div[style*="display: inline-block"],
.cns-notes-content span[style*="display:inline-block"],
.cns-notes-content span[style*="display: inline-block"] {
    display: inline-block !important;
    max-width: 100%;
    box-sizing: border-box;
}
/* inline-block (legacy attribute match without display: prefix) */
.cns-notes-content div[style*="inline-block"],
.cns-notes-content span[style*="inline-block"] {
    display: inline-block !important;
    max-width: 100%;
    box-sizing: border-box;
}

/* Horizontal scroll wrapper for oversized flex/grid rows on mobile */
#cns_note_content > div[style*="display:flex"],
#cns_note_content > div[style*="display: flex"],
.cns-notes-content > div[style*="display:flex"],
.cns-notes-content > div[style*="display: flex"] {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

/* Ensure centered math/diagram wrapper divs don't clip inline-block children */
.cns-notes-content div[style*="text-align:center"],
.cns-notes-content div[style*="text-align: center"] {
    overflow-x: auto;
    padding: 4px 0;
}

/* Key-term highlight boxes generated by AI with class .cns-keyterm */
.cns-notes-content .cns-keyterm {
    display: inline-block; background: #fefce8;
    border: 1px solid #fde68a; border-radius: 5px;
    padding: 1px 8px; font-weight: 700; color: #92400e;
    font-size: .95em;
}
/* Definition / important boxes */
.cns-notes-content .cns-box-important,
.cns-notes-content .important-box {
    background: #fff7ed; border: 1.5px solid #fed7aa;
    border-radius: 10px; padding: 14px 18px; margin: 16px 0;
    color: #9a3412; font-size: 14px;
}
.cns-notes-content .cns-box-tip,
.cns-notes-content .tip-box {
    background: #f0fdf4; border: 1.5px solid #86efac;
    border-radius: 10px; padding: 14px 18px; margin: 16px 0;
    color: #166534; font-size: 14px;
}

.cns-notes-content code {
    background: #f1f5f9; padding: 2px 7px; border-radius: 4px;
    font-size: .9em; color: #0f172a; font-family: 'Courier New', monospace;
}
/* ── Paragraph & base text ── */
.cns-notes-content p {
    margin-bottom: 10px !important;
    line-height: 1.85 !important;
    font-size: 15px !important;
    /* NO color !important — let AI-generated inline colors win */
}

/* ── H1 ── */
#cns_note_content h1,
.cns-se-wrap .cns-notes-content h1 {
    font-size: 22px !important; font-weight: 800 !important;
    margin: 28px 0 12px !important; line-height: 1.3 !important;
    border-bottom: 2px solid #e5e7eb; padding-bottom: 6px;
    /* Default color — AI inline overrides this */
    color: #111827;
}

/* ── Strengthen h2/h3/h4 against theme overrides ── */
/* NOTE: already defined above with #cns_note_content selector — these
   reinforce font-size/margin but do NOT override AI inline colors */

/* ── Ordered list ── */
.cns-notes-content ol {
    padding-left: 22px !important; margin: 8px 0 14px !important;
    list-style-type: decimal !important;
}
.cns-notes-content ol li { margin-bottom: 6px !important; line-height: 1.8 !important; }

/* ── Images ── */
.cns-notes-content img {
    max-width: 100% !important; height: auto !important;
    border-radius: 8px !important; margin: 12px 0 !important;
    display: block !important; border: 1px solid #e5e7eb;
}

/* ── Links ── */
.cns-notes-content a {
    color: #2563eb !important; text-decoration: underline !important;
}
.cns-notes-content a:hover { color: #1d4ed8 !important; }

/* ── HR divider ── */
.cns-notes-content hr {
    border: none !important; border-top: 2px solid #e5e7eb !important;
    margin: 24px 0 !important;
}

