/* SchoolHubNG CBT — brand: muted sage green + slate (matches logo) */
:root {
  --brand-green: #5c9282;
  --brand-green-hover: #4a7a6c;
  --brand-green-muted: #e8f1ee;
  --slate: #2d3d44;
  --slate-soft: #3d525c;
  --bg: #f4f7f6;
  --surface: #ffffff;
  --text: var(--slate);
  --muted: #5c6b73;
  --border: #d8e0dd;
  --border-strong: #b8c9c2;
  --accent: var(--brand-green);
  --danger: #b91c1c;
  --danger-bg: #fef2f2;
  --ok: #0d9488;
  --ok-bg: #ecfdf5;
  --info-bg: #eff6ff;
  --shadow-sm: 0 1px 2px rgba(45, 61, 68, 0.06);
  --radius: 10px;
  --space-xs: 0.35rem;
  --space-sm: 0.75rem;
  --space-md: 1.25rem;
  --space-lg: 1.75rem;
  --space-xl: 2.5rem;
  --header-h: 4.25rem;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  font-size: 1rem;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0.5rem;
  z-index: 100;
  padding: var(--space-sm) var(--space-md);
  background: var(--brand-green);
  color: #fff;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 600;
}

.skip-link:focus {
  left: 0.5rem;
  outline: 2px solid var(--slate);
  outline-offset: 2px;
}

/* —— Header —— */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.site-header__inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  min-height: var(--header-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  color: var(--slate);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand:hover {
  color: var(--brand-green-hover);
}

.brand__logo {
  position: absolute;
  display: block;
  height: 11rem;
  width: auto;
  max-width: min(200px, 55vw);
  object-fit: contain;
}

.brand__suffix {
  font-size: 1.05rem;
  margin-left:8rem;
  color: var(--brand-green);
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
  background: var(--brand-green-muted);
  line-height: 1.2;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-xs) var(--space-md);
}

.site-nav a {
  color: var(--slate-soft);
  text-decoration: none;
  font-weight: 500;
  padding: 0.4rem 0.2rem;
  border-radius: 6px;
}

.site-nav a:hover {
  color: var(--brand-green);
}

.site-nav a:focus-visible {
  outline: 2px solid var(--brand-green);
  outline-offset: 2px;
}

/* —— Main —— */
.container {
  flex: 1;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: clamp(1.25rem, 4vw, 2rem) clamp(1rem, 4vw, 1.75rem) clamp(2rem, 5vw, 3rem);
}

.container > h1:first-child {
  margin-top: 0;
}

h1 {
  font-size: clamp(1.5rem, 4vw, 1.85rem);
  font-weight: 700;
  color: var(--slate);
  margin: 0 0 var(--space-md);
  letter-spacing: -0.02em;
}

h2 {
  font-size: 1.2rem;
  margin: 0 0 var(--space-sm);
  color: var(--slate);
}

/* —— Footer —— */
.site-footer {
  margin-top: auto;
  padding: var(--space-lg) clamp(1rem, 4vw, 1.75rem);
  border-top: 1px solid var(--border);
  background: var(--surface);
}

.site-footer__text {
  margin: 0;
  text-align: center;
  font-size: 0.875rem;
  color: var(--muted);
}

/* —— Flashes —— */
.flashes {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-lg);
}

.flash {
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius);
  margin-bottom: var(--space-sm);
  border: 1px solid transparent;
}

.flash-success {
  background: var(--ok-bg);
  color: #065f46;
  border-color: #a7f3d0;
}

.flash-danger {
  background: var(--danger-bg);
  color: var(--danger);
  border-color: #fecaca;
}

.flash-info,
.flash-message {
  background: var(--info-bg);
  color: #1e40af;
  border-color: #bfdbfe;
}

.flash-warning {
  background: #fffbeb;
  color: #92400e;
  border-color: #fcd34d;
  word-break: break-word;
}

/* —— Cards —— */
.card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: clamp(1.1rem, 3vw, 1.5rem);
  margin-bottom: var(--space-md);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

