:root {
  --bg: #f5f7fb;
  --card: #ffffff;
  --ink: #172033;
  --muted: #657188;
  --border: #dfe5f2;
  --primary: #2457d6;
  --primary-dark: #183f9e;
  --success-bg: #eaf7ef;
  --success: #176b3a;
  --error-bg: #fdecec;
  --error: #a12828;
  --warning-bg: #fff7e6;
  --warning: #8a5a00;
  --neutral-bg: #eef3ff;
  --header-block-size: 62px;
  --header-logo-ratio: 0.58;
  --header-logo-size: calc(var(--header-block-size) * var(--header-logo-ratio));
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a {
  color: var(--primary);
  text-decoration: none;
}

.brand-link {
  display: grid;
  grid-template-columns: var(--header-logo-size) minmax(0, 1fr);
  column-gap: max(8px, calc(var(--header-logo-size) * 0.28));
  align-items: center;
  color: inherit;
  text-decoration: none;
}

.brand-link::before {
  content: "";
  grid-row: 1 / span 3;
  width: var(--header-logo-size);
  height: var(--header-logo-size);
  background: url("../pix/pulseLogo.png") center / contain no-repeat;
}

.brand-link:hover .institution-name,
.brand-link:hover h1 {
  color: var(--primary-dark);
}

.hidden {
  display: none !important;
}

/* Keep semantic hidden elements hidden even when a component class sets display:grid/flex. */
[hidden] {
  display: none !important;
}

/* Header */

.app-header,
.live-header {
  --header-logo-size: calc(var(--header-block-size) * var(--header-logo-ratio));
  min-height: var(--header-block-size);
  background: var(--card);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 28px;
}

/* The logo scales from the header block size, so thicker headers keep the brand mark in proportion. */
.live-header:has(.session-code-badge:not(:empty)) {
  --header-block-size: clamp(70px, 9vw, 104px);
}

.institution-name,
.live-header h1 {
  font-weight: 800;
  letter-spacing: -0.01em;
  margin: 0;
}

.department-name,
.session-subtitle {
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 3px;
}

.session-code-badge {
  margin-top: 5px;
  color: #000000;
  font-size: clamp(2rem, 5vw, 4.25rem);
  line-height: 1;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.session-join-qr-panel {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  padding: 8px 12px 8px 8px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--card);
  box-shadow: 0 6px 18px rgba(23, 32, 51, 0.08);
}

.session-join-qr-code {
  width: 132px;
  height: 132px;
  flex: 0 0 132px;
  display: grid;
  place-items: center;
  overflow: hidden;
  border-radius: 10px;
  background: #ffffff;
}

.session-join-qr-code img,
.session-join-qr-code canvas {
  display: block;
  width: 132px !important;
  height: 132px !important;
}

.session-join-qr-code.qr-unavailable {
  padding: 10px;
  box-sizing: border-box;
  color: var(--error);
  font-size: 0.82rem;
  font-weight: 700;
  text-align: center;
}

.session-join-qr-copy {
  max-width: 170px;
  display: grid;
  gap: 5px;
}

.session-join-qr-copy strong {
  font-size: 1rem;
}

.session-join-qr-copy span {
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.3;
}

.session-join-qr-copy a {
  width: fit-content;
  font-size: 0.82rem;
  font-weight: 700;
}

.session-join-fallback {
  margin-top: 2px;
  color: var(--muted);
  font-size: 0.7rem;
  line-height: 1.35;
}

.session-join-fallback a {
  display: block;
  margin-top: 1px;
  font-size: inherit;
  font-weight: 600;
  overflow-wrap: anywhere;
}

.header-actions,
.header-buttons,
.button-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

/* Layout */

.page-shell {
  width: min(1120px, calc(100% - 32px));
  margin: 32px auto;
}

.live-layout {
  width: min(1280px, calc(100% - 32px));
  margin: 32px auto;
}

.login-shell {
  display: grid;
  place-items: center;
}

/* Cards */

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 28px;
  box-shadow: 0 12px 34px rgba(23, 32, 51, 0.05);
  margin-bottom: 18px;
}

.login-card {
  width: min(620px, 100%);
}

.login-brand-mark {
  display: block;
  width: min(190px, 58vw);
  height: auto;
  margin: 0 auto 22px;
}

.login-card h1 {
  text-align: center;
}

.login-card > .button-row {
  justify-content: center;
}

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

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

/* Buttons */

.button,
button.primary,
button.secondary,
button.ghost,
.primary,
.secondary,
.ghost {
  border: 0;
  border-radius: 14px;
  padding: 11px 15px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.button.primary,
button.primary,
.primary {
  background: var(--primary);
  color: #fff;
}

.button.primary:hover,
button.primary:hover,
.primary:hover {
  background: var(--primary-dark);
}

.button.ghost,
button.ghost,
.ghost,
.secondary,
button.secondary {
  background: #eef3ff;
  color: var(--primary-dark);
}

.button:disabled,
button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.full-width {
  width: 100%;
}

/* Status panels */

.status-panel {
  border-radius: 16px;
  padding: 14px 16px;
  margin: 18px 0;
  border: 1px solid transparent;
}

.status-panel.neutral {
  background: var(--neutral-bg);
  color: var(--primary-dark);
  border-color: #c9d8ff;
}

.status-panel.success {
  background: var(--success-bg);
  color: var(--success);
  border-color: #b9e4c8;
}

.status-panel.error {
  background: var(--error-bg);
  color: var(--error);
  border-color: #f4c4c4;
}

.status-panel.warning {
  background: var(--warning-bg);
  color: var(--warning);
  border-color: #ffd88a;
}

.session-expiry-prompt {
  position: fixed;
  inset: 0;
  z-index: 2200;
  display: grid;
  place-items: center;
  padding: 18px;
  background: rgba(23, 32, 51, 0.42);
}

.session-expiry-card {
  width: min(520px, 100%);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 24px;
  background: #ffffff;
  box-shadow: 0 24px 70px rgba(23, 32, 51, 0.24);
}

.session-expiry-card h2 {
  margin-bottom: 8px;
}

.session-expiry-card p {
  color: var(--muted);
}

.session-metadata-modal {
  position: fixed;
  inset: 0;
  z-index: 1300;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(15, 23, 42, 0.42);
}

.session-metadata-card {
  width: min(560px, 100%);
  max-height: min(720px, calc(100vh - 40px));
  overflow: auto;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 24px;
  box-shadow: 0 22px 70px rgba(23, 32, 51, 0.24);
}

.session-metadata-card h2 {
  margin-bottom: 6px;
}

.session-metadata-actions {
  justify-content: flex-end;
  margin-top: 18px;
}

/* Settings */

.settings-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 22px 0;
  border-bottom: 1px solid var(--border);
  padding-bottom: 12px;
}

.settings-tab {
  border: 1px solid var(--border);
  border-radius: 999px;
  background: #fff;
  color: var(--ink);
  padding: 10px 14px;
  font-weight: 800;
}

.settings-tab.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.settings-panel {
  display: none;
}

.settings-panel.active {
  display: block;
}

.settings-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.settings-grid label,
.form-mapping-row {
  display: grid;
  gap: 7px;
  font-weight: 700;
}

.settings-grid input,
.settings-grid select,
.settings-grid textarea,
.form-mapping-row select {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 11px 12px;
  font: inherit;
  background: #fff;
  color: var(--ink);
}

.settings-grid textarea {
  resize: vertical;
}

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

.checkbox-label {
  align-content: start;
  grid-template-columns: auto 1fr;
  align-items: center;
  min-height: 48px;
}

.checkbox-label input {
  width: auto;
}

.settings-radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 16px 0;
}

.settings-subsection {
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}

.radio-card {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 11px 13px;
  background: #fff;
  font-weight: 800;
  cursor: pointer;
}

.form-mapping-grid {
  display: grid;
  gap: 12px;
  margin-top: 16px;
}

.form-mapping-row {
  grid-template-columns: minmax(220px, 0.9fr) minmax(240px, 1.1fr);
  align-items: center;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #fafcff;
}

.form-mapping-label {
  font-weight: 800;
}

.form-mapping-label small {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-weight: 500;
}

.permissions-grid {
  display: grid;
  gap: 14px;
  margin-top: 16px;
}

.permissions-role-card {
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #fafcff;
  padding: 14px;
}

.permissions-role-card h3 {
  margin: 0 0 10px;
}

.permissions-options {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.permissions-options .checkbox-label {
  min-height: 0;
  font-weight: 700;
}

