/* ===== Essay Teacher - aligned with essay_v1 design language ===== */
:root {
    --bg-surface: rgba(255, 255, 255, 0.6);
    --bg-surface-hover: rgba(255, 255, 255, 0.8);
    --bg-surface-solid: #ffffff;
    --bg-surface-faint: rgba(255, 255, 255, 0.06);
    --border-default: rgba(0, 0, 0, 0.15);
    --selection-bg: rgba(99, 102, 241, 0.1);
    --bar-track: rgba(0, 0, 0, 0.1);
    --primary-gradient: linear-gradient(135deg, #6366F1 0%, #818CF8 100%);
    --danger: #EF4444;
}
[data-theme=dark] {
    --bg-surface: rgba(255, 255, 255, 0.05);
    --bg-surface-hover: rgba(255, 255, 255, 0.08);
    --bg-surface-solid: #1a1b1e;
    --bg-surface-faint: rgba(255, 255, 255, 0.04);
    --border-default: rgba(255, 255, 255, 0.1);
    --selection-bg: rgba(129, 140, 248, 0.1);
    --bar-track: rgba(255, 255, 255, 0.1);
    --danger: #FB7185;
}

.et-wrap {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 20px 60px;
    position: relative;
    z-index: 1;
}

/* Hero */
.et-hero { text-align: center; margin-bottom: 28px; }
.et-hero-title {
    font-size: 28px; font-weight: 700;
    background: linear-gradient(135deg, var(--primary), #818CF8);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.et-hero-sub { color: var(--text3); margin-top: 8px; font-size: 14px; }

/* Tabs */
.et-tabs {
    display: flex; gap: 4px; margin-bottom: 24px;
    background: var(--card-surface); backdrop-filter: blur(12px);
    border: 1px solid var(--border); border-radius: 12px;
    padding: 4px; max-width: 320px;
}
.et-tab {
    flex: 1; text-align: center; padding: 10px;
    font-size: 14px; font-weight: 500; color: var(--text3);
    border-radius: 8px; cursor: pointer; transition: all 0.3s ease;
}
.et-tab.active {
    background: var(--primary-gradient); color: #fff;
    box-shadow: 0 4px 12px rgba(99,102,241,0.3);
}
.et-tab-content { display: none; }
.et-tab-content.active { display: block; }

/* Card */
.et-card {
    background: var(--card-surface); backdrop-filter: blur(12px);
    border: 1px solid var(--border); border-radius: 16px;
    padding: 24px; margin-bottom: 20px;
}

/* Exam type selector */
.exam-type-selector { display: flex; gap: 12px; margin-bottom: 24px; }
.exam-type-card {
    flex: 1; padding: 16px; text-align: center;
    background: var(--card-surface); border: 2px solid transparent;
    border-radius: 12px; cursor: pointer;
    transition: all 0.3s ease;
}
.exam-type-card:hover { border-color: rgba(99,102,241,0.2); }
.exam-type-card.active {
    border-color: var(--primary);
    background: rgba(99,102,241,0.1);
    box-shadow: 0 0 20px rgba(99,102,241,0.2);
}
.exam-type-card .name { font-size: 15px; font-weight: 600; color: var(--text); }
.exam-type-card .desc { font-size: 12px; color: var(--text3); margin-top: 4px; }

/* Input groups */
.et-input-group { margin-bottom: 20px; }
.et-input-group label {
    display: block; font-size: 14px; font-weight: 500;
    margin-bottom: 8px; color: var(--text2);
}
.et-required { color: var(--primary); }
.et-optional { color: var(--text3); font-size: 12px; font-weight: 400; }
.et-char-count { text-align: right; font-size: 12px; color: var(--text3); margin-top: 6px; }

.et-select {
    width: 100%; padding: 10px 14px;
    background: rgba(0,0,0,0.04); border: 1px solid var(--border);
    border-radius: 10px; color: var(--text); font-size: 14px;
}
[data-theme="dark"] .et-select { background: rgba(255,255,255,0.04); }

/* Buttons */
.et-btn-grade {
    width: 100%; padding: 14px;
    background: linear-gradient(135deg, var(--primary), #818CF8);
    color: #fff; font-size: 16px; font-weight: 700;
    border: none; border-radius: 12px; cursor: pointer;
    transition: all 0.3s ease;
}
.et-btn-grade:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 30px rgba(99,102,241,0.3);
}
.et-btn-grade:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }
.et-btn-grade:active { transform: translateY(0); }

