/* Respect the hidden attribute even on flex/grid elements */
[hidden] {
  display: none !important;
}

/* Mode switch (shared) ---------------------------------------------------- */
.mode-switch {
  display: inline-flex;
  gap: 4px;
  padding: 4px;
  border-radius: 10px;
  background: var(--elevation-background);
  margin-bottom: 10px;
}
.mode-switch button {
  background: transparent;
  font-size: 0.95rem;
  padding: 8px 18px;
}
.mode-switch button[aria-selected='true'] {
  background: var(--primary-button-bg);
  color: var(--primary-button-color);
}

/* Advanced layout -------------------------------------------------------- */
.adv {
  --adv-accent: #1a73e8;
  --adv-ok: #188038;
  --adv-err: #d93025;
}
body.dark .adv {
  --adv-accent: #8ab4f8;
  --adv-ok: #81c995;
  --adv-err: #f28b82;
}
.adv h1 {
  margin-bottom: 0.3em;
}
.adv-badge {
  font-size: 1rem;
  vertical-align: middle;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--adv-accent);
  color: #fff;
}
body.dark .adv-badge {
  color: #111;
}
.adv-lead {
  max-width: 760px;
  line-height: 1.5;
}
.adv-hint {
  font-size: 0.82rem;
  opacity: 0.8;
  line-height: 1.45;
}
.adv-status {
  font-size: 0.85rem;
  line-height: 1.4;
}
.adv-status.error {
  color: var(--adv-err);
}
.adv code {
  background: var(--elevation-background);
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 0.85em;
}
.adv textarea {
  width: 100%;
  padding: 10px;
  border-radius: 4px;
  border: 1px solid var(--field-borders);
  background: transparent;
  color: var(--font-color-primary);
  font: inherit;
  font-size: 0.92rem;
  line-height: 1.45;
  resize: vertical;
}
.adv input[type='checkbox'],
.adv input[type='radio'] {
  width: auto;
  display: inline-block;
  margin: 0 6px 0 0;
  vertical-align: middle;
}
.adv button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}
.adv button.needs-ai {
  opacity: 0.65;
}
.adv button:focus-visible,
.adv input:focus-visible,
.adv select:focus-visible,
.adv textarea:focus-visible,
.adv summary:focus-visible {
  outline: 2px solid var(--adv-accent);
  outline-offset: 2px;
}

/* Tabs */
.adv-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  border-bottom: 1px solid var(--field-borders);
  margin: 20px 0;
}
.adv-tabs button {
  background: transparent;
  border-radius: 6px 6px 0 0;
  border-bottom: 3px solid transparent;
  padding: 10px 16px;
}
.adv-tabs button[aria-selected='true'] {
  border-bottom-color: var(--adv-accent);
  font-weight: bold;
}

/* Steps */
.adv-step {
  border: 1px solid var(--field-borders);
  border-radius: 8px;
  margin-bottom: 16px;
  background: var(--background-primary);
}
.adv-step > summary {
  cursor: pointer;
  padding: 14px 18px;
  font-size: 1.1rem;
  font-weight: bold;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 10px;
}
.adv-step > summary::-webkit-details-marker {
  display: none;
}
.adv-step > summary::after {
  content: '▸';
  margin-left: auto;
  transition: transform 0.15s ease;
}
.adv-step[open] > summary::after {
  transform: rotate(90deg);
}
.adv-step > summary .num {
  display: inline-grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--adv-accent);
  color: #fff;
  font-size: 0.9rem;
}
body.dark .adv-step > summary .num {
  color: #111;
}
.adv-step-body {
  padding: 0 18px 18px;
}

.adv-two-col {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 24px;
  align-items: start;
}
.adv-preview-col {
  position: sticky;
  top: 10px;
}
.adv-page-preview {
  width: 100%;
  overflow: hidden;
  box-shadow: 4px 4px 18px rgba(0, 0, 0, 0.18);
  border-radius: 2px;
  background: #fff;
}

