:root {
    --bg: #eef2f8;
    --panel: #f7f8fb;
    --panel-light: #f3f5f8;
    --panel-strong: #eef3fb;
    --white: #ffffff;
    --text: #1b2b3d;
    --muted: #6a7280;
    --line: #dfe6ee;
    --navy: #1d3557;
    --navy-deep: #142a4a;
    --brand: #1d2d5a;
    --brand-soft: #ebf0ff;
    --cyan: #1b3c78;
    --highlight: #fff3b0;
    --danger: #f4d7d7;
    --warning: #f6e6cc;
    --success: #dfeee8;
    --shadow: rgba(20, 42, 74, 0.08);
}

* {
    box-sizing: border-box;
}
html,
body {
    margin: 0;
    font-family: -apple-system, 'Apple SD Gothic Neo', Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
}

button,
input,
textarea {
    font: inherit;
}

.page-wrap[hidden] {
    display: none;
}

.page-wrap {
    width: 100%;
    height: 100vh;
    background: var(--bg);
    display: flex;
    flex-direction: column;
}

.topbar {
    height: 62px;
    flex-shrink: 0;
    background: radial-gradient(circle at 50% 0%, #2a3f73 0%, #16203f 55%, #0f1526 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 22px 0 18px;
}

.brand-block {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-link {
    text-decoration: none;
    color: inherit;
    cursor: pointer;
}

.brand-link:hover {
    opacity: 0.85;
}

.brand-badge {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: radial-gradient(circle at 50% 0%, #2a3f73 0%, #16203f 55%, #0f1526 100%);
    box-shadow:
        inset 0 1px 1px rgba(255, 255, 255, 0.15),
        0 3px 8px rgba(0, 0, 0, 0.45);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.brand-badge img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.brand-text {
    font-size: 24px;
    font-weight: 700;
    letter-spacing: -0.04em;
}

.topbar-meta {
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
    font-weight: 600;
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 18px;
}

.topbar-user {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12.5px;
    color: rgba(255, 255, 255, 0.85);
}

.ghost-btn.dark {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
    color: #fff;
}

.app-shell {
    flex: 1;
    min-height: 0;
    display: flex;
}

.sidebar {
    width: 208px;
    flex-shrink: 0;
    background: var(--panel);
    border-right: 1px solid var(--line);
    overflow-y: auto;
    padding: 14px 10px;
}

.sidebar-menu {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.sidebar-sep {
    height: 1px;
    background: var(--line);
    margin: 8px 4px;
}

.sidebar-item {
    display: block;
    box-sizing: border-box;
    width: 100%;
    text-align: left;
    text-decoration: none;
    border: none;
    background: transparent;
    border-radius: 8px;
    padding: 10px 12px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text);
    cursor: pointer;
    border-left: 3px solid transparent;
}

.sidebar-item:hover {
    background: #eef1f8;
}

.sidebar-item.active {
    background: var(--brand-soft);
    color: var(--brand);
    border-left-color: var(--brand);
    font-weight: 700;
}

.main-content {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    padding: 18px;
}

.content-info-bar {
    flex-shrink: 0;
    display: flex;
    align-items: baseline;
    gap: 10px;
    margin-bottom: 14px;
}

.content-info-action {
    margin-left: auto;
    flex-shrink: 0;
}

.content-view[hidden] {
    display: none;
}
.content-view {
    display: block;
}

#view-grade[hidden],
#view-pick-existing[hidden],
#view-pick-custom[hidden] {
    display: none;
}

#view-grade,
#view-pick-existing,
#view-pick-custom {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
}

#view-pick-existing .picker-view,
#view-pick-custom .picker-view {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
}

#view-pick-custom .custom-textarea {
    flex: 1;
    min-height: 120px;
}

.empty-state[hidden] {
    display: none;
}

.empty-state {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: 6px;
    background: var(--white);
    border: 1px dashed var(--line);
    border-radius: 12px;
    min-height: 300px;
}

.landing-view {
    position: fixed;
    inset: 0;
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    background: radial-gradient(circle at 50% 0%, #2a3f73 0%, #16203f 55%, #0f1526 100%);
    overflow-y: auto;
}

.landing-view[hidden] {
    display: none;
}

.landing-inner {
    max-width: 640px;
    text-align: center;
}

.landing-badge {
    width: 72px;
    height: 72px;
    margin: 0 auto 28px;
    border-radius: 20px;
    background: radial-gradient(circle at 50% 0%, #2a3f73 0%, #16203f 55%, #0f1526 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    box-shadow:
        inset 0 2px 2px rgba(255, 255, 255, 0.15),
        0 12px 30px rgba(0, 0, 0, 0.35);
}