/* strong: default red for key terms — AI inline color overrides this */
.cns-notes-content strong { color: #dc2626; font-weight: 700; }
.cns-notes-content svg { max-width: 100%; height: auto; display: block; margin: 16px auto; overflow: visible; }
.cns-notes-content svg text { font-family: Arial, sans-serif; }
/* Student note view */
.cns-se-note-content svg, #cns_note_content svg { max-width: 100% !important; height: auto; display: block; margin: 16px auto; overflow: visible; }
/* Admin preview */
#cn_notes_preview svg, #edit_notes_preview svg { max-width: 100% !important; height: auto; display: block; margin: 16px auto; overflow: visible; }

.cns-chart-block { margin: 20px auto; padding: 16px 18px 18px; background: #fafafa; border-radius: 10px; border: 1px solid #e2e8f0; box-sizing: border-box; overflow: hidden; }
.cns-chart-block canvas { max-width: 100% !important; display: block; margin: 0 auto; }
.cns-chart-block p { margin: 0 0 8px; }

/* ── Notes Browser Mobile ─────────────────────────────────────────── */
@media (max-width: 600px) {
    .cns-se-subject-grid { grid-template-columns: 1fr 1fr; }
    .cns-se-note-content { padding: 18px 14px; }
    .cns-se-note-title { font-size: 18px; }
    .cns-se-note-header { padding: 18px; }
    .cns-se-chapter-item { padding: 12px 14px; }
}


/* ═══════════════════════════════════════════════════════════════════
   FORCED LIGHT THEME OVERRIDES
   These use !important to beat any theme CSS that conflicts.
   Appended last so they have highest cascade position.
   ═══════════════════════════════════════════════════════════════════ */

/* ── Admin Header ── */
body .cns-se-admin-header,
.cns-se-wrap .cns-se-admin-header {
    background: linear-gradient(135deg, #f5f3ff, #ede9fe) !important;
    background-color: #f5f3ff !important;
    color: #1e1b4b !important;
    border: 1px solid #c4b5fd !important;
    box-shadow: none !important;
}
body .cns-se-admin-header *,
.cns-se-wrap .cns-se-admin-header * {
    color: #1e1b4b !important;
}
body .cns-se-admin-header h1,
.cns-se-wrap .cns-se-admin-header h1 {
    color: #1e1b4b !important;
}
body .cns-se-admin-header p,
.cns-se-wrap .cns-se-admin-header p {
    color: #5b21b6 !important;
    opacity: 1 !important;
}
body .cns-se-admin-logo,
.cns-se-wrap .cns-se-admin-logo {
    background: rgba(109,40,217,0.12) !important;
    color: #4c1d95 !important;
}

/* ── Student Welcome Header ── */
body .cns-se-student-header,
.cns-se-wrap .cns-se-student-header {
    background: linear-gradient(135deg, #f0f9ff, #e0f2fe) !important;
    background-color: #f0f9ff !important;
    color: #0c2340 !important;
    border: 1px solid #bae6fd !important;
    box-shadow: none !important;
}
body .cns-se-student-header *,
.cns-se-wrap .cns-se-student-header * {
    color: #0c2340 !important;
}
body .cns-se-student-header h2,
.cns-se-wrap .cns-se-student-header h2 {
    color: #0c2340 !important;
}
body .cns-se-student-header p,
.cns-se-wrap .cns-se-student-header p {
    color: #1e5070 !important;
}
body .cns-se-student-avatar,
.cns-se-wrap .cns-se-student-avatar {
    background: rgba(14,116,144,0.12) !important;
    color: #0e7490 !important;
}

/* ── Note Reader Header ── */
body .cns-se-note-header,
.cns-se-wrap .cns-se-note-header {
    background: linear-gradient(135deg, #f5f3ff, #ede9fe) !important;
    background-color: #f5f3ff !important;
    color: #1e1b4b !important;
    border: 1px solid #c4b5fd !important;
    box-shadow: none !important;
}
body .cns-se-note-header *,
.cns-se-wrap .cns-se-note-header * {
    color: #1e1b4b !important;
}
body .cns-se-note-header .cns-se-back-link,
.cns-se-wrap .cns-se-note-header .cns-se-back-link {
    color: #5b21b6 !important;
}
body .cns-se-note-title,
.cns-se-wrap .cns-se-note-title {
    color: #1e1b4b !important;
}
body .cns-se-note-lesson,
.cns-se-wrap .cns-se-note-lesson {
    color: #5b21b6 !important;
    opacity: 1 !important;
}
body .cns-se-note-breadcrumb,
.cns-se-wrap .cns-se-note-breadcrumb {
    color: #374151 !important;
}

