/* ============================================================
   COMPONENTS.CSS — Nav, Footer, Cards, Shared UI
   ============================================================ */

/* ── Site Header / Nav ──────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: oklch(from var(--color-bg) l c h / 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-divider);
  transition: transform var(--transition-base), box-shadow var(--transition-base),
              background var(--transition-slow);
}

.site-header--hidden {
  transform: translateY(-100%);
}

.site-header--scrolled {
  box-shadow: var(--shadow-sm);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
  flex-shrink: 0;
}

.nav__logo-mark {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

.nav__logo-text {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  list-style: none;
}

.nav__links a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  letter-spacing: 0.01em;
  transition: color var(--transition-fast);
  position: relative;
}

.nav__links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-primary);
  transition: width var(--transition-base);
}

.nav__links a:hover,
.nav__links a[aria-current="page"] {
  color: var(--color-text);
}

.nav__links a:hover::after,
.nav__links a[aria-current="page"]::after {
  width: 100%;
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  transition: color var(--transition-fast), background var(--transition-fast);
}

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

.nav__mobile-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  color: var(--color-text-muted);
  border-radius: var(--radius-md);
}

.nav__mobile-toggle:hover {
  background: var(--color-surface-dynamic);
  color: var(--color-text);
}

@media (max-width: 768px) {
  .nav__links {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    min-height: 100dvh;
    padding: 72px var(--gutter) var(--space-8);
    background: var(--color-bg);
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    gap: 0;
    border-top: 1px solid var(--color-border);
    z-index: 200;
    overflow-y: auto;
    box-sizing: border-box;
  }

  .nav__links.is-open {
    display: flex;
  }

  .nav__links li {
    width: 100%;
    border-bottom: 1px solid var(--color-divider);
  }

  .nav__links a {
    display: block;
    padding-block: var(--space-5);
    font-size: var(--text-base);
    color: var(--color-text);
  }

  .nav__links a::after { display: none; }

  .nav__mobile-toggle {
    display: flex;
  }
}

/* ── Footer ─────────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--color-divider);
  padding-block: var(--space-12) var(--space-8);
  margin-top: var(--space-24);
}

.footer__inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-8);
  align-items: end;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.footer__left {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__name {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  letter-spacing: -0.02em;
}

.footer__tagline {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  max-width: 45ch;
  line-height: 1.55;
}

.footer__links {
  display: flex;
  gap: var(--space-5);
  margin-top: var(--space-4);
  flex-wrap: wrap;
}

.footer__links a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

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

.footer__right {
  text-align: right;
}

.footer__copy {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

@media (max-width: 600px) {
  .footer__inner {
    grid-template-columns: 1fr;
  }
  .footer__right {
    text-align: left;
  }
}

/* ── Work Cards ─────────────────────────────────────────────── */
.work-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space-6);
}

.work-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow var(--transition-base), transform var(--transition-base),
              border-color var(--transition-base);
  position: relative;
}

.work-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  border-color: var(--color-text-faint);
}

.work-card--featured {
  grid-column: span 7;
}

.work-card--secondary {
  grid-column: span 5;
}

.work-card--full {
  grid-column: span 12;
  display: grid;
  grid-template-columns: 1fr 1fr;
}

@media (max-width: 900px) {
  .work-card--featured,
  .work-card--secondary,
  .work-card--full {
    grid-column: span 12;
  }
  .work-card--full {
    grid-template-columns: 1fr;
  }
}

.work-card__image {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  display: block;
}

.work-card--full .work-card__image {
  aspect-ratio: auto;
  height: 100%;
}

.work-card__body {
  padding: var(--space-8);
}

.work-card__tag {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}

.work-card__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: var(--space-4);
  color: var(--color-text);
}

.work-card__desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: var(--space-6);
}

.work-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.tag {
  display: inline-flex;
  align-items: center;
  font-size: var(--text-xs);
  font-weight: 500;
  padding: 0.2em 0.65em;
  border-radius: var(--radius-full);
  background: var(--color-surface-offset);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

.work-card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
  transition: gap var(--transition-fast);
}

.work-card__link:hover {
  gap: var(--space-3);
  color: var(--color-primary-hover);
}

/* ── Case Study Detail Sections ──────────────────────────────── */
.cs-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-16);
  align-items: start;
}