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

.card > p:last-child,
.card > ul:last-child {
  margin-bottom: 0;
}

/* —— Forms —— */
form.card > div {
  margin-bottom: var(--space-md);
}

form.card > div:last-of-type {
  margin-bottom: var(--space-sm);
}

label {
  display: block;
  margin-bottom: var(--space-xs);
  color: var(--slate-soft);
  font-size: 0.9rem;
  font-weight: 500;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
input[type="time"],
input[type="datetime-local"],
textarea,
select {
  width: 100%;
  max-width: 36rem;
  padding: 0.55rem 0.85rem;
  border-radius: 8px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--text);
  font-size: 1rem;
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--brand-green);
  box-shadow: 0 0 0 3px var(--brand-green-muted);
}

input[type="checkbox"] {
  width: auto;
  margin-right: 0.35rem;
  accent-color: var(--brand-green);
}

/* Buttons: native <button>, links .btn, and WTForms <input type="submit"> */
button,
input[type="submit"],
input[type="button"],
input[type="reset"],
.btn {
  display: inline-block;
  width: auto;
  max-width: none;
  margin-top: var(--space-sm);
  margin-right: 0.5rem;
  margin-bottom: 0;
  padding: 0.55rem 1.15rem;
  border-radius: 8px;
  border: 1px solid transparent;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  text-decoration: none;
  font-size: 1rem;
  font-weight: 600;
  font-family: inherit;
  line-height: 1.3;
  text-align: center;
  vertical-align: middle;
  -webkit-appearance: none;
  appearance: none;
  transition: background 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}

button:first-child,
input[type="submit"]:first-child,
input[type="button"]:first-child,
.btn:first-child {
  margin-top: 0;
}

form.card > input[type="submit"],
form.card > button:not([type="button"]) {
  margin-top: var(--space-md);
}

button:hover,
input[type="submit"]:hover,
input[type="button"]:hover,
input[type="reset"]:hover,
.btn:hover {
  background: var(--brand-green-hover);
  color: #fff;
}

button:focus-visible,
input[type="submit"]:focus-visible,
input[type="button"]:focus-visible,
input[type="reset"]:focus-visible,
.btn:focus-visible {
  outline: 2px solid var(--slate);
  outline-offset: 2px;
}

button:active,
input[type="submit"]:active,
input[type="button"]:active,
input[type="reset"]:active,
.btn:active {
  background: var(--brand-green-hover);
  transform: translateY(1px);
}

button:disabled,
input[type="submit"]:disabled,
input[type="button"]:disabled,
input[type="reset"]:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
}

button:disabled:hover,
input[type="submit"]:disabled:hover,
input[type="button"]:disabled:hover,
.btn[aria-disabled="true"]:hover {
  background: var(--accent);
}

button.secondary,
input.secondary[type="submit"],
input.secondary[type="button"],
.btn.secondary {
  background: var(--slate-soft);
  color: #fff;
}

button.secondary:hover,
input.secondary[type="submit"]:hover,
input.secondary[type="button"]:hover,
.btn.secondary:hover {
  background: var(--slate);
  color: #fff;
}

button.secondary:disabled:hover,
input.secondary[type="submit"]:disabled:hover,
.btn.secondary[aria-disabled="true"]:hover {
  background: var(--slate-soft);
}

button{
  margin-bottom:1rem
}

/* Inline POST tools (e.g. Publish / Delete next to copy) */
.card form[style*="inline"] button,
.card form[style*="inline"] input[type="submit"] {
  margin-top: 0;
  margin-bottom: 0.35rem;
}

.take-grid > button,
.take-grid > input[type="submit"],
#start-screen > button,
#exam-screen > button {
  margin-top: var(--space-md);
}

#start-screen > button:first-of-type {
  margin-top: var(--space-sm);
}

/* —— Tables —— */
.table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: var(--space-sm) 0;
}

table {
  width: 100%;
  min-width: 280px;
  border-collapse: collapse;
  font-size: 0.95rem;
}

th,
td {
  text-align: left;
  padding: 0.65rem 0.75rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

th {
  font-weight: 600;
  color: var(--slate-soft);
  background: var(--brand-green-muted);
  white-space: nowrap;
}

tbody tr:hover {
  background: #fafcfb;
}

/* —— Misc —— */
.badge {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.2rem 0.55rem;
  border-radius: 6px;
  background: var(--border);
  color: var(--slate-soft);
  vertical-align: middle;
}

