/* Question Scout — embedded dialog UI */

:root {
  --app-text: #333;
  --app-text-secondary: #595959;
  --app-text-muted: #777;
  --app-border: #dedede;
  --app-surface: #f5f5f5;
  --app-surface-on: #fff;
  --app-success: #0f8521;
  --app-warning: #d1a900;
  --app-warning-text: #d97706;
  --app-hover: #fafafa;
  --app-input-border: #777;
  --app-focus-ring: #ff7043;
  --app-error-bg: #fef2f2;
  --app-error-border: #fecaca;
  --app-error-text: #991b1b;
  --app-success-bg: #f0fdf4;
  --app-success-border: #bbf7d0;
  --app-success-text: #166534;
}

html,
body {
  height: 100%;
  margin: 0;
  overflow: hidden;
}
body {
  display: flex;
  flex-direction: column;
  background: var(--app-surface-on);
  font-family:
    "Roboto", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: var(--font-size-14);
  color: var(--app-text);
}

/* ── Animations ───────────────────────────── */
.step-enter {
  animation: stepIn 0.25s ease-out;
}
@keyframes stepIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ── Header ───────────────────────────────── */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 16px;
  background: var(--app-text);
  flex-shrink: 0;
}
.header-brand {
  display: flex;
  align-items: center;
  gap: 8px;
}
.header-brand span {
  font-size: var(--font-size-14);
  font-weight: 600;
  color: var(--app-surface-on);
}
.header-stats {
  font-size: var(--font-size-12);
  color: var(--app-surface-on);
  opacity: 0.75;
  white-space: nowrap;
}

/* ── Header progress steps ────────────────── */
.step-progress {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: var(--font-size-12);
  color: var(--app-surface-on);
  white-space: nowrap;
}
.step {
  display: inline-flex;
  align-items: baseline;
  gap: 4px;
  transition: opacity 0.3s ease-out;
}
.step-value {
  font-weight: 600;
  transition: color 0.3s ease-out;
  display: inline-flex;
  align-items: center;
  min-width: 12px;
}
.step-spinner {
  vertical-align: middle;
}
.step-label {
  opacity: 0.85;
}
.step-sep {
  opacity: 0.45;
  transition: opacity 0.3s ease-out;
}
/* Non-active steps (pending + complete): light grey. */
.step--pending,
.step--complete {
  opacity: 0.5;
}
/* Active: full white. */
.step--active {
  opacity: 1;
}

/* ── Content area ─────────────────────────── */
#content {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
}

/* ── Footer ───────────────────────────────── */
.footer {
  border-top: 1px solid var(--app-border);
  padding: 8px 16px;
  background: var(--app-surface);
  flex-shrink: 0;
  box-sizing: border-box;
  min-height: 53px;
  display: flex;
  align-items: center;
}
.footer > * {
  flex: 1;
}

/* ── Number input: hide spinners ──────────── */
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
input[type="number"] {
  -moz-appearance: textfield;
}

/* ── Input step ───────────────────────────── */
.input-step {
  display: flex;
  flex-direction: column;
  padding: 12px 16px;
  height: 100%;
  min-height: 0;
  box-sizing: border-box;
}
.input-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}
.course-info {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 4px;
  background: var(--app-surface);
}
.course-info .course-name {
  font-weight: 600;
  color: var(--app-text);
}
.input-header-right {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
}
d-input {
  --d-input-height: 36px;
}
.input-header d-input {
  --d-input-width: 160px;
}
.input-header-right d-input {
  --d-input-width: 80px;
}
.course-edit {
  flex: 1;
  min-width: 0;
}
.course-edit d-input {
  --d-input-width: 100%;
  display: block;
}

.textarea-wrap {
  flex: 1;
  position: relative;
  min-height: 0;
  margin-top: 8px;
}
.textarea-label {
  position: absolute;
  top: -8px;
  left: 7px;
  z-index: 1;
  background: var(--app-surface-on);
  padding: 0 4px;
  font-size: var(--font-size-12);
  color: var(--app-text-secondary);
  pointer-events: none;
}
.input-textarea {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  resize: none;
  padding: 12px;
  border: 1px solid var(--app-input-border);
  border-radius: 4px;
  line-height: 1.6;
  font-family: inherit;
  font-size: var(--font-size-14);
  color: var(--app-text);
  box-sizing: border-box;
}
.input-textarea::placeholder {
  color: var(--app-input-border);
}
.input-textarea:focus {
  outline: none;
  border-color: var(--app-text);
}

.file-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 8px 0 0;
  flex-shrink: 0;
}
.file-list:empty {
  display: none;
}

.input-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.input-footer-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

/* ── Analyzing state ──────────────────────── */
.analyzing-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
}
.analyzing-state .label {
  font-size: var(--font-size-16);
  font-weight: 500;
  color: var(--app-text);
  margin: 0 0 8px;
}
.analyzing-state .sublabel {
  font-size: var(--font-size-14);
  color: var(--app-text-secondary);
  margin: 0;
}