.settings-actions {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}

.report-empty {
  border: 1px dashed var(--border);
  border-radius: 14px;
  padding: 16px;
  color: var(--muted);
  background: #fafcff;
}

.settings-preview {
  min-height: 160px;
  max-height: 360px;
  overflow: auto;
  background: #101828;
  color: #d9e7ff;
  padding: 16px;
  border-radius: 16px;
  white-space: pre-wrap;
}

/* Workspace */

.department-chooser,
.workspace-grid {
  display: grid;
  gap: 16px;
  margin-top: 18px;
}

.department-card {
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 18px;
  background: #fff;
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: flex-start;
}

/* Canonical activity toolbar: horizontal everywhere */

.activity-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.activity-toolbar button {
  border: 0;
  border-radius: 14px;
  background: #f0f4fb;
  color: var(--ink);
  padding: 13px 15px;
  font-weight: 700;
  cursor: pointer;
}

.activity-toolbar button:hover {
  background: #e6edf9;
}

.dev-activity-wrapper-bar {
  display: grid;
  gap: 12px;
  padding: 14px clamp(14px, 3vw, 28px);
  border-bottom: 1px solid var(--border);
  background: #f8fbff;
}

.dev-activity-wrapper-fields {
  display: grid;
  grid-template-columns: minmax(150px, 0.8fr) minmax(260px, 2fr) minmax(90px, 0.5fr) minmax(90px, 0.5fr);
  gap: 10px;
  align-items: end;
}

.dev-activity-wrapper-bar label {
  display: grid;
  gap: 5px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
}

.dev-activity-wrapper-bar input,
.dev-activity-wrapper-bar select {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 9px 10px;
  color: var(--ink);
  font: inherit;
  font-size: 0.92rem;
  background: #fff;
  box-sizing: border-box;
}

.dev-activity-wrapper-bar .button-row {
  justify-content: flex-start;
}

.dev-activity-wrapper-bar .status-panel {
  margin: 0;
}

@media (max-width: 900px) {
  .dev-activity-wrapper-fields {
    grid-template-columns: 1fr 1fr;
  }

  .dev-activity-wrapper-question {
    grid-column: 1 / -1;
  }
}

@media (max-width: 560px) {
  .dev-activity-wrapper-fields {
    grid-template-columns: 1fr;
  }
}

/* Activity Stack */

.activity-stack-panel,
.teaching-stage {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 32px;
  box-shadow: 0 12px 34px rgba(23, 32, 51, 0.05);
  min-height: 420px;
  display: grid;
  grid-template-rows: auto 1fr;
  align-items: stretch;
  margin-top: 18px;
}

.activity-stack-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
}

.activity-stack-panel-header h2 {
  margin: 0;
  font-size: 1.25rem;
}

.activity-stack-toggle {
  border: 1px solid var(--border);
  border-radius: 999px;
  background: #ffffff;
  color: var(--ink);
  padding: 8px 12px;
  font: inherit;
  font-size: 0.9rem;
  font-weight: 800;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.activity-stack-toggle:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.activity-stack-panel.is-collapsed {
  min-height: 0;
}

.activity-stack-panel.is-collapsed .activity-stack-panel-header {
  margin-bottom: 0;
}

.student-activity-stack-panel {
  min-height: 220px;
}

.empty-stage {
  align-self: center;
  justify-self: center;
  text-align: center;
  color: var(--muted);
}

.empty-stage h2 {
  font-size: clamp(2rem, 6vw, 4rem);
  margin-bottom: 8px;
}

.empty-stage-logo {
  display: block;
  width: min(180px, 42vw);
  height: auto;
  margin: 28px auto 0;
  opacity: 0.9;
}

.student-activity-placeholder {
  text-align: center;
  border: 1px dashed var(--border);
  padding: 30px;
  border-radius: 18px;
  background: #fafcff;
}

/* Drawers */

.drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.35);
  z-index: 900;
}

.drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: 420px;
  max-width: 95vw;
  height: 100vh;
  background: #fff;
  box-shadow: -6px 0 18px rgba(0, 0, 0, 0.15);
  z-index: 1000;
  display: flex;
  flex-direction: column;
}

.drawer-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 24px;
  border-bottom: 1px solid #e5e5e5;
}

.drawer-header h2 {
  margin: 0;
}

.drawer-content {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
}

.drawer-footer {
  padding: 20px;
  border-top: 1px solid #e5e5e5;
}

.drawer label {
  display: block;
  margin-bottom: 20px;
  font-weight: 600;
}

.drawer input[type="text"],
.drawer input[type="number"],
.drawer textarea {
  width: 100%;
  margin-top: 8px;
  padding: 10px;
  font-size: 1rem;
  border: 1px solid #cccccc;
  border-radius: 8px;
}

.drawer label.editor-field-invalid {
  color: #1d4ed8;
}

.drawer input.editor-field-invalid,
.drawer textarea.editor-field-invalid {
  border-color: #2563eb;
  border-width: 2px;
  color: #1d4ed8;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.16);
}

.drawer input.editor-field-invalid::placeholder,
.drawer textarea.editor-field-invalid::placeholder {
  color: #60a5fa;
}

.drawer input.editor-field-invalid:focus,
.drawer textarea.editor-field-invalid:focus {
  outline: 3px solid rgba(37, 99, 235, 0.28);
  outline-offset: 2px;
}

.poll-option {
  margin-bottom: 12px;
}

.duration-selector {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-bottom: 20px;
}

.duration-selector label {
  margin-bottom: 0;
  font-weight: normal;
}

.autosave-status {
  margin-bottom: 20px;
  color: var(--success);
  font-weight: 700;
}

.ai-assist-panel {
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 14px;
  margin-bottom: 22px;
  background: #f8fbff;
  cursor: pointer;
}

.ai-assist-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.ai-assist-header h3 {
  margin: 0 0 4px;
}

.ai-assist-header p {
  margin: 0;
}

.ai-assist-action {
  align-self: center;
  border-radius: 999px;
  padding: 10px 16px;
  background: var(--primary);
  color: #ffffff;
  font-weight: 800;
  white-space: nowrap;
}

.ai-assist-body {
  margin-top: 14px;
  cursor: default;
}

.ai-assist-body .button-row {
  align-items: stretch;
  margin-bottom: 12px;
}

.ai-assist-body button.ai-assist-highlight {
  border-color: var(--primary);
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 0 0 3px rgba(47, 95, 235, 0.16);
}

.ai-assist-body button:disabled.ai-assist-highlight {
  opacity: 0.55;
  box-shadow: none;
}

.ai-action-mode {
  display: grid;
  gap: 8px;
  margin: 12px 0;
  font-size: 0.92rem;
}

.ai-action-mode label {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  font-weight: 600;
}

.ai-result-preview {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px;
  margin-top: 12px;
  background: #ffffff;
  font-size: 0.92rem;
}

.ai-result-preview h4 {
  margin: 0 0 8px;
}

.ai-result-preview ul {
  margin: 8px 0 0 20px;
  padding: 0;
}

/* Saved polls */

.saved-poll {
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  margin-top: 14px;
  cursor: pointer;
  transition: background 0.15s;
}

.saved-poll:hover {
  background: #f7f7f7;
}

.saved-title {
  font-weight: 700;
}

.saved-meta {
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 6px;
}

/* Misc */

.seed-log {
  min-height: 260px;
  max-height: 420px;
  overflow: auto;
  background: #101828;
  color: #d9e7ff;
  padding: 16px;
  border-radius: 16px;
  white-space: pre-wrap;
}

.timeline {
  line-height: 2;
}

/* QR scanner */

.qr-scanner-page {
  margin-top: 20px;
}

.qr-context-card {
  margin-bottom: 16px;
}

.qr-context-grid input[readonly] {
  background: #f4f7fb;
  color: var(--muted);
}

.qr-scanner-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  gap: 16px;
  align-items: start;
}

.qr-camera-card {
  display: grid;
  gap: 16px;
}

.qr-video-shell {
  position: relative;
  overflow: hidden;
  border-radius: 18px;
  background: #050812;
  aspect-ratio: 16 / 10;
  min-height: 320px;
}

.qr-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.qr-feedback {
  position: absolute;
  inset: auto 16px 16px 16px;
  min-height: 96px;
  border-radius: 18px;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 16px;
  color: #ffffff;
  background: rgba(23, 32, 51, 0.76);
  border: 2px solid rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(8px);
}

.qr-feedback strong {
  display: block;
  font-size: clamp(2.2rem, 8vw, 5.5rem);
  line-height: 0.95;
}

