/*
 * Shared component library — reused across marketing / auth / app / admin.
 * docs/design-system.md §11–14, §18.
 */

/* ---------------------------------------------------------------
 * Buttons (design-system.md §12)
 * ----------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 44px;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: var(--text-base);
  line-height: 1.2;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color var(--motion-fast) var(--ease-standard),
              border-color var(--motion-fast) var(--ease-standard),
              color var(--motion-fast) var(--ease-standard);
}

.btn:active { transition-duration: var(--motion-instant); }

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}
.btn-primary:hover { background: var(--color-primary-hover); color: #fff; }
.btn-primary:active { background: #17348f; }
.btn-primary[aria-disabled="true"],
.btn-primary:disabled {
  background: #94A3B8;
  color: #fff;
  cursor: not-allowed;
}

.btn-secondary {
  background: #fff;
  color: var(--color-heading);
  border-color: var(--color-border-strong);
}
.btn-secondary:hover { border-color: var(--color-primary); background: var(--color-primary-soft); color: var(--color-heading); }
.btn-secondary:disabled { border-color: var(--color-border); color: #94A3B8; cursor: not-allowed; }

.btn-ghost {
  background: transparent;
  color: var(--color-primary);
  border-color: transparent;
}
.btn-ghost:hover { background: var(--color-primary-soft); color: var(--color-primary); }

.btn-ghost-on-dark {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.24);
}
.btn-ghost-on-dark:hover { background: rgba(255, 255, 255, 0.08); color: #fff; }

.btn-destructive {
  background: #fff;
  color: var(--color-error);
  border-color: var(--color-error);
}
.btn-destructive:hover { background: var(--color-error-bg); color: var(--color-error); }

.btn-destructive-filled {
  background: var(--color-error);
  color: #fff;
}
.btn-destructive-filled:hover { background: #991515; color: #fff; }

.btn-block { width: 100%; }
.btn-sm { min-height: 36px; padding: var(--space-2) var(--space-4); font-size: var(--text-sm); }

.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: transparent;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: background-color var(--motion-fast) var(--ease-standard), color var(--motion-fast) var(--ease-standard);
}
.btn-icon:hover { background: var(--color-primary-soft); color: var(--color-primary); }
.btn-icon.on-dark { color: var(--color-app-sidebar-text); }
.btn-icon.on-dark:hover { background: rgba(255, 255, 255, 0.08); color: #fff; }

/* Loading state — reserved min-width prevents layout shift */
.btn[aria-busy="true"] {
  position: relative;
  color: transparent !important;
  pointer-events: none;
}
.btn[aria-busy="true"]::after {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.5);
  border-top-color: #fff;
  animation: spin var(--motion-spinner-cycle) var(--ease-linear) infinite;
}
.btn-secondary[aria-busy="true"]::after,
.btn-ghost[aria-busy="true"]::after {
  border-color: rgba(29, 78, 216, 0.3);
  border-top-color: var(--color-primary);
}
@media (prefers-reduced-motion: reduce) {
  .btn[aria-busy="true"]::after { animation: none; border-top-color: currentColor; }
}

.text-link {
  color: var(--color-primary);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 2px;
}
.text-link:hover { color: var(--color-primary-hover); }

/* ---------------------------------------------------------------
 * Forms (design-system.md §13)
 * ----------------------------------------------------------- */
.field { margin-bottom: var(--space-5); }
.field-row { display: flex; flex-direction: column; gap: var(--space-2); }

.field label,
.field legend {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-heading);
}

.field .hint {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.field .error-text {
  font-size: var(--text-sm);
  color: var(--color-error);
  display: flex;
  align-items: flex-start;
  gap: var(--space-1);
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="search"],
input[type="date"],
input[type="file"],
textarea,
select {
  width: 100%;
  min-height: 44px;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: #fff;
  transition: border-color var(--motion-fast) var(--ease-standard), background-color var(--motion-fast) var(--ease-standard);
}

textarea {
  min-height: 220px;
  line-height: 1.6;
  resize: vertical;
}

input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  border-color: var(--color-primary);
}

.field.has-error input,
.field.has-error textarea,
.field.has-error select {
  border-color: var(--color-error);
  background: var(--color-error-bg);
}

input:disabled, textarea:disabled, select:disabled {
  background: #F1F5F9;
  color: #94A3B8;
  border-color: var(--color-border);
  cursor: not-allowed;
}

select {
  appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23475569' stroke-width='2'><path d='M6 9l6 6 6-6'/></svg>");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  padding-right: var(--space-8);
}

input[type="checkbox"],
input[type="radio"] {
  accent-color: var(--color-primary);
  width: 18px;
  height: 18px;
}

fieldset {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  margin: 0 0 var(--space-5);
}
legend { padding: 0 var(--space-2); }

