/* ============================================================
   NAV.CSS — Hamburger button, slide-in nav drawer, overlay
   Used by: all pages
   ============================================================ */

/* ── OVERLAY (darkens page when drawer is open) ──────────────── */
.nav-overlay {
  position: fixed;
  inset: 0;
  background: var(--overlay);
  z-index: 998;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.nav-overlay.open {
  opacity: 1;
  pointer-events: all;
}

/* ── NAV DRAWER ──────────────────────────────────────────────── */
.nav-drawer {
  position: fixed;
  top: 0;
  right: -310px;
  width: 290px;
  height: 100vh;
  background: var(--drawer-bg);
  border-left: 1px solid var(--border);
  backdrop-filter: blur(16px);
  z-index: 999;
  transition: right 0.28s cubic-bezier(0.4,0,0.2,1);
  display: flex;
  flex-direction: column;
}

.nav-drawer.open { right: 0; }

/* ── DRAWER HEADER ───────────────────────────────────────────── */
.nav-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.nav-drawer-title {
  font-family: 'Cinzel', serif;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
}

.nav-close-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.3rem;
  cursor: pointer;
  padding: 4px 6px;
  line-height: 1;
  border-radius: 4px;
  transition: color 0.15s;
}

.nav-close-btn:hover { color: var(--text-light); }

/* ── DRAWER SCROLL AREA ──────────────────────────────────────── */
.nav-scroll {
  flex: 1;
  overflow-y: auto;
  padding: 8px 0 24px;
}

/* ── SECTION LABELS ──────────────────────────────────────────── */
.nav-section-label {
  font-family: 'Cinzel', serif;
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-dim);
  padding: 16px 20px 6px;
  display: block;
}

/* ── NAV ITEMS ───────────────────────────────────────────────── */
.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 20px;
  text-decoration: none;
  color: var(--text-muted);
  font-family: 'Cinzel', serif;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  border-left: 3px solid transparent;
  transition: all 0.14s;
}

.nav-item:hover,
.nav-item.active {
  color: var(--gold);
  background: color-mix(in srgb, var(--gold) 10%, transparent);
  border-left-color: var(--gold-dim);
}

.nav-item .ni {
  width: 1.1rem;
  height: 1.1rem;
  flex-shrink: 0;
  opacity: 0.75;
}

.nav-item:hover .ni,
.nav-item.active .ni {
  opacity: 1;
}

/* ── HAMBURGER BUTTON ────────────────────────────────────────── */
.hamburger-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 7px 10px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 5px;
  transition: border-color 0.15s;
  flex-shrink: 0;
}

.hamburger-btn:hover { border-color: var(--gold-dim); }

.hamburger-btn span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-muted);
  border-radius: 2px;
  transition: background 0.15s;
}

.hamburger-btn:hover span { background: var(--gold); }

.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 5px 9px 5px 11px;
  background: color-mix(in srgb, var(--bg-soft) 85%, transparent);
  color: var(--text-muted);
  cursor: pointer;
  transition: border-color 0.18s ease, background 0.18s ease, color 0.18s ease, transform 0.18s ease;
  flex-shrink: 0;
}

.theme-toggle:hover {
  border-color: var(--gold-dim);
  color: var(--gold);
  transform: translateY(-1px);
}

.theme-toggle-label {
  font-family: 'Cinzel', serif;
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.theme-toggle-track {
  position: relative;
  width: 42px;
  height: 22px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--gold) 20%, var(--bg-elevated));
  border: 1px solid color-mix(in srgb, var(--gold) 28%, transparent);
  box-shadow: inset 0 1px 5px rgba(0,0,0,0.14);
}

.theme-toggle-thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--gold), var(--gold-dim));
  box-shadow: 0 2px 8px rgba(0,0,0,0.22);
  transition: transform 0.2s ease, background 0.2s ease;
}

.theme-toggle.is-light .theme-toggle-thumb {
  transform: translateX(20px);
  background: linear-gradient(135deg, #fff8dc, #d5b47d);
}

.theme-toggle-symbol {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 14px;
  height: 14px;
  color: var(--text-muted);
  transition: color 0.18s ease, opacity 0.18s ease;
}

.theme-toggle-symbol svg {
  width: 100%;
  height: 100%;
}

.theme-toggle-sun {
  color: color-mix(in srgb, var(--gold) 84%, var(--text-muted));
}

.theme-toggle-moon {
  opacity: 0.7;
}

.theme-toggle.is-light .theme-toggle-sun {
  opacity: 0.65;
  color: var(--text-muted);
}

.theme-toggle.is-light .theme-toggle-moon {
  opacity: 1;
  color: color-mix(in srgb, var(--gold) 78%, var(--text-light));
}

@media (max-width: 640px) {
  .theme-toggle-label { display: none; }
  .theme-toggle { padding: 5px 7px; gap: 7px; }
}