.qr-feedback span {
  font-size: 1.05rem;
  font-weight: 800;
}

.qr-feedback.success {
  background: rgba(23, 107, 58, 0.9);
}

.qr-feedback.error {
  background: rgba(161, 40, 40, 0.92);
}

.qr-feedback.duplicate {
  background: rgba(36, 87, 214, 0.9);
}

.qr-feedback.neutral {
  background: rgba(23, 32, 51, 0.76);
}

.qr-scan-summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 20px;
}

.qr-scan-summary div {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px;
  background: #fafcff;
}

.qr-scan-summary span,
.qr-scan-summary strong {
  display: block;
}

.qr-scan-summary strong {
  margin-top: 4px;
  font-size: 1.8rem;
}

.qr-scan-list {
  display: grid;
  gap: 10px;
  max-height: 420px;
  overflow: auto;
}

.qr-scan-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4px 12px;
  align-items: center;
  border: 1px solid var(--border);
  border-left: 6px solid var(--success);
  border-radius: 14px;
  padding: 12px;
  background: #ffffff;
}

.qr-scan-item strong {
  font-size: 1.1rem;
}

.qr-scan-item span {
  color: var(--muted);
}

.qr-scan-item small {
  grid-column: 2;
  grid-row: 1 / span 2;
  color: var(--muted);
  font-weight: 800;
}

.lecture-qr-card {
  width: min(100%, 1120px);
}

.lecture-qr-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(300px, 0.85fr);
  gap: 18px;
  align-items: start;
  margin-top: 18px;
}

.lecture-qr-video-shell {
  position: relative;
  overflow: hidden;
  border-radius: 18px;
  background: #050812;
  aspect-ratio: 16 / 10;
  min-height: 320px;
}

/* Responsive */

@media (max-width: 720px) {
  .app-header,
  .live-header,
  .department-card {
    flex-direction: column;
    align-items: stretch;
  }

  .app-header,
  .live-header {
    gap: 10px;
    padding: 10px 28px;
  }

  .app-header,
  .live-header {
    --header-block-size: 58px;
  }

  .live-header:has(.session-code-badge:not(:empty)) {
    --header-block-size: clamp(76px, 18vw, 104px);
  }

  .institution-name,
  .live-header h1 {
    font-size: 1.08rem;
    line-height: 1.15;
  }

  .department-name,
  .session-subtitle {
    font-size: 0.84rem;
    margin-top: 2px;
  }

  /* On phones, green success/status confirmations are deliberately hidden.
     They are useful on desktop, but in class they consume scarce vertical space once an action has succeeded.
     Red errors and amber warnings remain visible because the user may need to act on them. */
  .status-panel.success {
    display: none !important;
  }

  /* Mobile lecturer UI keeps errors visible, but removes passive status copy that costs vertical space. */
  .live-header .session-subtitle,
  .live-layout .empty-stage p,
  #slidesExportStatus.muted,
  #slidesExportStatus.status-panel:not(.error),
  #lectureQrStatus.status-panel:not(.error),
  .short-response-note.status-panel.neutral {
    display: none;
  }

  .page-shell,
  .live-layout {
    width: min(100% - 20px, 680px);
    margin: 18px auto;
  }

  .card,
  .activity-stack-panel,
  .teaching-stage {
    border-radius: 18px;
    padding: 18px;
  }

  .session-join-qr-panel {
    width: 100%;
    box-sizing: border-box;
    justify-content: center;
  }

  .session-join-qr-code {
    width: 108px;
    height: 108px;
    flex-basis: 108px;
  }

  .session-join-qr-code img,
  .session-join-qr-code canvas {
    width: 108px !important;
    height: 108px !important;
  }

  .header-actions,
  .header-buttons {
    width: 100%;
  }

  .header-actions .button,
  .header-buttons button,
  .header-buttons .button,
  .button-row .button {
    flex: 1 1 auto;
    min-height: 40px;
  }

  .department-card .button-row,
  .department-card .button {
    width: 100%;
  }

  .workspace-grid,
  .department-chooser {
    grid-template-columns: 1fr;
  }

  .activity-toolbar {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  body.device-phone.chooser-page #logoutButton {
    display: none;
  }

  .qr-scanner-layout,
  .lecture-qr-layout,
  .settings-grid.qr-context-grid {
    grid-template-columns: 1fr;
  }

  .qr-scanner-page {
    margin-top: 12px;
  }

  .qr-context-card h1 {
    font-size: 1.75rem;
    line-height: 1.15;
    margin-bottom: 10px;
  }

  .qr-context-card > .muted {
    margin: 0 0 12px;
  }

  .qr-context-card .status-panel {
    margin: 12px 0;
    padding: 12px 14px;
  }

  .settings-grid.qr-context-grid {
    gap: 10px;
    margin-top: 12px;
  }

  .qr-context-grid label {
    gap: 5px;
  }

  .qr-context-grid input,
  .qr-context-grid select {
    min-height: 42px;
    padding: 9px 11px;
  }

  .qr-context-card .button-row {
    gap: 8px;
    margin-top: 12px;
  }

  .result-visual-grid {
    grid-template-columns: 1fr;
  }

  .choice-pie {
    width: min(210px, 72vw);
  }

  .qr-video-shell,
  .lecture-qr-video-shell {
    min-height: 280px;
    aspect-ratio: 4 / 5;
  }

  .qr-scan-summary {
    grid-template-columns: 1fr 1fr 1fr;
  }

  .settings-grid,
  .permissions-options,
  .form-mapping-row {
    grid-template-columns: 1fr;
  }

  .settings-actions {
    justify-content: stretch;
  }

  .settings-actions .button {
    width: 100%;
  }

  .activity-toolbar button {
    min-height: 54px;
    padding: 12px;
  }

  .drawer {
    width: 100vw;
    max-width: 100vw;
  }

  .drawer-content {
    padding-bottom: 96px;
  }

  .drawer-footer {
    padding-bottom: calc(20px + env(safe-area-inset-bottom, 0px));
  }

  .seed-log {
    max-height: 300px;
    font-size: 0.82rem;
  }
}

@media (max-width: 430px) {
  .activity-toolbar {
    grid-template-columns: 1fr;
  }
}


.activity-preview h2 {
  margin-bottom: 6px;
}

.preview-question {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 24px 0;
  line-height: 1.4;
}

.preview-options {
  display: grid;
  gap: 10px;
  margin-bottom: 24px;
}

.preview-option {
  display: flex;
  gap: 12px;
  align-items: center;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fafcff;
}

.preview-option strong {
  background: var(--neutral-bg);
  color: var(--primary-dark);
  border-radius: 999px;
  min-width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
}

/* Activity tiles */

.activity-tile,
.live-poll-card,
.student-poll-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 28px;
  box-shadow: 0 12px 34px rgba(23, 32, 51, 0.05);
}

.activity-tile-header,
.live-poll-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
  margin-bottom: 22px;
}

.live-activity-collapsed {
  padding: 18px 22px;
}

.live-activity-collapsed .activity-tile-header,
.live-activity-collapsed .live-poll-header {
  margin-bottom: 8px;
}

.live-activity-collapsed h2 {
  font-size: 1.15rem;
  margin-bottom: 4px;
}

.live-activity-collapsed .muted {
  margin-bottom: 3px;
}

.live-activity-body {
  margin-top: 18px;
}

.live-card-actions {
  display: flex;
  align-items: flex-start;
  justify-content: flex-end;
  gap: 12px;
  flex-wrap: wrap;
}

.lecture-qr-card .live-card-actions .button-row {
  justify-content: flex-end;
  margin: 0;
}

.live-accordion-toggle,
.live-accordion-state {
  border: 1px solid var(--border);
  border-radius: 999px;
  background: #ffffff;
  color: var(--ink);
  padding: 8px 12px;
  font-size: 0.9rem;
  font-weight: 800;
  white-space: nowrap;
}

.live-accordion-toggle {
  cursor: pointer;
}

.live-accordion-toggle:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* Activity deletion is deliberately low-emphasis: rescinding a launched activity is possible, but should not look like the primary in-class action. */
.activity-delete-button {
  appearance: none;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: #ffffff;
  color: var(--muted);
  padding: 8px 12px;
  font: inherit;
  font-size: 0.9rem;
  font-weight: 800;
  line-height: 1.2;
  white-space: nowrap;
  cursor: pointer;
  box-shadow: none;
}