.et-btn-back {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 8px 16px; background: var(--card-surface);
    border: 1px solid var(--border); border-radius: 8px;
    color: var(--text); cursor: pointer; font-size: 13px;
    margin-bottom: 20px; transition: all 0.3s;
}
.et-btn-back:hover { background: rgba(99,102,241,0.08); }

.et-btn-send {
    padding: 10px 24px;
    background: linear-gradient(135deg, #10B981, #34D399);
    color: #fff; font-size: 14px; font-weight: 600;
    border: none; border-radius: 10px; cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex; align-items: center; gap: 6px;
}
.et-btn-send:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(16,185,129,0.3); }

.et-btn-print-single {
    padding: 10px 20px;
    background: var(--card-surface); border: 1px solid var(--border);
    border-radius: 10px; color: var(--text2); font-size: 14px;
    cursor: pointer; transition: all 0.3s;
    display: inline-flex; align-items: center; gap: 6px;
}
.et-btn-print-single:hover { border-color: var(--primary); color: var(--primary); }

.et-btn-sm {
    padding: 6px 12px; font-size: 13px; border-radius: 8px;
    cursor: pointer; transition: all 0.3s; border: none;
}
.et-btn-primary {
    background: var(--primary-gradient); color: #fff;
}
.et-btn-outline {
    background: var(--card-surface); border: 1px solid var(--border);
    color: var(--text2);
}
.et-btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.et-btn-danger-text {
    background: transparent; color: var(--danger); font-size: 12px;
    padding: 2px 8px;
}
.et-btn-danger-text:hover { text-decoration: underline; }

/* Result page */
.et-result-page { display: none; }
.et-result-page.active { display: block; }
#et-input-page.hidden { display: none; }

/* Surgery layout */
.et-surgery-layout { display: flex; gap: 24px; align-items: flex-start; }
.et-surgery-panel { flex: 1; min-width: 0; }
.et-score-panel { width: 320px; flex-shrink: 0; position: sticky; top: 80px; }

.et-surgery-title {
    font-size: 16px; font-weight: 600; margin-bottom: 16px;
    display: flex; align-items: center; gap: 8px; color: var(--text);
}

/* Annotated text */
.et-annotated-text {
    font-family: 'Georgia', serif; font-size: 16px; line-height: 2.2;
    padding: 24px; background: rgba(0,0,0,0.02);
    border-radius: 12px; border: 1px solid var(--border);
    white-space: pre-wrap; word-break: break-word; color: var(--text);
}
[data-theme="dark"] .et-annotated-text { background: rgba(0,0,0,0.2); }

/* Annotation spans - same as essay_v1 */
.et-ann-span {
    cursor: pointer; padding: 2px 4px; border-radius: 4px;
    transition: all 0.25s ease; position: relative; display: inline;
}
.et-ann-span:hover { transform: scale(1.05); filter: brightness(1.3); }
.et-ann-span.type-error { background: rgba(239,68,68,0.15); border-bottom: 2px solid #ef4444; }
.et-ann-span.type-upgrade { background: rgba(59,130,246,0.15); border-bottom: 2px solid #3b82f6; }
.et-ann-span.type-restructure { background: rgba(168,85,247,0.15); border-bottom: 2px solid #a855f7; }
.et-ann-span.type-highlight { background: rgba(16,185,129,0.15); border-bottom: 2px solid var(--success); }
.et-ann-span.type-optimize { background: rgba(234,179,8,0.15); border-bottom: 2px solid #eab308; }

/* Diagnostic card */
.et-diagnostic-card {
    display: none; position: fixed; z-index: 50;
    width: 320px; background: var(--card-surface);
    backdrop-filter: blur(30px); border: 1px solid var(--border);
    border-radius: 16px; padding: 16px; box-shadow: 0 8px 32px rgba(0,0,0,0.15);
}
.et-diag-header { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; }
.et-diag-type { font-size: 12px; padding: 2px 8px; border-radius: 4px; font-weight: 600; }
.et-diag-type.error { background: rgba(239,68,68,0.15); color: #ef4444; }
.et-diag-type.upgrade { background: rgba(59,130,246,0.15); color: #3b82f6; }
.et-diag-type.restructure { background: rgba(168,85,247,0.15); color: #a855f7; }
.et-diag-type.highlight { background: rgba(16,185,129,0.15); color: var(--success); }
.et-diag-type.optimize { background: rgba(234,179,8,0.15); color: #eab308; }
.et-diag-original { font-family: 'Georgia', serif; font-size: 15px; color: var(--text); margin-bottom: 8px; }
.et-diag-suggestion { font-size: 14px; color: var(--text2); }
.et-diag-suggestion b { color: var(--primary); }
.et-diag-tip { font-size: 12px; color: var(--text3); margin-top: 8px; padding-top: 8px; border-top: 1px solid var(--border); }