@media (max-width: 768px) {
  .cs-grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
}

.cs-meta {
  position: sticky;
  top: calc(60px + var(--space-8));
}

.cs-meta__item {
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--color-divider);
}

.cs-meta__item:last-child {
  border-bottom: none;
}

.cs-meta__label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: var(--space-2);
}

.cs-meta__value {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ── Journey / Timeline ─────────────────────────────────────── */
.journey-strip {
  display: flex;
  align-items: stretch;
  gap: 0;
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.journey-stop {
  flex: 1;
  padding: var(--space-8) var(--space-6);
  position: relative;
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  transition: background var(--transition-base);
}

.journey-stop:last-child {
  border-right: none;
}

.journey-stop:hover {
  background: var(--color-surface-2);
}

.journey-stop__icon {
  font-size: 1.4rem;
  margin-bottom: var(--space-3);
  display: block;
}

.journey-stop__city {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-2);
}

.journey-stop__years {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}

.journey-stop__detail {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

.journey-arrow {
  display: flex;
  align-items: center;
  padding: var(--space-2);
  color: var(--color-text-faint);
  font-size: 0.85rem;
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  flex-shrink: 0;
}

@media (max-width: 768px) {
  .journey-strip {
    flex-direction: column;
  }
  .journey-stop {
    border-right: none;
    border-bottom: 1px solid var(--color-border);
  }
  .journey-stop:last-child { border-bottom: none; }
  .journey-arrow {
    display: none;
  }
}

/* ── Writing / Note Cards ────────────────────────────────────── */
.notes-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.note-item {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: var(--space-8);
  padding: var(--space-7) 0;
  border-bottom: 1px solid var(--color-divider);
  text-decoration: none;
  color: inherit;
  align-items: baseline;
  transition: opacity var(--transition-fast);
}

.note-item:first-child {
  border-top: 1px solid var(--color-divider);
}

.note-item:hover {
  opacity: 0.75;
}

.note-item:hover .note-item__title {
  color: var(--color-primary);
}

.note-item__date {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  font-weight: 500;
  letter-spacing: 0.04em;
  padding-top: 0.2em;
}

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

.note-item__tag {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.note-item__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.2;
  transition: color var(--transition-fast);
}

.note-item__excerpt {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  max-width: 60ch;
}

@media (max-width: 600px) {
  .note-item {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }
}

/* ── Adventure Cards ─────────────────────────────────────────── */
.adventures-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-6);
}

.adventure-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.adventure-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.adventure-card__image {
  width: 100%;
  aspect-ratio: 3/2;
  object-fit: cover;
}

.adventure-card__body {
  padding: var(--space-6);
}

.adventure-card__location {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: var(--space-2);
}

.adventure-card__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-3);
}

.adventure-card__note {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.6em 1.4em;
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.01em;
  border: 1px solid transparent;
  transition: background var(--transition-fast), color var(--transition-fast),
              border-color var(--transition-fast), box-shadow var(--transition-fast);
  cursor: pointer;
}

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

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

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

.btn--ghost:hover {
  background: var(--color-surface-dynamic);
  border-color: var(--color-text-faint);
  color: var(--color-text);
}

/* ── Section Heading Pattern ─────────────────────────────────── */
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: var(--space-10);
  gap: var(--space-6);
  flex-wrap: wrap;
}

.section-head__left {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1.05;
  color: var(--color-text);
}

/* ── Divider ─────────────────────────────────────────────────── */
.divider {
  border: none;
  border-top: 1px solid var(--color-divider);
  margin: 0;
}

/* ── Page Hero ───────────────────────────────────────────────── */
.page-hero {
  padding-block: clamp(var(--space-12), 8vw, var(--space-24)) var(--space-12);
  border-bottom: 1px solid var(--color-divider);
}

.page-hero__label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: var(--space-4);
}

.page-hero__title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1.08;
  margin-bottom: var(--space-5);
  max-width: 14ch;
}

.page-hero__subtitle {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 52ch;
  line-height: 1.7;
}

/* ── Scroll animations ───────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal--delay-1 { transition-delay: 0.1s; }
.reveal--delay-2 { transition-delay: 0.2s; }
.reveal--delay-3 { transition-delay: 0.3s; }