/* Page chrome: header, nav, main column, footer. A single hairline under
   the header; the brand is the only bold thing in it. */

.site-header {
  display: flex;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
  padding: 1rem 2rem;
  border-bottom: 1px solid var(--rule);
}

.brand {
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
  text-decoration: none;
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}
.brand:hover { text-decoration: none; color: var(--accent); }
/* The mark is a square of the accent — the one geometric element. */
.brand-mark {
  display: inline-block;
  width: 0.7em;
  height: 0.7em;
  background: var(--accent);
  font-size: 1em;
  line-height: 0;
  color: transparent;
  overflow: hidden;
}

.site-nav {
  display: flex;
  gap: 1.4rem;
  flex-wrap: wrap;
  align-items: center;
}
.site-nav a {
  color: var(--ink);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.site-nav a:hover { color: var(--accent); text-decoration: none; }
.site-nav .nav-add {
  color: var(--accent);
  font-weight: 600;
}

.site-account {
  margin-left: auto;
  display: flex;
  gap: 1.2rem;
  align-items: center;
  font-size: 0.85rem;
}
.site-account a, .site-account .linklike { color: var(--muted); }
.site-account a:hover, .site-account .linklike:hover { color: var(--accent); }

.page {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.5rem 2rem 4rem;
}
@media (max-width: 640px) {
  .site-header { padding: 0.9rem 1.2rem; gap: 1rem; }
  .page { padding: 1rem 1.2rem 3rem; }
}

.narrow-page { max-width: 440px; }

.site-footer {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.2rem 2rem 2rem;
  color: var(--muted);
  font-size: 0.8rem;
  border-top: 1px solid var(--rule);
}
.site-footer p { margin: 0; }

/* Buttons rendered by button_to that should read as plain links. */
.linklike, button.linklike {
  background: none;
  border: none;
  padding: 0;
  color: var(--accent);
  font: inherit;
  font-size: 0.85rem;
  cursor: pointer;
}
.linklike:hover { text-decoration: underline; }

/* Nav dropdown (<details>): the summary reads like any other nav word with
   a small chevron; the panel is a hairline-bordered list below it. */
.nav-menu { position: relative; }
.nav-menu > summary {
  list-style: none;
  cursor: pointer;
  color: var(--ink);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}
.nav-menu > summary::-webkit-details-marker { display: none; }
.nav-menu > summary::after {
  content: "";
  width: 0.4em;
  height: 0.4em;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: translateY(-0.15em) rotate(45deg);
}
.nav-menu[open] > summary::after { transform: translateY(0.1em) rotate(225deg); }
.nav-menu > summary:hover, .nav-menu[open] > summary { color: var(--accent); }
.nav-menu-panel {
  position: absolute;
  top: calc(100% + 0.8rem);
  left: -0.9rem;
  min-width: 11rem;
  background: var(--paper);
  border: 1px solid var(--rule-strong);
  padding: 0.3rem 0;
  z-index: 10;
  display: flex;
  flex-direction: column;
}
.site-nav .nav-menu-panel a {
  padding: 0.5rem 0.9rem;
  text-transform: none;
  letter-spacing: 0;
  font-size: 0.9rem;
  font-weight: 500;
}
.site-nav .nav-menu-panel a:hover { background: var(--surface); color: var(--accent); }
.site-nav .nav-menu-panel a.nav-menu-danger { color: var(--signal); border-top: 1px solid var(--rule); margin-top: 0.3rem; padding-top: 0.7rem; }