/* ============================================================
   ydkball — canonical site header
   One implementation shared across every page. Uses each page's
   own CSS custom properties (--paper, --ink, --orange, fonts…).
   ============================================================ */

/* Blend any iOS overscroll / status-bar area with the header. */
html { background: var(--paper); }

.site-nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
}

.site-nav__bar {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 58px;
  padding: 0 24px;
}

.site-nav__brand {
  display: flex;
  align-items: center;
  gap: 9px;
  text-decoration: none;
  flex-shrink: 0;
}
.site-nav__brand img { height: 28px; width: auto; display: block; }
.site-nav__word {
  font-family: var(--ff-serif);
  font-size: 21px;
  letter-spacing: -0.01em;
  color: var(--ink);
  line-height: 1;
}
.site-nav__word span { color: var(--orange); }

.site-nav__links {
  display: flex;
  gap: 2px;
  margin: 0 auto; /* center between brand and auth */
}
.site-nav__links a {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--ink3);
  text-decoration: none;
  padding: 6px 13px;
  border-radius: 4px;
  white-space: nowrap;
  transition: color 0.15s, background 0.15s;
}
.site-nav__links a:hover { color: var(--ink); background: var(--paper2); }
.site-nav__links a.active { color: var(--ink); background: var(--paper3); }

.site-nav__auth {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  min-width: 28px;
}
.site-nav__avatar {
  width: 28px; height: 28px;
  border-radius: 50%;
  object-fit: cover;
  border: 1.5px solid var(--rule);
  display: block;
}
.site-nav__avatar--initial {
  display: flex; align-items: center; justify-content: center;
  background: var(--paper3); color: var(--ink2);
  font-family: var(--ff-mono); font-size: 12px;
}
.site-nav__signin {
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 6px 14px;
  background: var(--orange);
  color: #fff;
  border-radius: 4px;
  text-decoration: none;
  white-space: nowrap;
}

/* ── Mobile: two rows (brand + avatar, then links full-width) ── */
@media (max-width: 640px) {
  .site-nav__bar {
    height: auto;
    flex-wrap: wrap;
    padding: 0 16px;
    gap: 0;
  }
  .site-nav__brand { padding: 9px 0; }
  .site-nav__auth { padding: 9px 0; margin-left: auto; }
  .site-nav__links {
    order: 10;
    flex: 0 0 100%;
    margin: 0;
    justify-content: space-between;
    border-top: 1px solid var(--rule);
    padding: 5px 0;
  }
  .site-nav__links a { padding: 6px 6px; }
  .site-nav .nav-support { margin-left: 35%; display: flex; height: 30px; width: 75px; justify-content: center; }
  .site-nav .nav-support span{ display: none;}
}

/* ── Support button — highlighted, sits next to the avatar ── */
.site-nav .nav-support {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  background: var(--orange);
  color: #fff;
  padding: 7px 13px;
  border-radius: 6px;
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
  margin-right: 12px;
  transition: opacity 0.15s;
}
.site-nav .nav-support:hover { opacity: 0.9; }