/* ── Question Paper Header ── */
body .cns-se-question-paper-header,
.cns-se-wrap .cns-se-question-paper-header {
    background: #f1f5f9 !important;
    background-color: #f1f5f9 !important;
    color: #1e293b !important;
    border-bottom: 1px solid #cbd5e1 !important;
}
body .cns-se-question-paper-header *,
.cns-se-wrap .cns-se-question-paper-header * {
    color: #1e293b !important;
}
body .cns-se-copy-btn,
.cns-se-wrap .cns-se-copy-btn {
    background: #e2e8f0 !important;
    border: 1px solid #94a3b8 !important;
    color: #1e293b !important;
}
body .cns-se-copy-btn:hover,
.cns-se-wrap .cns-se-copy-btn:hover {
    background: #cbd5e1 !important;
}

/* ── Result Score Hero ── */
body .cns-se-total-score-hero,
.cns-se-wrap .cns-se-total-score-hero {
    background: linear-gradient(135deg, #f5f3ff, #ede9fe) !important;
    background-color: #f5f3ff !important;
    color: #1e1b4b !important;
    border: 1px solid #c4b5fd !important;
}
body .cns-se-total-score-num,
.cns-se-wrap .cns-se-total-score-num {
    color: #4c1d95 !important;
}
body .cns-se-total-score-num span,
.cns-se-wrap .cns-se-total-score-num span {
    color: #7c3aed !important;
    opacity: 1 !important;
}
body .cns-se-total-score-pct,
.cns-se-wrap .cns-se-total-score-pct {
    color: #5b21b6 !important;
    opacity: 1 !important;
}

/* ── Secondary Button ── */
body .cns-se-btn-secondary,
.cns-se-wrap .cns-se-btn-secondary {
    background: #ffffff !important;
    color: #374151 !important;
    border: 1.5px solid #cbd5e1 !important;
}
body .cns-se-btn-secondary:hover,
.cns-se-wrap .cns-se-btn-secondary:hover {
    background: #f1f5f9 !important;
    color: #1e293b !important;
    border-color: #94a3b8 !important;
}

/* ── Lang switch button ── */
body .cns-se-lang-switch-btn,
.cns-se-wrap .cns-se-lang-switch-btn {
    background: #fff !important;
    color: #5b21b6 !important;
    border: 1.5px solid #c4b5fd !important;
}
body .cns-se-lang-switch-btn:hover,
.cns-se-wrap .cns-se-lang-switch-btn:hover {
    background: #f5f3ff !important;
}


/* ═══════════════════════════════════════════════════════════════════
   EXERCISE SHEETS — Student Browse & Reader
   Matches the Study-Notes design language exactly.
   ═══════════════════════════════════════════════════════════════════ */

/* ── Exercise Sheet Card (browse list) ───────────────────────────── */
.cns-ex-sheet-card {
    display: flex;
    align-items: center;
    gap: 14px;
    background: var(--cns-card);
    border: 1.5px solid var(--cns-border);
    border-radius: var(--cns-radius);
    padding: 14px 18px;
    transition: border-color .2s, box-shadow .2s, transform .2s;
    cursor: pointer;
}
.cns-ex-sheet-card:hover {
    border-color: var(--cns-primary);
    box-shadow: 0 2px 12px rgba(109,40,217,.1);
    transform: translateX(2px);
}
.cns-ex-sheet-icon {
    width: 42px; height: 42px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--cns-primary), #8b5cf6);
    color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-size: 18px; flex-shrink: 0;
}
.cns-ex-sheet-info { flex: 1; min-width: 0; }
.cns-ex-sheet-title {
    font-weight: 700; font-size: 15px; color: var(--cns-text);
    margin-bottom: 3px;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.cns-ex-sheet-chapter {
    font-size: 12px; color: var(--cns-text-sec);
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
    display: flex; align-items: center; gap: 4px;
}
.cns-ex-sheet-arrow { color: var(--cns-muted); flex-shrink: 0; transition: color .2s; }
.cns-ex-sheet-card:hover .cns-ex-sheet-arrow { color: var(--cns-primary); }