/* Score panel */
.et-score-card { text-align: center; padding: 28px 20px; }
.et-score-num {
    font-size: 48px; font-weight: 800;
    background: linear-gradient(135deg, var(--primary), #818CF8);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.et-score-max { font-size: 16px; color: var(--text3); margin-top: 4px; }
.et-score-grade {
    display: inline-block; margin-top: 12px; padding: 4px 16px;
    border-radius: 20px; font-size: 13px; font-weight: 600;
    background: rgba(99,102,241,0.1); color: var(--primary);
}

/* Dimension bars */
.et-dims-card { padding: 20px; }
.et-dim-item { margin-bottom: 14px; }
.et-dim-item:last-child { margin-bottom: 0; }
.et-dim-header { display: flex; justify-content: space-between; font-size: 13px; margin-bottom: 4px; }
.et-dim-name { color: var(--text2); font-weight: 500; }
.et-dim-score { color: var(--text3); }
.et-dim-bar {
    height: 6px; background: var(--bar-track); border-radius: 3px; overflow: hidden;
}
.et-dim-bar-fill {
    height: 100%; border-radius: 3px;
    background: var(--primary-gradient);
    transition: width 0.8s ease;
}
.et-dim-bar-fill.low { background: linear-gradient(135deg, #f59e0b, #fbbf24); }
.et-dim-bar-fill.critical { background: linear-gradient(135deg, #ef4444, #f87171); }

/* Stats card */
.et-stats-card { padding: 16px; }
.et-stat-row {
    display: flex; justify-content: space-between;
    padding: 6px 0; font-size: 13px;
    border-bottom: 1px solid var(--border);
}
.et-stat-row:last-child { border-bottom: none; }
.et-stat-label { color: var(--text3); }
.et-stat-value { color: var(--text); font-weight: 500; }

/* Teacher comment */
.et-comment-section { margin-top: 20px; }
.et-comment-title {
    font-size: 15px; font-weight: 600; margin-bottom: 10px;
    display: flex; align-items: center; gap: 6px; color: var(--text);
}
.et-comment-textarea {
    width: 100%; min-height: 100px; padding: 14px;
    background: rgba(0,0,0,0.02); border: 1px solid var(--border);
    border-radius: 12px; color: var(--text); font-size: 14px;
    line-height: 1.8; resize: vertical; font-family: inherit;
}
[data-theme="dark"] .et-comment-textarea { background: rgba(0,0,0,0.2); }
.et-comment-textarea:focus { outline: none; border-color: var(--primary); }

/* ===== Batch mode ===== */
.et-batch-step { display: none; }
.et-batch-step.active { display: block; }

.et-student-row {
    background: rgba(0,0,0,0.02); border: 1px solid var(--border);
    border-radius: 12px; padding: 12px; margin-bottom: 10px;
}
[data-theme="dark"] .et-student-row { background: rgba(255,255,255,0.02); }
.et-student-row-header {
    display: flex; align-items: center; gap: 10px; margin-bottom: 8px;
}
.et-student-name {
    padding: 6px 10px; background: var(--card-surface);
    border: 1px solid var(--border); border-radius: 8px;
    color: var(--text); font-size: 13px;
}
.et-student-status {
    font-size: 12px; padding: 2px 8px; border-radius: 4px;
    background: rgba(99,102,241,0.1); color: var(--primary);
    margin-left: auto;
}
.et-student-status.confirmed { background: rgba(16,185,129,0.15); color: var(--success); }

.et-ocr-quota {
    font-size: 12px; color: var(--text3);
    padding: 2px 8px; background: rgba(0,0,0,0.04); border-radius: 4px;
}
[data-theme="dark"] .et-ocr-quota { background: rgba(255,255,255,0.06); }