.landing-badge img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.landing-title {
    margin: 0 0 20px;
    font-size: 34px;
    line-height: 1.4;
    font-weight: 800;
    color: #fff;
    letter-spacing: -0.02em;
}

.landing-sub {
    margin: 0 0 32px;
    font-size: 15px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.72);
}

.landing-cta {
    border: none;
    border-radius: 10px;
    padding: 15px 36px;
    font-size: 15px;
    font-weight: 700;
    color: #fff;
    background: linear-gradient(135deg, #3a56a8, #1d2d5a);
    cursor: pointer;
    box-shadow: 0 10px 24px rgba(29, 45, 90, 0.5);
}

.landing-cta:hover {
    filter: brightness(1.08);
}

.login-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 17, 21, 0.72);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
}

.login-overlay[hidden] {
    display: none;
}

.login-card {
    width: 340px;
    background: var(--white);
    border-radius: 12px;
    padding: 26px 24px 24px;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25);
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.login-card .brand-block {
    color: var(--text);
}
.login-card .brand-text {
    color: var(--text);
    font-size: 20px;
}

.login-sub {
    font-size: 12.5px;
    color: var(--muted);
    line-height: 1.6;
}

.login-error {
    font-size: 12px;
    color: #b23b3b;
    min-height: 14px;
}

.mode-tabs {
    display: flex;
    gap: 6px;
    margin: 12px 0 10px;
    background: #e7ecf5;
    border-radius: 8px;
    padding: 3px;
}

.mode-tab {
    flex: 1;
    border: none;
    background: transparent;
    border-radius: 6px;
    padding: 7px 4px;
    font-size: 12px;
    font-weight: 700;
    color: var(--muted);
    cursor: pointer;
}

.mode-tab.active {
    background: #fff;
    color: var(--brand);
    box-shadow: 0 1px 3px rgba(20, 42, 74, 0.15);
}

.mode-panel {
    display: none;
}
.mode-panel.active {
    display: block;
}

.problem-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    padding-right: 2px;
}

.problem-card {
    text-align: left;
    border: 1px solid var(--line);
    background: #fff;
    border-radius: 8px;
    padding: 10px 12px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.problem-card:hover {
    border-color: var(--brand);
}

.problem-card.selected {
    border-color: var(--brand);
    background: var(--brand-soft);
}

.problem-card .card-title {
    font-size: 12.5px;
    font-weight: 700;
    color: var(--text);
}
.problem-card .card-meta {
    font-size: 11px;
    color: var(--muted);
}

.field-label {
    display: block;
    font-size: 12px;
    font-weight: 700;
    color: var(--text);
    margin: 10px 0 6px;
}

.custom-textarea {
    width: 100%;
    min-height: 90px;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 10px 12px;
    font-size: 12.5px;
    line-height: 1.6;
    resize: vertical;
    background: #fff;
}

.rubric-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-top: 12px;
}

.rubric-row .field-label {
    margin: 0;
}

.recommend-box {
    margin-top: 4px;
    padding: 12px 14px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: var(--panel-light, #f7f9fc);
}

.recommend-box .field-label {
    margin-top: 0;
}

.recommend-input-row {
    display: flex;
    gap: 8px;
}

.recommend-input-row .select-input {
    flex: 1;
}

.recommend-error {
    margin-top: 8px;
    font-size: 12px;
    color: #a85d5d;
}

.recommend-list {
    margin-top: 10px;
    max-height: 220px;
}

.recommend-generated-note {
    font-size: 11.5px;
    color: var(--muted);
    padding: 0 2px;
}

.main-layout {
    padding: 18px;
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.control-bar {
    position: relative;
    z-index: 95;
    display: flex;
    align-items: center;
    gap: 16px;
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 10px;
    box-shadow: 0 2px 6px var(--shadow);
    padding: 12px 16px;
    margin-bottom: 18px;
}

.control-bar-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.current-problem-label {
    font-size: 13px;
    font-weight: 700;
    color: var(--text);
}

.control-bar .session-status {
    margin-top: 0;
}

.work-columns[hidden] {
    display: none;
}

.work-columns {
    display: grid;
    grid-template-columns: 1.15fr 1fr;
    grid-auto-rows: 1fr;
    gap: 18px;
    flex: 1;
    min-height: 460px;
}

.column-slot {
    min-width: 0;
    min-height: 0;
    display: flex;
    flex-direction: column;
}

.answer-view-modules {
    display: flex;
    flex: 1;
    min-height: 0;
    flex-direction: column;
    gap: 18px;
}