/* ── Exercise Reader — Header (matches .cns-se-note-header) ────── */
.cns-ex-reader-header {
    background: linear-gradient(135deg, #f5f3ff, #ede9fe);
    color: #1e1b4b;
    border: 1px solid #c4b5fd;
    border-radius: var(--cns-radius);
    padding: 24px 28px;
    margin-bottom: 24px;
}
.cns-ex-reader-breadcrumb {
    display: flex; align-items: center; gap: 8px;
    margin-bottom: 8px; color: #374151;
}
.cns-ex-reader-title {
    font-size: 22px; font-weight: 800; margin: 4px 0; color: #1e1b4b;
}
.cns-ex-reader-lesson {
    font-size: 14px; color: #5b21b6; margin-top: 4px;
    display: flex; align-items: center; gap: 6px;
}
.cns-ex-reader-header-content {
    display: flex; justify-content: space-between;
    align-items: flex-start; flex-wrap: wrap; gap: 12px;
}
.cns-ex-reader-actions {
    display: flex; gap: 8px; flex-wrap: wrap; align-items: center;
}

/* ── Exercise Reader — Content Wrapper (matches .cns-se-note-content-wrap) ── */
.cns-ex-content-wrap {
    background: #fff;
    border: 1px solid var(--cns-border);
    border-radius: var(--cns-radius);
    overflow: visible;
    box-shadow: var(--cns-shadow);
}
.cns-ex-content {
    padding: 32px;
    font-size: 15px;
    line-height: 1.9;
    max-width: 860px;
    margin: 0 auto;
    overflow-x: auto;
    border-radius: 0 0 var(--cns-radius) var(--cns-radius);
    font-family: 'Inter', 'Noto Sans Bengali', 'Hind Siliguri', Arial, sans-serif !important;
}

/* ── Exercise content inner styles (mirrors .cns-notes-content) ── */
.cns-ex-content,
.cns-ex-content p, .cns-ex-content li,
.cns-ex-content td, .cns-ex-content th,
.cns-ex-content h1, .cns-ex-content h2,
.cns-ex-content h3, .cns-ex-content h4,
.cns-ex-content h5, .cns-ex-content h6,
.cns-ex-content blockquote, .cns-ex-content span {
    font-family: 'Inter', 'Noto Sans Bengali', 'Hind Siliguri', Arial, sans-serif !important;
}

/* Exercise headings: same approach as notes — high-specificity, no !important on color */
.cns-ex-content h2 {
    border-left: 4px solid #3b82f6; padding-left: 14px;
    margin: 32px 0 14px; font-size: 19px !important; font-weight: 800 !important;
    padding-bottom: 6px; background: none; border-bottom: none;
    color: #1e40af; /* default — AI inline color overrides this */
}
.cns-ex-content h3 {
    margin: 22px 0 10px !important; font-size: 16px !important; font-weight: 700 !important;
    /* No display:flex, no ::before dot */
    color: #1e3a8a; /* default only */
}
.cns-ex-content h3::before { content: none !important; display: none !important; }
.cns-ex-content h4 { color: #374151; margin: 16px 0 6px !important; font-size: 15px !important; font-weight: 700 !important; }
.cns-ex-content p  { margin: 8px 0 !important; }
.cns-ex-content ul { padding-left: 22px; margin: 8px 0 14px; }
.cns-ex-content ol { padding-left: 22px; margin: 8px 0 14px; }
.cns-ex-content li { margin-bottom: 6px; line-height: 1.8; }