.et-ocr-drop {
    border: 2px dashed var(--border); border-radius: 12px;
    padding: 20px; text-align: center; cursor: pointer;
    transition: all 0.3s;
}
.et-ocr-drop:hover { border-color: var(--primary); background: rgba(99,102,241,0.04); }

/* Confirm step */
.et-confirm-warning {
    display: flex; align-items: center; gap: 10px;
    padding: 14px 16px; background: rgba(239,68,68,0.08);
    border: 1px solid rgba(239,68,68,0.2); border-radius: 12px;
    margin-bottom: 16px; font-size: 14px; color: var(--text2);
}
.et-confirm-item {
    display: flex; align-items: flex-start; gap: 12px;
    padding: 14px; background: rgba(0,0,0,0.02); border: 1px solid var(--border);
    border-radius: 12px; margin-bottom: 10px;
}
[data-theme="dark"] .et-confirm-item { background: rgba(255,255,255,0.02); }
.et-confirm-item.confirmed {
    border-color: rgba(16,185,129,0.3); background: rgba(16,185,129,0.04);
}
.et-confirm-checkbox {
    width: 20px; height: 20px; border-radius: 6px;
    border: 2px solid var(--border); cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0; margin-top: 2px; transition: all 0.3s;
}
.et-confirm-checkbox.checked {
    background: var(--success); border-color: var(--success);
}
.et-confirm-info { flex: 1; min-width: 0; }
.et-confirm-name { font-size: 14px; font-weight: 600; color: var(--text); margin-bottom: 4px; }
.et-confirm-preview {
    font-size: 13px; color: var(--text3); font-family: 'Georgia', serif;
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}

/* Progress */
.et-batch-progress-ring { position: relative; display: inline-block; }
.et-batch-progress-text {
    position: absolute; top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    font-size: 24px; font-weight: 700; color: var(--primary);
}
.et-batch-log {
    margin-top: 20px; max-height: 200px; overflow-y: auto;
    text-align: left; font-size: 12px; color: var(--text3);
    font-family: monospace; padding: 12px;
    background: rgba(0,0,0,0.04); border-radius: 8px;
    max-width: 500px; margin-left: auto; margin-right: auto;
}
[data-theme="dark"] .et-batch-log { background: rgba(0,0,0,0.2); }
.et-batch-log-line { padding: 2px 0; }
.et-batch-log-line.done { color: var(--success); }
.et-batch-log-line.active { color: var(--primary); font-weight: 600; }

/* Class report */
.et-class-report { margin-bottom: 20px; }
.et-report-title { font-size: 16px; font-weight: 600; margin-bottom: 16px; color: var(--text); }
.et-report-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; }
.et-report-stat {
    background: rgba(99,102,241,0.06); border-radius: 12px; padding: 16px;
}
.et-report-stat-label { font-size: 12px; color: var(--text3); margin-bottom: 4px; }
.et-report-stat-value { font-size: 20px; font-weight: 700; color: var(--text); }
.et-report-errors { margin-top: 16px; }
.et-report-error-item {
    display: flex; justify-content: space-between; align-items: center;
    padding: 8px 0; border-bottom: 1px solid var(--border); font-size: 13px;
}
.et-report-error-item:last-child { border-bottom: none; }
.et-report-error-name { color: var(--text2); }
.et-report-error-count {
    color: var(--primary); font-weight: 600;
}
.et-report-distribution { margin-top: 16px; }
.et-dist-bar { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
.et-dist-label { font-size: 12px; color: var(--text3); width: 60px; flex-shrink: 0; }
.et-dist-track { flex: 1; height: 20px; background: var(--bar-track); border-radius: 4px; overflow: hidden; }
.et-dist-fill { height: 100%; background: var(--primary-gradient); border-radius: 4px; transition: width 0.8s ease; }
.et-dist-count { font-size: 12px; color: var(--text2); width: 30px; text-align: right; }

