/* ==========================================================================
   components.css — Buttons, cards, badges, nav, header, footer, forms
   Depends on tokens.css, layout.css.
   ========================================================================== */

/* ==========================================================================
   Skip link
   ========================================================================== */
.skip-link {
  position: absolute;
  left: var(--space-4);
  top: var(--space-2);
  z-index: var(--z-skiplink);
  transform: translateY(-150%);
  padding: var(--space-3) var(--space-5);
  background-color: var(--color-primary);
  color: var(--color-primary-contrast);
  border-radius: var(--radius-md);
  font-weight: var(--weight-semibold);
  transition: transform var(--transition-interactive);
}

.skip-link:focus-visible {
  transform: translateY(0);
  color: var(--color-primary-contrast);
}

/* ==========================================================================
   Buttons (min 44x44px touch targets; no gradients)
   ========================================================================== */
.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-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  line-height: 1;
  text-align: center;
  border: 1px solid transparent;
  transition: background-color var(--transition-interactive),
    border-color var(--transition-interactive),
    color var(--transition-interactive),
    transform var(--transition-interactive);
}

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

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

.btn--primary:hover {
  background-color: var(--color-primary-hover);
  color: var(--color-primary-contrast);
}

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

.btn--secondary:hover {
  background-color: var(--color-surface-2);
  color: var(--color-text);
  border-color: var(--color-primary);
}

.btn--ghost {
  background-color: transparent;
  color: var(--color-primary);
  padding-inline: var(--space-2);
}

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

.btn--lg {
  min-height: 52px;
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-md);
}

/* ==========================================================================
   Site header + primary navigation
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background-color: color-mix(in oklab, var(--color-bg) 88%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: var(--header-height);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-weight: var(--weight-bold);
  font-size: var(--text-lg);
  color: var(--color-text);
  letter-spacing: var(--tracking-tight);
}

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

.brand__mark {
  color: var(--color-primary);
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.primary-nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.primary-nav__link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  font-weight: var(--weight-medium);
  transition: color var(--transition-interactive),
    background-color var(--transition-interactive);
}

.primary-nav__link:hover {
  color: var(--color-text);
  background-color: var(--color-surface-2);
}

.primary-nav__link[aria-current="page"] {
  color: var(--color-primary);
  background-color: var(--color-primary-soft);
}

/* ---- Header action buttons (theme toggle + hamburger) ------------------- */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  background-color: var(--color-surface);
  transition: color var(--transition-interactive),
    border-color var(--transition-interactive),
    background-color var(--transition-interactive);
}

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

.icon-btn svg {
  width: 20px;
  height: 20px;
}

/* Theme toggle: show one icon at a time depending on resolved theme. */
.theme-toggle .icon-sun { display: none; }
.theme-toggle .icon-moon { display: block; }
[data-theme="dark"] .theme-toggle .icon-sun { display: block; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }

.nav-toggle {
  display: none;
}

/* ==========================================================================
   Mobile navigation
   ========================================================================== */
@media (max-width: 56rem) {
  .nav-toggle {
    display: inline-flex;
  }

  .primary-nav {
    position: fixed;
    inset: var(--header-height) 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-2);
    padding: var(--space-4) var(--gutter) var(--space-8);
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-interactive),
      transform var(--transition-interactive),
      visibility var(--transition-interactive);
  }

  .primary-nav.nav-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .primary-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-1);
  }

  .primary-nav__link {
    width: 100%;
  }
}

/* ==========================================================================
   Cards
   ========================================================================== */
.card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-6);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition-interactive),
    transform var(--transition-interactive),
    box-shadow var(--transition-interactive);
}

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

.card__title {
  font-size: var(--text-lg);
}

.card__text {
  color: var(--color-text-muted);
  font-size: var(--text-base);
}

.card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  color: var(--color-primary);
}

.card__icon svg {
  width: 28px;
  height: 28px;
}

.card__meta {
  margin-top: auto;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-faint);
}

/* ==========================================================================
   Badges / tags
   ========================================================================== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  background-color: var(--color-surface-2);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  line-height: 1.4;
}

.badge--accent {
  background-color: var(--color-primary-soft);
  border-color: transparent;
  color: var(--color-primary);
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  padding-block: clamp(var(--space-16), 9vw, var(--space-32));
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.hero__title {
  font-size: var(--text-hero);
  max-width: 16ch;
}

