/* Thin Air Studio — shared styles (nav, footer, type, legal pages) */

:root {
  --night: #0a0f1f;
  --sky: #16244a;
  --haze: #7a93bd;
  --glow: #f3a98c;
  --snow: #f5f7fb;
  --ink: #dce3ef;
  --mute: #93a3bf;
  --line: rgba(220, 227, 239, 0.14);
  --font: 'Bricolage Grotesque', 'Helvetica Neue', Arial, sans-serif;
  --nav-h: 64px;
  --gutter: clamp(16px, 4vw, 40px);
  --measure: 62ch;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--night);
  overflow-x: hidden;
}

img { display: block; max-width: 100%; }

a { color: inherit; }

:focus-visible { outline: 2px solid var(--glow); outline-offset: 3px; border-radius: 2px; }

/* ---------- nav ---------- */

.nav {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--nav-h);
  z-index: 50;
  display: flex;
  align-items: center;
  padding: 0 var(--gutter);
  transition: background 0.3s ease, border-color 0.3s ease;
  border-bottom: 1px solid transparent;
}

.nav.scrolled {
  background: rgba(10, 15, 31, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
}

.nav-inner {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 600;
  font-size: 17px;
  letter-spacing: -0.01em;
  color: var(--snow);
}

.wordmark svg { width: 22px; height: 22px; }

.nav-links {
  display: flex;
  gap: 28px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-links a {
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  color: var(--mute);
  transition: color 0.2s ease;
}

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

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 0;
  background: none;
  color: var(--snow);
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  height: 2px;
  background: currentColor;
  margin: 5px 0;
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

@media (max-width: 640px) {
  .nav-toggle { display: block; }
  .nav-links {
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: rgba(10, 15, 31, 0.96);
    border-bottom: 1px solid var(--line);
    padding: 8px 0 12px;
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { display: block; padding: 12px var(--gutter); font-size: 17px; }
  .nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
}

/* ---------- buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 0.15s ease, background 0.2s ease, border-color 0.2s ease;
}

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

.btn-solid { background: var(--snow); color: var(--night); }
.btn-solid:hover { background: #fff; }

.btn-ghost { border-color: rgba(245, 247, 251, 0.35); color: var(--snow); }
.btn-ghost:hover { border-color: var(--snow); }

/* ---------- footer ---------- */

.footer {
  border-top: 1px solid var(--line);
  padding: 40px var(--gutter) 48px;
  font-size: 14px;
  color: var(--mute);
}

.footer-inner {
  max-width: 1120px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 16px 40px;
  align-items: baseline;
  justify-content: space-between;
}

.footer-name { color: var(--snow); font-weight: 600; }
.footer-name small { display: block; font-weight: 400; color: var(--mute); margin-top: 2px; }

.footer-links { display: flex; flex-wrap: wrap; gap: 8px 22px; margin: 0; padding: 0; list-style: none; }
.footer-links a { text-decoration: none; }
.footer-links a:hover { color: var(--snow); }

.footer-copy { flex-basis: 100%; }

/* ---------- long-form pages (privacy, terms, contact) ---------- */

.page {
  max-width: 760px;
  margin: 0 auto;
  padding: calc(var(--nav-h) + 56px) var(--gutter) 80px;
}

.page h1 {
  font-size: clamp(34px, 5vw, 48px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.05;
  color: var(--snow);
  margin: 0 0 8px;
}

.page .dateline { color: var(--mute); margin: 0 0 40px; }

.page h2 {
  font-size: 22px;
  font-weight: 650;
  letter-spacing: -0.01em;
  color: var(--snow);
  margin: 48px 0 12px;
  scroll-margin-top: calc(var(--nav-h) + 16px);
}

.page h3 { font-size: 17px; font-weight: 650; color: var(--snow); margin: 24px 0 8px; }

.page p, .page li { max-width: var(--measure); }
.page p { margin: 0 0 14px; }
.page ul, .page ol { padding-left: 22px; margin: 0 0 16px; }
.page li { margin-bottom: 6px; }

.page a { color: var(--glow); text-decoration-thickness: 1px; text-underline-offset: 3px; }

.page table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0 20px;
  font-size: 15px;
}
.page th, .page td { text-align: left; padding: 10px 12px 10px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
.page th { color: var(--snow); font-weight: 600; }

.toc {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px 22px;
  margin: 0 0 40px;
}
.toc summary { cursor: pointer; font-weight: 600; color: var(--snow); }
.toc ol { margin: 12px 0 0; padding-left: 20px; columns: 2; column-gap: 32px; }
.toc li { break-inside: avoid; margin-bottom: 4px; font-size: 15px; }
.toc a { color: var(--ink); text-decoration: none; }
.toc a:hover { color: var(--glow); }
@media (max-width: 520px) { .toc ol { columns: 1; } }

.callout {
  border-left: 3px solid var(--glow);
  padding: 4px 0 4px 18px;
  color: var(--snow);
  margin: 20px 0 24px;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001s !important; transition-duration: 0.001s !important; }
}