/* Halo Brand System 1.0.0 — web component layer. Load halo.css first. */
.halo-button {
  align-items: center;
  border: 1px solid transparent;
  border-radius: var(--halo-core-radius-card, 0);
  cursor: pointer;
  display: inline-flex;
  font-family: var(--halo-font-mono);
  font-size: 0.78rem;
  font-weight: 650;
  gap: 0.65rem;
  justify-content: center;
  letter-spacing: 0.08em;
  min-height: 3rem;
  padding: 0.75rem 1.15rem;
  text-decoration: none;
  text-transform: uppercase;
  transition: background var(--motion-fast) var(--motion-ease), border-color var(--motion-fast) var(--motion-ease), color var(--motion-fast) var(--motion-ease), transform var(--motion-fast) var(--motion-ease);
}

.halo-button--primary { background: var(--halo-accent); border-color: var(--halo-accent); color: var(--halo-on-accent); }
.halo-button--secondary { background: var(--halo-ink); border-color: var(--halo-ink); color: var(--halo-dark-ink); }
.halo-button--quiet { background: transparent; border-color: var(--halo-rule-strong); color: var(--halo-ink); }
.halo-button:hover { border-color: var(--halo-accent-strong); }
.halo-button--primary:hover { background: var(--halo-accent-strong); }
.halo-button--secondary:hover, .halo-button--quiet:hover { background: var(--halo-bg-quiet); color: var(--halo-ink); }
.halo-button:active { transform: translateY(1px); }
.halo-button:disabled, .halo-button[aria-disabled="true"] { cursor: not-allowed; opacity: 0.48; }
.halo-button:focus-visible, .halo-text-link:focus-visible, .halo-nav-link:focus-visible, .halo-field input:focus-visible, .halo-field select:focus-visible, .halo-field textarea:focus-visible { outline: 3px solid var(--halo-accent); outline-offset: 3px; }

.halo-text-link {
  align-items: center;
  border-bottom: 1px solid currentColor;
  color: var(--halo-ink);
  display: inline-flex;
  font-weight: 650;
  gap: 1rem;
  padding-bottom: 0.18rem;
  text-decoration: none;
}
.halo-text-link__signal { color: var(--halo-accent-strong); }

.halo-eyebrow {
  align-items: center;
  color: var(--halo-subtle);
  display: inline-flex;
  font-family: var(--halo-font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  gap: 0.55rem;
  letter-spacing: 0.1em;
  line-height: 1.3;
  margin: 0;
  text-transform: uppercase;
}
.halo-eyebrow::before { background: var(--halo-accent); border-radius: 50%; content: ""; height: 0.5rem; width: 0.5rem; }

.halo-badge {
  border: 1px solid currentColor;
  display: inline-flex;
  font-family: var(--halo-font-mono);
  font-size: 0.64rem;
  font-weight: 650;
  letter-spacing: 0.08em;
  padding: 0.28rem 0.48rem;
  text-transform: uppercase;
}
.halo-badge--verified { color: var(--halo-success); }
.halo-badge--warning { color: var(--halo-warning); }
.halo-badge--danger { color: var(--halo-danger); }
.halo-badge--pending { color: var(--halo-subtle); }

.halo-evidence-card {
  border-top: 2px solid var(--halo-ink);
  display: grid;
  gap: 1rem;
  padding: 1.2rem 0 0;
}
.halo-evidence-card__label, .halo-evidence-card__source { color: var(--halo-subtle); font-family: var(--halo-font-mono); font-size: 0.66rem; letter-spacing: 0.08em; text-transform: uppercase; }
.halo-evidence-card__value { color: var(--halo-ink); font-size: clamp(2rem, 4vw, 4.5rem); font-weight: 540; letter-spacing: -0.05em; line-height: 0.95; }
.halo-evidence-card__interpretation { color: var(--halo-muted); margin: 0; max-width: 48ch; }
.halo-evidence-card__source { border-top: 1px solid var(--halo-rule); padding-top: 0.8rem; }

.halo-field { display: grid; gap: 0.55rem; }
.halo-field__label { color: var(--halo-ink); display: flex; font-weight: 600; justify-content: space-between; }
.halo-field__required { color: var(--halo-subtle); font-family: var(--halo-font-mono); font-size: 0.66rem; letter-spacing: 0.08em; text-transform: uppercase; }
.halo-field input, .halo-field select, .halo-field textarea { appearance: none; background: var(--halo-bg-raised); border: 1px solid var(--halo-rule-strong); border-radius: 0; color: var(--halo-ink); font: inherit; min-height: 3.25rem; padding: 0.85rem 0.95rem; width: 100%; }
.halo-field input[aria-invalid="true"], .halo-field select[aria-invalid="true"], .halo-field textarea[aria-invalid="true"] { border-color: var(--halo-danger); }
.halo-field__help { color: var(--halo-muted); font-size: 0.82rem; }
.halo-field__error { color: var(--halo-danger); font-size: 0.82rem; }

.halo-nav-link { align-items: baseline; color: var(--halo-muted); display: inline-flex; gap: 0.7rem; min-height: 2.75rem; padding: 0.65rem 0; text-decoration: none; }
.halo-nav-link__number { color: var(--halo-subtle); font-family: var(--halo-font-mono); font-size: 0.62rem; }
.halo-nav-link:hover, .halo-nav-link[aria-current="page"] { color: var(--halo-ink); }
.halo-nav-link[aria-current="page"] { border-bottom: 1px solid var(--halo-accent); }

.halo-motion-signature { align-items: stretch; color: var(--halo-ink); display: inline-grid; font-size: clamp(1.55rem, 2.5vw, 2.35rem); font-weight: 700; gap: 0.8rem; grid-template-columns: 3px auto; line-height: 1; }
.halo-motion-signature__line { background: var(--halo-accent); transform-origin: top; }
.halo-motion-signature__copy { display: grid; gap: 0.12em; }

@media (prefers-reduced-motion: no-preference) {
  .halo-motion-signature__line { animation: halo-signature-line var(--motion-state) var(--motion-ease) both; }
  .halo-motion-signature__copy span { animation: halo-signature-copy var(--halo-core-duration-standard) var(--motion-ease) both; }
  .halo-motion-signature__copy span:last-child { animation-delay: 120ms; }
}

@keyframes halo-signature-line { from { transform: scaleY(0); } to { transform: scaleY(1); } }
@keyframes halo-signature-copy { from { opacity: 0; transform: translateY(0.25rem); } to { opacity: 1; transform: none; } }

@media (prefers-reduced-motion: reduce) {
  .halo-button, .halo-motion-signature__line, .halo-motion-signature__copy span { animation: none; transition: none; }
}