:root {
    --bg: #f4f6f8;
    --surface: #ffffff;
    --surface-muted: #f8fafc;
    --border: #d9e0e8;
    --text: #17202a;
    --muted: #667085;
    --primary: #1f4e79;
    --primary-dark: #173b5c;
    --success: #227a4e;
    --warning: #9a6700;
    --danger: #b42318;
    --info: #175cd3;
    --sidebar: #102337;
    --sidebar-hover: #193550;
    --shadow: 0 1px 2px rgba(16, 24, 40, 0.08);
}

.otp-input {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.35em;
    text-align: center;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans TC", "Microsoft JhengHei", Arial, sans-serif;
    font-size: 15px;
    line-height: 1.5;
}

a {
    color: inherit;
    text-decoration: none;
}

.app-shell {
    display: flex;
    min-height: 100vh;
}

.app-sidebar {
    width: 248px;
    flex: 0 0 248px;
    background: var(--sidebar);
    color: #e8eef5;
    padding: 20px 14px;
}

.brand-block {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0 8px 22px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    margin-bottom: 18px;
}

.brand-mark {
    display: grid;
    place-items: center;
    width: 42px;
    height: 42px;
    border-radius: 8px;
    background: #ffffff;
    color: var(--primary-dark);
    font-weight: 700;
}

.brand-title {
    font-weight: 700;
    letter-spacing: 0;
}

.brand-subtitle {
    color: #a9b8c7;
    font-size: 13px;
}

.sidebar-nav {
    display: grid;
    gap: 8px;
}

.sidebar-group {
    display: grid;
    gap: 4px;
}

.sidebar-group-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 34px;
    padding: 7px 10px;
    border-radius: 6px;
    color: #a9b8c7;
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
    list-style: none;
}

.sidebar-group-title::-webkit-details-marker {
    display: none;
}

.sidebar-group-title::after {
    content: ">";
    font-size: 12px;
    color: #88a4bd;
    transition: transform 0.16s ease;
    transform: rotate(90deg);
}

.sidebar-group:not([open]) .sidebar-group-title::after {
    transform: rotate(0deg);
}

.sidebar-group[open] .sidebar-group-title {
    background: rgba(255, 255, 255, 0.06);
    color: #ffffff;
}

.sidebar-group-items {
    display: grid;
    gap: 4px;
}

.sidebar-link {
    display: flex;
    align-items: center;
    min-height: 40px;
    padding: 9px 12px 9px 18px;
    border-radius: 6px;
    color: #d7e0ea;
    font-weight: 500;
}

.sidebar-link:hover,
.sidebar-link.is-active {
    background: var(--sidebar-hover);
    color: #ffffff;
}

.sidebar-link.is-active {
    box-shadow: inset 3px 0 0 #7fb3d5;
}

.app-main {
    flex: 1;
    min-width: 0;
    padding: 24px 28px 40px;
}

.topbar {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: flex-start;
    margin-bottom: 22px;
}

.topbar h1,
.student-header h1 {
    margin: 4px 0 0;
    font-size: 26px;
    line-height: 1.25;
    letter-spacing: 0;
}

.topbar-school {
    color: var(--muted);
    font-size: 14px;
}

.topbar-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.link-button,
.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 36px;
    padding: 8px 14px;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--primary);
    font-weight: 600;
}

.button-primary {
    border-color: var(--primary);
    background: var(--primary);
    color: #ffffff;
}

.text-link {
    color: var(--primary);
    font-weight: 700;
    text-decoration: underline;
    text-underline-offset: 3px;
}

.text-link:hover {
    color: var(--primary-dark);
}

.content-grid {
    display: grid;
    gap: 16px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
}

.stats-grid-three {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.panel,
.stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.panel {
    padding: 18px;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    align-items: center;
    margin-bottom: 14px;
}

.panel-title {
    margin: 0;
    font-size: 18px;
}

.panel-note {
    margin: 4px 0 0;
    color: var(--muted);
}

.stat-card {
    padding: 16px;
}

.stat-label {
    color: var(--muted);
    font-size: 14px;
}

.stat-value {
    margin-top: 6px;
    font-size: 28px;
    font-weight: 700;
}

.stat-value.stat-text {
    font-size: 20px;
    line-height: 1.35;
    overflow-wrap: anywhere;
}

