/* SKYNET Travel Planner — shared site design system (Jade Horizon) */
:root {
  --foam: #f1faf7;
  --sea: #0f766e;
  --sea-deep: #042f2e;
  --sand: #d4b56a;
  --panel: #eef8f4;
  --panel-ink: #0c2422;
  --line: rgba(4, 47, 46, 0.11);
  --muted: rgba(12, 36, 34, 0.64);
  --accent: #14b8a6;
  --accent-soft: rgba(20, 184, 166, 0.14);
  --surface: rgba(255, 255, 255, 0.72);
  --surface-strong: rgba(255, 255, 255, 0.9);
  --nav-glass: rgba(4, 47, 46, 0.78);
  --shadow-soft: 0 18px 48px rgba(4, 47, 46, 0.1);
  --radius-sm: 0.55rem;
  --radius-md: 0.9rem;
  --radius-lg: 1.35rem;
  --font-display: "Fraunces", "Cormorant Garamond", Georgia, serif;
  --font-ui: "Outfit", "Noto Sans TC", "Noto Sans SC", sans-serif;
  --font-cjk: "Noto Sans TC", "Noto Sans SC", "Outfit", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-ui);
  color: var(--panel-ink);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.site-shell {
  background:
    radial-gradient(1200px 640px at 6% -12%, rgba(20, 184, 166, 0.18), transparent 58%),
    radial-gradient(900px 480px at 96% 8%, rgba(212, 181, 106, 0.14), transparent 52%),
    linear-gradient(165deg, #e4f4ef 0%, var(--panel) 42%, #e8f2ee 100%);
}

body.lang-zh-Hans,
body.lang-zh-Hant,
body[lang^="zh"] {
  font-family: var(--font-cjk);
}

a {
  color: inherit;
}

img {
  max-width: 100%;
}

/* ——— Shared marketing chrome ——— */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem clamp(1rem, 4vw, 2.5rem);
  background: var(--nav-glass);
  color: var(--foam);
  border-bottom: 1px solid rgba(241, 250, 247, 0.1);
  backdrop-filter: blur(16px) saturate(1.2);
  -webkit-backdrop-filter: blur(16px) saturate(1.2);
}

.site-nav .brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-decoration: none;
  line-height: 1;
}

.site-nav .brand img {
  width: 2.45rem;
  height: 2.45rem;
  object-fit: cover;
  border-radius: 0.45rem;
  background: #f8f8f6;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.18);
}

.site-nav .brand span {
  color: var(--sand);
  font-weight: 500;
}

.nav-links {
  display: flex;
  gap: 0.3rem;
  flex-wrap: wrap;
  align-items: center;
}

.nav-links a,
.site-nav nav > a {
  text-decoration: none;
  font: 600 0.86rem/1 var(--font-ui);
  padding: 0.5rem 0.9rem;
  border-radius: 0.7rem;
  color: rgba(241, 250, 247, 0.84);
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.nav-links a:hover,
.site-nav nav > a:hover {
  color: var(--foam);
  background: rgba(255, 255, 255, 0.1);
}

.nav-links a.is-active {
  color: var(--sea-deep);
  background: linear-gradient(135deg, #f3e2b0, var(--sand));
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  max-width: min(12rem, calc(100vw - 1.5rem));
  padding: 0.22rem 0.35rem 0.22rem 0.55rem;
  border-radius: 0.75rem;
  background: rgba(2, 24, 23, 0.45);
  border: 1px solid rgba(241, 250, 247, 0.18);
}

.lang-switch .lang-label {
  flex: 0 0 auto;
  font: 600 0.72rem/1 var(--font-ui);
  color: rgba(241, 250, 247, 0.78);
  letter-spacing: 0.03em;
  white-space: nowrap;
}

.lang-switch select {
  -webkit-appearance: menulist;
  appearance: auto;
  border: 0;
  cursor: pointer;
  width: auto;
  min-width: 5.5rem;
  max-width: 11rem;
  background: rgba(2, 24, 23, 0.35);
  color: var(--foam);
  -webkit-text-fill-color: var(--foam);
  color-scheme: dark;
  font: 500 0.82rem/1.2 var(--font-ui);
  padding: 0.35rem 0.4rem;
  border-radius: 0.55rem;
}

.lang-switch select:focus-visible {
  outline: 2px solid rgba(20, 184, 166, 0.85);
  outline-offset: 2px;
}

.lang-switch select option {
  color: #0c2422;
  background: #eef8f4;
  -webkit-text-fill-color: #0c2422;
}

footer,
footer.site-foot {
  padding: 1.75rem clamp(1rem, 4vw, 2.5rem) 2.75rem;
  color: var(--muted);
  font-size: 0.9rem;
  border-top: 1px solid var(--line);
}

footer a,
footer.site-foot a {
  color: var(--sea-deep);
  text-decoration: none;
  border-bottom: 1px solid rgba(15, 118, 110, 0.25);
}

footer a:hover,
footer.site-foot a:hover {
  color: var(--sea);
  border-bottom-color: var(--sea);
}

