:root {
  color-scheme: light;
  --bg: #f5f7f6;
  --surface: #ffffff;
  --surface-soft: #eef4f2;
  --ink: #203033;
  --muted: #627174;
  --line: #d8e1de;
  --teal: #16847a;
  --teal-dark: #0f5e58;
  --amber: #e59a2f;
  --amber-soft: #fff1d8;
  --danger: #ba3a3a;
  --success: #26764f;
  --shadow: 0 18px 42px rgba(22, 46, 48, 0.12);
  --radius: 8px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
}

button,
input,
textarea,
select {
  font: inherit;
}

button {
  align-items: center;
  border: 0;
  border-radius: var(--radius);
  cursor: pointer;
  display: inline-flex;
  font-weight: 700;
  gap: 8px;
  justify-content: center;
  min-height: 42px;
  padding: 0 14px;
  transition: background 160ms ease, color 160ms ease, border 160ms ease, transform 160ms ease;
  white-space: nowrap;
}

button:hover:not(:disabled) {
  transform: translateY(-1px);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.54;
}

button svg,
button i {
  flex: 0 0 auto;
  height: 18px;
  width: 18px;
}

input,
textarea,
select {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink);
  min-height: 42px;
  padding: 10px 12px;
  width: 100%;
}

textarea {
  line-height: 1.45;
  min-height: 112px;
  resize: vertical;
}

label {
  color: var(--muted);
  display: grid;
  font-size: 0.86rem;
  font-weight: 700;
  gap: 7px;
}

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

th,
td {
  border-bottom: 1px solid var(--line);
  padding: 13px 12px;
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--surface-soft);
  color: var(--muted);
  font-size: 0.78rem;
  text-transform: uppercase;
}

.app-shell {
  margin: 0 auto;
  max-width: 1440px;
  min-height: 100vh;
  padding: 24px;
}

.topbar {
  align-items: center;
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: flex;
  gap: 20px;
  justify-content: space-between;
  padding: 16px;
}

.brand {
  align-items: center;
  display: flex;
  gap: 14px;
  min-width: 240px;
}

.brand-mark {
  align-items: center;
  background: var(--teal);
  border-radius: var(--radius);
  color: white;
  display: grid;
  flex: 0 0 48px;
  font-weight: 800;
  height: 48px;
  justify-content: center;
  width: 48px;
}

.eyebrow {
  color: var(--amber);
  font-size: 0.75rem;
  font-weight: 800;
  margin: 0 0 4px;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  font-size: 1.45rem;
  line-height: 1.2;
  margin-bottom: 0;
}

h2 {
  font-size: 1.35rem;
  line-height: 1.25;
  margin-bottom: 0;
}

h3 {
  font-size: 1.05rem;
  margin-bottom: 0;
}

.view-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
}

.tab-button {
  background: transparent;
  border: 1px solid transparent;
  color: var(--muted);
}

.tab-button.active {
  background: var(--surface-soft);
  border-color: var(--line);
  color: var(--teal-dark);
}

.workspace {
  align-items: start;
  display: grid;
  gap: 18px;
  grid-template-columns: minmax(300px, 370px) minmax(0, 1fr);
  margin-top: 18px;
}

.summary-panel,
.view-section {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.summary-panel {
  position: sticky;
  top: 18px;
}

.summary-image {
  aspect-ratio: 16 / 9;
  display: block;
  object-fit: cover;
  width: 100%;
}

.summary-content {
  padding: 18px;
}

.metric-grid {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 18px;
}

.metric,
.audio-status,
.timer-panel {
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px;
}

.metric-label {
  color: var(--muted);
  display: block;
  font-size: 0.76rem;
  font-weight: 800;
  margin-bottom: 4px;
  text-transform: uppercase;
}

.metric strong,
.audio-status strong,
.timer-panel strong {
  display: block;
  font-size: 1.05rem;
}

.audio-status {
  align-items: center;
  display: flex;
  gap: 14px;
  margin-top: 10px;
}

.mini-wave {
  align-items: center;
  display: flex;
  gap: 4px;
  height: 42px;
  min-width: 70px;
}

.mini-wave span {
  background: var(--amber);
  border-radius: 999px;
  display: block;
  width: 6px;
}

.mini-wave span:nth-child(1) { height: 18px; }
.mini-wave span:nth-child(2) { height: 28px; }
.mini-wave span:nth-child(3) { height: 40px; }
.mini-wave span:nth-child(4) { height: 24px; }
.mini-wave span:nth-child(5) { height: 34px; }
.mini-wave span:nth-child(6) { height: 20px; }

.view-section {
  display: none;
  padding: 22px;
}

.view-section.active {
  display: block;
}

.section-header {
  align-items: center;
  border-bottom: 1px solid var(--line);
  display: flex;
  gap: 16px;
  justify-content: space-between;
  margin: -22px -22px 22px;
  padding: 18px 22px;
}

.section-header.compact {
  margin: -20px -20px 18px;
  padding: 16px 20px;
}

.timer-panel {
  min-width: 116px;
  text-align: right;
}

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

.set-management {
  align-items: end;
  display: grid;
  gap: 12px;
  grid-template-columns: minmax(240px, 1fr) auto auto;
}