.radio-toggle {
  display: flex;
  gap: var(--space-6);
  flex-wrap: wrap;
}
.radio-toggle label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 500;
  color: var(--color-heading);
  min-height: 44px;
}

.form-errors {
  background: var(--color-error-bg);
  border: 1px solid var(--color-error);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  margin-bottom: var(--space-6);
  color: var(--color-error);
}
.form-errors ul { margin: 0; padding-left: 1.25em; }

/* ---------------------------------------------------------------
 * Flash / Alert (Alert / FormStatus)
 * ----------------------------------------------------------- */
.flash {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  margin-bottom: var(--space-6);
  font-weight: 500;
  border: 1px solid transparent;
  opacity: 0;
  transform: translateY(-8px);
  animation: flash-in var(--motion-base) var(--ease-out-soft) forwards;
}
@media (prefers-reduced-motion: reduce) {
  .flash { animation: none; opacity: 1; transform: none; }
}
@keyframes flash-in { to { opacity: 1; transform: translateY(0); } }

.flash-success { background: var(--color-success-bg); border-color: var(--color-success); color: var(--color-success); }
.flash-error { background: var(--color-error-bg); border-color: var(--color-error); color: var(--color-error); }
.flash-info { background: var(--color-primary-soft); border-color: var(--color-primary); color: var(--color-primary); }
.flash-warning { background: var(--color-warning-bg); border-color: var(--color-warning); color: var(--color-warning); }

.alert-info {
  display: flex;
  gap: var(--space-3);
  background: var(--color-primary-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  color: var(--color-heading);
  font-size: var(--text-sm);
}

/* ---------------------------------------------------------------
 * Cards — structured-card motif
 * ----------------------------------------------------------- */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}

.card-flat { box-shadow: none; }

.card-hover {
  transition: border-color var(--motion-base) var(--ease-standard), box-shadow var(--motion-base) var(--ease-standard);
}
.card-hover:hover { border-color: var(--color-border-strong); box-shadow: var(--shadow-md); }

.card-rule {
  border-left: var(--border-width-rule) solid var(--color-primary);
}
.card-rule-accent { border-left-color: var(--color-accent); }

/* ---------------------------------------------------------------
 * Badges / chips / status dots
 * ----------------------------------------------------------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  line-height: 1.4;
}
.badge-neutral { background: var(--color-bg-alt); color: var(--color-text-muted); border: 1px solid var(--color-border); }
.badge-info { background: var(--color-primary-soft); color: var(--color-primary); }
.badge-success { background: var(--color-success-bg); color: var(--color-success); }
.badge-warning { background: var(--color-warning-bg); color: var(--color-warning); }
.badge-error { background: var(--color-error-bg); color: var(--color-error); }
.badge-roadmap { background: #F1F5F9; color: #64748B; border: 1px dashed #CBD5E1; }

.status-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  display: inline-block;
  flex: none;
}
.status-processing .status-dot { background: var(--color-warning); }
.status-processed .status-dot { background: var(--color-accent); }
.status-failed .status-dot { background: var(--color-error); }

.status-label { display: inline-flex; align-items: center; gap: var(--space-2); font-size: var(--text-sm); font-weight: 500; }
.status-processing .status-label-text { color: var(--color-warning); }
.status-processed .status-label-text { color: var(--color-success); }
.status-failed .status-label-text { color: var(--color-error); }

.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-xs);
  font-weight: 500;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  background: var(--color-bg-alt);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}
.chip-mono { font-family: var(--font-mono); }
.chip-owner { color: var(--color-heading); }
.chip-deadline { color: var(--color-heading); }

/* ---------------------------------------------------------------
 * Accordion (FAQ + transcript disclosure) — grid-rows technique
 * ----------------------------------------------------------- */
.accordion-item {
  border-bottom: 1px solid var(--color-border);
}
.accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: 44px;
  padding: var(--space-4) 0;
  background: none;
  border: none;
  text-align: left;
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--color-heading);
  cursor: pointer;
}
.accordion-icon {
  flex: none;
  transition: transform var(--motion-base) var(--ease-standard);
}
.accordion-trigger[aria-expanded="true"] .accordion-icon { transform: rotate(180deg); }
@media (prefers-reduced-motion: reduce) {
  .accordion-icon { transition: none; }
}