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

.table-scroll {
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.table-scroll .data-table {
    min-width: 880px;
}

.data-table th,
.data-table td {
    padding: 11px 12px;
    border-bottom: 1px solid var(--border);
    text-align: left;
    vertical-align: middle;
}

.data-table th {
    background: var(--surface-muted);
    color: #344054;
    font-size: 13px;
    font-weight: 700;
}

.data-table tr:last-child td {
    border-bottom: 0;
}

.language-demand-matrix th,
.language-demand-matrix td {
    text-align: center;
    white-space: nowrap;
}

.language-demand-matrix th:first-child {
    position: sticky;
    left: 0;
    z-index: 2;
    min-width: 72px;
    background: var(--surface-muted);
}

.language-demand-matrix thead th:first-child {
    z-index: 3;
}

.language-demand-matrix td:last-child,
.language-demand-matrix th:last-child,
.language-demand-matrix tfoot th,
.language-demand-matrix tfoot td {
    background: #f8fafc;
}

.language-demand-matrix tfoot th,
.language-demand-matrix tfoot td {
    border-top: 2px solid var(--border);
}

.class-mapping-row {
    scroll-margin-top: 96px;
}

.class-mapping-row:target td {
    background: #fff7d6;
}

.language-class-map-form {
    display: grid;
    gap: 18px;
}

.language-map-step {
    display: grid;
    grid-template-columns: 34px minmax(0, 1fr);
    align-items: start;
    gap: 12px;
}

.language-map-step-number {
    display: inline-grid;
    width: 30px;
    height: 30px;
    place-items: center;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    font-weight: 800;
}

.language-class-picker {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 9px;
    margin-top: 8px;
}

.language-class-choice {
    display: flex;
    align-items: center;
    gap: 9px;
    min-height: 58px;
    padding: 9px 11px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--surface);
    cursor: pointer;
}

.language-class-choice:has(input:checked) {
    border-color: var(--primary);
    background: #eef4ff;
    box-shadow: 0 0 0 1px var(--primary);
}

.language-class-choice span {
    display: grid;
    gap: 2px;
}

.language-class-choice small {
    color: var(--muted);
}

.language-custom-class {
    max-width: 420px;
    margin-top: 12px;
}

.language-map-summary {
    margin: 20px 0;
    padding: 16px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--surface-muted);
}

.language-map-summary h3 {
    margin: 0 0 10px;
    font-size: 15px;
}

.language-map-summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 10px;
}

.language-map-summary-card {
    display: grid;
    gap: 5px;
    padding: 11px 12px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--surface);
}

.language-map-summary-card span {
    color: var(--muted);
}

.flow-reference-panel {
    scroll-margin-top: 96px;
}

.flow-reference-table th:first-child {
    width: 180px;
}

.flow-reference-table th:nth-child(2) {
    width: 120px;
}

.flow-reference-offerings {
    display: grid;
    gap: 8px;
}

.flow-reference-offering {
    display: grid;
    grid-template-columns: minmax(84px, auto) 18px minmax(110px, auto) minmax(88px, 1fr);
    align-items: center;
    gap: 8px;
}

.flow-reference-course-type {
    font-weight: 700;
}

.flow-reference-arrow {
    color: var(--muted);
    text-align: center;
}

.flow-reference-offering .status-badge {
    justify-self: start;
}

.flow-rule-reference {
    padding: 16px 18px 18px;
    border-top: 1px solid var(--border);
}

.flow-rule-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 10px;
    margin-top: 12px;
}

.flow-rule-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 11px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface-muted);
    line-height: 1.55;
}

.flow-rule-item .status-badge {
    flex: 0 0 auto;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    min-height: 24px;
    padding: 3px 9px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 700;
}