.activity-delete-button:hover,
.activity-delete-button:focus-visible {
  border-color: #ffd0ca;
  color: #b42318;
  background: #fff8f7;
}

.activity-end-button {
  appearance: none;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: #ffffff;
  color: var(--muted);
  padding: 8px 12px;
  font: inherit;
  font-size: 0.9rem;
  font-weight: 800;
  line-height: 1.2;
  white-space: nowrap;
  cursor: pointer;
  box-shadow: none;
}

.activity-end-button:hover,
.activity-end-button:focus-visible {
  border-color: #fed7aa;
  color: #c2410c;
  background: #fff7ed;
}

.live-accordion-state {
  background: var(--neutral-bg);
  color: var(--muted);
}

.live-activity-collapsed-summary {
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 700;
}

.live-toggle,
.checkbox-row {
  display: flex !important;
  align-items: flex-start;
  gap: 10px;
  font-weight: 600;
}

.live-toggle input,
.checkbox-row input {
  margin-top: 4px;
}

.checkbox-row small {
  display: block;
  color: var(--muted);
  font-weight: 400;
  margin-top: 4px;
  line-height: 1.4;
}

.result-bars {
  display: grid;
  gap: 18px;
}

.result-visual-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(180px, 240px);
  gap: 22px;
  align-items: start;
}

.choice-pie-panel {
  border: 1px solid var(--border);
  border-radius: 16px;
  background: #fbfdff;
  padding: 14px;
  display: grid;
  justify-items: center;
  gap: 12px;
}

.choice-pie {
  width: min(170px, 100%);
  aspect-ratio: 1;
  border-radius: 50%;
  border: 1px solid #d7e0fa;
}

.choice-pie.empty {
  opacity: 0.72;
}

.choice-pie-legend {
  width: 100%;
  display: grid;
  gap: 7px;
}

.choice-pie-legend-row {
  display: grid;
  grid-template-columns: 12px minmax(28px, auto) auto auto;
  gap: 7px;
  align-items: center;
  font-size: 0.86rem;
}

.choice-pie-key {
  width: 12px;
  height: 12px;
  border-radius: 999px;
}

.choice-pie-legend-row strong,
.choice-pie-legend-row small {
  text-align: right;
}

.choice-pie-legend-row small {
  color: var(--muted);
  font-weight: 700;
}

.result-label {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 7px;
  font-size: 0.95rem;
}

.result-track {
  width: 100%;
  height: 16px;
  border-radius: 999px;
  overflow: hidden;
  background: var(--neutral-bg);
  border: 1px solid #d7e0fa;
}

.result-fill {
  height: 100%;
  width: 0;
  background: var(--primary);
  border-radius: inherit;
  transition: width 0.35s ease;
}

.result-summary {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
  color: var(--muted);
  font-size: 0.9rem;
}

.result-summary span {
  background: #f7f9fe;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 10px;
}

.short-response-list {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.short-response-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.short-response-word-cloud {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  align-content: center;
  justify-content: center;
  gap: 10px 14px;
  width: 100%;
  max-width: 100%;
  min-height: 160px;
  max-height: min(44vh, 360px);
  margin-top: 18px;
  padding: 18px;
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: #fbfdff;
  box-sizing: border-box;
}

.short-response-word-cloud.empty {
  min-height: 96px;
}

.short-response-word-cloud .word-cloud-term {
  display: inline-flex;
  flex: 0 1 auto;
  align-items: baseline;
  justify-content: center;
  max-width: min(100%, 22ch);
  color: var(--primary-dark);
  font-weight: 900;
  line-height: 1.05;
  min-width: 0;
  text-align: center;
  white-space: normal;
}

.short-response-word-cloud .word-cloud-word {
  min-width: 0;
  overflow-wrap: anywhere;
  word-break: normal;
}

.short-response-word-cloud small {
  flex: 0 0 auto;
  margin-left: 4px;
  color: var(--muted);
  font-size: 0.72rem;
}

.short-response-word-cloud .word-cloud-more {
  flex: 0 0 auto;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 5px 9px;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 800;
  background: #ffffff;
}

.short-response-frequency-list {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 16px;
  width: 100%;
  max-width: 100%;
  margin-top: 14px;
  padding: 14px 16px;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #ffffff;
  box-sizing: border-box;
}

.short-response-frequency-list .frequency-term {
  display: inline-flex;
  align-items: baseline;
  max-width: min(100%, 20ch);
  min-width: 0;
  color: var(--ink);
  font-weight: 850;
  line-height: 1.1;
}

.short-response-frequency-list .frequency-word {
  min-width: 0;
  overflow-wrap: anywhere;
}

.short-response-frequency-list small {
  flex: 0 0 auto;
  margin-left: 4px;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 800;
}

.short-response-visual-panel {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.short-response-visual-toggle {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip-button {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 7px 12px;
  background: #ffffff;
  color: var(--muted);
  font: inherit;
  font-size: 0.86rem;
  font-weight: 800;
  cursor: pointer;
}

.chip-button.active,
.chip-button[aria-pressed="true"] {
  border-color: var(--primary);
  background: rgba(37, 99, 235, 0.1);
  color: var(--primary-dark);
}

.short-response-wordcloud-canvas {
  width: 100%;
  min-height: 260px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #ffffff;
  overflow: hidden;
}

.short-response-wordcloud-canvas.final {
  min-height: min(56vh, 460px);
}

.short-response-wordcloud-canvas.frozen {
  display: grid;
  place-items: center;
}

.short-response-wordcloud-canvas.pending {
  min-height: 180px;
}

.short-response-wordcloud-canvas.frozen img {
  display: block;
  width: 100%;
  height: auto;
}

@media (max-width: 640px) {
  .short-response-word-cloud {
    gap: 8px 10px;
    min-height: 130px;
    max-height: 34vh;
    padding: 14px;
  }

  .short-response-word-cloud .word-cloud-term {
    max-width: min(100%, 16ch);
  }

  .short-response-frequency-list {
    gap: 7px 12px;
    padding: 12px;
  }

  .short-response-frequency-list .frequency-term {
    max-width: min(100%, 15ch);
  }
}

.short-response-note {
  margin-top: 18px;
}

.short-response-themes {
  margin-top: 18px;
}

.short-response-themes h3 {
  margin: 0 0 12px;
}

.short-response-theme-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
}

.short-response-theme-card {
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #fbfdff;
  padding: 12px;
}

.short-response-theme-card strong,
.short-response-theme-card span {
  display: block;
}

.short-response-theme-card span {
  margin-top: 5px;
  color: var(--primary-dark);
  font-weight: 900;
}

.short-response-theme-card p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.short-response-theme-card ul,
.short-response-ai-section ul {
  margin: 8px 0 0;
  padding-left: 1.15rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.short-response-ai-section {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.short-response-ai-section p {
  margin: 8px 0 0;
  color: var(--muted);
}

.short-response-item {
  display: grid;
  grid-template-columns: minmax(120px, 180px) minmax(0, 1fr) auto;
  gap: 12px;
  align-items: start;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px;
  background: #fbfdff;
}

.short-response-item span {
  min-width: 0;
  overflow-wrap: anywhere;
}

.short-response-item small {
  color: var(--muted);
  font-weight: 700;
}

.slider-result-summary {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 18px;
}

.slider-result-summary div {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px;
  background: #fbfdff;
}

.slider-result-summary span,
.slider-result-summary strong {
  display: block;
}

.slider-result-summary strong {
  margin-top: 4px;
  font-size: 1.4rem;
}

.slider-chart-card {
  border: 1px solid var(--border);
  border-radius: 16px;
  background: #fbfdff;
  padding: 14px;
}

.slider-chart-header {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
  color: var(--muted);
}

.slider-chart-header strong {
  color: var(--ink);
}

.slider-line-chart {
  display: block;
  width: 100%;
  height: auto;
  min-height: 190px;
}

.slider-quintile-band {
  stroke: rgba(54, 88, 216, 0.08);
}

.slider-axis {
  stroke: #9aa8c2;
  stroke-width: 2;
}

.slider-average-line {
  stroke: var(--primary);
  stroke-width: 2;
  stroke-dasharray: 5 5;
}

.slider-response-line {
  fill: none;
  stroke: #172033;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
  opacity: 0.72;
}

.slider-response-dot {
  fill: var(--primary);
  stroke: #ffffff;
  stroke-width: 2;
}

.slider-axis-label,
.slider-average-label {
  fill: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.slider-axis-label.end {
  text-anchor: end;
}

