/* =============================================================================
   components.css — Reusable UI components.
   Buttons, brand, nav links, cards, badges, forms, banner, states, utilities.
   ============================================================================= */

/* ---- Brand ---- */
.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-weight: var(--fw-bold);
  font-size: var(--fs-md);
  color: var(--color-text);
}

.brand__mark {
  display: inline-grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-2));
  color: var(--color-bg);
  font-weight: var(--fw-bold);
}

.brand__accent {
  color: var(--color-accent);
}

.brand__logo {
  display: block;
  height: 2.25rem;
  width: auto;
}

/* ---- Nav links ---- */
.nav__link {
  color: var(--color-text-muted);
  font-weight: var(--fw-medium);
  font-size: var(--fs-sm);
  transition: color var(--transition-fast);
}

.nav__link:hover,
.nav__link[aria-current='page'] {
  color: var(--color-text);
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  transition:
    transform var(--transition-fast),
    box-shadow var(--transition-base),
    background-color var(--transition-fast);
  text-align: center;
}

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

.btn--primary {
  background: var(--color-accent);
  color: var(--color-bg);
}

.btn--primary:hover {
  background: var(--color-accent-strong);
  box-shadow: var(--glow-accent);
}

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

.btn--ghost:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

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

.btn:disabled,
.btn[aria-disabled='true'] {
  opacity: 0.55;
  cursor: not-allowed;
  pointer-events: none;
}

/* ---- Cards ---- */
.card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition:
    border-color var(--transition-base),
    transform var(--transition-base),
    box-shadow var(--transition-base);
  height: 100%;
}

a.card:hover,
.card--interactive:hover {
  border-color: var(--color-accent);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.card__icon {
  display: inline-grid;
  place-items: center;
  width: 3rem;
  height: 3rem;
  font-size: var(--fs-lg);
  border-radius: var(--radius-md);
  background: var(--color-info-bg);
  border: 1px solid var(--color-border);
}

.card__title {
  font-size: var(--fs-md);
  font-weight: var(--fw-semibold);
}

.card__text {
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
  flex-grow: 1;
}

.card__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-2);
}

.card__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  color: var(--color-accent);
  font-weight: var(--fw-semibold);
  font-size: var(--fs-sm);
}

/* ---- Badges / status pills ---- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0.2rem var(--space-3);
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  font-family: var(--font-mono);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  background: var(--color-bg-elevated);
}

.badge--live {
  color: var(--color-success);
  background: var(--color-success-bg);
  border-color: transparent;
}

.badge--beta {
  color: var(--color-warning);
  background: var(--color-warning-bg);
  border-color: transparent;
}

.badge--building {
  color: var(--color-accent);
  background: var(--color-info-bg);
  border-color: transparent;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  list-style: none;
  padding: 0;
  margin: 0;
}

.tag {
  font-size: var(--fs-xs);
  font-family: var(--font-mono);
  color: var(--color-text-faint);
  padding: 0.15rem var(--space-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

/* ---- Forms ---- */
.form {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.field__label {
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
}

.field__label .req {
  color: var(--color-accent);
}

.field__input,
.field__textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  color: var(--color-text);
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.field__input::placeholder,
.field__textarea::placeholder {
  color: var(--color-text-faint);
}

.field__input:focus,
.field__textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.field__textarea {
  resize: vertical;
  min-height: 8rem;
}

.field__input[aria-invalid='true'],
.field__textarea[aria-invalid='true'] {
  border-color: var(--color-danger);
}

.field__error {
  font-size: var(--fs-sm);
  color: var(--color-danger);
  min-height: 1.2em;
}

/* Inline form feedback (success / failure after submit) */
.form-status {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--fs-sm);
}

.form-status--success {
  color: var(--color-success);
  background: var(--color-success-bg);
}

.form-status--error {
  color: var(--color-danger);
  background: rgba(248, 113, 113, 0.12);
}

.form-status[hidden] {
  display: none;
}

/* ---- Spinner / loading ---- */
.spinner {
  width: 1.1em;
  height: 1.1em;
  border: 2px solid var(--color-bg);
  border-top-color: transparent;
  border-radius: var(--radius-full);
  animation: spin 0.7s linear infinite;
  display: inline-block;
}

/* The hidden attribute must win over the display rule above (otherwise the
   spinner shows at rest). Applies to the submit-button spinner before submit. */
.spinner[hidden] {
  display: none;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@media (prefers-reduced-motion: reduce) {
  .spinner {
    animation-duration: 2s;
  }
}

/* ---- Generic state blocks (loading / empty / error) ---- */
.state {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--space-7) var(--space-4);
  border: 1px dashed var(--color-border-strong);
  border-radius: var(--radius-lg);
  color: var(--color-text-muted);
}

.state__title {
  font-weight: var(--fw-semibold);
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.state--error {
  border-color: var(--color-danger);
  color: var(--color-danger);
}

.state[hidden] {
  display: none;
}

/* ---- Cookie consent banner ---- */
.cookie-banner {
  position: fixed;
  inset-inline: var(--space-4);
  bottom: var(--space-4);
  z-index: var(--z-banner);
  margin-inline: auto;
  max-width: var(--container-narrow);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.cookie-banner[hidden] {
  display: none;
}

.cookie-banner__text {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
}

.cookie-banner__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

@media (min-width: 40rem) {
  .cookie-banner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

/* ---- Prose helpers ---- */
.lead {
  font-size: var(--fs-md);
  color: var(--color-text-muted);
}

.stack > * + * {
  margin-top: var(--space-4);
}

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

.mono {
  font-family: var(--font-mono);
}

.mt-4 {
  margin-top: var(--space-4);
}

/* Left-align hero actions (used on detail pages) */
.hero__actions--start {
  justify-content: flex-start;
}

/* ---- Accessibility: visually hidden ---- */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ---- Back link ---- */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
  margin-bottom: var(--space-4);
}

.back-link:hover {
  color: var(--color-accent);
}

/* ---- Feature list (detail pages) ---- */
.feature-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.feature-list li {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  color: var(--color-text-muted);
}

.feature-list li::before {
  content: '▹';
  color: var(--color-accent);
  font-weight: var(--fw-bold);
}

/* ---- Honeypot (anti-spam) ----
   Visually and assistively hidden, but still present in the DOM and submitted
   with the form. Real users never see or fill it; bots that auto-fill inputs
   will, and that non-empty value is dropped client-side and in the flow.
   Not display:none — some bots skip display:none fields. */
.hp-field {
  position: absolute !important;
  left: -9999px !important;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
}

/* Belt-and-suspenders: also push the input itself off-screen so the field
   stays hidden even if .hp-field's positioning is somehow overridden.
   Not display:none / hidden — that would stop bots filling it. */
.hp-field input,
.hp-field label {
  position: absolute !important;
  left: -9999px !important;
}