.hero__title .accent { color: var(--color-primary); }

.hero__subtitle {
  margin-top: var(--space-6);
  max-width: 56ch;
  font-size: var(--text-md);
  color: var(--color-text-muted);
}

.hero__actions {
  margin-top: var(--space-8);
}

/* ==========================================================================
   Avatar / portrait
   ========================================================================== */
.portrait {
  width: 100%;
  max-width: 360px;
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  object-fit: cover;
  box-shadow: var(--shadow-lg);
}

/* ==========================================================================
   CTA banner
   ========================================================================== */
.cta-banner {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6);
  align-items: center;
  justify-content: space-between;
  padding: clamp(var(--space-8), 4vw, var(--space-12));
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
}

.cta-banner__title {
  font-size: var(--text-xl);
  max-width: 28ch;
}

/* ==========================================================================
   Forms
   ========================================================================== */
.form {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  max-width: var(--content-narrow);
}

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

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

.field__hint {
  font-size: var(--text-sm);
  color: var(--color-text-faint);
}

/* Form submission status messages (contact.js) */
.form-status {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  font-size: var(--text-sm);
}

.form-status--success {
  color: var(--color-primary);
  background-color: var(--color-primary-soft);
  border-color: transparent;
}

.form-status--error {
  color: var(--color-text);
  background-color: var(--color-surface-2);
}

.input,
.textarea {
  width: 100%;
  min-height: 44px;
  padding: var(--space-3) var(--space-4);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  color: var(--color-text);
  transition: border-color var(--transition-interactive),
    box-shadow var(--transition-interactive);
}

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

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

.input:focus-visible,
.textarea:focus-visible {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: var(--shadow-focus);
}

/* ==========================================================================
   Definition / detail lists (about, contact)
   ========================================================================== */
.detail-list {
  display: grid;
  gap: var(--space-4);
}

.detail-list__row {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.detail-list__term {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-text-faint);
}

/* ==========================================================================
   Timeline (experience)
   ========================================================================== */
.timeline {
  display: grid;
  gap: var(--space-8);
  border-left: 2px solid var(--color-border);
  padding-left: var(--space-6);
}

.timeline__item {
  position: relative;
}

.timeline__item::before {
  content: "";
  position: absolute;
  left: calc(-1 * var(--space-6) - 6px);
  top: 6px;
  width: 10px;
  height: 10px;
  border-radius: var(--radius-full);
  background-color: var(--color-primary);
}

.timeline__period {
  font-size: var(--text-sm);
  color: var(--color-primary);
  font-weight: var(--weight-semibold);
}

/* ==========================================================================
   Social cards
   ========================================================================== */
.social-cards {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  list-style: none;
  padding: 0;
  margin: 0;
}

.social-card {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  min-height: 44px;
  padding: var(--space-4);
  background-color: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  transition: border-color var(--transition-interactive),
    background-color var(--transition-interactive);
}

.social-card:hover {
  border-color: var(--color-primary);
  background-color: var(--color-surface);
  color: var(--color-text);
}

.social-card__icon {
  display: inline-flex;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  color: var(--color-primary);
}

.social-card__icon svg {
  width: 22px;
  height: 22px;
}

.social-card__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  min-width: 0;
}

.social-card__name {
  font-weight: var(--weight-semibold);
  font-size: var(--text-base);
  line-height: 1.2;
}

.social-card__handle {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  margin-top: var(--space-24);
  border-top: 1px solid var(--color-border);
  background-color: var(--color-surface);
}

.site-footer__inner {
  display: grid;
  gap: var(--space-8);
  padding-block: var(--space-12);
  grid-template-columns: 1fr;
}

@media (min-width: 48rem) {
  .site-footer__inner {
    grid-template-columns: 1.4fr 1fr 1fr;
  }
}

.footer-col__title {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: var(--space-4);
}

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

.footer-links a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  color: var(--color-text-muted);
}

.footer-links a:hover { color: var(--color-primary); }

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: space-between;
  align-items: center;
  padding-block: var(--space-6);
  border-top: 1px solid var(--color-border);
  color: var(--color-text-faint);
  font-size: var(--text-sm);
}