/*
 * components.css — visual styling for every section, in the "modern & bold"
 * system bound by the seven D-16 guardrails: the hero headline is the single bold
 * move per view; surfaces stay neutral; the indigo accent covers a small share of
 * the surface (interactive/active states); the amber secondary appears once, on the
 * hero eyebrow (D-18). All values reference tokens.css — no magic numbers (D-16 #3).
 * Both themes resolve automatically through the light-dark() color tokens.
 */

/* ===== Header / nav (D-11) ============================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  border-bottom: 1px solid var(--color-border);
  background-color: color-mix(in srgb, var(--color-bg) 82%, transparent);
  backdrop-filter: blur(10px);
}

/* Opaque fallback where backdrop-filter is unsupported (keeps text legible). */
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .site-header {
    background-color: var(--color-bg);
  }
}

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

.site-header__brand {
  margin-inline-end: auto;
  color: var(--color-text);
  font-size: var(--text-lg);
  font-weight: var(--weight-display);
  letter-spacing: var(--tracking-tight);
  text-decoration: none;
}

.primary-nav__list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3xs);
  align-items: center;
}

.primary-nav__link {
  position: relative;
  display: inline-block;
  padding: var(--space-2xs) var(--space-xs);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: color var(--motion-fast) var(--ease-standard);
}

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

/* Active section — aria-current set by nav.js (D-11, D-29) */
.primary-nav__link[aria-current="true"] {
  color: var(--color-accent);
  font-weight: var(--weight-semibold);
}

.primary-nav__link[aria-current="true"]::after {
  content: "";
  position: absolute;
  inset-inline: var(--space-xs);
  bottom: -1px;
  height: 2px;
  background-color: var(--color-accent);
  border-radius: var(--radius-full);
}

/* ===== Theme toggle (behavior in theme.js) ============================== */
.theme-toggle {
  display: inline-grid;
  place-items: center;
  padding: var(--space-2xs);
  font-size: var(--text-xl);
  color: var(--color-text-muted);
  background-color: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition:
    color var(--motion-fast) var(--ease-standard),
    background-color var(--motion-fast) var(--ease-standard);
}

.theme-toggle:hover {
  color: var(--color-text);
  background-color: var(--color-surface-2);
}

.theme-toggle__icon {
  width: 1em;
  height: 1em;
}

/* Theme toggle hidden without JS — it cannot function (graceful, D-30) */
.no-js .theme-toggle {
  display: none;
}

/* Show the icon for the action the toggle performs. Default (light/auto-light)
   shows the moon; dark shows the sun. Mirrors the color-scheme logic so the icon
   matches the active theme in both manual and auto modes (D-14). */
.theme-toggle__icon--sun {
  display: none;
}
.theme-toggle__icon--moon {
  display: block;
}
:root[data-theme="dark"] .theme-toggle__icon--moon {
  display: none;
}
:root[data-theme="dark"] .theme-toggle__icon--sun {
  display: block;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle__icon--moon {
    display: none;
  }
  :root:not([data-theme="light"]) .theme-toggle__icon--sun {
    display: block;
  }
}

/* ===== Buttons ========================================================== */
.button {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  padding: var(--space-2xs) var(--space-md);
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-snug);
  text-decoration: none;
  white-space: nowrap;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition:
    color var(--motion-fast) var(--ease-standard),
    background-color var(--motion-fast) var(--ease-standard),
    border-color var(--motion-fast) var(--ease-standard),
    transform var(--motion-fast) var(--ease-standard);
}

.button:hover {
  transform: translateY(-1px);
}

.button--primary {
  background-color: var(--color-accent);
  color: var(--color-on-accent);
}
.button--primary:hover {
  background-color: var(--color-accent-hover);
  color: var(--color-on-accent);
}

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

.button--sm {
  padding: var(--space-3xs) var(--space-sm);
  font-size: var(--text-sm);
}

/* ===== Section titles =================================================== */
.section__title {
  font-size: var(--text-4xl);
}