.accordion-panel {
  display: grid;
  grid-template-rows: 0fr;
  opacity: 0;
  transition: grid-template-rows var(--motion-base) var(--ease-out-soft), opacity var(--motion-base) var(--ease-out-soft);
}
.accordion-item.is-open .accordion-panel,
.accordion-trigger[aria-expanded="true"] + .accordion-panel {
  grid-template-rows: 1fr;
  opacity: 1;
}
.accordion-panel-inner { overflow: hidden; }
.accordion-panel .accordion-panel-inner {
  padding-bottom: var(--space-4);
  color: var(--color-text-muted);
}
@media (prefers-reduced-motion: reduce) {
  .accordion-panel { transition: none; }
}

/* Transcript-specific */
.transcript-toggle { display: inline-flex; align-items: center; gap: var(--space-2); }
.transcript-content pre {
  white-space: pre-wrap;
  word-break: break-word;
  font-family: var(--font-sans);
  line-height: 1.65;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
}
.transcript-content mark {
  background: #FEF3C7;
  color: inherit;
  border-radius: 3px;
}

/* ---------------------------------------------------------------
 * Modal (delete confirm)
 * ----------------------------------------------------------- */
.modal-scrim {
  position: fixed;
  inset: 0;
  background: var(--scrim);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-5);
  z-index: 200;
  opacity: 0;
  transition: opacity var(--motion-base) var(--ease-standard);
}
.modal-scrim.is-open { opacity: 1; }
.modal-scrim[hidden] { display: none; }

.modal {
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  max-width: 440px;
  width: 100%;
  padding: var(--space-6);
  transform: translateY(8px);
  opacity: 0;
  transition: transform var(--motion-slow) var(--ease-out-soft), opacity var(--motion-slow) var(--ease-out-soft);
}
.modal-scrim.is-open .modal { transform: translateY(0); opacity: 1; }

.modal h2 { margin-bottom: var(--space-3); }
.modal p { color: var(--color-text-muted); }
.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

@media (max-width: 640px) {
  .modal-scrim { align-items: flex-end; padding: 0; }
  .modal {
    max-width: none;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    transform: translateY(100%);
  }
  .modal-scrim.is-open .modal { transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  .modal-scrim, .modal { transition: none; }
}

/* ---------------------------------------------------------------
 * Breadcrumb
 * ----------------------------------------------------------- */
.breadcrumb {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}
.breadcrumb a { color: var(--color-text-muted); text-decoration: underline; }
.breadcrumb [aria-current="page"] { color: var(--color-heading); font-weight: 500; }

/* ---------------------------------------------------------------
 * Empty state
 * ----------------------------------------------------------- */
.empty-state {
  text-align: center;
  padding: var(--space-12) var(--space-6);
  border: 1px dashed var(--color-border-strong);
  border-radius: var(--radius-lg);
  background: var(--color-bg-alt);
}
.empty-state .empty-icon {
  width: 48px; height: 48px;
  margin: 0 auto var(--space-4);
  color: var(--color-text-muted);
}
.empty-state h2, .empty-state h3 { margin-bottom: var(--space-2); }
.empty-state p { color: var(--color-text-muted); max-width: 44ch; margin-inline: auto; margin-bottom: var(--space-6); }

/* ---------------------------------------------------------------
 * Section header (eyebrow + heading + subhead)
 * ----------------------------------------------------------- */
.eyebrow {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}
.section-header { margin-bottom: var(--space-10); }
.section-header.centered { text-align: center; max-width: 62ch; margin-inline: auto; margin-bottom: var(--space-10); }
.section-header p.lead { font-size: var(--text-lg); color: var(--color-text-muted); }

/* ---------------------------------------------------------------
 * Table (comparison table, admin tables)
 * ----------------------------------------------------------- */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.data-table {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.data-table th, .data-table td {
  text-align: left;
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border);
  font-size: var(--text-sm);
}
.data-table thead th {
  background: var(--color-bg-alt);
  color: var(--color-heading);
  font-weight: 600;
}
.data-table tbody tr:last-child td { border-bottom: none; }
.data-table td.col-highlight, .data-table th.col-highlight { background: var(--color-primary-soft); }

/* ---------------------------------------------------------------
 * Icons
 * ----------------------------------------------------------- */
.icon { width: 20px; height: 20px; flex: none; }
.icon-sm { width: 16px; height: 16px; }
.icon-lg { width: 24px; height: 24px; }
.icon-xl { width: 40px; height: 40px; }