.status-neutral {
    color: #475467;
    background: #eef2f6;
}

.status-info {
    color: var(--info);
    background: #e8f1ff;
}

.status-success {
    color: var(--success);
    background: #e7f6ee;
}

.status-warning {
    color: var(--warning);
    background: #fff4d6;
}

.status-danger {
    color: var(--danger);
    background: #fdecec;
}

.toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
    padding: 12px;
    background: var(--surface-muted);
    border: 1px solid var(--border);
    border-radius: 8px;
}

.page-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    padding: 6px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface-muted);
}

.page-tab {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 38px;
    padding: 8px 14px;
    border-radius: 6px;
    color: var(--muted);
    font-weight: 700;
    text-decoration: none;
    white-space: nowrap;
}

.page-tab:hover {
    color: var(--primary);
}

.page-tab.is-active {
    background: #ffffff;
    color: var(--primary);
    box-shadow: var(--shadow);
}

.alert {
    padding: 12px 14px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--surface);
    font-weight: 600;
}

.alert-info {
    color: var(--info);
    background: #e8f1ff;
    border-color: #bfd7ff;
}

.alert-success {
    color: var(--success);
    background: #e7f6ee;
    border-color: #bde7ce;
}

.alert-warning {
    color: var(--warning);
    background: #fff4d6;
    border-color: #f5d98b;
}

.alert-danger {
    color: var(--danger);
    background: #fdecec;
    border-color: #fac5c1;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
}

.advanced-settings {
    grid-column: 1 / -1;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface-muted);
    padding: 0;
}

.advanced-settings summary {
    min-height: 40px;
    padding: 10px 12px;
    color: #344054;
    font-weight: 700;
    cursor: pointer;
}

.advanced-settings[open] summary {
    border-bottom: 1px solid var(--border);
}

.advanced-note {
    margin: 12px 12px 0;
    color: var(--muted);
    font-size: 14px;
}

.advanced-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
    padding: 12px;
}

.course-form-panel {
    padding: 0;
    overflow: hidden;
}

.course-form-summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 18px;
    cursor: pointer;
    list-style: none;
}

.course-form-summary::-webkit-details-marker {
    display: none;
}

.course-form-panel[open] .course-form-summary {
    border-bottom: 1px solid var(--border);
}

.course-form-summary:hover .course-form-state {
    border-color: var(--primary);
    color: var(--primary);
}

.course-form-state {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 34px;
    min-width: 64px;
    padding: 6px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--muted);
    font-weight: 700;
    background: #ffffff;
}

.add-drop-course-panel {
    padding: 0;
    overflow: hidden;
}

.add-drop-course-summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 18px;
    cursor: pointer;
    list-style: none;
}

.add-drop-course-summary::-webkit-details-marker {
    display: none;
}

.add-drop-course-summary-main {
    min-width: 0;
}

.add-drop-course-summary-meta {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
    flex-wrap: wrap;
}

.add-drop-course-toggle {
    color: var(--primary);
    font-size: 13px;
    font-weight: 800;
    white-space: nowrap;
}

.add-drop-course-toggle::before {
    content: "展開課程清單";
}

.add-drop-course-panel[open] .add-drop-course-toggle::before {
    content: "收合課程清單";
}

.add-drop-course-panel[open] .add-drop-course-summary {
    border-bottom: 1px solid var(--border);
}

.add-drop-course-body {
    padding: 0 18px 18px;
}

.add-drop-course-note {
    margin: 14px 0;
}

.result-accordion {
    display: grid;
    gap: 10px;
}

.result-plan {
    border: 1px solid var(--border);
    border-radius: 8px;
    background: #ffffff;
    overflow: hidden;
}

.result-plan-summary {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    align-items: center;
    padding: 14px;
    cursor: pointer;
    list-style: none;
}

.result-plan-summary::-webkit-details-marker {
    display: none;
}

.result-plan[open] .result-plan-summary {
    border-bottom: 1px solid var(--border);
}

.result-plan-main,
.result-plan-outcome {
    min-width: 0;
}

.result-plan-title {
    font-weight: 800;
}

.result-plan-outcome {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
    flex-wrap: wrap;
    text-align: right;
}

.result-plan-toggle {
    color: var(--muted);
    font-size: 13px;
    font-weight: 700;
}