/* Batch results list */
.et-batch-result-item {
    border: 1px solid var(--border); border-radius: 12px;
    margin-bottom: 10px; overflow: hidden;
}
.et-batch-result-header {
    display: flex; align-items: center; gap: 12px;
    padding: 12px 16px; cursor: pointer; transition: all 0.3s;
}
.et-batch-result-header:hover { background: rgba(99,102,241,0.04); }
.et-batch-result-name { font-size: 14px; font-weight: 600; color: var(--text); flex: 1; }
.et-batch-result-score {
    font-size: 16px; font-weight: 700; color: var(--primary);
}
.et-batch-result-status {
    font-size: 12px; padding: 2px 8px; border-radius: 4px;
}
.et-batch-result-status.sent { background: rgba(16,185,129,0.15); color: var(--success); }
.et-batch-result-status.unsent { background: rgba(234,179,8,0.15); color: #eab308; }
.et-batch-result-arrow { color: var(--text3); transition: transform 0.3s; }
.et-batch-result-arrow.open { transform: rotate(180deg); }

.et-batch-result-body {
    display: none; padding: 16px;
    border-top: 1px solid var(--border);
}
.et-batch-result-body.open { display: block; }
.et-batch-annotated {
    font-family: 'Georgia', serif; font-size: 14px; line-height: 2;
    padding: 16px; background: rgba(0,0,0,0.02); border-radius: 10px;
    margin-bottom: 12px; white-space: pre-wrap; word-break: break-word;
    color: var(--text);
}
[data-theme="dark"] .et-batch-annotated { background: rgba(0,0,0,0.2); }
.et-batch-comment {
    width: 100%; min-height: 60px; padding: 10px;
    background: rgba(0,0,0,0.02); border: 1px solid var(--border);
    border-radius: 8px; color: var(--text); font-size: 13px;
    resize: vertical; margin-bottom: 8px;
}
[data-theme="dark"] .et-batch-comment { background: rgba(0,0,0,0.2); }
.et-batch-dims { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 10px; }
.et-batch-dim {
    font-size: 12px; padding: 3px 8px; border-radius: 6px;
    background: rgba(99,102,241,0.1); color: var(--primary);
}

/* ===== Receipt modal ===== */
.et-receipt-overlay {
    display: none; position: fixed; top: 0; left: 0;
    width: 100%; height: 100%; background: rgba(0,0,0,0.7);
    backdrop-filter: blur(5px); z-index: 200;
    justify-content: center; align-items: center;
}
.et-receipt-overlay.active { display: flex; }
.et-receipt-modal {
    background: var(--bg-surface-solid); border-radius: 16px;
    padding: 30px; max-width: 90vw; max-height: 90vh; overflow-y: auto;
    box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}
.et-receipt-close {
    position: absolute; top: 16px; right: 20px;
    font-size: 24px; cursor: pointer; color: var(--text3);
    background: none; border: none;
}
.et-receipt-grid {
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 10px; padding: 0;
}
.et-receipt-card {
    border: 1px solid #ddd; border-radius: 8px; padding: 12px;
    text-align: center; page-break-inside: avoid;
    background: #fff;
}
.et-receipt-name { font-size: 14px; font-weight: 600; color: #333; margin-bottom: 4px; }
.et-receipt-score { font-size: 18px; font-weight: 700; color: #6366F1; margin-bottom: 4px; }
.et-receipt-comment { font-size: 11px; color: #666; line-height: 1.4; margin-bottom: 8px; min-height: 30px; }
.et-receipt-qr { width: 80px; height: 80px; margin: 0 auto; }
.et-receipt-qr img { width: 80px; height: 80px; }
.et-receipt-actions { display: flex; gap: 10px; justify-content: center; margin-top: 20px; }
@media print {
    body * { visibility: hidden; }
    .et-receipt-modal, .et-receipt-modal * { visibility: visible; }
    .et-receipt-modal { position: absolute; top: 0; left: 0; width: 100%; max-height: none; box-shadow: none; padding: 10px; }
    .et-receipt-close, .et-receipt-actions { display: none; }
    .et-receipt-grid { gap: 6px; }
    .et-receipt-card { border: 1px solid #ccc; }
}