/* Better table — striped rows */
.cns-ex-content table {
    width: 100%; border-collapse: collapse;
    margin: 20px 0; font-size: 14px;
    border: 1.5px solid #e2e8f0; border-radius: 10px; overflow: hidden;
    box-shadow: 0 1px 6px rgba(0,0,0,.05);
}
.cns-ex-content thead th,
.cns-ex-content th {
    background: linear-gradient(135deg,#1e40af,#1d4ed8) !important;
    color: #fff !important; padding: 11px 14px; text-align: left;
    font-size: 13px; font-weight: 700; letter-spacing: .3px;
}
.cns-ex-content th *,
.cns-ex-content thead th * { color: #fff !important; }
.cns-ex-content td { padding: 10px 14px; border-bottom: 1px solid #f1f5f9; }
.cns-ex-content tbody tr:nth-child(even) td { background: #f8fafc; }
.cns-ex-content tbody tr:hover td { background: #eff6ff; }

/* Blockquote */
.cns-ex-content blockquote {
    background: #f0f9ff; border-left: 4px solid #0ea5e9;
    padding: 14px 18px; margin: 18px 0; border-radius: 0 8px 8px 0;
    color: #0c4a6e; font-style: normal; font-size: 14.5px;
}
.cns-ex-content blockquote::before {
    content: '"'; font-size: 36px; color: #0ea5e9;
    line-height: 1; display: block; margin-bottom: -8px;
    font-family: Georgia, serif; opacity: .6;
}

.cns-ex-content hr {
    border: none; border-top: 2px solid #e2e8f0; margin: 28px 0;
}

.cns-ex-content strong { color: #dc2626; font-weight: 700; }
.cns-ex-content code {
    background: #f1f5f9; padding: 2px 7px; border-radius: 4px;
    font-size: .9em; color: #0f172a; font-family: 'Courier New', monospace;
}

/* Key-term highlight boxes */
.cns-ex-content .cns-keyterm {
    display: inline-block; background: #fefce8;
    border: 1px solid #fde68a; border-radius: 5px;
    padding: 1px 8px; font-weight: 700; color: #92400e;
    font-size: .95em;
}
.cns-ex-content .cns-box-important,
.cns-ex-content .important-box {
    background: #fff7ed; border: 1.5px solid #fed7aa;
    border-radius: 10px; padding: 14px 18px; margin: 16px 0;
    color: #9a3412; font-size: 14px;
}
.cns-ex-content .cns-box-tip,
.cns-ex-content .tip-box {
    background: #f0fdf4; border: 1.5px solid #86efac;
    border-radius: 10px; padding: 14px 18px; margin: 16px 0;
    color: #166534; font-size: 14px;
}

/* SVG diagrams */
.cns-ex-content svg { max-width: 100%; height: auto; display: block; margin: 16px auto; overflow: visible; }
.cns-ex-content svg text { font-family: Arial, sans-serif; }

/* Chart blocks */
.cns-ex-content .cns-chart-block { margin: 20px auto; padding: 16px 18px 18px; background: #fafafa; border-radius: 10px; border: 1px solid #e2e8f0; box-sizing: border-box; overflow: hidden; }
.cns-ex-content .cns-chart-block canvas { max-width: 100% !important; display: block; margin: 0 auto; }
.cns-ex-content .cns-chart-block p { margin: 0 0 8px; }

/* Math / KaTeX */
.cns-ex-content .katex { font-size: 1.05em; }
.cns-ex-content .katex-display { margin: 12px 0; overflow-x: auto; overflow-y: hidden; }
.cns-ex-content .katex-display > .katex { white-space: normal; }