.result-plan[open] .result-plan-toggle {
    font-size: 0;
}

.result-plan[open] .result-plan-toggle::after {
    content: "收合";
    font-size: 13px;
}

.result-plan-body {
    display: grid;
    gap: 10px;
    padding: 12px;
    background: var(--surface-muted);
}

.result-history-shell {
    border: 0;
}

.result-history-shell > .result-plan-summary {
    padding: 0;
}

.result-history-shell[open] > .result-plan-summary {
    padding-bottom: 12px;
}

.result-history-shell > .result-plan-body {
    border: 1px solid var(--border);
    border-radius: 8px;
}

.result-history-block {
    display: grid;
    gap: 10px;
}

.subsection-title {
    margin: 0;
    color: #344054;
    font-size: 15px;
    font-weight: 800;
}

.result-detail-card {
    display: grid;
    gap: 8px;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: #ffffff;
}

.result-detail-row {
    display: grid;
    grid-template-columns: 108px minmax(0, 1fr);
    gap: 10px;
    align-items: start;
}

.result-detail-row > span {
    color: #344054;
    font-size: 13px;
    font-weight: 800;
}

.course-form-panel[open] .state-closed,
.course-form-panel:not([open]) .state-open {
    display: none;
}

.course-form-panel > form,
.course-edit-context {
    margin: 18px;
}

.course-edit-context {
    justify-content: space-between;
    margin-bottom: 0;
}

.field-wide {
    grid-column: 1 / -1;
}

.form-section-title {
    margin-top: 4px;
    padding: 8px 0 2px;
    border-bottom: 1px solid var(--border);
    color: #344054;
    font-size: 14px;
    font-weight: 700;
}

.checkbox-line {
    display: flex;
    align-items: center;
    gap: 8px;
}

.check-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 10px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: #ffffff;
}

.check-option {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    min-height: 30px;
    padding: 4px 9px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--surface-muted);
    font-weight: 700;
}

.compact-check-grid {
    padding: 6px;
    gap: 6px;
    min-width: 220px;
}

.compact-check-grid .check-option {
    min-height: 26px;
    padding: 3px 7px;
    font-size: 13px;
}

.capacity-formula {
    display: grid;
    gap: 8px;
    padding: 10px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--surface-muted);
}

.formula-row {
    display: flex;
    gap: 8px;
    align-items: center;
    min-width: 0;
}

.field.formula-field {
    display: flex;
    gap: 8px;
    align-items: center;
    flex: 1 1 0;
    min-width: 0;
}

.field.formula-field label {
    flex: 0 0 auto;
    white-space: nowrap;
    font-size: 13px;
}

.field.formula-field .input {
    width: 100%;
    min-width: 64px;
    min-height: 34px;
    padding: 6px 8px;
}

.formula-symbol {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 18px;
    min-height: 34px;
    color: #344054;
    font-size: 17px;
    font-weight: 700;
}

.formula-output {
    background: #eef2f6;
    color: #344054;
    font-weight: 700;
}

.formula-summary {
    padding: 6px 8px;
    border-radius: 6px;
    background: #ffffff;
    color: var(--muted);
    font-size: 13px;
}

.formula-summary.is-warning {
    color: var(--warning);
    background: #fff4d6;
}

.formula-summary.is-danger {
    color: var(--danger);
    background: #fdecec;
}

.form-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
    margin-top: 16px;
}

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

.button-danger {
    border-color: #fac5c1;
    background: #ffffff;
    color: var(--danger);
}

.button-small {
    min-height: 30px;
    padding: 5px 10px;
    font-size: 13px;
}

.muted {
    color: var(--muted);
}

.font-monospace {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}

.stack {
    display: grid;
    gap: 16px;
}

.field {
    display: grid;
    gap: 6px;
}

.field label {
    color: #344054;
    font-weight: 700;
    font-size: 14px;
}

.input,
.select,
.textarea {
    min-height: 38px;
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 8px 10px;
    background: #ffffff;
    color: var(--text);
}

.student-shell {
    max-width: 1120px;
    margin: 0 auto;
    padding: 22px 18px 40px;
}

.student-header {
    display: grid;
    gap: 18px;
    margin-bottom: 18px;
}

.student-profile {
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
    overflow: hidden;
}

