/*
 * Site navigation (header.php). Loaded on every page that includes header.php.
 * The home page also has these rules in ltc-styles.css; they are identical, so
 * loading both is harmless. The worksheet pages (/esl/, /ela/) load only this
 * file, so it carries its own colours and resets.
 */
.ltc-nav, .ltc-mobile-menu {
  --ink: #1a1612; --paper: #faf7f2; --warm: #f5efe6; --amber: #d4882a;
  --amber-light: #f0b860; --amber-dark: #a8620a; --muted: #8a7d72; --rule: #e0d8ce;
  font-family: 'DM Sans', sans-serif; font-weight: 400; line-height: 1.5; font-size: 16px;
}
.ltc-nav *, .ltc-mobile-menu * { box-sizing: border-box; }
.ltc-nav ul, .ltc-nav li { margin: 0; padding: 0; list-style: none; }

/* Pages that are not the home page leave room for the fixed bar. */
body.ltc-has-nav { padding-top: 71px; }
@media (max-width: 900px) { body.ltc-has-nav { padding-top: 69px; } }

.ltc-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(250, 247, 242, 0.93);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--rule);
  transition: box-shadow 0.3s;
}
.ltc-nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 4rem;
  max-width: 1400px;
  margin: 0 auto;
}
.ltc-nav-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--ink);
}
.ltc-logo-mark {
  width: 36px; height: 36px;
  background: var(--ink);
  border-radius: 8px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  overflow: hidden;
  padding: 4px;
}
.ltc-logo-mark img { width: 100%; height: 100%; object-fit: contain; filter: invert(1) sepia(1) saturate(3) hue-rotate(5deg); }
.ltc-logo-text {
  font-family: 'Playfair Display', serif;
  font-size: 1.05rem;
  font-weight: 700;
}
.ltc-nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
  align-items: center;
}
.ltc-nav-links a {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: color 0.2s;
}
.ltc-nav-links a:hover { color: var(--amber); }
.ltc-nav-cta {
  background: var(--ink);
  color: var(--amber-light) !important;
  padding: 0.5rem 1.3rem;
  border-radius: 100px;
  transition: background 0.2s !important;
}
.ltc-nav-cta:hover { background: var(--amber-dark) !important; color: #fff !important; }

/* Hamburger */
.ltc-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px; height: 36px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 200;
}
.ltc-hamburger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
  transform-origin: center;
}
.ltc-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.ltc-hamburger.open span:nth-child(2) { opacity: 0; }
.ltc-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile drawer */
.ltc-mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--paper);
  z-index: 150;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}
.ltc-mobile-menu.open { opacity: 1; pointer-events: all; }
.ltc-mobile-menu a {
  font-family: 'Playfair Display', serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
  padding: 0.4rem 1rem;
  transition: color 0.2s;
}
.ltc-mobile-menu a:hover { color: var(--amber); }
.ltc-mobile-cta {
  margin-top: 1rem;
  background: var(--ink);
  color: var(--amber-light) !important;
  padding: 0.75rem 2rem;
  border-radius: 100px;
  font-family: 'DM Sans', sans-serif;
  /* font-size: 1rem !important; */
  font-weight: 500;
}
.ltc-mobile-close {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  font-size: 2.8rem;
  line-height: 1;
  cursor: pointer;
  color: var(--ink);
  padding: 0;
  transition: color 0.2s;
}
.ltc-mobile-close:hover { color: var(--amber); }


/* ── Current section + dropdown menus ───────────────── */
.ltc-nav-links { gap: 2.2rem; }
.ltc-nav-links a { padding: 0.35rem 0; }
.ltc-nav-links a.ltc-current, .ltc-drop-toggle.ltc-current { color: var(--ink); box-shadow: 0 2px 0 var(--amber); }

.ltc-has-drop { position: relative; display: flex; align-items: center; }
.ltc-drop-toggle {
  font: inherit; font-size: 0.9rem; font-weight: 400; letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--muted); background: none; border: 0; padding: 0.35rem 0; cursor: pointer;
  display: inline-flex; align-items: center; gap: 0.35rem; transition: color 0.2s;
}
.ltc-drop-toggle::after {
  content: ''; width: 6px; height: 6px; border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg) translateY(-2px); transition: transform 0.2s;
}
/* Link + arrow: the arrow is its own small button so the link still goes to the parent page. */
.ltc-drop-arrow { padding: 0.35rem 0 0.35rem 0.4rem; }
.ltc-has-drop:hover > .ltc-drop-toggle, .ltc-has-drop:hover > .ltc-drop-link,
.ltc-has-drop.open > .ltc-drop-toggle, .ltc-drop-toggle:hover { color: var(--amber); }
.ltc-has-drop.open > .ltc-drop-toggle::after { transform: rotate(225deg) translateY(-2px); }
.ltc-drop {
  position: absolute; top: 100%; left: -1rem; min-width: 230px; padding: 0.5rem 0; margin-top: 0.6rem;
  background: var(--paper); border: 1px solid var(--rule); border-radius: 10px;
  box-shadow: 0 12px 32px rgba(26,22,18,0.12);
  opacity: 0; visibility: hidden; transform: translateY(-4px); transition: opacity 0.15s, transform 0.15s, visibility 0.15s;
}
/* Invisible bridge so the menu stays open while the pointer crosses the gap. */
.ltc-drop::before { content: ''; position: absolute; left: 0; right: 0; top: -0.7rem; height: 0.7rem; }
.ltc-has-drop:hover > .ltc-drop, .ltc-has-drop:focus-within > .ltc-drop, .ltc-has-drop.open > .ltc-drop {
  opacity: 1; visibility: visible; transform: none;
}
.ltc-drop li { display: block; }
.ltc-drop a {
  display: block; padding: 0.6rem 1.1rem; text-transform: none; letter-spacing: 0; font-size: 0.95rem; color: var(--ink);
}
.ltc-drop a:hover { background: var(--warm); color: var(--amber-dark); }

@media (max-width: 1100px) { .ltc-nav-links { gap: 1.5rem; } .ltc-nav-inner { padding-left: 2rem; padding-right: 2rem; } }

/* Mobile drawer: sub-links sit under their parent, smaller. */
.ltc-mobile-menu .ltc-mobile-sub { font-family: 'DM Sans', sans-serif; font-size: 1.05rem; font-weight: 500; color: var(--muted); padding: 0.1rem 1rem; }
.ltc-mobile-menu .ltc-mobile-label { font-family: 'Playfair Display', serif; font-size: 2rem; font-weight: 700; color: var(--ink); padding: 0.4rem 1rem 0; margin-top: 0.4rem; }
.ltc-mobile-menu .ltc-mobile-group { margin-top: 0.8rem; }
.ltc-mobile-menu a.ltc-current { color: var(--amber); }

@media (max-width: 900px) {
  .ltc-nav-inner { padding: 1rem 1.5rem; }
  .ltc-nav-links { display: none; }
  .ltc-hamburger { display: flex; }
  .ltc-mobile-menu { display: flex; overflow-y: auto; justify-content: flex-start; padding-top: 5rem; padding-bottom: 3rem; }
}