.adv-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 12px 14px;
  align-items: end;
}
.adv-grid .span-2 {
  grid-column: span 2;
}
.adv-check {
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  min-height: 38px;
  cursor: pointer;
}
.adv-row {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-bottom: 8px;
}
.adv-row input {
  flex: 1;
}
.adv-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin: 12px 0;
}
.adv-small {
  padding: 5px 10px;
  font-size: 0.8rem;
}
.adv-icon-btn {
  padding: 4px 10px;
  font-size: 1.1rem;
  line-height: 1;
}
.adv-file-btn {
  display: inline-block;
  position: relative;
  overflow: hidden;
  border-radius: 6px;
  padding: 10px 20px;
  background: var(--elevation-background);
  color: var(--font-color-primary);
  font-size: 0.85rem;
  cursor: pointer;
}
.adv-file-btn input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.adv-segmented {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}
.adv-segmented label {
  border: 1px solid var(--field-borders);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 0.88rem;
  cursor: pointer;
}
.adv-segmented label:has(input:checked) {
  border-color: var(--adv-accent);
  box-shadow: inset 0 0 0 1px var(--adv-accent);
}
.adv-manual {
  border: 1px dashed var(--field-borders);
  border-radius: 8px;
  padding: 10px 14px;
  margin: 12px 0;
}
.adv-manual > summary {
  cursor: pointer;
  font-size: 0.9rem;
}
.adv-docinfo {
  margin: 10px 0;
}

/* Question cards */
.q-card {
  border: 1px solid var(--field-borders);
  border-radius: 8px;
  padding: 12px;
  margin: 12px 0;
}
.q-card.working {
  border-color: var(--adv-accent);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--adv-accent) 25%, transparent);
}
.q-head {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-bottom: 8px;
}
.q-head input.q-num {
  width: 70px;
}
.q-head input.q-marks {
  width: 80px;
}
.q-spacer {
  flex: 1;
}
.q-text {
  font-weight: bold;
}
.q-body {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 3fr);
  gap: 12px;
  align-items: start;
}
.q-col {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}
.q-label {
  font-size: 0.78rem;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--label-color);
}
.q-body textarea {
  min-height: 140px;
  max-height: 75vh;
  overflow-y: auto;
}
@media (max-width: 900px) {
  .q-body {
    grid-template-columns: minmax(0, 1fr);
  }
  .q-body textarea {
    min-height: 80px;
  }
}

/* Front page */
.fp-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}
.fp-canvas-wrap {
  position: relative;
  box-shadow: 4px 4px 18px rgba(0, 0, 0, 0.18);
  line-height: 0;
}
#fp-canvas {
  width: 100%;
  height: auto;
  display: block;
  background: #fff;
}
#fp-handles {
  position: absolute;
  inset: 0;
}
.fp-handle {
  position: absolute;
  border: 1px dashed rgba(26, 115, 232, 0.7);
  border-radius: 3px;
  cursor: move;
  touch-action: none;
  background: rgba(26, 115, 232, 0.06);
}
.fp-handle.empty {
  border-color: rgba(217, 48, 37, 0.8);
  background: rgba(217, 48, 37, 0.08);
}
.fp-handle.dragging,
.fp-handle:focus {
  outline: 2px solid var(--adv-accent);
}
/* Name tag on each field box */
.fp-tag {
  position: absolute;
  left: -1px;
  bottom: 100%;
  max-width: 220px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  padding: 1px 6px;
  border-radius: 4px 4px 0 0;
  background: rgba(26, 115, 232, 0.85);
  color: #fff;
  font: 11px/1.4 var(--font-family-primary);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.1s ease;
}
.fp-handle.empty .fp-tag {
  background: rgba(217, 48, 37, 0.9);
}
.fp-handle:hover .fp-tag,
.fp-handle.selected .fp-tag,
.fp-handle:focus .fp-tag,
.fp-handle.empty .fp-tag {
  opacity: 1;
}
.fp-handle.selected {
  border: 2px solid var(--adv-accent);
  background: rgba(26, 115, 232, 0.12);
}