/* ——— Shared content primitives ——— */
.page,
main.about {
  width: min(44rem, calc(100% - 2.5rem));
  margin: 0 auto;
  padding: 3.25rem 0 4.5rem;
}

.eyebrow {
  margin: 0 0 0.75rem;
  font: 650 0.78rem/1 var(--font-ui);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--sea);
}

h1,
.page h1,
.hero h1,
.hero .brand-mark {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--sea-deep);
}

.page h1,
main.about h1 {
  margin: 0 0 1.15rem;
  font-size: clamp(2.45rem, 5.2vw, 3.55rem);
  line-height: 1.08;
}

.lede,
.about-body {
  margin: 0;
  font-size: 1.08rem;
  line-height: 1.75;
  color: rgba(12, 36, 34, 0.86);
}

.cta,
.about-actions a,
.cta-row .cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font: 650 0.92rem/1 var(--font-ui);
  padding: 0.78rem 1.2rem;
  border-radius: 0.85rem;
  border: 1px solid transparent;
  transition: transform 0.2s ease, background 0.2s ease, box-shadow 0.2s ease,
    border-color 0.2s ease, color 0.2s ease;
}

.cta,
.about-actions a.primary,
.cta-row .cta {
  background: linear-gradient(135deg, var(--sea) 0%, var(--sea-deep) 100%);
  color: var(--foam);
  box-shadow: 0 10px 28px rgba(4, 47, 46, 0.22);
}

.cta:hover,
.about-actions a.primary:hover,
.cta-row .cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 34px rgba(4, 47, 46, 0.28);
  color: var(--foam);
}

.about-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 2rem;
}

.about-actions a {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--sea-deep);
}

.about-actions a:hover {
  border-color: var(--sea);
  color: var(--sea);
}

.about-partner {
  margin: 1.15rem 0 0;
  font-size: 1.02rem;
  line-height: 1.55;
  color: var(--sea-deep);
  font-weight: 600;
}

.about-partner a {
  color: #0f766e;
  text-decoration: none;
  border-bottom: 1px solid rgba(15, 118, 110, 0.35);
}

.about-partner a:hover {
  border-bottom-color: var(--sea);
}

/* Guides */
.crumb {
  color: var(--muted);
  font-size: 0.92rem;
  margin: 0 0 1rem;
}

.page h2 {
  font-family: var(--font-display);
  font-size: 1.45rem;
  margin: 2rem 0 0.7rem;
  color: var(--sea-deep);
}

.page h3 {
  font-size: 1.05rem;
  margin: 1.25rem 0 0.4rem;
}

.guide-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fill, minmax(16rem, 1fr));
  margin: 1.5rem 0 2rem;
}

.guide-card {
  display: block;
  padding: 1.2rem 1.2rem 1.25rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  text-decoration: none;
  box-shadow: var(--shadow-soft);
  transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
}

.guide-card:hover {
  transform: translateY(-3px);
  border-color: rgba(15, 118, 110, 0.28);
  box-shadow: 0 22px 44px rgba(4, 47, 46, 0.12);
}

.guide-card h2 {
  margin: 0 0 0.45rem;
  font-size: 1.25rem;
  font-family: var(--font-display);
}

.guide-card h2 .guide-card-local {
  color: var(--muted);
  font-weight: 500;
  font-size: 0.95rem;
}

.guide-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.5;
}

/* Photo heroes (blog / share) */
.marketing-hero,
.hero {
  position: relative;
  min-height: min(88vh, 44rem);
  display: grid;
  align-items: end;
  color: var(--foam);
  overflow: hidden;
}

.hero .brand-mark,
.marketing-hero .brand-mark {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 3.9rem);
  font-weight: 600;
  margin: 0 0 0.35rem;
  letter-spacing: -0.02em;
  line-height: 1.04;
  color: var(--foam);
}

.hero .brand-mark span,
.marketing-hero .brand-mark span {
  color: var(--sand);
}

.hero h1,
.marketing-hero h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.55rem, 3.4vw, 2.3rem);
  font-weight: 500;
  line-height: 1.2;
  max-width: 22ch;
  color: var(--foam);
}

.hero p,
.marketing-hero p {
  margin: 0 0 1.35rem;
  font-size: 1.05rem;
  line-height: 1.55;
  color: rgba(241, 250, 247, 0.9);
  max-width: 36rem;
}

.hero-inner {
  position: relative;
  z-index: 1;
  padding: clamp(2rem, 6vw, 4.5rem);
  max-width: 46rem;
  animation: skynetRise 0.85s ease both;
}

@keyframes skynetFadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes skynetRise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes heroDrift {
  from {
    transform: scale(1.04) translate3d(0, 0, 0);
  }
  to {
    transform: scale(1.08) translate3d(-1.2%, -0.8%, 0);
  }
}

@media (max-width: 720px) {
  .site-nav {
    flex-wrap: wrap;
  }

  .lang-switch .lang-label {
    display: none;
  }

  .page,
  main.about {
    padding-top: 2.4rem;
  }
}