.badge.practice {
  background: #ede9fe;
  color: #5b21b6;
}

.muted {
  color: var(--muted);
  font-size: 0.95rem;
}

.auth-links {
  margin: var(--space-md) 0 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 0.5rem;
}

.auth-links__sep {
  color: var(--border-strong);
  user-select: none;
}

.text-danger {
  color: var(--danger);
  margin-top: var(--space-xs);
}

a {
  color: var(--brand-green-hover);
}

a:hover {
  color: var(--brand-green);
}

code {
  font-size: 0.88em;
  padding: 0.15rem 0.45rem;
  border-radius: 6px;
  background: var(--brand-green-muted);
  color: var(--slate);
  word-break: break-word;
}

/* —— Take exam / public —— */
.net-banner {
  display: none;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius);
  margin-bottom: var(--space-md);
  border: 1px solid #fcd34d;
  background: #fffbeb;
  color: #92400e;
}

.net-banner.online-hint {
  border-color: var(--brand-green);
  background: var(--brand-green-muted);
  color: var(--slate);
}

.take-grid {
  display: grid;
  gap: var(--space-md);
}

.take-layout {
  display: grid;
  gap: var(--space-md);
  grid-template-columns: 1fr;
}

@media (min-width: 52rem) {
  .take-layout {
    grid-template-columns: minmax(9rem, 12rem) 1fr;
  }
}

.take-main {
  display: grid;
  gap: var(--space-md);
  min-width: 0;
}

.take-toolbar-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
}

.save-status.save-ok {
  color: var(--ok);
}

.save-status.save-pending {
  color: #92400e;
}

.save-status.save-offline {
  color: var(--muted);
}

.palette-panel {
  position: sticky;
  top: calc(var(--header-h) + 0.5rem);
  align-self: start;
  max-height: calc(100vh - var(--header-h) - 2rem);
  overflow-y: auto;
}

.palette-title {
  font-size: 0.95rem;
  margin: 0 0 var(--space-sm);
}

.palette-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(2.4rem, 1fr));
  gap: 0.35rem;
}

.review-palette {
  margin: var(--space-md) 0;
}

.palette-btn {
  margin: 0;
  padding: 0.35rem 0;
  min-width: 2.4rem;
  font-size: 0.85rem;
  border-radius: 6px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--slate);
}

.palette-btn.palette-unanswered {
  background: #fff;
}

.palette-btn.palette-answered {
  background: var(--brand-green-muted);
  border-color: var(--brand-green);
}

.palette-btn.palette-flagged,
.palette-btn.palette-answered-flagged {
  background: #fffbeb;
  border-color: #fcd34d;
}

.palette-btn.palette-current {
  outline: 2px solid var(--brand-green);
  outline-offset: 1px;
}

.q-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-sm);
}

.flag-btn {
  margin: 0;
  padding: 0.35rem 0.75rem;
  font-size: 0.85rem;
  background: var(--surface);
  color: var(--slate-soft);
  border: 1px solid var(--border-strong);
}

.flag-btn.flagged {
  background: #fffbeb;
  border-color: #fcd34d;
  color: #92400e;
}

.paged-nav {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.review-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(45, 61, 68, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
}

.modal-card {
  max-width: 28rem;
  width: 100%;
  margin: 0;
}

.modal-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.modal-actions button {
  margin: 0;
}

.analytics-grid {
  display: grid;
  gap: var(--space-md);
  grid-template-columns: repeat(auto-fill, minmax(10rem, 1fr));
  margin-bottom: var(--space-md);
}

.export-menu {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 var(--space-md);
}

.export-menu__label {
  font-weight: 600;
  margin-right: 0.25rem;
}

.export-menu .btn {
  margin: 0;
  padding: 0.35rem 0.75rem;
  font-size: 0.9rem;
}

.analytics-stat {
  margin-bottom: 0;
}

.analytics-stat__label {
  margin: 0 0 var(--space-xs);
  font-size: 0.85rem;
  color: var(--muted);
}

.analytics-stat__value {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--brand-green-hover);
}