/* Toolbar for the selected field */
.fp-popover {
  position: absolute;
  z-index: 5;
  width: 300px;
  max-width: 100%;
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  line-height: normal;
  border: 1px solid var(--field-borders);
  border-radius: 8px;
  background: var(--background-primary);
  color: var(--font-color-primary);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}
.fp-popover select,
.fp-popover input {
  padding: 7px 8px;
  font-size: 0.85rem;
}
.fp-pop-row {
  display: flex;
  gap: 6px;
  align-items: center;
}
.fp-pop-row select {
  flex: 1;
}
.fp-row.selected {
  outline: 2px solid var(--adv-accent);
  outline-offset: 2px;
  border-radius: 4px;
}

.fp-row {
  display: grid;
  grid-template-columns: 1.2fr 1.4fr 70px auto;
  gap: 6px;
  margin-bottom: 6px;
  align-items: center;
}
.fp-row select,
.fp-row input {
  padding: 8px;
  font-size: 0.82rem;
  min-width: 0;
}
/* Long field names ("Enrollment / Registration no.") end with "…" instead
   of running under the dropdown arrow. */
.fp-row select,
.fp-popover select {
  padding-right: 28px;
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
}

.adv-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  margin: 10px 0;
}
.chip {
  display: inline-flex;
  border: 1px solid var(--field-borders);
  border-radius: 999px;
  overflow: hidden;
}
.chip button {
  border-radius: 0;
  padding: 6px 10px;
  font-size: 0.8rem;
}

/* Pages preview */
.adv-pages {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin: 16px 0;
}
.adv-pages figure {
  margin: 0;
}
.adv-pages figcaption {
  text-align: center;
  font-size: 0.8rem;
  margin-top: 6px;
}
.adv-thumb {
  overflow: hidden;
  box-shadow: 4px 4px 18px rgba(0, 0, 0, 0.2);
  background: #fff;
}

/* Profile: fill from a file */
.adv-profile-file {
  margin: 0 0 20px;
  border-color: var(--adv-accent);
}
.adv-steps-list {
  margin: 4px 0 0;
  padding-left: 20px;
  font-size: 0.88rem;
  line-height: 1.5;
}
.adv-steps-list li {
  margin-bottom: 4px;
}

/* Courses */
.adv-course-row {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1.4fr 1.2fr auto;
  gap: 6px;
  margin-bottom: 6px;
  align-items: center;
}
.adv-course-row.active input {
  border-color: var(--adv-accent);
}
.adv-course-head small {
  opacity: 0.7;
}
.fp-course-bar {
  margin: 10px 0 16px;
  max-width: 640px;
}
.chip-text {
  padding: 6px 10px;
  font-size: 0.8rem;
}

/* "Use these details?" pop-up */
.meta-dialog {
  border: 1px solid var(--field-borders);
  border-radius: 10px;
  padding: 20px 22px;
  width: min(640px, calc(100vw - 32px));
  background: var(--background-primary);
  color: var(--font-color-primary);
}
.meta-dialog::backdrop {
  background: rgba(0, 0, 0, 0.45);
}
.meta-dialog h3 {
  margin-top: 0;
}
.meta-rows {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 12px 0;
}
.meta-row {
  display: grid;
  grid-template-columns: auto 130px 1fr;
  gap: 4px 10px;
  align-items: center;
  font-size: 0.88rem;
}
.meta-row .meta-current {
  grid-column: 3;
  opacity: 0.7;
  font-size: 0.75rem;
}
.meta-row input:not([type='checkbox']) {
  padding: 8px;
}

@media (max-width: 700px) {
  .adv-course-row {
    grid-template-columns: 1fr 1fr;
  }
}