.test-toolbar,
.admin-actions,
.question-editor-header,
.question-actions {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.test-toolbar {
  margin-top: 18px;
}

.primary-button {
  background: var(--teal);
  color: white;
}

.primary-button:hover:not(:disabled) {
  background: var(--teal-dark);
}

.secondary-button {
  background: var(--amber-soft);
  color: #68430e;
}

.secondary-button:hover:not(:disabled) {
  background: #ffe2ad;
}

.ghost-button {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--ink);
}

.ghost-button:hover:not(:disabled) {
  background: var(--surface-soft);
}

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

.test-state {
  margin: 20px 0;
}

.progress-track {
  background: var(--surface-soft);
  border-radius: 999px;
  height: 10px;
  overflow: hidden;
}

.progress-track span {
  background: var(--teal);
  display: block;
  height: 100%;
  transition: width 180ms ease;
  width: 0%;
}

.state-line {
  color: var(--muted);
  display: flex;
  font-size: 0.86rem;
  font-weight: 700;
  justify-content: space-between;
  margin-top: 8px;
}

.question-list,
.question-editor {
  display: grid;
  gap: 14px;
}

.question-card,
.editor-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
}

.question-card legend,
.question-card h3 {
  color: var(--ink);
  font-size: 1rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.option-list {
  display: grid;
  gap: 9px;
}

.option-row {
  align-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink);
  display: flex;
  font-weight: 600;
  gap: 9px;
  min-height: 42px;
  padding: 9px 10px;
}

.option-row input {
  flex: 0 0 auto;
  min-height: auto;
  padding: 0;
  width: auto;
}

.score-summary {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin-bottom: 16px;
  padding: 16px;
}

.score-summary.pass {
  background: #ebf6ef;
  border-color: #b8ddc8;
  color: var(--success);
}

.score-summary.fail {
  background: #fff0f0;
  border-color: #e8b8b8;
  color: var(--danger);
}

.admin-layout {
  display: grid;
  gap: 14px;
}

.admin-account-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin-top: 18px;
  padding: 16px;
}

.create-admin-form {
  align-items: end;
  display: grid;
  gap: 12px;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) auto;
  margin-top: 14px;
}

.inline-status {
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 700;
  margin: 10px 0 0;
}

.inline-status.success {
  color: var(--success);
}

.inline-status.error {
  color: var(--danger);
}

.wide-field {
  margin-top: 4px;
}

.file-field input {
  padding: 8px;
}

.question-editor-header {
  border-bottom: 1px solid var(--line);
  justify-content: space-between;
  margin: 22px -22px 18px;
  padding: 0 22px 16px;
}

.question-actions {
  justify-content: flex-end;
}

.editor-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr 160px 110px;
}

.editor-card textarea {
  min-height: 84px;
}

.editor-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 12px;
}

.results-table-wrap {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: auto;
}

.status-pill {
  border-radius: 999px;
  display: inline-flex;
  font-size: 0.78rem;
  font-weight: 800;
  padding: 5px 9px;
}

.status-pill.pass {
  background: #e3f4ea;
  color: var(--success);
}

.status-pill.fail {
  background: #ffe9e9;
  color: var(--danger);
}

.status-pill.pending {
  background: #fff4d8;
  color: #8a5a00;
}

.status-pill.neutral {
  background: #e9eef0;
  color: var(--muted);
}

.mini-button {
  background: #eef7f6;
  border: 1px solid #bddbd7;
  border-radius: 8px;
  color: var(--teal-dark);
  font-size: 0.78rem;
  font-weight: 800;
  padding: 6px 9px;
}

.mini-button:hover:not(:disabled) {
  background: #dff0ee;
}

.muted-cell {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
}

.empty-state {
  color: var(--muted);
  font-weight: 700;
  margin: 18px 0 0;
  text-align: center;
}

.modal-backdrop {
  align-items: center;
  background: rgba(25, 37, 40, 0.42);
  display: flex;
  inset: 0;
  justify-content: center;
  padding: 20px;
  position: fixed;
  z-index: 40;
}

.modal-panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: grid;
  gap: 14px;
  max-width: 440px;
  padding: 20px;
  width: min(100%, 440px);
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
}

@media (max-width: 980px) {
  .workspace {
    grid-template-columns: 1fr;
  }

  .summary-panel {
    position: static;
  }

  .candidate-grid,
  .admin-fields,
  .editor-grid,
  .create-admin-form,
  .set-management {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .app-shell {
    padding: 12px;
  }

  .topbar,
  .section-header {
    align-items: stretch;
    flex-direction: column;
  }

  .brand {
    min-width: 0;
  }

  .view-tabs,
  .test-toolbar,
  .admin-actions,
  .question-actions {
    justify-content: stretch;
  }

  .view-tabs button,
  .test-toolbar button,
  .admin-actions button,
  .question-actions button {
    flex: 1 1 150px;
  }

  .view-section {
    padding: 16px;
  }

  .section-header {
    margin: -16px -16px 18px;
    padding: 16px;
  }

  .question-editor-header {
    margin-left: -16px;
    margin-right: -16px;
    padding-left: 16px;
    padding-right: 16px;
  }

  .timer-panel {
    text-align: left;
  }
}