.slider-average-label {
  text-anchor: middle;
  fill: var(--primary);
}

.slider-quintile-chart {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
  min-height: 220px;
  align-items: end;
}

.slider-quintile-column {
  min-width: 0;
  display: grid;
  gap: 7px;
  text-align: center;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
}

.slider-quintile-bar-shell {
  height: 160px;
  border-radius: 14px;
  background: linear-gradient(to top, #eef2ff, #e7f8ff 25%, #edfdf3 50%, #fff7ed 75%, #fef2f2);
  border: 1px solid #d7e0fa;
  display: flex;
  align-items: end;
  overflow: hidden;
}

.slider-quintile-bar {
  width: 100%;
  min-height: 4px;
  background: var(--primary);
  color: #ffffff;
  display: flex;
  align-items: start;
  justify-content: center;
  padding-top: 6px;
  font-size: 0.78rem;
}

.slider-quintile-column strong,
.slider-quintile-column small {
  overflow-wrap: anywhere;
}

.confidence-slider-track {
  position: relative;
  height: 18px;
  border-radius: 999px;
  background: var(--neutral-bg);
  border: 1px solid #d7e0fa;
}

.confidence-slider-average {
  position: absolute;
  top: 50%;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--primary);
  transform: translate(-50%, -50%);
  box-shadow: 0 0 0 4px rgba(54, 88, 216, 0.18);
}

.confidence-slider-labels,
.slider-preview-scale {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 8px;
  color: var(--muted);
  font-weight: 700;
}

.confidence-slider-stages {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 12px;
}

.confidence-slider-stages span {
  min-width: 28px;
  border-radius: 999px;
  padding: 4px 7px;
  background: #f7f9fe;
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.82rem;
  text-align: center;
}

.student-slider-response {
  display: grid;
  gap: 12px;
  margin-bottom: 16px;
}

.student-slider-response output {
  justify-self: center;
  border-radius: 999px;
  padding: 8px 14px;
  color: var(--primary-dark);
  background: var(--neutral-bg);
  font-size: 1.3rem;
  font-weight: 900;
}

/* Student response app */
.dev-checkbox {
  margin-top: 14px !important;
  padding: 12px;
  border: 1px dashed #cbd5e1;
  border-radius: 14px;
  background: #fbfdff;
}

.student-poll-card .status-panel {
  margin-bottom: 14px;
}


.student-activity-list {
  display: grid;
  gap: 18px;
  justify-items: center;
}

.student-activity-list > * {
  width: 100%;
}

.student-activity-list > .student-poll-card {
  width: min(100%, 760px);
  min-width: min(100%, 30vw);
}

.student-options {
  display: grid;
  gap: 10px;
  margin: 18px 0;
}

.student-option {
  display: flex !important;
  align-items: center;
  gap: 12px;
  margin-bottom: 0 !important;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #fff;
  cursor: pointer;
}

.student-option:hover {
  background: #f7f9fe;
}

.student-option input {
  margin: 0;
}

#studentNumber,
#studentName,
#studentSessionId,
.student-poll-card textarea,
.student-poll-card input[type="text"],
.student-poll-card input[type="range"] {
  width: 100%;
}

#studentNumber,
#studentName,
#studentSessionId,
.student-poll-card textarea {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 13px;
  font: inherit;
  background: #ffffff;
  color: var(--ink);
  margin-top: 8px;
}

.student-poll-card textarea {
  min-height: 132px;
  resize: vertical;
}

.student-poll-card label {
  display: block;
  font-weight: 800;
}

#studentNumber:focus,
#studentName:focus,
#studentSessionId:focus,
.student-poll-card textarea:focus {
  outline: 3px solid rgba(36, 87, 214, 0.16);
  border-color: var(--primary);
}

.student-slider-response input[type="range"] {
  accent-color: var(--primary);
  cursor: pointer;
}

/* Dev chooser */

.devchooser-shell {
  max-width: 1180px;
}

.dev-current-student .status-panel strong {
  display: inline-block;
  margin: 0 6px 0 4px;
}

.dev-roster-list {
  display: grid;
  gap: 8px;
  max-height: 340px;
  overflow: auto;
  padding-right: 4px;
}

.dev-roster-row {
  width: 100%;
  display: grid;
  grid-template-columns: minmax(110px, 150px) minmax(0, 1fr) minmax(90px, 160px);
  gap: 10px;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 10px 12px;
  background: #ffffff;
  color: var(--ink);
  text-align: left;
  cursor: pointer;
}

.dev-roster-row.current {
  border-color: var(--primary);
  background: var(--neutral-bg);
}

.dev-roster-row.done {
  background: var(--success-bg);
  color: var(--success);
}

.dev-roster-row small {
  color: var(--muted);
  overflow-wrap: anywhere;
}

@media (max-width: 720px) {
  .dev-roster-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .activity-tile-header,
  .live-poll-header,
  .live-card-actions,
  .result-label {
    flex-direction: column;
    align-items: stretch;
  }

  .live-card-actions {
    justify-content: flex-start;
  }
}

/* Activity library management */
.library-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.library-tabs {
  display: flex;
  gap: 8px;
}

.library-bulk-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 18px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #f7f9fe;
}

.library-select-all {
  display: flex !important;
  align-items: center;
  gap: 8px;
  margin: 0 !important;
  font-weight: 600;
}

.library-select-all input {
  margin: 0;
}

.library-bulk-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.library-help {
  margin-top: 12px;
}

.activity-category {
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #ffffff;
  overflow: hidden;
}

.activity-category-header {
  width: 100%;
  border: 0;
  background: #f7f9fe;
  color: var(--ink);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  padding: 14px 16px;
  text-align: left;
  cursor: pointer;
}

.activity-category-header strong {
  display: block;
  font-size: 1rem;
}

.activity-category-header small {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-weight: 500;
}

.activity-category-body {
  display: grid;
  gap: 14px;
  padding: 14px;
}

.activity-category-list {
  display: grid;
  gap: 10px;
}

.saved-poll-list {
  display: grid;
  gap: 12px;
}

.library-poll-card {
  display: grid;
  grid-template-columns: auto auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  margin-top: 0;
}

.library-poll-card.dragging {
  opacity: 0.55;
}

.library-poll-card.drag-over {
  border-color: var(--primary);
  background: #eef4ff;
}

.library-poll-card.is-trash {
  background: #fffafa;
}

.library-card-select input {
  width: 18px;
  height: 18px;
}

.drag-handle,
.icon-button {
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #ffffff;
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
}

.drag-handle {
  padding: 8px 10px;
  color: var(--muted);
  cursor: grab;
}

.drag-handle:active {
  cursor: grabbing;
}

.icon-button {
  padding: 9px 10px;
}

.icon-button:hover,
.drag-handle:hover {
  background: #f1f5ff;
}

.button.danger,
.icon-button.danger {
  color: #b42318;
  border-color: #ffd0ca;
}

.button.danger:hover,
.icon-button.danger:hover {
  background: #fff1f0;
}

.library-card-main {
  min-width: 0;
}

.library-card-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

@media (max-width: 720px) {
  .library-poll-card {
    grid-template-columns: auto minmax(0, 1fr) auto;
  }

  .drag-handle {
    display: none;
  }

  .library-bulk-bar,
  .library-toolbar {
    align-items: stretch;
  }

  .library-tabs,
  .library-bulk-actions {
    width: 100%;
  }
}

/* Session Details */

.session-details-panel,
.session-timeline-panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 24px;
  box-shadow: 0 12px 34px rgba(23, 32, 51, 0.05);
  margin-top: 18px;
}

.timeline-panel-header {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: flex-start;
  margin-bottom: 18px;
}

.timeline-panel-header h3 {
  margin-bottom: 4px;
}

.slides-connect-launcher {
  display: grid;
  gap: 14px;
}

.slides-connect-button {
  min-height: 48px;
}

.slides-connect-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 5px;
  background: #fbbc04;
  box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.45);
  position: relative;
}

.slides-connect-icon::before {
  content: "";
  position: absolute;
  right: 3px;
  top: 3px;
  width: 6px;
  height: 6px;
  background: rgba(255, 255, 255, 0.7);
  clip-path: polygon(0 0, 100% 0, 100% 100%);
}

.slides-connect-icon span {
  width: 11px;
  height: 8px;
  border: 2px solid #ffffff;
  border-radius: 2px;
  display: block;
}

.slides-export-panel {
  display: grid;
  gap: 14px;
  margin: 18px 0 0;
}

.slides-export-panel.is-collapsed > label,
.slides-export-panel.is-collapsed > .button-row {
  display: none;
}