/* Templates tab */
.adv-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.adv-list-item {
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.adv-list-item.active {
  box-shadow: inset 3px 0 0 var(--adv-accent);
}
.adv-list-item small {
  opacity: 0.7;
}
#tpl-editor .adv-grid {
  align-items: start;
}
.adv-panel[data-panel='templates'] .adv-two-col {
  grid-template-columns: 260px minmax(0, 1fr);
}

.adv-custom-fields {
  margin-bottom: 10px;
}

/* Off-screen stage for measuring / capturing pages */
#hw-stage {
  position: absolute;
  left: -20000px;
  top: 0;
  width: 700px;
  pointer-events: none;
}

/* Toast */
#adv-toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%) translateY(20px);
  opacity: 0;
  pointer-events: none;
  background: #222;
  color: #fff;
  padding: 12px 18px;
  border-radius: 8px;
  max-width: min(560px, calc(100vw - 32px));
  font-size: 0.9rem;
  z-index: 1000000;
  transition: 0.2s ease;
}
#adv-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}
#adv-toast.error {
  background: #b3261e;
}
#adv-toast.success {
  background: #146c2e;
}

@media (max-width: 900px) {
  .adv-two-col,
  .fp-layout,
  .adv-panel[data-panel='templates'] .adv-two-col {
    grid-template-columns: 1fr;
  }
  .adv-preview-col {
    position: static;
    max-width: 360px;
  }
  .adv-grid .span-2 {
    grid-column: auto;
  }
}
.q-warn {
  color: var(--adv-err);
  margin: 6px 0 0;
}
.q-figs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.q-figs:empty {
  display: none;
}
.q-fig {
  position: relative;
  border: 1px solid var(--field-borders);
  border-radius: 4px;
  background: #fff;
  padding: 4px;
}
.q-fig img {
  display: block;
  max-width: 100%;
  max-height: 220px;
}
.q-fig button {
  position: absolute;
  top: 2px;
  right: 2px;
}
.q-add-img {
  align-self: flex-start;
}
.q-fig-caution {
  margin: 0;
  color: var(--font-color-primary);
  background: color-mix(in srgb, #f9ab00 18%, transparent);
  border-left: 3px solid #f9ab00;
  padding: 6px 8px;
  border-radius: 4px;
}
.q-col .q-add-img + .q-add-img {
  margin-top: 0;
}
.q-parent {
  margin: 0 0 8px;
  font-weight: bold;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.q-diagrams {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 6px;
}
.q-diagrams:empty {
  display: none;
}
.q-diagrams .adv-hint {
  margin: 0;
}
.q-diagram {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  padding: 6px 8px;
  border: 1px dashed var(--field-borders);
  border-radius: 6px;
}
.q-diagram-name {
  flex: 1 1 100%;
  font-weight: bold;
}
.q-answer-imgs {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 6px;
}
.q-answer-imgs:empty {
  display: none;
}
.q-answer-imgs .adv-hint {
  margin: 0;
}
.q-answer-img {
  margin: 0;
  border: 1px solid var(--field-borders);
  border-radius: 6px;
  overflow: hidden;
}
.q-answer-img img {
  display: block;
  width: 100%;
  max-height: 260px;
  object-fit: contain;
  /* The page's paper behind it: plain, or ruled if "Ruled lines" is on. */
  background: #fff;
}
.q-answer-img img.ruled {
  background: #fff repeating-linear-gradient(
      to bottom,
      transparent 0 27px,
      #c9d4ee 27px 28px
    );
}
.q-answer-img figcaption {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  padding: 6px 8px;
}
.q-answer-img figcaption span {
  flex: 1;
  font-weight: bold;
}
/* Destructive action (Clear all): sits apart, in red. */
.adv .adv-danger {
  margin-left: auto;
  color: var(--font-color-delete);
  border: 1px solid var(--delete-button-borders);
  background: transparent;
}