.student-profile-summary {
    display: flex;
    align-items: center;
    gap: 10px;
    min-height: 48px;
    padding: 12px 14px;
    cursor: pointer;
    list-style: none;
}

.student-profile-summary::-webkit-details-marker {
    display: none;
}

.student-profile-summary strong {
    flex: 1;
    min-width: 0;
    overflow-wrap: anywhere;
}

.student-profile-toggle {
    color: var(--muted);
    font-size: 13px;
    font-weight: 800;
}

.student-profile[open] .student-profile-toggle {
    font-size: 0;
}

.student-profile[open] .student-profile-toggle::after {
    content: "收合";
    font-size: 13px;
}

.student-profile-body {
    display: grid;
    gap: 12px;
    padding: 14px;
    border-top: 1px solid var(--border);
    background: var(--surface-muted);
}

.student-profile-body > div {
    display: grid;
    gap: 3px;
}

.student-profile-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.student-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 8px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
}

.student-nav-link {
    min-height: 34px;
    padding: 7px 12px;
    border-radius: 6px;
    color: var(--muted);
    font-weight: 700;
}

.student-nav-link:hover,
.student-nav-link.is-active {
    background: #e8f1ff;
    color: var(--primary);
}

.student-main {
    display: grid;
    gap: 16px;
}

.login-body {
    min-height: 100vh;
    background: var(--bg);
}

.login-shell {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
}

.login-card {
    width: min(100%, 440px);
    display: grid;
    gap: 16px;
    padding: 22px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
    box-shadow: var(--shadow);
}

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

.login-brand h1 {
    margin: 2px 0 0;
    font-size: 22px;
    line-height: 1.25;
}

.login-tabs {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
    padding: 6px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface-muted);
}

.login-tab {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 38px;
    border-radius: 6px;
    color: var(--muted);
    font-weight: 700;
}

.login-tab.is-active {
    background: #ffffff;
    color: var(--primary);
    box-shadow: var(--shadow);
}

.login-form {
    display: grid;
    gap: 14px;
}

.turnstile-field {
    display: flex;
    justify-content: center;
    min-width: 0;
}

.turnstile-field .cf-turnstile {
    max-width: 100%;
}

.site-footer {
    margin-top: 32px;
    padding: 16px 12px 0;
    border-top: 1px solid var(--border);
    color: var(--muted);
    font-size: 12px;
    line-height: 1.7;
    text-align: center;
}

.login-card .site-footer {
    margin-top: 2px;
    padding: 14px 0 0;
}

.notice-modal {
    position: fixed;
    inset: 0;
    z-index: 50;
    display: grid;
    place-items: center;
    padding: 20px;
    background: rgba(16, 24, 40, 0.46);
}

.notice-modal.is-hidden {
    display: none;
}

.notice-dialog {
    width: min(100%, 460px);
    display: grid;
    gap: 12px;
    padding: 20px;
    border-radius: 8px;
    background: #ffffff;
    box-shadow: 0 12px 30px rgba(16, 24, 40, 0.18);
}

.notice-dialog h2 {
    margin: 0;
    font-size: 20px;
}

.notice-dialog p {
    margin: 0;
}

@media (max-width: 560px) {
    body {
        font-size: 16px;
    }

    .app-shell {
        display: block;
    }

    .app-sidebar {
        width: auto;
        min-height: auto;
    }

    .app-main {
        padding: 18px 14px 32px;
    }

    .topbar {
        display: grid;
    }

    .student-shell {
        padding: 14px 10px 28px;
    }

    .login-shell {
        align-items: start;
        padding: 14px 10px;
    }

    .login-card {
        padding: 16px;
    }

    .login-brand h1 {
        font-size: 20px;
    }

    .student-header {
        gap: 12px;
        margin-bottom: 12px;
    }

    .topbar h1,
    .student-header h1 {
        font-size: 22px;
    }

    .student-nav {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 6px;
        padding: 6px;
    }

    .student-nav-link {
        display: flex;
        align-items: center;
        justify-content: center;
        min-height: 44px;
        padding: 8px 6px;
        text-align: center;
        font-size: 14px;
    }