/* ===== Loading overlay ===== */
.et-loading-overlay {
    display: none; position: fixed; top: 0; left: 0;
    width: 100%; height: 100%; background: rgba(0,0,0,0.7);
    backdrop-filter: blur(5px); z-index: 100;
    justify-content: center; align-items: center;
}
.et-loading-overlay.active { display: flex; }
.et-loading-content {
    text-align: center; background: var(--card-surface);
    padding: 2rem 2.5rem; border-radius: 20px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.15); color: var(--text2);
}
.et-pipeline-progress { display: flex; flex-direction: column; gap: 16px; width: 360px; max-width: 90vw; }
.et-pipeline-step { display: flex; align-items: center; gap: 12px; font-size: 14px; color: var(--text3); transition: all 0.4s; }
.et-pipeline-step.active { color: var(--text); }
.et-pipeline-step.done { color: var(--text2); }
.et-pipeline-step-icon {
    width: 32px; height: 32px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    background: rgba(99,102,241,0.05); border: 2px solid var(--border);
    font-size: 14px; transition: all 0.4s; flex-shrink: 0;
}
.et-pipeline-step.active .et-pipeline-step-icon {
    border-color: var(--primary); background: rgba(99,102,241,0.15);
    animation: etStepPulse 1.5s ease-in-out infinite;
}
.et-pipeline-step.done .et-pipeline-step-icon {
    border-color: var(--success); background: rgba(16,185,129,0.15);
}
.et-pipeline-step-label { flex: 1; }
.et-pipeline-step-time { font-size: 12px; color: var(--text3); }
.et-pipeline-step.done .et-pipeline-step-time { color: rgba(16,185,129,0.7); }
.et-pipeline-step.active .et-pipeline-step-label { font-weight: 600; }
@keyframes etStepPulse { 0%,100%{box-shadow:0 0 0 0 rgba(99,102,241,0.3)}50%{box-shadow:0 0 0 8px rgba(99,102,241,0)} }

/* ===== Toast ===== */
#et-toast-container { position: fixed; top: 20px; right: 20px; z-index: 300; display: flex; flex-direction: column; gap: 8px; }
.et-toast {
    padding: 10px 20px; border-radius: 10px; font-size: 14px;
    color: #fff; opacity: 0; transform: translateX(100px); transition: all 0.3s ease;
}
.et-toast.show { opacity: 1; transform: translateX(0); }
.et-toast.et-toast-info { background: var(--primary); }
.et-toast.et-toast-success { background: var(--success); }
.et-toast.et-toast-error { background: var(--danger); }

/* ===== History Modal ===== */
.et-history-overlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.5); display: none; align-items: center; justify-content: center;
    z-index: 1000;
}
.et-history-overlay.active { display: flex; }
.et-history-modal {
    background: var(--card-surface, #fff); border-radius: 16px; padding: 24px;
    width: 90%; max-width: 640px; max-height: 80vh; position: relative;
    box-shadow: 0 20px 60px rgba(0,0,0,0.15);
}
.et-history-item {
    display: flex; justify-content: space-between; align-items: center;
    padding: 12px 0; border-bottom: 1px solid var(--border, rgba(0,0,0,0.08));
}
.et-history-item:last-child { border-bottom: none; }
.et-history-info { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; font-size: 14px; }
.et-history-name { font-weight: 600; color: var(--text, #333); min-width: 60px; }
.et-history-score { color: #6366F1; font-weight: 700; }
.et-history-exam {
    font-size: 11px; padding: 2px 8px; border-radius: 4px;
    background: rgba(99,102,241,0.1); color: #6366F1;
}
.et-history-date { color: var(--text3, #999); font-size: 12px; margin-left: auto; }

/* Dark mode */
[data-theme="dark"] .et-history-modal { background: var(--card-surface, #1a1a2e); }
[data-theme="dark"] .et-history-item { border-color: rgba(255,255,255,0.08); }

/* ===== Send to Student Modal ===== */
.et-send-overlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.5); display: none; align-items: center; justify-content: center;
    z-index: 1001;
}
.et-send-overlay.active { display: flex; }
.et-send-modal {
    background: var(--card-surface, #fff); border-radius: 16px; padding: 24px;
    width: 90%; max-width: 480px; max-height: 80vh; position: relative;
    box-shadow: 0 20px 60px rgba(0,0,0,0.15);
}
.et-send-student-item {
    display: flex; align-items: center; gap: 8px; padding: 8px 12px;
    border-radius: 8px; cursor: pointer; transition: background 0.15s;
    font-size: 14px; color: var(--text, #333);
}
.et-send-student-item:hover { background: rgba(99,102,241,0.06); }
.et-send-student-item input { cursor: pointer; }

[data-theme="dark"] .et-send-modal { background: var(--card-surface, #1a1a2e); }
[data-theme="dark"] .et-send-student-item:hover { background: rgba(99,102,241,0.12); }