/* Preserve flex / grid / inline-block for exercise AI-generated layouts */
.cns-ex-content div[style*="display:flex"],
.cns-ex-content div[style*="display: flex"]      { display: flex !important; }
.cns-ex-content div[style*="display:inline-flex"],
.cns-ex-content div[style*="display: inline-flex"]{ display: inline-flex !important; }
.cns-ex-content div[style*="display:grid"],
.cns-ex-content div[style*="display: grid"]       { display: grid !important; }
.cns-ex-content div[style*="display:inline-block"],
.cns-ex-content div[style*="display: inline-block"],
.cns-ex-content span[style*="display:inline-block"],
.cns-ex-content span[style*="display: inline-block"] { display: inline-block !important; max-width:100%; box-sizing:border-box; }
.cns-ex-content div[style*="inline-block"],
.cns-ex-content span[style*="inline-block"] { display: inline-block !important; max-width: 100%; box-sizing: border-box; }
.cns-ex-content > div[style*="display:flex"],
.cns-ex-content > div[style*="display: flex"]     { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.cns-ex-content div[style*="text-align:center"],
.cns-ex-content div[style*="text-align: center"]  { overflow-x: auto; padding: 4px 0; }

/* ── Exercise Reader Toolbar (matches notes reader toolbar) ─────── */
.cns-ex-reader-toolbar {
    display: flex; align-items: center; gap: 10px;
    padding: 8px 14px; margin-bottom: 0;
    background: #fafbff; border: 1px solid #e8eaf2;
    border-radius: 10px 10px 0 0;
    border-bottom: none;
    font-size: 13px; color: var(--cns-text-sec);
}
.cns-ex-reader-toolbar-sep { flex: 1; }
.cns-ex-reader-toolbar .cns-fontsize-btn {
    padding: 3px 9px; font-size: 13px; font-weight: 700; cursor: pointer;
    background: #fff; border: 1.5px solid #dde0f0; border-radius: 6px;
    color: #4c5480; transition: background .15s, border-color .15s;
    font-family: inherit; line-height: 1.4;
}
.cns-ex-reader-toolbar .cns-fontsize-btn:hover { background: #ede9fe; border-color: #a78bfa; color: #5b21b6; }

/* ── Exercise Upload Zone (Admin) ────────────────────────────────── */
.cns-ex-upload-zone {
    border: 2px dashed #94a3b8;
    border-radius: var(--cns-radius);
    padding: 24px 16px;
    text-align: center;
    cursor: pointer;
    transition: all .2s;
    background: #fff;
    font-size: 13px;
    color: #64748b;
}
.cns-ex-upload-zone:hover,
.cns-ex-upload-zone.drag-over {
    border-color: var(--cns-primary);
    background: #f0f9ff;
    color: var(--cns-primary);
}
.cns-ex-upload-zone.has-file {
    border-color: #22c55e;
    background: #f0fdf4;
    color: #166534;
}

/* ── Exercise Mobile ─────────────────────────────────────────────── */
@media (max-width: 600px) {
    .cns-ex-content { padding: 18px 14px; }
    .cns-ex-reader-title { font-size: 18px; }
    .cns-ex-reader-header { padding: 18px; }
    .cns-ex-sheet-title { font-size: 14px; }
}

/* ── Exercise Forced Light-Theme Overrides ────────────────────────── */
body .cns-ex-reader-header,
.cns-se-wrap .cns-ex-reader-header {
    background: linear-gradient(135deg, #f5f3ff, #ede9fe) !important;
    background-color: #f5f3ff !important;
    color: #1e1b4b !important;
    border: 1px solid #c4b5fd !important;
    box-shadow: none !important;
}
body .cns-ex-reader-header *,
.cns-se-wrap .cns-ex-reader-header * {
    color: #1e1b4b !important;
}
body .cns-ex-reader-header .cns-se-back-link,
.cns-se-wrap .cns-ex-reader-header .cns-se-back-link {
    color: #5b21b6 !important;
}
body .cns-ex-reader-title,
.cns-se-wrap .cns-ex-reader-title {
    color: #1e1b4b !important;
}
body .cns-ex-reader-lesson,
.cns-se-wrap .cns-ex-reader-lesson {
    color: #5b21b6 !important;
    opacity: 1 !important;
}