.slides-export-panel label {
  display: grid;
  gap: 6px;
  font-size: 12px;
  font-weight: 700;
}

.slides-export-panel input,
.slides-export-panel select {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 9px 10px;
  font: inherit;
}

.slides-picker-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
  align-items: center;
}

.slides-export-header {
  width: 100%;
  border: 0;
  padding: 0;
  background: transparent;
  color: inherit;
  text-align: left;
  cursor: pointer;
  display: grid;
  gap: 4px;
}

.slides-export-header strong {
  display: block;
}

.slides-export-panel .button-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  margin: 0;
}

.slides-export-panel .slides-export-actions {
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.9fr) minmax(0, 0.9fr);
}

.slides-export-panel .slides-folder-actions {
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
}

.slides-export-panel button.danger {
  border: 1px solid var(--border);
  background: #ffffff;
  color: var(--muted);
}

.slides-chooser-panel {
  display: grid;
  gap: 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px;
  background: #f8fafc;
}

.slides-chooser-header,
.slides-chooser-search {
  display: grid;
  gap: 8px;
}

.slides-chooser-header {
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: flex-start;
}

.slides-chooser-header strong,
.slides-chooser-header small {
  display: block;
}

.slides-chooser-search {
  grid-template-columns: minmax(0, 1fr) auto;
}

.slides-chooser-results {
  display: grid;
  gap: 8px;
  max-height: 260px;
  overflow: auto;
}

.slides-chooser-browser-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
  padding: 8px 0;
}

.slides-chooser-browser-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.slides-chooser-breadcrumb {
  display: flex;
  gap: 6px;
  align-items: center;
  flex-wrap: wrap;
  color: var(--ink);
  font-size: 0.85rem;
  font-weight: 800;
}

.slides-chooser-result {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px;
  background: #ffffff;
}

.slides-chooser-result strong,
.slides-chooser-result small {
  display: block;
}

.slides-chooser-result small {
  margin-top: 2px;
}

@media (max-width: 720px) {
  .slides-export-panel .slides-export-actions,
  .slides-export-panel .slides-folder-actions,
  .slides-picker-row,
  .slides-chooser-header,
  .slides-chooser-search,
  .slides-chooser-browser-header,
  .slides-chooser-result {
    grid-template-columns: 1fr;
  }

  .slides-chooser-browser-actions {
    justify-content: stretch;
  }

  .slides-chooser-browser-actions button {
    flex: 1;
  }
}

.pulse-slide-export-canvas {
  position: absolute;
  left: 0;
  top: 0;
  width: 960px;
  height: 540px;
  pointer-events: none;
  background: #ffffff;
}

.slide-export-preview-shell {
  position: absolute;
  left: -1200px;
  top: 0;
  width: 960px;
  height: 540px;
  overflow: visible;
  pointer-events: none;
  transform: none;
  transform-origin: top left;
  z-index: -1;
}

.slide-export-preview-shell .poll-card {
  width: 960px;
  height: 540px;
  padding: 46px 56px;
  position: relative;
  color: var(--ink);
  background: #ffffff;
  font-family: Arial, Helvetica, sans-serif;
}

.slide-export-preview-shell .brand-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
}

.slide-export-preview-shell .brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--primary);
  font-size: 18px;
  font-weight: 800;
}

.slide-export-preview-shell .brand-mark {
  width: 24px;
  height: 24px;
  display: inline-block;
  border-radius: 7px;
  background: var(--primary);
}

.slide-export-preview-shell .session-meta {
  color: var(--muted);
  font-size: 15px;
  font-weight: 700;
}

.slide-export-preview-shell .poll-type {
  margin-bottom: 10px;
  color: var(--primary);
  font-size: 17px;
  font-weight: 800;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.slide-export-preview-shell .question {
  max-width: 820px;
  margin: 0 0 26px;
  color: var(--ink);
  font-size: 32px;
  line-height: 1.18;
  font-weight: 800;
}

.slide-export-preview-shell .options {
  display: grid;
  gap: 14px;
}

.slide-export-preview-shell .option-row {
  display: grid;
  grid-template-columns: 300px 1fr 80px;
  align-items: center;
  gap: 18px;
}

.slide-export-preview-shell .option-label {
  min-width: 0;
  overflow: hidden;
  color: var(--ink);
  font-size: 19px;
  line-height: 1.25;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.slide-export-preview-shell .bar-track {
  height: 30px;
  overflow: hidden;
  border-radius: 999px;
  background: #e8edff;
}

.slide-export-preview-shell .bar-fill {
  height: 100%;
  border-radius: 999px;
  background: var(--primary);
}

.slide-export-preview-shell .text-response-track {
  display: flex;
  align-items: center;
  padding: 0 14px;
  color: var(--ink);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.2;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.slide-export-preview-shell .option-value {
  color: var(--ink);
  font-size: 19px;
  font-weight: 800;
  text-align: right;
}

.slide-export-preview-shell .footer {
  position: absolute;
  right: 56px;
  bottom: 34px;
  left: 56px;
  display: flex;
  gap: 20px;
  justify-content: space-between;
  border-top: 1px solid var(--border);
  padding-top: 16px;
  color: var(--muted);
  font-size: 16px;
  font-weight: 700;
}

.session-timeline {
  display: grid;
  gap: 0;
}

.timeline-empty {
  color: var(--muted);
  border: 1px dashed var(--border);
  border-radius: 16px;
  padding: 18px;
  background: #fafcff;
}

.timeline-event {
  display: grid;
  grid-template-columns: 68px 20px minmax(0, 1fr);
  gap: 12px;
  position: relative;
  padding: 0 0 20px;
}

.timeline-event:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 77px;
  top: 24px;
  bottom: 0;
  width: 2px;
  background: #dce5f7;
}

.timeline-time {
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 700;
  padding-top: 2px;
  text-align: right;
}

.timeline-dot {
  width: 14px;
  height: 14px;
  margin-top: 4px;
  border-radius: 999px;
  background: var(--primary);
  border: 3px solid #eaf0ff;
  z-index: 1;
}

.timeline-event-session_started .timeline-dot,
.timeline-event-session_ended .timeline-dot {
  background: var(--ink);
}

.timeline-body {
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 14px 16px;
  background: #fbfdff;
}

.timeline-body h4 {
  margin: 0 0 6px;
  font-size: 0.98rem;
}

.timeline-body h4 a {
  color: inherit;
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.timeline-body h4 a:hover {
  color: var(--primary);
}

.timeline-body p {
  margin: 0;
  color: var(--muted);
  line-height: 1.45;
}

.timeline-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.timeline-metrics span {
  background: #f7f9fe;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.82rem;
  padding: 5px 9px;
}

.timeline-slide-export-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-top: 10px;
  font-size: 0.82rem;
}

.timeline-slide-export-links span {
  color: var(--muted);
}

.activity-stack,
.activity-stack-items,
.live-activity-stack {
  width: 100%;
  display: grid;
  gap: 18px;
}

.activity-stack {
  align-items: start;
}

@media (max-width: 720px) {
  .timeline-event {
    grid-template-columns: 54px 18px minmax(0, 1fr);
    gap: 10px;
  }

  .timeline-event:not(:last-child)::after {
    left: 63px;
  }

  .timeline-time {
    font-size: 0.78rem;
  }
}


/* Timeline browser page */

.timeline-page-shell {
  display: grid;
  gap: 18px;
}

.timeline-page-header,
.timeline-browser-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 18px;
}

.timeline-summary-cards {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
}

.timeline-summary-card {
  min-width: 96px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: #f7f9fe;
  text-align: center;
}

.timeline-summary-card strong {
  display: block;
  font-size: 1.25rem;
  color: var(--ink);
}

.timeline-summary-card span {
  display: block;
  color: var(--muted);
  font-size: 0.82rem;
  margin-top: 2px;
}

.timeline-session-list {
  display: grid;
  gap: 10px;
}

.timeline-session-item {
  width: 100%;
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: center;
  text-align: left;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: #ffffff;
  color: var(--ink);
  cursor: pointer;
}

.timeline-session-item:hover,
.timeline-session-item.selected {
  border-color: var(--primary);
  background: #f3f6ff;
}

.timeline-session-item strong {
  display: block;
}

.timeline-session-item small {
  display: block;
  color: var(--muted);
  margin-top: 3px;
}

.timeline-session-item em {
  color: var(--muted);
  font-style: normal;
  font-size: 0.85rem;
  white-space: nowrap;
}