.badge.monitor-active {
  background: var(--ok-bg);
  color: #065f46;
}

.badge.monitor-idle {
  background: #fffbeb;
  color: #92400e;
}

.badge.monitor-submitted {
  background: var(--brand-green-muted);
  color: var(--slate);
}

.badge.monitor-expired {
  background: var(--danger-bg);
  color: var(--danger);
}

.fullscreen-banner {
  margin-bottom: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius);
  border: 1px solid #fcd34d;
  background: #fffbeb;
  color: #92400e;
}

.q-prompt-html img,
.q-option-html img {
  max-width: 100%;
  height: auto;
}

.text-answer-input {
  width: 100%;
  max-width: 24rem;
  padding: 0.55rem 0.85rem;
  border-radius: 8px;
  border: 1px solid var(--border-strong);
}

.calc-panel {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 90;
  width: min(16rem, 90vw);
  margin: 0;
}

.calc-panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-sm);
}

.calc-panel-head button {
  margin: 0;
}

.calc-display {
  width: 100%;
  margin-bottom: var(--space-sm);
}

.calc-keys {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.35rem;
}

.calc-keys button {
  margin: 0;
  padding: 0.45rem;
  min-width: 0;
}

.calc-keys .calc-wide {
  grid-column: span 2;
}

.option-row {
  margin: 0.45rem 0;
}

.option-row label {
  display: inline;
  font-weight: 400;
  color: var(--text);
  cursor: pointer;
}

.timer {
  font-size: clamp(1.1rem, 3vw, 1.35rem);
  font-weight: 700;
  color: var(--brand-green-hover);
}

.q {
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--border);
}

.q:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

/* —— Admin exam window (date + time pickers) —— */
.exam-window-fieldset {
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  padding: var(--space-md) var(--space-md) var(--space-lg);
  margin: var(--space-md) 0;
  background: var(--brand-green-muted);
}

.exam-window-fieldset legend {
  padding: 0 0.35rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--slate);
  letter-spacing: -0.01em;
}

.exam-window-fieldset__intro {
  margin: 0 0 var(--space-lg);
  max-width: 42rem;
  line-height: 1.5;
}

.exam-window-section {
  margin-bottom: var(--space-lg);
}

.exam-window-section:last-of-type {
  margin-bottom: 0;
}

.exam-window-section__title {
  margin: 0 0 var(--space-sm);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.exam-window-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  align-items: start;
}

@media (max-width: 36rem) {
  .exam-window-pair {
    grid-template-columns: 1fr;
  }
}

.exam-window-field label {
  font-size: 0.85rem;
}

.exam-window-field .exam-window-input,
.exam-window-field input.exam-window-input {
  width: 100%;
  max-width: 12.5rem;
}

.exam-window-field__errors {
  margin: var(--space-xs) 0 0;
  padding-left: 1.15rem;
  font-size: 0.875rem;
}

/* —— Error pages (aligned with main app: error_code / error_title / error_message) —— */
.error-page__code {
  font-size: clamp(2.5rem, 8vw, 3.5rem);
  font-weight: 700;
  color: var(--brand-green);
  line-height: 1;
  margin: 0 0 var(--space-sm);
}

.error-page h1 {
  margin-top: 0;
  font-size: clamp(1.2rem, 3vw, 1.45rem);
}

.error-page__message {
  color: var(--muted);
  margin-bottom: 0;
}

.error-page__actions {
  margin: var(--space-lg) 0 0;
}

/* —— Small screens —— */
@media (max-width: 480px) {
  .site-header__inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .site-nav {
    width: 100%;
    padding-top: var(--space-xs);
    border-top: 1px solid var(--border);
  }

  .brand__logo {
    max-width: 70vw;
  }

  .container {
    padding-left: max(var(--space-md), env(safe-area-inset-left));
    padding-right: max(var(--space-md), env(safe-area-inset-right));
  }

  .take-toolbar-row,
  .paged-nav,
  .modal-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .take-toolbar-row button,
  .paged-nav button,
  .modal-actions button {
    width: 100%;
  }
}

@media (max-width: 36rem) {
  input,
  select,
  textarea,
  .calc-display {
    font-size: 16px;
  }

  .palette-panel {
    position: static;
    max-height: none;
  }
}