/* Shared Mobile Header Styles — used across pages */

/* Hide any legacy injected nav toggle if present */
.nav-toggle { display: none !important; }

/* Mobile header container */
.mobile-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--surface, #fff);
  border-bottom: 1px solid var(--border, #e5e7eb);
  overflow: visible; /* ensure dropdown and icon are never clipped */
}

/* Header bar: hamburger (left), centered brand, spacer (right) to keep center true */
.mobile-header .mh-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
}

/* Flat hamburger button: no circle, no border, no shadow */
.mobile-header .mh-toggle,
.mobile-header .mh-btn,
.mobile-header #mh-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3.25rem; height: 2.75rem; /* wider tap target */
  background: transparent;
  border: none;
  border-radius: 0; /* no circular container */
  color: var(--text, #0f172a);
  line-height: 1;
  padding: 0;
  box-shadow: none;
  transition: color .15s ease, opacity .15s ease;
  order: 3; /* place hamburger at the right */
}
.mobile-header .mh-toggle:hover,
.mobile-header .mh-btn:hover,
.mobile-header #mh-toggle:hover {
  opacity: .85; /* subtle feedback while remaining flat */
}
.mobile-header .mh-toggle:active,
.mobile-header .mh-btn:active,
.mobile-header #mh-toggle:active {
  opacity: 1;
}
.mobile-header .mh-toggle:focus-visible,
.mobile-header .mh-btn:focus-visible,
.mobile-header #mh-toggle:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(30,64,175,.18); /* accessible focus without shape */
}

/* Icon (3 bars morphing to X) */
.mobile-header .mh-icon {
  position: relative;
  width: 1.25rem;
  height: 1.25rem;
  display: inline-block;
  overflow: visible;
}
.mobile-header .mh-icon::before,
.mobile-header .mh-icon::after,
.mobile-header .mh-icon span {
  content: "";
  position: absolute;
  left: 3px; right: 3px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: transform .2s ease, opacity .2s ease;
}
.mobile-header .mh-icon::before { top: 0; }
.mobile-header .mh-icon::after { bottom: 0; }
.mobile-header .mh-icon span { top: 50%; transform: translateY(-50%); display: block; }

/* Animated icon when open — tuned offsets for clarity */
.mobile-header.open .mh-icon::before { transform: translateY(6px) rotate(45deg); }
.mobile-header.open .mh-icon::after { transform: translateY(-6px) rotate(-45deg); }
.mobile-header.open .mh-icon span { opacity: 0; }

/* Centered brand link/title */
.mobile-header .mh-brand {
  font-weight: 800;
  font-size: 1.125rem;
  color: var(--text, #0f172a);
  text-decoration: none;
  letter-spacing: 0.01em;
  margin: 0 auto;
  order: 2; /* center item */
}
.mobile-header .mh-spacer { width: 3.25rem; height: 2.75rem; order: 1; } /* left-side balance */

/* Dropdown menu — no internal scroll; animates open, page handles overall scroll */
.mobile-header .mh-menu {
  display: block;
  padding: 0 1rem 1rem;
  background: var(--surface, #fff);
  border-bottom: 1px solid var(--border, #e5e7eb);
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  transform: translateY(-0.25rem);
  transition: max-height .25s ease, opacity .2s ease, transform .2s ease;
  will-change: max-height, opacity, transform;
  pointer-events: none;
}
.mobile-header.open .mh-menu {
  max-height: 100vh; /* fallback if JS is blocked */
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.mobile-header .mh-menu a {
  display: block;
  padding: 0.875rem 0;
  text-decoration: none;
  color: var(--text, #0f172a);
  font-weight: 600;
}
.mobile-header .mh-menu a + a {
  border-top: 1px dashed color-mix(in srgb, var(--border, #e5e7eb) 80%, transparent);
}

/* Existing desktop header hidden on small screens */
.desktop-header-slot { display: none; }

/* Very small devices: compact header sizing */
@media (max-width: 380px) {
  .mobile-header .mh-inner { padding: 0.5rem 0.75rem; }
  .mobile-header .mh-toggle, .mobile-header .mh-btn, .mobile-header #mh-toggle, .mobile-header .mh-spacer { width: 2.75rem; height: 2.5rem; }
  .mobile-header .mh-icon { width: 1.125rem; height: 1.125rem; }
  .mobile-header .mh-brand { font-size: 1.0625rem; letter-spacing: 0.005em; }
}

/* Desktop and up: restore original header */
@media (min-width: 48em) {
  .mobile-header { display: none; }
  .desktop-header-slot { display: block; }
}