.answer-view-module {
    min-height: 0;
}

.answer-view-modules > .answer-view-module {
    flex: 1 1 0;
}

.answer-view-modules > .answer-view-module.collapsed {
    flex: 0 0 auto;
}

.module-toggle {
    display: flex;
    align-items: center;
    flex: 1;
    min-width: 0;
    gap: 10px;
    padding: 0;
    border: 0;
    background: transparent;
    color: inherit;
    text-align: left;
    cursor: pointer;
}

.module-toggle .problem-title,
.module-toggle .answer-title {
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.module-chevron {
    width: 9px;
    height: 9px;
    flex-shrink: 0;
    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    color: var(--muted);
    transform: rotate(-45deg);
    transition:
        transform 180ms ease,
        color 180ms ease;
}

.module-chevron.expanded {
    transform: rotate(45deg);
}

.module-toggle:hover .module-chevron,
.module-toggle:focus-visible .module-chevron {
    color: var(--brand);
}

.module-toggle:focus-visible {
    outline: 2px solid var(--brand);
    outline-offset: 4px;
    border-radius: 3px;
}

.module-body {
    overflow: hidden;
    min-height: 0;
    max-height: 0;
    opacity: 0;
    visibility: hidden;
    transition:
        max-height 220ms ease,
        opacity 160ms ease,
        visibility 0s linear 220ms;
}

.module-body.is-open {
    max-height: 100vh;
    opacity: 1;
    visibility: visible;
    transition:
        max-height 220ms ease,
        opacity 160ms ease,
        visibility 0s linear 0s;
}

#problemBody.module-body,
#answerBody.module-body {
    display: flex;
    flex: 0 0 auto;
    flex-direction: column;
}

#problemBody.module-body.is-open,
#answerBody.module-body.is-open {
    flex: 1;
}

@media (prefers-reduced-motion: reduce) {
    .module-chevron,
    .module-body {
        transition: none;
    }
}

.picker-view[hidden] {
    display: none;
}

.picker-view {
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 20px 22px 24px;
    box-shadow: 0 2px 6px var(--shadow);
}

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

.picker-list-header {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 8px;
}

.rubric-modal {
    position: fixed;
    inset: 0;
    z-index: 120;
    display: flex;
    align-items: center;
    justify-content: center;
}

.rubric-modal[hidden] {
    display: none;
}

.rubric-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(15, 17, 21, 0.55);
}

.rubric-modal-card {
    position: relative;
    width: min(640px, 92vw);
    max-height: 82vh;
    background: var(--white);
    border-radius: 12px;
    padding: 20px 22px 0;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.28);
    display: flex;
    flex-direction: column;
}

.rubric-modal-header {
    flex-shrink: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--line);
}

.rubric-modal-body {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    padding-bottom: 24px;
    color: var(--text);
}

.rubric-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.rubric-item {
    border: 1px solid var(--line);
    border-radius: 10px;
    background: var(--white);
}

.rubric-item-readonly {
    padding: 15px 17px;
    box-shadow: 0 2px 8px var(--shadow);
}

.rubric-item-title {
    font-size: 15px;
    font-weight: 700;
    line-height: 1.45;
    color: var(--text);
}

.rubric-item-number {
    margin-right: 6px;
}

.rubric-item-description {
    margin-top: 6px;
    font-size: 12.5px;
    line-height: 1.7;
    color: var(--muted);
    white-space: pre-wrap;
}

.rubric-editor {
    margin-top: 10px;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: var(--panel);
}

.rubric-item-editable {
    padding: 12px 14px;
}

.rubric-item-edit-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 10px;
}

.rubric-item-index {
    font-size: 12px;
    font-weight: 700;
    color: var(--text);
}

.rubric-remove-button {
    padding: 4px 8px;
    font-size: 11px;
}

.rubric-editor-actions {
    display: flex;
    justify-content: flex-end;
    margin-top: 10px;
}

.rubric-editor-actions .ghost-btn {
    width: 100%;
    min-width: 160px;
    padding: 9px 18px;
    background: var(--white);
    border-color: var(--navy);
    box-shadow: 0 2px 5px var(--shadow);
    font-weight: 700;
}

.rubric-item-edit-header .rubric-remove-button {
    color: #a85d5d;
    border-color: #e5caca;
    background: #fffafa;
}

.rubric-item-edit-header .rubric-remove-button:hover {
    color: #984d4d;
    border-color: #dcb8b8;
    background: #fff3f3;
}

.rubric-editor-actions .ghost-btn:hover {
    background: var(--panel-light);
}

.rubric-item-field {
    display: block;
}

.rubric-item-field + .rubric-item-field {
    margin-top: 10px;
}

.rubric-item-label {
    display: block;
    margin-bottom: 5px;
    font-size: 11px;
    font-weight: 700;
    color: var(--muted);
}

