/* thegammvibe — site chrome (nav, footer) */

.site-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px);
  background: color-mix(in oklab, var(--bg) 78%, transparent);
  border-bottom: 1px solid var(--rule);
}
.site-nav__inner {
  max-width: var(--col);
  margin: 0 auto;
  padding: 14px var(--gutter);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 24px;
}
.site-nav__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: var(--t-sm);
  letter-spacing: 0.02em;
}
.site-nav__brand .mark {
  width: 18px; height: 18px;
  border: 1px solid var(--ink);
  border-radius: 50%;
  position: relative;
  flex-shrink: 0;
}
.site-nav__brand .mark::after {
  content: ""; position: absolute;
  inset: 50% auto auto 50%;
  width: 6px; height: 6px;
  background: var(--accent);
  border-radius: 50%;
  transform: translate(-50%, -50%);
}
.site-nav__brand b { font-weight: 500; letter-spacing: -0.01em; }
.site-nav__center {
  display: flex; gap: 28px;
  font-size: var(--t-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-2);
}
.site-nav__center a { padding: 6px 0; position: relative; }
.site-nav__center a:hover { color: var(--ink); }
.site-nav__center a.is-active { color: var(--ink); }
.site-nav__center a.is-active::after {
  content: "";
  position: absolute; left: 0; right: 0; bottom: -2px;
  height: 1px; background: var(--accent);
}
.site-nav__right {
  display: flex; justify-content: flex-end; align-items: center; gap: 16px;
  font-family: var(--mono);
  font-size: var(--t-xs);
  color: var(--ink-3);
  letter-spacing: 0.08em;
}
.site-nav__right .pulse {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 var(--accent-glow);
  animation: pulse 2.4s var(--ease) infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 var(--accent-glow); }
  70% { box-shadow: 0 0 0 8px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}

/* ---- mobile menu ---- */
.site-nav__toggle {
  display: none;
  width: 38px; height: 38px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--rule);
  position: relative;
  cursor: pointer;
}
.site-nav__toggle span {
  display: block;
  position: absolute;
  left: 9px; right: 9px;
  height: 1px;
  background: var(--ink);
  transition: transform .25s var(--ease), opacity .25s var(--ease), top .25s var(--ease);
}
.site-nav__toggle span:nth-child(1) { top: 13px; }
.site-nav__toggle span:nth-child(2) { top: 19px; }
.site-nav__toggle span:nth-child(3) { top: 25px; }
.site-nav.is-open .site-nav__toggle span:nth-child(1) { top: 19px; transform: rotate(45deg); }
.site-nav.is-open .site-nav__toggle span:nth-child(2) { opacity: 0; }
.site-nav.is-open .site-nav__toggle span:nth-child(3) { top: 19px; transform: rotate(-45deg); }

.site-nav__sheet {
  display: none;
}

@media (max-width: 860px) {
  .site-nav__inner {
    grid-template-columns: 1fr auto;
    gap: 12px;
    padding: 12px var(--gutter);
  }
  .site-nav__brand b { font-size: var(--t-sm); }
  .site-nav__brand .dimmer { display: none; }
  .site-nav__center { display: none; }
  .site-nav__right { display: none; }
  .site-nav__toggle { display: block; }

  .site-nav__sheet {
    display: block;
    position: fixed;
    inset: 0 0 0 auto;
    width: min(86vw, 360px);
    background: var(--bg);
    border-left: 1px solid var(--rule);
    padding: 24px 24px 32px;
    transform: translateX(100%);
    transition: transform .35s var(--ease);
    z-index: 100;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 24px;
  }
  .site-nav__sheet.is-open { transform: translateX(0); }
  .site-nav__sheet-head {
    display: flex; justify-content: space-between; align-items: center;
    font-family: var(--mono); font-size: var(--t-xs);
    letter-spacing: 0.18em; text-transform: uppercase;
    color: var(--ink-3);
    padding-bottom: 12px;
    border-bottom: 1px solid var(--rule);
  }
  .site-nav__sheet-head .close {
    width: 28px; height: 28px; padding: 0;
    background: transparent; border: 1px solid var(--rule);
    color: var(--ink-2);
    font-size: 14px;
    cursor: pointer;
  }
  .site-nav__sheet-list {
    display: grid; gap: 4px;
  }
  .site-nav__sheet-list a {
    display: flex; justify-content: space-between; align-items: baseline;
    padding: 18px 0;
    border-bottom: 1px solid var(--rule);
    font-family: var(--serif);
    font-weight: 300;
    font-size: 26px;
    letter-spacing: -0.01em;
    color: var(--ink);
    text-decoration: none;
  }
  .site-nav__sheet-list a .en {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--ink-3);
    font-weight: 400;
  }
  .site-nav__sheet-list a.is-active { color: var(--accent); }
  .site-nav__sheet-foot {
    margin-top: auto;
    padding-top: 16px;
    border-top: 1px solid var(--rule);
    display: flex; justify-content: space-between; align-items: center;
    font-family: var(--mono); font-size: 10px;
    letter-spacing: 0.16em; text-transform: uppercase;
    color: var(--ink-3);
  }
  .site-nav__sheet-foot button {
    padding: 8px 14px;
    background: transparent;
    border: 1px solid var(--rule);
    color: var(--ink-2);
    font-family: inherit;
    font-size: 10px;
    letter-spacing: 0.18em;
  }

  .site-nav__backdrop {
    position: fixed; inset: 0;
    background: color-mix(in oklab, var(--ink) 45%, transparent);
    opacity: 0;
    pointer-events: none;
    transition: opacity .3s var(--ease);
    z-index: 90;
  }
  .site-nav__backdrop.is-open { opacity: 1; pointer-events: auto; }
}

.site-foot {
  border-top: 1px solid var(--rule);
  margin-top: 120px;
  padding: 48px 0 40px;
  font-family: var(--mono);
  font-size: var(--t-xs);
  color: var(--ink-3);
  letter-spacing: 0.06em;
}
.site-foot__inner {
  max-width: var(--col);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
}
.site-foot h6 {
  margin: 0 0 14px;
  font-size: var(--t-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-2);
  font-weight: 500;
}
.site-foot ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.site-foot a:hover { color: var(--ink); }
.site-foot__meta {
  max-width: var(--col);
  margin: 32px auto 0;
  padding: 16px var(--gutter) 0;
  border-top: 1px solid var(--rule);
  display: flex; justify-content: space-between;
  font-size: 10px; letter-spacing: 0.18em; text-transform: uppercase;
}

@media (max-width: 860px) {
  .site-foot {
    margin-top: 72px;
    padding: 36px 0 32px;
  }
  .site-foot__inner {
    grid-template-columns: 1fr 1fr;
    gap: 28px 24px;
  }
  .site-foot__inner > :first-child {
    grid-column: 1 / -1;
  }
  .site-foot__meta {
    flex-direction: column;
    gap: 8px;
    align-items: flex-start;
  }
}
@media (max-width: 480px) {
  .site-foot__inner { grid-template-columns: 1fr; gap: 24px; }
}