/* ============================================
   COMPONENTS — buttons, cards, dividers
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  padding: 0.85em 1.6em;
  border-radius: var(--radius);
  font-size: var(--fs-small);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  text-decoration: none;
  border: 1px solid transparent;
  transition: background var(--duration) var(--ease), color var(--duration) var(--ease), border-color var(--duration) var(--ease);
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-surface);
}
.btn--primary:hover { background: #3c574f; }

.btn--ghost {
  background: transparent;
  color: var(--color-ink);
  border-color: var(--color-line);
}
.btn--ghost:hover { border-color: var(--color-accent); color: var(--color-accent); }

.btn--sm {
  padding: 0.45em 0.9em;
  font-size: 0.75rem;
  white-space: nowrap;
}

.eyebrow {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-small);
  color: var(--color-warm);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: var(--space-2);
}

@media (max-width: 560px) {
  .btn {
    width: 100%;
    justify-content: center;
  }
}

.card {
  background: var(--color-surface);
  border: var(--border);
  border-radius: var(--radius);
  padding: var(--space-3);
}

.card h3 { margin-bottom: var(--space-1); }
.card p { margin-bottom: 0; }

.divider {
  border: none;
  border-top: var(--border);
  margin: var(--space-4) 0;
}

.tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-ink-soft);
  background: var(--color-bg-alt);
  border-radius: 999px;
  padding: 0.25em 0.75em;
}

/* ---- Theme toggle ---- */
.theme-toggle {
  margin-left: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.1rem;
  height: 2.1rem;
  border-radius: var(--radius);
  background: none;
  border: var(--border);
  color: var(--color-ink-soft);
  cursor: pointer;
  transition: color var(--duration) var(--ease), border-color var(--duration) var(--ease);
  flex-shrink: 0;
}
.theme-toggle:hover { color: var(--color-accent); border-color: var(--color-accent); }

.theme-toggle__sun  { display: none; }
.theme-toggle__moon { display: block; }
[data-theme="dark"] .theme-toggle__sun  { display: block; }
[data-theme="dark"] .theme-toggle__moon { display: none; }

/* ---- Psychology Today badge (fixed bottom-right) ---- */
.pt-badge {
  position: fixed;
  bottom: var(--space-3);
  right: var(--space-3);
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.55rem 1rem 0.55rem 0.55rem;
  background: var(--color-surface);
  border: var(--border);
  border-radius: 999px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.12);
  text-decoration: none;
  color: var(--color-ink);
  transition: box-shadow var(--duration) var(--ease), transform var(--duration) var(--ease);
}
.pt-badge:hover {
  box-shadow: 0 8px 28px rgba(0,0,0,0.18);
  transform: translateY(-2px);
}

.pt-badge__icon {
  width: 1.8rem;
  height: 1.8rem;
  border-radius: 50%;
  background: var(--color-accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  flex-shrink: 0;
  line-height: 1;
}

.pt-badge__body {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
  gap: 0.05rem;
}

.pt-badge__label {
  font-size: 0.68rem;
  color: var(--color-ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  font-family: var(--font-mono);
}

.pt-badge__name {
  font-size: var(--fs-small);
  font-weight: 500;
}

@media (max-width: 480px) {
  .pt-badge__body { display: none; }
  .pt-badge { padding: 0.55rem; }
}