.rubric-item-input,
.rubric-item-textarea {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: 7px;
    padding: 8px 10px;
    background: var(--white);
    color: var(--text);
    font: inherit;
    font-size: 13px;
    line-height: 1.6;
}

.rubric-item-textarea {
    min-height: 72px;
    resize: vertical;
}

.rubric-empty {
    padding: 24px 0;
    text-align: center;
    font-size: 13px;
    color: var(--muted);
}

.history-list {
    white-space: normal;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.history-card {
    text-align: left;
    border: 1px solid var(--line);
    background: #fff;
    border-radius: 8px;
    padding: 12px 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.history-card:hover {
    border-color: var(--brand);
    background: var(--brand-soft);
}

.history-card-main {
    display: flex;
    flex-direction: column;
    gap: 3px;
    min-width: 0;
}
.history-card-title {
    font-size: 13px;
    font-weight: 700;
    color: var(--text);
}
.history-card-meta {
    font-size: 11px;
    color: var(--muted);
}
.history-card-result {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 3px;
    flex-shrink: 0;
}
.history-card-score {
    font-size: 15px;
    font-weight: 800;
    color: var(--brand);
    white-space: nowrap;
}
.history-card-time {
    font-size: 11px;
    color: var(--muted);
    white-space: nowrap;
}
.history-card-score.pending {
    font-size: 11.5px;
    font-weight: 700;
    color: var(--muted);
}

.round-card {
    cursor: default;
}

.problem-card.round-card {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.round-card-main {
    flex: 1;
    min-width: 0;
    border: none;
    background: transparent;
    text-align: left;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: 3px;
    padding: 0;
}

.round-delete-btn {
    flex-shrink: 0;
    color: #b42318;
    border-color: #f0b8b2;
    background: #fff5f4;
}

.round-delete-btn:hover {
    color: #912018;
    border-color: #e89a92;
    background: #ffebe9;
}

.label-title {
    font-size: 14px;
    font-weight: 700;
}
.label-sub {
    font-size: 11.5px;
    color: var(--muted);
    margin-top: 2px;
}

.select-input {
    width: 100%;
    height: 36px;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 0 10px;
    background: #fff;
    font-size: 13px;
}

.problem-meta {
    font-size: 11.5px;
    color: var(--muted);
    margin-top: 6px;
    min-height: 14px;
}

.full-width {
    width: 100%;
    margin-top: 10px;
}

.session-status {
    margin-top: 8px;
    font-size: 11.5px;
    color: var(--muted);
}

.problem-box[hidden] {
    display: none;
}

.problem-box {
    background: var(--panel);
    border: 1px solid var(--line);
    box-shadow: 0 2px 6px var(--shadow);
    border-radius: 10px;
    padding: 18px 18px 16px;
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
}

.problem-header,
.answer-header,
.answer-actions,
.criteria-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
}

.problem-header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.problem-title,
.answer-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--text);
}

.ghost-btn,
.tab,
.primary-btn,
.small-btn {
    border: 1px solid var(--line);
    border-radius: 6px;
    background: transparent;
    color: var(--navy);
    cursor: pointer;
}

.ghost-btn {
    padding: 6px 10px;
    font-size: 12px;
    background: #f3f6fa;
}

#problemBody {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
}

.problem-text {
    margin-top: 18px;
    font-size: 13px;
    line-height: 1.7;
    color: #1f2a3b;
    white-space: pre-wrap;
    flex: 1;
    min-height: 0;
    overflow-y: auto;
}

.problem-text p {
    margin: 0 0 10px;
}

.answer-box[hidden] {
    display: none;
}

.answer-box {
    border: 1px solid var(--line);
    background: var(--panel);
    box-shadow: 0 2px 6px var(--shadow);
    border-radius: 10px;
    padding: 12px 16px 14px;
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
}

.word-counter {
    font-size: 12px;
    color: var(--muted);
    font-weight: 700;
}

.answer-name-input {
    flex: 1;
    margin: 0 12px;
    min-width: 0;
    border: 1px solid transparent;
    border-radius: 6px;
    padding: 4px 8px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text);
    background: transparent;
}

.answer-name-input:hover,
.answer-name-input:focus {
    border-color: var(--line);
    background: var(--white);
    outline: none;
}

.answer-preview-banner[hidden] {
    display: none;
}

.answer-preview-banner {
    flex-shrink: 0;
    margin-top: 10px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    background: var(--warning);
    border: 1px solid #e3c98f;
    border-radius: 8px;
    padding: 8px 10px;
    font-size: 11.5px;
    font-weight: 700;
    color: #6b4c14;
}

.answer-input[readonly] {
    background: #f3f3f0;
    cursor: default;
}

.annotated-answer-wrap {
    display: flex;
    flex: 1;
    min-height: 0;
    flex-direction: column;
}