.timeline-page-panel {
  margin-top: 0;
}

@media (max-width: 720px) {
  .timeline-page-header,
  .timeline-browser-header,
  .timeline-session-item {
    flex-direction: column;
    align-items: stretch;
  }

  .timeline-summary-cards {
    justify-content: flex-start;
  }
}

.timeline-browser-controls {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.compact-label {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-weight: 700;
}

.compact-label select {
  min-width: 110px;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 8px 10px;
  background: #ffffff;
  color: var(--ink);
  font: inherit;
}

@media (max-width: 720px) {
  .timeline-browser-controls {
    justify-content: flex-start;
  }

  .compact-label {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }
}

/* Session Analytics is now an activity tile inside Session Details. */
.session-analytics-content,
.session-analytics-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  margin-top: 14px;
}

.session-analytics-metric {
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #fbfdff;
  padding: 12px 14px;
}

.session-analytics-metric strong {
  display: block;
  color: var(--ink);
  font-size: 1.25rem;
  line-height: 1.1;
}

.session-analytics-metric span {
  color: var(--muted);
  display: block;
  font-size: 0.85rem;
  margin-top: 4px;
}

@media (max-width: 520px) {
  .session-analytics-content,
.session-analytics-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }

  .session-analytics-metric {
    padding: 10px 12px;
  }
}


/* Mobile-first staged student workspace */
.student-workspace-shell,
.student-dashboard-workspace {
  max-width: 760px;
}

.student-stage-card label {
  display: block;
  font-weight: 800;
  margin-bottom: 18px;
}

.student-stage-card .primary {
  min-height: 52px;
  font-size: 1.05rem;
}

.student-activity-stage {
  min-height: calc(100dvh - 108px);
}

.student-settings-dialog {
  width: min(92vw, 520px);
  border: 0;
  border-radius: 20px;
  padding: 0;
  box-shadow: 0 24px 80px rgba(23, 32, 51, 0.28);
}

.student-settings-dialog::backdrop {
  background: rgba(12, 18, 31, 0.5);
}

.student-settings-dialog-card {
  padding: 22px;
}

.student-settings-dialog-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
}

.student-settings-dialog-header h2 {
  margin: 0;
}

.student-settings-actions {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}

@media (max-width: 720px) {
  .student-workspace-page .live-header,
  body:has(.student-dashboard-workspace) .app-header {
    flex-direction: row;
    align-items: center;
    padding: 8px 12px;
    position: sticky;
    top: 0;
    z-index: 30;
  }

  .student-workspace-page .brand-link,
  body:has(.student-dashboard-workspace) .brand-link {
    min-width: 0;
  }

  .student-workspace-page .brand-link::before,
  body:has(.student-dashboard-workspace) .brand-link::before {
    width: 34px;
    height: 34px;
  }

  .student-workspace-page .header-actions,
  body:has(.student-dashboard-workspace) .header-actions {
    flex-wrap: nowrap;
    gap: 4px;
  }

  .student-workspace-page .header-actions .button,
  body:has(.student-dashboard-workspace) .header-actions .button {
    min-height: 40px;
    padding: 8px 10px;
    font-size: 0.78rem;
  }

  body:has(.student-dashboard-workspace) #sessionSettingsButton {
    display: inline-flex;
  }

  .student-workspace-shell,
  body:has(.student-dashboard-workspace) .page-shell {
    width: 100%;
    margin: 0;
    padding: 12px;
    padding-bottom: calc(16px + env(safe-area-inset-bottom));
  }

  .student-stage-card {
    margin: 0;
    padding: 20px;
    border-radius: 18px;
  }

  body[data-student-stage="activities"] .student-workspace-shell,
  body:has(.student-dashboard-workspace)[data-student-stage="activities"] .page-shell {
    padding: 8px;
  }

  .student-activity-stage {
    min-height: calc(100dvh - 74px - env(safe-area-inset-bottom));
  }

  .student-activity-list {
    gap: 10px;
  }

  .student-activity-list > .student-poll-card {
    width: 100%;
    border-radius: 16px;
    padding: 18px;
    box-shadow: none;
  }

  .student-option {
    min-height: 54px;
    padding: 15px;
  }

  #studentNumber,
  #studentName,
  #studentSessionId {
    min-height: 52px;
    font-size: 1.08rem;
  }
}

/* Compact live-session header */
.live-header-toggle {
  white-space: nowrap;
}

.live-header.is-collapsed {
  --header-block-size: 54px;
  min-height: 54px;
  padding-top: 6px;
  padding-bottom: 6px;
}

.live-header.is-collapsed .brand-link {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.live-header.is-collapsed .brand-link h1,
.live-header.is-collapsed .session-subtitle,
.live-header.is-collapsed .session-join-qr-panel {
  display: none !important;
}

.live-header.is-collapsed .session-code-badge {
  margin: 0;
  font-size: clamp(1.45rem, 3vw, 2rem);
  letter-spacing: 0.06em;
}

/* A collapsed QR Attendance card is a single title control. */
.lecture-qr-card-title-only {
  padding: 0 !important;
  overflow: hidden;
}

.lecture-qr-collapsed-title {
  width: 100%;
  min-height: 52px;
  border: 0;
  border-radius: inherit;
  background: transparent;
  color: inherit;
  padding: 14px 18px;
  text-align: left;
  font: inherit;
  font-size: 1.05rem;
  font-weight: 800;
  cursor: pointer;
}

.lecture-qr-collapsed-title:hover,
.lecture-qr-collapsed-title:focus-visible {
  background: var(--surface-soft, rgba(23, 32, 51, 0.04));
}

@media (max-width: 720px) {
  .live-header.is-collapsed {
    flex-direction: row;
    align-items: center;
    padding: 7px 10px;
    gap: 8px;
  }

  .live-header.is-collapsed .brand-link {
    flex: 1 1 auto;
  }

  .live-header.is-collapsed .header-buttons {
    width: auto;
    flex: 0 0 auto;
    display: flex;
    gap: 6px;
  }

  .live-header.is-collapsed .header-buttons .button,
  .live-header.is-collapsed .header-buttons button {
    min-height: 36px;
    padding: 7px 10px;
    font-size: 0.78rem;
  }

  .live-header.is-collapsed .header-buttons .button:first-child {
    display: none;
  }
}

/* Stage 2: course and module catalog */
.catalog-workspace {
  align-items: start;
}

.eyebrow {
  margin: 0 0 5px;
  color: var(--primary);
  font-size: 0.76rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

.catalog-create-form {
  align-items: start;
}

.catalog-checkbox {
  align-self: end;
  min-height: 48px;
  padding: 11px 12px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fff;
}

.catalog-checkbox input {
  width: auto;
  flex: 0 0 auto;
}

.catalog-card-list {
  display: grid;
  gap: 16px;
}

.catalog-course-card,
.catalog-assignment-card,
.catalog-module-card {
  min-width: 0;
}

.catalog-module-card,
.catalog-assignment-card {
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: #fff;
}

.catalog-module-card {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}

.catalog-module-card h3,
.catalog-assignment-card h3,
.catalog-course-card h3 {
  margin: 0;
}

.catalog-card-heading,
.section-heading-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}

.catalog-badge,
.catalog-chip {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  border-radius: 999px;
  background: #eef2ff;
  color: #3730a3;
  padding: 6px 10px;
  font-size: 0.78rem;
  font-weight: 800;
  white-space: nowrap;
}

.catalog-badge.success,
.catalog-chip.success {
  background: #ecfdf5;
  color: #047857;
}

.catalog-badge.neutral,
.catalog-chip.neutral {
  background: var(--neutral-bg);
  color: var(--muted);
}

.catalog-slot-list {
  display: grid;
  gap: 9px;
  margin: 18px 0;
}

.catalog-slot-row {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #fbfdff;
}

.catalog-slot-row p,
.catalog-module-card p,
.catalog-assignment-card p {
  margin-top: 4px;
  margin-bottom: 0;
}

.catalog-sequence {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-weight: 900;
}

.catalog-inline-editor {
  margin-top: 14px;
  border-top: 1px solid var(--border);
  padding-top: 14px;
}

.catalog-inline-editor summary {
  color: var(--primary);
  cursor: pointer;
  font-weight: 800;
}

.compact-settings-grid {
  margin-top: 14px;
}

.catalog-form-actions {
  grid-column: 1 / -1;
}

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

.catalog-link-existing label {
  display: grid;
  gap: 7px;
  font-weight: 700;
}