/* ═══════════════════════════════════════════════════════════════════
   CNS ALL-NOTES CARD DASHBOARD — Additional Styles
   ═══════════════════════════════════════════════════════════════════ */

/* Stats bar */
.cns-nd-statsbar {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    margin-bottom: 18px;
}
.cns-nd-stat {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    padding: 14px 16px;
}
.cns-nd-stat-n {
    font-size: 26px;
    font-weight: 800;
    color: #1e1b4b;
}
.cns-nd-stat-l {
    font-size: 12px;
    color: #64748b;
    margin-top: 2px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .3px;
}

/* Filter bar */
.cns-nd-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 14px 16px;
    margin-bottom: 14px;
}
.cns-nd-filters input,
.cns-nd-filters select {
    font-size: 13px;
    padding: 7px 11px;
    border-radius: 8px;
    border: 1px solid #cbd5e1;
    background: #fff;
    color: #0f172a;
    height: 36px;
}
.cns-nd-filters input { flex: 1; min-width: 180px; }

/* Grade chips */
.cns-nd-chips { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; }
.cns-nd-chip {
    font-size: 12px;
    padding: 4px 12px;
    border-radius: 20px;
    background: #f1f5f9;
    border: 1.5px solid #cbd5e1;
    color: #475569;
    cursor: pointer;
    font-weight: 600;
    transition: all .15s;
    user-select: none;
}
.cns-nd-chip:hover,
.cns-nd-chip.active {
    background: #ede9fe;
    border-color: #a78bfa;
    color: #5b21b6;
}

/* Results info */
.cns-nd-info { font-size: 12px; color: #64748b; margin-bottom: 12px; font-weight: 600; }

/* Card grid */
.cns-nd-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 14px;
}

/* Individual card */
.cns-nd-card {
    background: #fff;
    border: 1.5px solid #e2e8f0;
    border-radius: 12px;
    padding: 18px;
    cursor: pointer;
    transition: border-color .15s, box-shadow .15s;
}
.cns-nd-card:hover {
    border-color: #a78bfa;
    box-shadow: 0 4px 16px rgba(109, 40, 217, .1);
}
.cns-nd-card.exp {
    border-color: #6d28d9;
    box-shadow: 0 4px 16px rgba(109, 40, 217, .15);
}
.cns-nd-card-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 8px;
    margin-bottom: 10px;
}
.cns-nd-num {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: #ede9fe;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 800;
    color: #5b21b6;
    flex-shrink: 0;
}
.cns-nd-brow { display: flex; flex-wrap: wrap; gap: 4px; justify-content: flex-end; }
.cns-nd-title { font-size: 14px; font-weight: 700; color: #0f172a; line-height: 1.4; margin-bottom: 3px; }
.cns-nd-sub   { font-size: 12px; color: #475569; margin-bottom: 10px; line-height: 1.4; }
.cns-nd-badges { display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 8px; }

/* Inline badge utility class (nb = note badge) */
.nb {
    display: inline-flex;
    align-items: center;
    gap: 3px;
    font-size: 11px;
    font-weight: 700;
    padding: 3px 8px;
    border-radius: 20px;
    line-height: 1.4;
}
.nb-grade { background: #ede9fe; color: #4c1d95; }
.nb-subj  { background: #dcfce7; color: #166534; }
.nb-en    { background: #e0f2fe; color: #0369a1; }
.nb-bn    { background: #fef9c3; color: #854d0e; }
.nb-pub   { background: #dcfce7; color: #166534; }
.nb-draft { background: #f1f5f9; color: #475569; }
.nb-mcq   { background: #fee2e2; color: #991b1b; }
.nb-cq    { background: #fdf2f8; color: #9d174d; }
.nb-gen   { background: #dcfce7; color: #15803d; }
.nb-tf    { background: #f0fdfa; color: #0f766e; }
.nb-fib   { background: #fff7ed; color: #c2410c; }
.nb-match { background: #f5f3ff; color: #6d28d9; }