.annotated-answer {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    padding: 14px;
    white-space: pre-wrap;
    word-wrap: break-word;
    font-size: 13px;
    line-height: 1.7;
    color: var(--text);
}

.answer-correction-mark {
    appearance: none;
    border: 0;
    border-radius: 3px;
    padding: 0 1px;
    color: inherit;
    font: inherit;
    line-height: inherit;
    cursor: pointer;
    background: rgba(254, 226, 226, 0.7);
    text-decoration: underline wavy #ef4444 1.5px;
    text-underline-offset: 3px;
}

.answer-correction-mark:hover,
.answer-correction-mark.active {
    background: #fee2e2;
    color: #991b1b;
}

.answer-correction-callout {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 10px;
    margin: 10px 12px 0;
    padding: 10px 12px;
    border: 1px solid #fecaca;
    border-radius: 8px;
    background: #fff7f7;
    color: #7f1d1d;
    font-size: 12px;
    line-height: 1.55;
}

.answer-correction-callout del {
    margin-left: 8px;
    color: #b91c1c;
}

.answer-correction-callout strong {
    color: #15803d;
}

.answer-correction-callout p {
    margin: 5px 0 0;
    color: var(--muted);
}

.answer-correction-label {
    color: #dc2626;
    font-weight: 700;
}

.answer-correction-arrow {
    margin: 0 6px;
    color: var(--muted);
}

.answer-correction-callout button {
    border: 0;
    padding: 0;
    background: transparent;
    color: #64748b;
    font-size: 18px;
    line-height: 1;
    cursor: pointer;
}

.annotated-answer-hint {
    margin: 0;
    padding: 7px 13px 10px;
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: 11px;
}

.highlight-wrap {
    position: relative;
    display: flex;
    flex-direction: column;
    margin-top: 12px;
    flex: 1;
    min-height: 0;
    border: 1px solid var(--line);
    border-radius: 8px;
    overflow: hidden;
    background: #f7f9fb;
}

.answer-highlight,
.answer-input {
    position: absolute;
    inset: 0;
    margin: 0;
    padding: 14px;
    font-size: 13px;
    line-height: 1.7;
    font-family: inherit;
    white-space: pre-wrap;
    word-wrap: break-word;
    overflow: auto;
    border: none;
}

.answer-highlight {
    color: transparent;
    pointer-events: none;
    z-index: 1;
}

.answer-highlight mark {
    background: var(--highlight);
    border-radius: 2px;
    color: transparent;
}

.answer-input {
    width: 100%;
    height: 100%;
    resize: none;
    background: transparent;
    color: var(--text);
    z-index: 2;
}

.answer-actions {
    justify-content: flex-end;
    margin-top: 12px;
    gap: 8px;
}

.save-status {
    flex: 1;
    text-align: left;
    font-size: 12px;
    color: #1f7a4d;
    font-weight: 700;
}

.primary-btn {
    background: var(--navy);
    color: white;
    border: none;
    height: 34px;
    padding: 0 18px;
    font-weight: 700;
    border-radius: 8px;
    cursor: pointer;
}

.primary-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.small-btn {
    height: 38px;
    padding: 0 16px;
    background: var(--navy);
    color: white;
    border: none;
}

.right-panel {
    display: flex;
    flex: 1;
    min-height: 0;
    flex-direction: column;
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 10px;
    box-shadow: 0 2px 6px var(--shadow);
    padding: 14px 16px 16px;
    position: sticky;
    top: 18px;
}

.tabs {
    display: flex;
    gap: 8px;
    border-bottom: 1px solid var(--line);
    padding-bottom: 12px;
    margin-bottom: 14px;
}

.page-tabs-bar {
    max-width: 360px;
}

.tab {
    flex: 1;
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    padding: 8px 4px 10px;
    font-size: 12px;
    color: var(--muted);
    font-weight: 700;
    cursor: pointer;
}

.tab.active {
    color: var(--brand);
    border-color: var(--brand);
}

.tab-panels {
    flex: 1;
    min-height: 0;
    overflow: hidden;
}

.tab-panel {
    display: none;
    min-height: 0;
}
.tab-panel.active {
    display: block;
    height: 100%;
    overflow: hidden;
}

.panel-empty {
    font-size: 12.5px;
    color: var(--muted);
    line-height: 1.7;
    padding: 30px 6px;
    text-align: center;
}

.panel-loading[hidden] {
    display: none;
}

.panel-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 50px 6px;
    text-align: center;
}

.grade-loading-spinner {
    width: 32px;
    height: 32px;
    border: 3px solid #dfe7f1;
    border-top-color: var(--brand);
    border-radius: 50%;
    animation: grade-spin 0.8s linear infinite;
}

