/* TOGOPEPTIDE — Components
   Layer 4 of 5 · UI primitives (buttons, cards, badges, forms, sections)
   Depends on: tokens.css + base.css */

/* ─── Buttons ─────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0 var(--space-5);
  min-height: 44px;
  border-radius: var(--radius-pill);
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.02em;
  text-align: center;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out),
              color var(--dur-fast) var(--ease-out),
              transform var(--dur-fast) var(--ease-out);
  white-space: nowrap;
}

.btn:hover  { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: var(--color-accent);
  color: #fff;
  box-shadow: 0 8px 24px var(--color-accent-glow);
}

.btn--primary:hover {
  background: var(--color-accent-hover);
  color: #fff;
}

.btn--secondary {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border-strong);
}

.btn--secondary:hover {
  border-color: var(--color-text);
  color: var(--color-text);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text-soft);
}

.btn--ghost:hover {
  color: var(--color-text);
  background: var(--color-surface);
}

.btn--sm {
  padding: 0 var(--space-4);
  min-height: 36px;
  font-size: var(--text-xs);
}

.btn--lg {
  padding: 0 var(--space-6);
  min-height: 52px;
  font-size: var(--text-base);
}

.btn--block {
  width: 100%;
}

/* ─── Card ────────────────────────────────────────────── */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  transition: border-color var(--dur-fast) var(--ease-out),
              transform var(--dur-base) var(--ease-out);
}

.card--interactive {
  cursor: pointer;
}

.card--interactive:hover {
  border-color: var(--color-border-strong);
  transform: translateY(-2px);
}

.card--raised {
  background: var(--color-surface-raised);
  box-shadow: var(--shadow-md);
}

.card--media {
  padding: 0;
  overflow: hidden;
}

.card--media .card__media {
  aspect-ratio: 4 / 3;
  background: var(--color-bg-elevated);
  display: flex;
  align-items: center;
  justify-content: center;
}

.card--media .card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card--media .card__body {
  padding: var(--space-5);
}

/* Badge overlay for compound cards — sits top-left over the media slot */
.card--media .card__media {
  position: relative;
}

.card__badge {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
  z-index: 2;
}

/* Badge stack — co-locates stock pill + brand badge in one place and
   cross-fades between them every ~3s (driven by category.js / compound.js
   rotator). One item = stays put; two items = auto-rotation. */
.card-badge-stack {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
  z-index: 2;
  display: grid;
  pointer-events: none;
}
.card-badge-stack > * {
  grid-area: 1 / 1;
  transition: opacity 500ms cubic-bezier(0.22, 1, 0.36, 1),
              transform 500ms cubic-bezier(0.22, 1, 0.36, 1);
  will-change: opacity, transform;
}
.card-badge-stack > [data-stack-hidden="true"] {
  opacity: 0;
  transform: translateY(-4px);
}
/* When a stack holds only one item (single child with data-stack-item="0"
   and no siblings), no fade needed — make it fully visible. */
.card-badge-stack > [data-stack-item] { opacity: 1; }
/* Override once the rotator applies the hidden attribute. */
.card-badge-stack > [data-stack-item][data-stack-hidden="true"] { opacity: 0; }

/* Override .card__badge absolute positioning inside the stack — grid
   overlay takes care of it. */
.card-badge-stack .card__badge {
  position: static;
  top: auto;
  left: auto;
}

@media (prefers-reduced-motion: reduce) {
  .card-badge-stack > * { transition: none; }
}

.card__eyebrow {
  color: var(--color-accent);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin: 0 0 var(--space-2);
}

.card__title {
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  margin: 0 0 var(--space-2);
  line-height: var(--leading-snug);
}

.card__body-text {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
  margin: 0;
}

.card__footer {
  margin-top: var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

/* ─── Badge + pill ────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 2px var(--space-2);
  border-radius: var(--radius-sm);
  font-size: var(--text-2xs);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: var(--color-accent-soft);
  color: var(--color-accent-hover);
  border: 1px solid var(--color-border-accent);
}

.badge--neutral {
  background: var(--color-surface);
  color: var(--color-text-soft);
  border-color: var(--color-border);
}

.pill {
  display: inline-flex;
  align-items: center;
  padding: 4px var(--space-3);
  border-radius: var(--radius-pill);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  background: rgba(255, 255, 255, 0.05);
  color: var(--color-text-soft);
  border: 1px solid var(--color-border);
}

/* ─── Form primitives ─────────────────────────────────── */
.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.field__label {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-soft);
}

.field__hint {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.input {
  width: 100%;
  min-height: 44px;
  padding: 0 var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: var(--text-base);
  transition: border-color var(--dur-fast) var(--ease-out),
              background var(--dur-fast) var(--ease-out);
}

.input:hover {
  border-color: var(--color-border-strong);
}

.input:focus {
  outline: none;
  border-color: var(--color-accent);
  background: var(--color-surface-raised);
}

.input::placeholder {
  color: var(--color-text-faint);
}

/* ─── Section (page rhythm) ───────────────────────────── */
.section {
  padding: var(--space-7) 0;
}

@media (min-width: 768px) {
  .section {
    padding: var(--space-8) 0;
  }
}

.section__head {
  margin-bottom: var(--space-6);
  max-width: 60ch;
}

.section__eyebrow {
  color: var(--color-accent);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 0 0 var(--space-2);
}

.section__title {
  font-size: var(--text-3xl);
  line-height: var(--leading-tight);
  margin: 0 0 var(--space-3);
}

.section__lead {
  color: var(--color-text-muted);
  font-size: var(--text-lg);
  line-height: var(--leading-normal);
  margin: 0;
}

/* ─── Breadcrumb ──────────────────────────────────────── */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin: 0 0 var(--space-4);
}

.breadcrumb a {
  color: var(--color-text-muted);
}

.breadcrumb a:hover {
  color: var(--color-text);
}

.breadcrumb__sep {
  color: var(--color-text-faint);
}

.breadcrumb__current {
  color: var(--color-text);
}