/* Short accent rule under each section title — disciplined primary accent. */
.section__title::after {
  content: "";
  display: block;
  width: var(--space-xl);
  height: var(--space-3xs);
  margin-block-start: var(--space-xs);
  background-color: var(--color-accent);
  border-radius: var(--radius-full);
}

/* ===== Hero (the one bold move, D-16 #1/#2) ============================= */
.hero__content {
  --flow-space: var(--space-sm);
  max-width: 48rem;
}

.hero__eyebrow {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  /* The single, sparing use of the secondary accent (D-18). */
  color: var(--color-secondary-text);
}

.hero__title {
  font-size: var(--text-6xl);
  font-weight: var(--weight-display);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
}

.hero__bio {
  max-width: 48ch;
  font-size: var(--text-lg);
  color: var(--color-text-muted);
}

.hero__actions {
  gap: var(--space-sm);
  margin-block-start: var(--space-md);
}

/* ===== Experience ======================================================= */
.experience {
  --flow-space: var(--space-xl);
}

.experience-group__employer {
  font-size: var(--text-xl);
  color: var(--color-text);
}

.experience-group__roles {
  --flow-space: var(--space-md);
  margin-block-start: var(--space-md);
}

.role {
  padding: var(--space-md);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: border-color var(--motion-base) var(--ease-standard);
}

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

.role__head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-2xs);
}

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

.role__dates {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  font-variant-numeric: tabular-nums;
}

.role__meta {
  display: grid;
  gap: var(--space-2xs);
  margin-block-start: var(--space-sm);
}

.role__meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2xs);
}

.role__meta dt {
  flex: 0 0 auto;
  min-width: 9ch; /* aligns values; sized to the longest label ("Languages") */
  color: var(--color-text-subtle);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
}

.role__meta dd {
  margin: 0;
  color: var(--color-text);
  font-size: var(--text-sm);
}

/* ===== Project cards ==================================================== */
.projects > li {
  display: flex;
}

.project-card {
  display: flex;
  flex-direction: column;
  width: 100%;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition:
    transform var(--motion-base) var(--ease-standard),
    box-shadow var(--motion-base) var(--ease-standard),
    border-color var(--motion-base) var(--ease-standard);
}

.project-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-lg);
}

.project-card__media {
  aspect-ratio: 350 / 233;
  background-color: var(--color-surface-2);
}

/* <picture> wrapper must fill the media box so the inner img height resolves. */
.project-card__media picture {
  display: block;
  height: 100%;
}

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

.project-card__body {
  --flow-space: var(--space-2xs);
  flex: 1;
  padding: var(--space-md);
}

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

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

.project-card__links {
  gap: var(--space-2xs);
  margin-block-start: var(--space-sm);
}

/* ===== Skills =========================================================== */
.skills {
  gap: var(--space-2xs);
}

.skill {
  display: inline-flex;
  align-items: center;
  padding: var(--space-3xs) var(--space-sm);
  color: var(--color-text);
  background-color: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
}

/* ===== Contact ========================================================== */
.contact__lead {
  max-width: 52ch;
  color: var(--color-text-muted);
  font-size: var(--text-lg);
}

.contact-links {
  gap: var(--space-sm);
  margin-block-start: var(--space-md);
}

/* ===== Footer =========================================================== */
.site-footer {
  margin-block-start: var(--space-2xl);
  padding-block: var(--space-xl);
  border-top: 1px solid var(--color-border);
}

.site-footer__copy {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

/* ===== Inline icons (D-09) ============================================== */
.icon {
  width: 1em;
  height: 1em;
  flex-shrink: 0;
}

.icon--external {
  width: 0.8em;
  height: 0.8em;
}

/* ===== Responsive: compact header (nav wraps below brand on mobile) ===== */
@media (max-width: 47.99rem) {
  .site-header__inner {
    flex-wrap: wrap;
    height: auto;
    padding-block: var(--space-2xs);
  }

  .site-header__brand {
    order: 1;
  }

  .theme-toggle {
    order: 2;
  }

  .primary-nav {
    order: 3;
    flex-basis: 100%;
  }

  .primary-nav__list {
    justify-content: center;
  }
}