@keyframes grade-spin {
    to {
        transform: rotate(360deg);
    }
}

.grade-loading-text {
    font-size: 13.5px;
    font-weight: 700;
    color: var(--text);
}

.grade-loading-sub {
    font-size: 11.5px;
    color: var(--muted);
}

.score-card {
    display: flex;
    flex: 1;
    height: 100%;
    min-height: 0;
    flex-direction: column;
    padding-top: 4px;
}

.score-ring-wrap {
    display: flex;
    align-items: center;
    gap: 18px;
    margin-bottom: 18px;
}

.score-ring {
    --score: 0;
    width: 92px;
    height: 92px;
    border-radius: 50%;
    background: conic-gradient(var(--brand) calc(var(--score) * 1%), #dfe7f1 0);
    display: grid;
    place-items: center;
    flex-shrink: 0;
}

.score-inner {
    width: 72px;
    height: 72px;
    background: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    color: var(--brand);
}

.score-number {
    font-size: 18px;
    font-weight: 700;
}
.score-divider {
    font-size: 11px;
    color: var(--muted);
}
.score-text {
    flex: 1;
}
.score-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}
.score-title {
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 6px;
}
.ranking-badge,
.ranking-status {
    flex-shrink: 0;
    margin-bottom: 6px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 700;
    line-height: 1;
    padding: 6px 8px;
}
.ranking-badge {
    background: #eef2ff;
    color: var(--brand);
}
.ranking-status {
    color: var(--muted);
    background: #f1f5f9;
}
.score-sub {
    font-size: 12px;
    color: var(--muted);
    line-height: 1.5;
}
.score-created-at {
    margin-top: 5px;
    font-size: 11px;
    color: var(--muted);
}

.criteria-list {
    display: flex;
    flex: 1;
    min-height: 0;
    flex-direction: column;
    gap: 10px;
    overflow-y: auto;
    padding-right: 2px;
}

.criteria-item {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: #f9fbfd;
}
.criteria-row {
    font-size: 12px;
    color: var(--text);
    gap: 8px;
    align-items: flex-start;
}

.criteria-label {
    min-width: 0;
}

.criteria-score {
    flex-shrink: 0;
    white-space: nowrap;
    font-weight: 700;
}

.bar {
    width: 100%;
    height: 8px;
    border-radius: 100px;
    background: #dfe7f1;
    overflow: hidden;
}

.bar span {
    display: block;
    background: var(--brand);
    height: 100%;
    border-radius: inherit;
}

.criteria-feedback {
    display: grid;
    gap: 5px;
    padding-top: 2px;
    font-size: 12px;
    line-height: 1.55;
    color: var(--muted);
}

.criteria-feedback p,
.overall-comment {
    margin: 0;
}

.criteria-feedback strong {
    display: inline-block;
    min-width: 58px;
    margin-right: 5px;
    color: var(--text);
    font-weight: 700;
}

.checklist-box {
    flex: 0 0 auto;
    max-height: 40%;
    margin-top: 18px;
    overflow-y: auto;
    background: #edf1f7;
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 12px 14px;
}

.checklist-title {
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 10px;
}

.checklist-box ul {
    margin: 0;
    padding-left: 18px;
    color: var(--text);
    font-size: 12px;
    line-height: 1.7;
}

.overall-comment {
    font-size: 12px;
    line-height: 1.65;
    color: var(--text);
}

.proof-count {
    font-size: 11.5px;
    color: var(--muted);
    margin-bottom: 10px;
}

.proof-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-height: 480px;
    overflow-y: auto;
}

.proof-box {
    background: #f5f7fb;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 12px 12px 10px;
}

.proof-box-selectable {
    width: 100%;
    text-align: left;
    font: inherit;
    cursor: pointer;
}

.proof-box-selectable.active {
    border-color: #f87171;
    box-shadow: 0 0 0 3px rgba(248, 113, 113, 0.15);
}

.proof-tag {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 6px;
    background: var(--success);
    color: #2c6b5d;
    font-size: 11px;
    font-weight: 700;
    margin-bottom: 8px;
}

.proof-tag.warning {
    background: var(--warning);
    color: #8a5d1f;
}
.proof-tag.neutral {
    background: #e9edf8;
    color: #4b5d7a;
}

.proof-text {
    font-size: 13px;
    font-weight: 700;
    line-height: 1.6;
    color: var(--text);
}
.proof-text del {
    color: #b33;
    text-decoration: line-through;
    font-weight: 500;
}

.proof-meta {
    margin-top: 6px;
    font-size: 11px;
    line-height: 1.5;
    color: var(--muted);
}