/* ── Skeleton loading ─────────────────────── */
@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}
.skeleton-bar {
  height: 14px;
  border-radius: 4px;
  background: linear-gradient(
    90deg,
    var(--app-surface) 25%,
    var(--app-border) 50%,
    var(--app-surface) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}
.skeleton-title-bar {
  height: 36px;
  width: 100%;
  margin-bottom: 12px;
}
.concept-row .skeleton-bar {
  height: 20px;
}
@keyframes skeletonRowIn {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.skeleton-row {
  opacity: 0;
  animation: skeletonRowIn 0.3s ease-out forwards;
  animation-delay: var(--row-delay, 0s);
}
.concept-row--entering {
  animation: skeletonRowIn 0.35s ease-out both;
}

/* Look-ahead skeleton management: rows past the initial 2 are hidden
   (display:none). The extension removes .future-row on a stagger to
   maintain 1 trailing skeleton after each reveal. */
.future-row {
  display: none;
}
/* When .future-row is removed, the row pops in via display:table-row.
   `backwards` fill-mode applies the opacity:0 keyframe-0 state during the
   pre-animation delay so the un-hide fades in instead of popping. */
.skel-fade-in {
  animation: skeletonRowIn 0.35s ease-out backwards;
}

/* Cross-fade reveal: progressive-reveal extension toggles `pre-reveal`.
   Pre-reveal: skeleton visible, real hidden.
   Post-reveal: cellFadeOut fades skeleton out, skeletonRowIn fades real in. */
@keyframes cellFadeOut {
  to {
    opacity: 0;
  }
}
.pre-reveal .cell-skel {
  opacity: 1;
}
.pre-reveal .cell-real {
  opacity: 0;
}
.concept-row:not(.pre-reveal) .cell-skel {
  animation: cellFadeOut 0.35s ease-out both;
}
.concept-row:not(.pre-reveal) .cell-real {
  animation: skeletonRowIn 0.35s ease-out both;
}

/* Stack cell-skel over cell-real so each <td> sizes to a single line height
   (otherwise both take vertical space → row is ~2x natural height). */
.concept-row td {
  position: relative;
}
.concept-row td > .cell-skel {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
}

/* ── Building step ────────────────────────── */
.building-content {
  padding: 12px 16px;
}
.building-content d-input {
  --d-input-width: 100%;
}
.truncation-warning {
  background: var(--d-color-warning-container, #fff3e0);
  color: var(--d-color-on-warning-container, #663c00);
  padding: 8px 12px;
  border-radius: 4px;
  margin-bottom: 12px;
  font-size: 14px;
}
.concept-table {
  width: 100%;
  border-collapse: collapse;
}
.concept-table thead th {
  text-align: left;
  font-size: var(--font-size-12);
  font-weight: 500;
  color: var(--app-text);
  padding: 0 0 8px;
  border-bottom: 1px solid var(--app-border);
}
.concept-table thead th + th {
  padding-left: 8px;
}
.concept-table thead th.col-arrow {
  width: 24px;
  padding-left: 0;
}
.concept-table thead th.col-status {
  width: 180px;
}
.concept-table thead th.col-questions {
  width: 90px;
}

.concept-row {
  cursor: pointer;
}
.concept-row:hover {
  background: var(--app-hover);
}
.concept-row:focus-visible {
  outline: 2px solid var(--app-focus-ring);
  outline-offset: -2px;
  background: var(--app-hover);
}
.concept-row td {
  padding: 8px 0;
  border-bottom: 1px solid var(--app-border);
}
.concept-row.expanded td {
  border-bottom: none;
}
.concept-row td + td {
  padding-left: 8px;
}
.concept-row td.col-arrow {
  padding-left: 0;
  vertical-align: middle;
}

.concept-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  --d-icon-color: var(--app-text-secondary);
  transition: transform 0.15s;
}
.concept-row.expanded .concept-arrow {
  transform: rotate(90deg);
}
.concept-name {
  font-weight: 600;
  color: var(--app-text);
}

.concept-status {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--app-text);
  opacity: 0;
  transform: translateY(4px);
  transition:
    opacity 0.2s ease-out,
    transform 0.2s ease-out;
}
.concept-status--visible {
  opacity: 1;
  transform: translateY(0);
}
.concept-status .status-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* Looping fade-in/out on "Searching…" so the status feels active while the
   row is in the searching state. Each row gets a randomized duration (set
   via --pulse-dur in JS) so rows don't pulse in unison. */
.concept-status--searching {
  /* `both` fill-mode keeps the animation's opacity/transform applied before
     it starts too, so we don't get an initial fade-in on top of the pulse. */
  animation: status-pulse var(--pulse-dur, 2.2s) ease-in-out infinite both;
  /* Neutralize the one-shot fade-in transition — the pulse is the whole
     animation while in the searching state. */
  transition: none;
  opacity: 1;
  transform: none;
}
@keyframes status-pulse {
  0%,
  100% {
    opacity: 0.35;
    transform: translateY(2px);
  }
  50% {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Flash the row background briefly when a concept gets its final result */
@keyframes rowComplete {
  0% {
    background: transparent;
  }
  30% {
    background: var(--app-hover);
  }
  100% {
    background: transparent;
  }
}
.concept-row--complete {
  animation: rowComplete 0.6s ease-out;
}

