/* @req R-LV-020 R-LV-036 R-LV-050 R-LV-030 — Section detail styles */

.section-page {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-lg);
}

/* Section header */
.section-header {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.section-header__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  margin-bottom: var(--spacing-md);
}

.section-header__title {
  font-size: 20px;
  font-weight: 700;
  flex: 1;
  min-width: 0;
}

.section-header__description {
  font-size: 14px;
  color: var(--color-text-muted);
  margin-top: var(--spacing-xs);
  cursor: pointer;
  overflow: hidden;
}

.section-header__description.collapsed {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.section-header__meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  margin-top: var(--spacing-md);
}

.section-header__field {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.section-header__field label {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
  margin: 0;
}

.section-header__field select,
.section-header__field input[type="text"] {
  width: auto;
  min-width: 120px;
  font-size: 13px;
  padding: 5px 10px;
}

.section-header__field select {
  padding-right: 28px;
}

.section-header__last-updated {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-top: var(--spacing-sm);
  font-style: italic;
}

/* Desktop 2-column layout */
@media (min-width: 1024px) {
  .section-content-grid {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: var(--spacing-lg);
    align-items: start;
  }
}

.section-main {
  min-width: 0;
}

.section-sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

/* Field rows */
.field-row {
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
}

.field-row:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.field-row__label {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.field-row__help {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-xs);
}

.field-row__source {
  font-size: 11px;
  color: var(--color-text-muted);
  margin-top: 4px;
}

.field-row__source--llm {
  color: var(--color-success);
}

/* Section panel */
.section-panel {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.section-panel__header {
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

.section-panel__body {
  padding: var(--spacing-md);
}

/* Tasks */
.task-row {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--color-border);
}

.task-row:last-child {
  border-bottom: none;
}

.task-row.done .task-row__title {
  text-decoration: line-through;
  color: var(--color-text-muted);
  opacity: 0.7;
}

.task-row__check {
  flex-shrink: 0;
  margin-top: 2px;
  width: 16px;
  height: 16px;
  cursor: pointer;
  accent-color: var(--color-accent);
}

.task-row__main {
  flex: 1;
  min-width: 0;
}

.task-row__title {
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 2px;
  cursor: pointer;
}

.task-row__meta {
  font-size: 12px;
  color: var(--color-text-muted);
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.task-row__notes {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-top: var(--spacing-xs);
  display: none;
  white-space: pre-wrap;
}

.task-row.expanded .task-row__notes {
  display: block;
}

.task-row__actions {
  display: flex;
  gap: 4px;
  flex-shrink: 0;
}

/* Add task form */
.add-task-form {
  border-top: 1px solid var(--color-border);
  padding-top: var(--spacing-md);
  margin-top: var(--spacing-sm);
}

.add-task-form .form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-sm);
}

@media (max-width: 480px) {
  .add-task-form .form-row {
    grid-template-columns: 1fr;
  }
}

/* Drop zone */
.drop-zone {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-xl);
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
  color: var(--color-text-muted);
}

.drop-zone:hover,
.drop-zone.drag-over {
  border-color: var(--color-accent);
  background: #f0fdfc;
  color: var(--color-accent);
}

.drop-zone__icon {
  font-size: 32px;
  margin-bottom: var(--spacing-sm);
}

.drop-zone__text {
  font-size: 14px;
  font-weight: 500;
}

.drop-zone__hint {
  font-size: 12px;
  margin-top: 4px;
}

/* Document list */
.doc-row {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--color-border);
  flex-wrap: wrap;
}

.doc-row:last-child {
  border-bottom: none;
}

.doc-row__icon {
  font-size: 20px;
  flex-shrink: 0;
}

.doc-row__info {
  flex: 1;
  min-width: 0;
}

.doc-row__name {
  font-size: 13px;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.doc-row__meta {
  font-size: 11px;
  color: var(--color-text-muted);
}

.doc-row__actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  flex-shrink: 0;
}

/* Upload progress */
.upload-progress {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
}

.upload-progress__name {
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 4px;
}

.upload-progress__bar {
  height: 4px;
  background: var(--color-border);
  border-radius: 2px;
  overflow: hidden;
}

.upload-progress__fill {
  height: 100%;
  background: var(--color-accent);
  border-radius: 2px;
  transition: width 0.2s;
}

/* Status badge cycling */
.status-cycle-btn {
  cursor: pointer;
  border: none;
  background: none;
  padding: 0;
}

/* Save bar */
.save-bar {
  position: sticky;
  bottom: 0;
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-md) var(--spacing-lg);
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-sm);
  margin: 0 calc(-1 * var(--spacing-lg));
  box-shadow: 0 -2px 8px rgba(0,0,0,0.04);
}

/* AI Chat panel */
.ai-chat-panel {
  display: flex;
  flex-direction: column;
  height: 500px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-surface);
}

.ai-chat__messages {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.ai-chat__bubble {
  max-width: 85%;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  line-height: 1.5;
  font-size: 0.875rem;
  white-space: pre-wrap;
}

.ai-chat__bubble--user {
  background: var(--color-accent);
  color: #fff;
  align-self: flex-end;
  border-bottom-right-radius: 4px;
}

.ai-chat__bubble--assistant {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  align-self: flex-start;
  border-bottom-left-radius: 4px;
}

.ai-chat__bubble--typing {
  color: var(--color-text-muted);
  font-style: italic;
}

.ai-chat__suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-sm);
}

.ai-chat__apply-btn {
  display: inline-block;
  padding: 3px 10px;
  font-size: 0.75rem;
  border-radius: var(--radius-sm);
  background: var(--color-highlight);
  color: var(--color-accent-dark);
  border: 1px solid var(--color-border);
  cursor: pointer;
}

.ai-chat__apply-btn:hover { background: var(--color-surface-alt); }
.ai-chat__apply-btn.applied { background: var(--color-success); color: #fff; cursor: default; }

.ai-chat__form {
  display: flex;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  border-top: 1px solid var(--color-border);
  background: var(--color-bg);
}

.ai-chat__input {
  flex: 1;
  resize: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm);
  font-family: var(--font-stack);
  font-size: 0.875rem;
}

.ai-chat__send { align-self: flex-end; }

.field-input--applied {
  outline: 2px solid var(--color-success);
  transition: outline 0.5s;
}