.proof-examples {
    margin-top: 8px;
    font-size: 11px;
    line-height: 1.5;
    color: var(--muted);
}
.proof-examples ul {
    margin: 4px 0 0;
    padding-left: 18px;
}

.compare-table-wrap {
    overflow-x: auto;
}

.compare-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 11.5px;
}

.compare-table th,
.compare-table td {
    border-bottom: 1px solid var(--line);
    padding: 6px 8px;
    text-align: center;
    white-space: nowrap;
}

.compare-table th:first-child,
.compare-table td:first-child {
    text-align: left;
    font-weight: 700;
    white-space: normal;
}

.compare-table thead th {
    color: var(--muted);
    font-weight: 700;
}

.compare-th-name {
    display: block;
    font-weight: 700;
}

.compare-th-date {
    display: block;
    margin-top: 2px;
    font-size: 10px;
    font-weight: 400;
    color: var(--muted);
}

.compare-attempt-btn {
    display: block;
    width: 100%;
    border: none;
    background: transparent;
    padding: 0;
    font: inherit;
    color: var(--brand);
    font-weight: 700;
    cursor: pointer;
    text-decoration: underline;
    text-underline-offset: 2px;
}

.compare-attempt-btn:hover {
    color: var(--navy);
}

.compare-table tr.compare-total td {
    font-weight: 700;
    color: var(--brand);
    background: #e2e9f6;
}

.compare-table td.diff-up {
    color: #1f7a4d;
}
.compare-table td.diff-down {
    color: #b23b3b;
}

.chat-messages {
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-height: 440px;
    overflow-y: auto;
    padding-right: 2px;
    margin-bottom: 12px;
}

.chat-box {
    display: flex;
    gap: 10px;
    align-items: flex-start;
}

.chat-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 42px;
    height: 24px;
    border-radius: 6px;
    background: #edf1f8;
    color: var(--navy);
    font-size: 11px;
    font-weight: 700;
    flex-shrink: 0;
}

.chat-badge.assistant {
    background: #edf2fe;
    color: #2c5ec6;
}

.chat-msg {
    background: #f4f6fb;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 10px 12px;
    flex: 1;
    font-size: 12px;
    line-height: 1.7;
    color: var(--text);
    white-space: pre-wrap;
}

.chat-typing-msg {
    color: var(--muted);
    font-style: italic;
}

.typing-dots span {
    display: inline-block;
    animation: chat-typing-bounce 1.2s infinite;
    animation-fill-mode: both;
}

.typing-dots span:nth-child(2) {
    animation-delay: 0.2s;
}
.typing-dots span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes chat-typing-bounce {
    0%,
    60%,
    100% {
        opacity: 0.3;
        transform: translateY(0);
    }
    30% {
        opacity: 1;
        transform: translateY(-2px);
    }
}

.chat-input-wrap {
    display: flex;
    gap: 8px;
}

.chat-input-wrap input {
    flex: 1;
    height: 38px;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 0 12px;
}

.weekly-report-page {
    width: min(940px, 100%);
    margin: 0 auto;
    padding: 26px 4px;
}

.weekly-report-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 20px;
    margin: 18px 0 22px;
}

.weekly-report-header h1 {
    margin: 0 0 7px;
    color: var(--navy);
    font-size: 26px;
}

.weekly-report-header p:not(.page-eyebrow) {
    margin: 0;
    color: var(--muted);
    font-size: 13px;
}

.weekly-report-error {
    margin: 0 0 16px;
    padding: 12px 14px;
    border: 1px solid #fecaca;
    border-radius: 9px;
    background: #fff5f5;
    color: #b42318;
    font-size: 13px;
}

.weekly-report-empty {
    display: flex;
    align-items: center;
    flex-direction: column;
    gap: 9px;
    padding: 54px 20px;
    text-align: center;
}

.weekly-report-empty p {
    margin: 0;
    color: var(--text);
    font-weight: 700;
}

.weekly-report-empty span {
    margin-bottom: 8px;
    color: var(--muted);
    font-size: 13px;
}

.page-eyebrow {
    margin: 0 0 7px;
    color: var(--brand);
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.08em;
}

.weekly-email-form {
    flex-shrink: 0;
}

.weekly-email-form label {
    display: block;
    margin-bottom: 6px;
    color: var(--muted);
    font-size: 11px;
    font-weight: 700;
}

.weekly-email-form > div {
    display: flex;
    gap: 6px;
}

.weekly-email-form input {
    width: 180px;
    border: 1px solid var(--line);
    border-radius: 6px;
    padding: 8px 9px;
    color: var(--text);
    font-size: 12px;
}

.weekly-email-form .primary-btn {
    padding: 8px 10px;
    white-space: nowrap;
}

