/* css/header.css */

.site-header {
  position: relative;
  padding-top: calc(0.75rem + env(safe-area-inset-top));
  padding-right: calc(1rem + env(safe-area-inset-right));
  padding-bottom: 0.5rem;
  padding-left: calc(1rem + env(safe-area-inset-left));

  background: var(--color-header-bg);
  border-bottom: 1px solid var(--color-header-border);
  color: var(--color-header-text);
  z-index: 10;
}

/* Row with menu, title, theme toggle */
.header-row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  column-gap: 0.75rem;
}

/* Title */
.site-title {
  margin: 0;
  text-align: center;
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  font-weight: 500;
}

/* Hamburger button */
.menu-btn {
  display: inline-grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;

  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--color-page-text);
}

.menu-btn svg {
  display: block;
}

.menu-btn rect {
  fill: currentColor;
}

/* Theme toggle button */
.theme-toggle {
  display: inline-grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;

  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--color-page-text);
}

/* All icons hidden by default, we pick one via body[data-theme] */
.theme-toggle .ico {
  display: none;
  transition: transform 0.15s ease, opacity 0.15s ease;
}

/* Show appropriate icon per theme */
body[data-theme="light"] .theme-toggle .ico-sun {
  display: block;
}

body[data-theme="dark"] .theme-toggle .ico-moon {
  display: block;
}

body[data-theme="modern"] .theme-toggle .ico-spark {
  display: block;
}

/* Simple hover feedback */
.theme-toggle:hover .ico {
  transform: scale(1.05);
}

/* Dropdown navigation */
.site-nav {
  position: absolute;
  inset-inline-start: 0;
  top: 100%;

  background: var(--color-header-bg);
  border-bottom: 1px solid var(--color-header-border);

  transform-origin: top;
  transform: scaleY(0);
  opacity: 0;
  visibility: hidden;
  transition: transform 0.15s ease, opacity 0.15s ease, visibility 0.15s ease;
}

.site-nav.open {
  transform: scaleY(1);
  opacity: 1;
  visibility: visible;
}

.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0.5rem 1rem 0.75rem;
}

.site-nav li {
  margin: 0.25rem 0;
}

.site-nav a {
  color: var(--color-page-text);
  text-decoration: none;
  font-size: 0.95rem;
}

.site-nav a:hover {
  text-decoration: underline;
}

/* Mobile */
@media (max-width: 767px) {
	.site-nav a {
		font-size: 1.1rem !Important;
	}
	.site-nav li {
		padding-top: 5px !Important;
	}
}