.concept-questions {
  color: var(--app-text);
}

.concept-detail-row td {
  padding: 0;
  border-bottom: 1px solid var(--app-border);
}
.concept-detail-row td.col-detail {
  padding: 4px 0 10px 8px;
}
.concept-detail {
  color: var(--app-text-secondary);
  line-height: 1.4;
}
.concept-detail .description {
  margin: 0 0 6px;
  font-size: var(--font-size-14);
}
.concept-detail .questions-list {
  margin: 4px 0 0;
  padding-left: 18px;
  font-size: var(--font-size-12);
  color: var(--app-text);
}
.concept-detail .questions-list li {
  margin: 2px 0;
}
.concept-detail .reason {
  font-size: var(--font-size-12);
  color: var(--app-warning-text);
  margin: 4px 0 0;
}

/* ── Building complete footer slide-in ───────── */
@keyframes footerSlideIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.building-footer-complete {
  animation: footerSlideIn 0.3s ease-out;
}

/* ── Building footer variants ─────────────── */
.building-footer-status {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--app-text);
}
.building-footer-status .status-left {
  display: flex;
  align-items: center;
  gap: 8px;
}
.building-footer-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  color: var(--app-text);
}
.building-footer-actions .status-left {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 4px;
  flex: 1;
  min-width: 0;
}
.building-footer-actions .status-left wa-progress-bar {
  display: block;
  width: 100%;
  --track-height: 6px;
  --track-color: var(--md-sys-color-outline-variant);
  --indicator-color: var(--md-sys-color-secondary);
}
.building-footer-actions.building-footer-complete .status-left {
  flex-direction: row;
  align-items: center;
  gap: 8px;
}
.building-footer-actions .status-left wa-progress-bar::part(indicator) {
  transition: width 2s ease;
}
.building-footer-right {
  display: flex;
  align-items: center;
  gap: 12px;
}
.footer-question-count {
  color: var(--app-text-secondary);
  font-size: var(--font-size-14);
}

/* ── Result page ─────────────────────────── */
.result-icon {
  --d-icon-size: 32px;
  --d-icon-color: var(--app-success);
}
.result-title {
  font-size: var(--font-size-16);
  font-weight: 500;
  color: var(--app-text);
}
.result-subtitle {
  color: var(--app-text-secondary);
}

/* ── Building complete footer ────────────── */
.build-complete-icon {
  --d-icon-size: 16px;
  --d-icon-color: var(--app-success);
}
.build-no-session-hint {
  color: var(--app-text-secondary);
  font-size: var(--font-size-12);
}

/* ── Alerts ───────────────────────────────── */
.alert {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 12px 16px;
  border-radius: 8px;
  border: 1px solid;
  margin: 12px 16px;
  font-size: var(--font-size-14);
  line-height: 1.5;
}
.alert-error {
  background: var(--app-error-bg);
  border-color: var(--app-error-border);
  color: var(--app-error-text);
}
.alert-icon {
  --d-icon-size: 20px;
  --d-icon-color: currentColor;
  flex-shrink: 0;
  margin-top: 1px;
}
/* When an alert is rendered in the footer, drop the card styling so the
   footer keeps its natural height, and hide the dismiss button. */
.footer .alert {
  margin: 0;
  padding: 0;
  border: none;
  background: transparent;
  border-radius: 0;
  color: var(--app-error-text);
}
.footer .alert-close {
  display: none;
}
.alert-success {
  background: var(--app-success-bg);
  border-color: var(--app-success-border);
  color: var(--app-success-text);
}
.alert-text {
  flex: 1;
}
.alert-close {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
  color: inherit;
  opacity: 0.5;
}
.alert-close:hover {
  opacity: 1;
}

/* ── No session ───────────────────────────── */
.no-session-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  padding: 24px;
  text-align: center;
  color: var(--app-text-secondary);
}

/* ── HTMX indicators ─────────────────────── */
.htmx-indicator {
  display: none;
}
.htmx-request .htmx-indicator,
.htmx-request.htmx-indicator {
  display: flex;
}
.htmx-request .htmx-hide-on-request {
  display: none;
}

/* ── Responsive ──────────────────────────── */
@media (max-width: 480px) {
  .input-header {
    flex-wrap: wrap;
  }
  .input-header-right {
    margin-left: 0;
    width: 100%;
    justify-content: flex-end;
  }
  .concept-table {
    display: block;
    overflow-x: auto;
  }
}

/* ── Utility ──────────────────────────────── */
.hidden {
  display: none !important;
}