    .page-tabs {
        flex-wrap: nowrap;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .page-tab {
        flex: 0 0 auto;
        min-width: 94px;
        min-height: 44px;
        padding: 8px 12px;
        font-size: 14px;
    }

    .student-main,
    .student-main > .stack {
        width: 100%;
        min-width: 0;
        grid-template-columns: minmax(0, 1fr);
    }

    .student-main > *,
    .student-main .stack > *,
    .student-main form,
    .student-main .panel,
    .student-main .table-scroll {
        min-width: 0;
        max-width: 100%;
    }

    .panel {
        padding: 14px;
    }

    .course-form-panel {
        padding: 0;
    }

    .add-drop-course-panel {
        padding: 0;
    }

    .course-form-summary {
        display: grid;
        gap: 10px;
        padding: 14px;
    }

    .course-form-state {
        width: 100%;
    }

    .add-drop-course-summary {
        display: grid;
        gap: 10px;
        padding: 14px;
    }

    .add-drop-course-summary-meta {
        justify-content: flex-start;
    }

    .add-drop-course-body {
        padding: 0 14px 14px;
    }

    .course-form-panel > form,
    .course-edit-context {
        margin: 14px;
    }

    .panel-header {
        display: grid;
        gap: 10px;
        align-items: start;
    }

    .panel-title {
        font-size: 17px;
    }

    .panel-note {
        font-size: 14px;
    }

    .toolbar,
    .form-actions,
    .table-actions {
        display: grid;
        grid-template-columns: 1fr;
        align-items: stretch;
    }

    .button,
    .link-button,
    .input,
    .select,
    .textarea {
        width: 100%;
        min-height: 44px;
    }

    .result-plan-summary {
        display: grid;
        grid-template-columns: 1fr;
        align-items: start;
    }

    .result-plan-outcome {
        justify-content: flex-start;
        text-align: left;
    }

    .result-plan-outcome .status-badge {
        max-width: 100%;
        white-space: normal;
        overflow-wrap: anywhere;
    }

    .result-detail-row {
        grid-template-columns: 94px minmax(0, 1fr);
    }

    .student-main .data-table,
    .student-main .data-table thead,
    .student-main .data-table tbody,
    .student-main .data-table tr,
    .student-main .data-table th,
    .student-main .data-table td {
        display: block;
        width: 100%;
    }

    .student-main .data-table {
        min-width: 0;
        max-width: 100%;
        border-collapse: separate;
        border-spacing: 0;
    }

    .student-main .data-table thead {
        position: absolute;
        width: 1px;
        height: 1px;
        overflow: hidden;
        clip: rect(0 0 0 0);
        white-space: nowrap;
    }

    .student-main .data-table tr {
        margin-bottom: 10px;
        border: 1px solid var(--border);
        border-radius: 8px;
        background: #ffffff;
        overflow: hidden;
    }

    .student-main .data-table tr:last-child {
        margin-bottom: 0;
    }

    .student-main .data-table td {
        display: grid;
        grid-template-columns: minmax(86px, 34%) minmax(0, 1fr);
        gap: 10px;
        align-items: start;
        padding: 10px 12px;
        border-bottom: 1px solid var(--border);
        overflow-wrap: anywhere;
    }

    .student-main .data-table td:last-child {
        border-bottom: 0;
    }

    .student-main .data-table td::before {
        content: attr(data-label);
        color: #344054;
        font-size: 13px;
        font-weight: 700;
    }

    .student-main .data-table td[colspan] {
        grid-template-columns: 1fr;
    }

    .student-main .data-table td[colspan]::before {
        content: none;
    }

    .sidebar-nav,
    .stats-grid,
    .form-grid {
        grid-template-columns: 1fr;
    }

    .advanced-grid {
        grid-template-columns: 1fr;
    }

    .formula-row {
        display: grid;
        grid-template-columns: 1fr;
        gap: 4px;
    }

    .formula-symbol {
        min-height: 18px;
        font-size: 15px;
    }

    .field.formula-field {
        display: grid;
        grid-template-columns: minmax(92px, auto) minmax(70px, 1fr);
    }
}