.weekly-email-form > p {
    max-width: 300px;
    margin: 7px 0 0;
    color: var(--muted);
    font-size: 11px;
    line-height: 1.45;
}

.weekly-email-settings {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 18px;
    margin: 0 0 16px;
    padding: 16px 18px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: var(--panel);
}

.weekly-email-settings strong {
    color: var(--navy);
    font-size: 13px;
}

.weekly-email-settings p {
    margin: 5px 0 0;
    color: var(--muted);
    font-size: 12px;
    line-height: 1.45;
}

.weekly-email-settings-controls {
    display: flex;
    flex-shrink: 0;
    gap: 6px;
}

.weekly-email-settings input {
    width: 220px;
    border: 1px solid var(--line);
    border-radius: 6px;
    padding: 8px 9px;
    color: var(--text);
    font-size: 12px;
}

.weekly-email-settings .primary-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 34px;
    padding: 0 10px;
    line-height: 1;
    white-space: nowrap;
}

.weekly-email-settings-status {
    flex-basis: 100%;
}

.weekly-problem-cta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 16px;
    padding: 16px 18px;
    border: 1px solid #c7d2fe;
    border-radius: 12px;
    background: #f5f7ff;
}

.weekly-problem-cta strong {
    color: var(--brand);
}
.weekly-problem-cta p {
    margin: 5px 0 0;
    color: var(--muted);
    font-size: 12px;
}

.personalized-problem-section {
    margin: 18px 0;
}
.personalized-problem-heading {
    margin-bottom: 8px;
    color: var(--brand);
    font-size: 12px;
    font-weight: 800;
}
.personalized-problem-card {
    border-color: #c7d2fe;
    background: #f7f8ff;
}

.weekly-report-list,
.skill-score-grid {
    display: grid;
    gap: 14px;
}

.weekly-report-list {
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
}

.skill-score-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.weekly-report-card,
.skill-score-card,
.weekly-summary-card {
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 18px;
    background: var(--panel);
}

.weekly-report-card {
    color: var(--text);
    text-align: left;
    cursor: pointer;
    transition:
        transform 0.16s ease,
        box-shadow 0.16s ease;
}

.weekly-report-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 18px var(--shadow);
}

.weekly-report-card-top,
.skill-score-card-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.weekly-report-card-top {
    color: var(--muted);
    font-size: 12px;
}

.weekly-report-score-preview {
    display: flex;
    gap: 6px;
    margin: 16px 0 12px;
}

.weekly-report-score-preview span {
    display: grid;
    width: 28px;
    height: 28px;
    place-items: center;
    border-radius: 50%;
    background: #eef2ff;
    color: var(--brand);
    font-size: 12px;
    font-weight: 800;
}

.weekly-report-card p {
    display: -webkit-box;
    margin: 0 0 14px;
    overflow: hidden;
    color: #475569;
    font-size: 13px;
    line-height: 1.6;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    line-clamp: 2;
}

.weekly-report-card strong {
    color: var(--brand);
    font-size: 12px;
}

.skill-score-card-head > span {
    font-weight: 700;
}

.skill-score-card-head strong {
    color: var(--brand);
    font-size: 22px;
}

.skill-score-card-head small {
    margin-left: 2px;
    color: var(--muted);
    font-size: 12px;
}

.skill-score-card > p {
    min-height: 42px;
    margin: 14px 0;
    color: #475569;
    font-size: 13px;
    line-height: 1.6;
}

.skill-score-card > div:last-child {
    padding-top: 12px;
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: 12px;
    line-height: 1.55;
}

.skill-score-card b {
    display: block;
    margin-bottom: 4px;
    color: var(--brand);
}

.weekly-summary-card {
    margin-top: 16px;
}

.weekly-summary-card h2 {
    margin: 18px 0 7px;
    color: var(--navy);
    font-size: 15px;
}

.weekly-summary-card h2:first-child {
    margin-top: 0;
}

.weekly-summary-card p,
.weekly-summary-card li {
    color: #475569;
    font-size: 13px;
    line-height: 1.7;
}

.weekly-summary-card p {
    margin: 0;
}

@media (max-width: 980px) {
    .work-columns {
        grid-template-columns: 1fr;
    }
    .right-panel {
        position: static;
    }
    .control-bar {
        flex-wrap: wrap;
    }
    .weekly-report-header {
        align-items: flex-start;
        flex-direction: column;
    }
    .weekly-email-settings {
        align-items: flex-start;
        flex-direction: column;
    }
    .weekly-email-settings-controls {
        width: 100%;
    }
    .weekly-email-settings input {
        flex: 1;
        min-width: 0;
        width: auto;
    }
    .weekly-problem-cta {
        align-items: flex-start;
        flex-direction: column;
    }
}