.cns-nd-footer { font-size: 11px; color: #94a3b8; margin-top: 8px; }

/* Expanded detail */
.cns-nd-detail { margin-top: 12px; padding-top: 12px; border-top: 1px solid #f1f5f9; }
.cns-nd-detail-row {
    font-size: 12px;
    color: #475569;
    display: flex;
    gap: 4px;
    margin-bottom: 6px;
    align-items: center;
}
.cns-nd-detail-row strong { color: #0f172a; font-weight: 700; min-width: 90px; flex-shrink: 0; }
.cns-nd-wbar   { height: 4px; border-radius: 2px; background: #e2e8f0; margin-top: 4px; flex: 1; }
.cns-nd-wfill  { height: 100%; border-radius: 2px; background: linear-gradient(90deg, #6d28d9, #8b5cf6); }

/* Card action buttons */
.cns-nd-actions { display: flex; gap: 6px; margin-top: 12px; flex-wrap: wrap; }
.cns-nd-actions a,
.cns-nd-actions button {
    font-size: 12px;
    padding: 6px 12px;
    border-radius: 7px;
    border: 1.5px solid #cbd5e1;
    background: #fff;
    color: #374151;
    cursor: pointer;
    text-decoration: none;
    font-weight: 600;
    transition: background .12s;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}
.cns-nd-actions a:hover,
.cns-nd-actions button:hover { background: #f1f5f9; }
.cns-nd-actions a.pri  { background: #ede9fe; border-color: #a78bfa; color: #5b21b6; }
.cns-nd-actions a.suc  { background: #dcfce7; border-color: #86efac; color: #166534; }
.cns-nd-actions a.warn { background: #fef3c7; border-color: #fde68a; color: #92400e; }
.cns-nd-actions a.dan  { background: #fee2e2; border-color: #fca5a5; color: #991b1b; }

/* Empty state in grid */
.cns-nd-empty { text-align: center; padding: 48px 20px; color: #94a3b8; grid-column: 1 / -1; }
.cns-nd-empty i { font-size: 36px; margin-bottom: 12px; display: block; }

/* Responsive */
@media (max-width: 600px) {
    .cns-nd-statsbar { grid-template-columns: 1fr 1fr; }
    .cns-nd-grid     { grid-template-columns: 1fr; }
}

/* ═══════════════════════════════════════════════════════════════════
   UPLOADED-HTML WRAPPER (v1.4)
   Styles applied to notes that were imported from a user-uploaded
   .html file. The extractor wraps all uploaded content in
   <div class="cns-uploaded-html"> and scopes any <style> blocks
   under this class, so the uploaded CSS can never affect the rest
   of the site.
   ═══════════════════════════════════════════════════════════════════ */
.cns-uploaded-html {
    /* Isolate layout context */
    display: block;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    overflow-wrap: break-word;
    word-wrap: break-word;

    /* Base typography — inherit from parent so uploaded notes match
       the rest of the student / print view unless they override it */
    font-family: inherit;
    color: inherit;
    line-height: 1.6;
}

/* Safety: images should never blow out the container */
.cns-uploaded-html img {
    max-width: 100%;
    height: auto;
    display: inline-block;
}

/* Safety: tables should scroll horizontally on narrow screens rather
   than break the page layout */
.cns-uploaded-html table {
    max-width: 100%;
}

/* Ensure uploaded <pre>/<code> blocks wrap instead of overflowing */
.cns-uploaded-html pre,
.cns-uploaded-html code {
    white-space: pre-wrap;
    word-break: break-word;
}

/* Print: let uploaded content use its own styling (already scoped by
   extractor), but prevent accidental page breaks inside key blocks */
@media print {
    .cns-uploaded-html h1,
    .cns-uploaded-html h2,
    .cns-uploaded-html h3 { page-break-after: avoid; }
    .cns-uploaded-html table,
    .cns-uploaded-html figure,
    .cns-uploaded-html blockquote { page-break-inside: avoid; }
    .cns-uploaded-html img { page-break-inside: avoid; }
}