.catalog-link-existing select {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 11px 12px;
  background: #fff;
  color: var(--ink);
  font: inherit;
}

.catalog-assignment-actions {
  margin-top: 14px;
}

.catalog-stage-note {
  border-style: dashed;
}

@media (max-width: 720px) {
  .catalog-card-heading,
  .section-heading-row,
  .catalog-module-card {
    flex-direction: column;
    align-items: stretch;
  }

  .catalog-slot-row {
    grid-template-columns: 34px minmax(0, 1fr);
  }

  .catalog-slot-row .catalog-badge {
    grid-column: 2;
  }

  .catalog-link-existing {
    grid-template-columns: 1fr;
  }

  .settings-grid-wide,
  .catalog-form-actions {
    grid-column: auto;
  }
}

/* Sysdev AI Prompt Engineer */
.prompt-engineer-dashboard-card {
  border-color: rgba(36, 87, 214, 0.34);
  background: linear-gradient(145deg, #ffffff, #f2f6ff);
}

.prompt-engineer-shell {
  width: min(1480px, calc(100% - 32px));
  margin: 28px auto 56px;
}

.prompt-engineer-intro {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 18px;
}

.prompt-engineer-intro h1 {
  margin: 4px 0 8px;
}

.prompt-environment-badge {
  flex: 0 0 auto;
  padding: 9px 13px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--neutral-bg);
  color: var(--primary-dark);
  font-size: 0.82rem;
  font-weight: 800;
}

.prompt-type-tabs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 12px 2px 18px;
}

.prompt-type-tab {
  flex: 0 0 auto;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 10px 16px;
  background: var(--card);
  color: var(--ink);
  font: inherit;
  font-weight: 750;
  cursor: pointer;
}

.prompt-type-tab:hover,
.prompt-type-tab.active {
  border-color: var(--primary);
  background: var(--primary);
  color: #ffffff;
}

.prompt-type-tab.planned {
  opacity: 0.58;
  cursor: not-allowed;
}

.prompt-engineer-workspace {
  display: grid;
  grid-template-columns: minmax(260px, 320px) minmax(0, 1fr);
  gap: 20px;
  align-items: start;
}

.prompt-engineer-sidebar {
  display: grid;
  gap: 18px;
  position: sticky;
  top: 18px;
  max-height: calc(100vh - 36px);
  overflow-y: auto;
  padding-right: 2px;
}

.prompt-version-card h2 {
  margin: 4px 0 8px;
}

.prompt-version-summary {
  display: grid;
  gap: 7px;
  margin: 18px 0;
}

.prompt-version-summary div,
.prompt-statistics dl div,
.prompt-input-card dl div {
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

.prompt-version-summary dt,
.prompt-statistics dt,
.prompt-input-card dt {
  color: var(--muted);
}

.prompt-version-summary dd,
.prompt-statistics dd,
.prompt-input-card dd {
  margin: 0;
  text-align: right;
  font-weight: 700;
}

.prompt-sidebar-actions {
  display: grid;
  gap: 8px;
  margin-top: 14px;
}

.prompt-sidebar-actions .button,
.prompt-import-button {
  width: 100%;
  justify-content: center;
  text-align: center;
}

.prompt-version-history {
  display: grid;
  gap: 8px;
}

.prompt-version-item {
  display: grid;
  gap: 2px;
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #ffffff;
  color: var(--ink);
  text-align: left;
  cursor: pointer;
}

.prompt-version-item.active {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(36, 87, 214, 0.12);
}

.prompt-version-item span {
  font-weight: 800;
}

.prompt-version-item small {
  color: var(--muted);
}

.prompt-engineer-main {
  display: grid;
  gap: 14px;
  min-width: 0;
}

.prompt-panel {
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--card);
  box-shadow: 0 8px 24px rgba(23, 32, 51, 0.04);
  overflow: hidden;
}

.prompt-panel > summary {
  padding: 18px 22px;
  cursor: pointer;
  font-weight: 850;
  font-size: 1.06rem;
  background: #fbfcff;
}

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

.prompt-panel-body {
  padding: 22px;
}

.prompt-field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.prompt-field-grid label,
.prompt-version-card label,
.prompt-input-card label {
  display: grid;
  gap: 7px;
  font-weight: 700;
}

.prompt-field-grid input,
.prompt-field-grid select,
.prompt-field-grid textarea,
.prompt-version-card input,
.prompt-version-card select,
.prompt-version-card textarea,
.prompt-input-card input {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  background: #ffffff;
  color: var(--ink);
  font: inherit;
}

.prompt-code-textarea,
.prompt-result-card pre,
.prompt-log-item pre {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.84rem;
  line-height: 1.5;
}

.field-help {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 500;
}

.prompt-input-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.prompt-input-card {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
  background: #fbfcff;
}

.prompt-input-card p {
  color: var(--muted);
  line-height: 1.45;
}

.prompt-input-card dl {
  display: grid;
  gap: 5px;
  margin: 12px 0;
  font-size: 0.82rem;
}

.prompt-input-toggle {
  font-size: 1rem;
}

.prompt-variable-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.prompt-variable-chip {
  border: 1px solid #cbd7f6;
  border-radius: 999px;
  padding: 7px 10px;
  background: #eef3ff;
  color: var(--primary-dark);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  cursor: pointer;
}

.prompt-test-actions {
  margin: 18px 0;
}

.prompt-results-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.prompt-result-card {
  min-width: 0;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
  background: #fbfcff;
}

.prompt-result-card h3 {
  margin-top: 0;
}

.prompt-result-card pre,
.prompt-log-item pre {
  max-height: 420px;
  overflow: auto;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  margin: 0;
  padding: 12px;
  border-radius: 10px;
  background: #111827;
  color: #eef2ff;
}

.prompt-statistics dl {
  display: grid;
  gap: 9px;
  margin: 0;
}

.prompt-comparison-output {
  max-height: 360px;
  overflow: auto;
  margin-bottom: 22px;
}

.prompt-comparison-output li {
  margin-bottom: 7px;
}

.prompt-test-log-list {
  display: grid;
  gap: 9px;
}

.prompt-log-item {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 12px;
  background: #fbfcff;
}

.prompt-log-item summary {
  cursor: pointer;
  font-weight: 750;
}

.prompt-log-item pre {
  margin-top: 10px;
}

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

  .prompt-engineer-sidebar {
    position: static;
    max-height: none;
  }
}

@media (max-width: 720px) {
  .prompt-engineer-intro,
  .prompt-field-grid,
  .prompt-input-list,
  .prompt-results-grid {
    grid-template-columns: 1fr;
    display: grid;
  }

  .prompt-engineer-intro {
    align-items: stretch;
  }

  .prompt-environment-badge {
    width: fit-content;
  }
}

/* Confidence slider: quintile percentage distribution */
.slider-chart-header > div {
  display: grid;
  gap: 3px;
}

.slider-chart-subtitle {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
}

.slider-distribution-chart {
  display: block;
  width: 100%;
  height: auto;
  min-height: 250px;
  overflow: visible;
}

.slider-grid-line {
  stroke: #dbe3ef;
  stroke-width: 1;
}

.slider-y-axis-label,
.slider-y-axis-title,
.slider-bin-label,
.slider-bin-count,
.slider-bar-value {
  font-family: inherit;
}

.slider-y-axis-label {
  fill: var(--muted);
  font-size: 12px;
  text-anchor: end;
}

.slider-y-axis-title {
  fill: var(--muted);
  font-size: 12px;
  font-weight: 700;
  text-anchor: middle;
}

.slider-distribution-bar {
  opacity: 0.78;
}

.slider-distribution-line {
  fill: none;
  stroke: #172033;
  stroke-width: 4;
  stroke-linecap: round;
  stroke-linejoin: round;
  filter: drop-shadow(0 2px 2px rgba(23, 32, 51, 0.16));
}

.slider-distribution-point {
  fill: #ffffff;
  stroke: #172033;
  stroke-width: 3;
}

.slider-bar-value {
  fill: #172033;
  font-size: 13px;
  font-weight: 800;
  text-anchor: middle;
}

.slider-bin-label {
  fill: var(--ink);
  font-size: 12px;
  font-weight: 800;
  text-anchor: middle;
}

.slider-bin-count {
  fill: var(--muted);
  font-size: 11px;
  font-weight: 600;
  text-anchor: middle;
}

@media (max-width: 680px) {
  .slider-distribution-chart {
    min-width: 560px;
  }

  .slider-distribution-card {
    overflow-x: auto;
  }
}