/* Header component styles */

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 0 20px;
}

/* Brand (logo + name) */
.site-header__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-text);
  flex-shrink: 0;
}
.site-header__logo {
  width: 34px;
  height: 34px;
  color: var(--color-primary);
  display: flex;
}
.site-header__logo svg { width: 100%; height: 100%; }
.site-header__name {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

/* Primary nav */
.site-header__nav {
  flex: 1;
  display: flex;
  justify-content: center;
}
.site-header__menu {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0;
  padding: 0;
}
.site-header__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-base);
  white-space: nowrap;
  transition: background var(--transition-fast), color var(--transition-fast);
}
.site-header__link:hover,
.site-header__link:focus-visible {
  background: var(--color-bg-soft);
  color: var(--color-primary);
}
.site-header__link.is-active {
  color: var(--color-primary);
}

.dropdown-toggle__chevron {
  width: 14px;
  height: 14px;
  display: inline-flex;
  transition: transform var(--transition-base);
}
.dropdown-toggle__chevron svg { width: 100%; height: 100%; }
.site-header.is-menu-open .dropdown-toggle__chevron,
.dropdown-toggle[aria-expanded="true"] .dropdown-toggle__chevron {
  transform: rotate(180deg);
}
.site-header.is-menu-open .dropdown-toggle {
  background: var(--color-bg-soft);
  color: var(--color-primary);
}

/* Right-side actions: dark-mode switch + hamburger */
.site-header__actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

/* ---------- Dark-mode switch ---------- */
.theme-toggle {
  padding: 0;
  border: none;
  background: none;
  cursor: pointer;
  flex-shrink: 0;
}
.theme-toggle__track {
  position: relative;
  display: flex;
  align-items: center;
  width: 52px;
  height: 28px;
  padding: 0 6px;
  border-radius: 999px;
  background: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  transition: background var(--transition-base), border-color var(--transition-base);
}
.theme-toggle__icon {
  position: relative;
  z-index: 1;
  width: 15px;
  height: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.theme-toggle__icon svg { width: 100%; height: 100%; }
.theme-toggle__icon--sun { color: #f2a91d; margin-right: auto; }
.theme-toggle__icon--moon { color: var(--color-text-muted); margin-left: auto; }
.theme-toggle__thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--color-bg);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), background var(--transition-base);
}
html[data-theme="dark"] .theme-toggle__thumb {
  transform: translateX(24px);
}
html[data-theme="dark"] .theme-toggle__track {
  background: #262b36;
}

/* ---------- All Tools mega-menu: full-width shelf below the whole header ---------- */
.mega-menu {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  z-index: 999;
  display: flex;
  justify-content: center;
  pointer-events: none;
  opacity: 0;
  transform: translateY(-6px);
  transition: opacity var(--transition-base), transform var(--transition-base);
}
.site-header.is-menu-open .mega-menu {
  pointer-events: auto;
  opacity: 1;
  transform: translateY(0);
}

.mega-menu__inner {
  width: min(var(--container-max), calc(100% - 40px));
  margin-top: 10px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 28px 32px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 8px 24px;
}

.mega-menu__col-title {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
  margin: 0 0 14px;
}

.mega-menu__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.mega-menu__tool {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 8px;
  margin: 0 -8px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--color-text);
  font-size: 14px;
  font-weight: 500;
  transition: background var(--transition-fast), color var(--transition-fast);
}
.mega-menu__tool:hover {
  background: var(--color-bg-soft);
  color: var(--color-primary);
}
.mega-menu__tool-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--color-primary);
}
.mega-menu__tool-icon svg { width: 100%; height: 100%; }

/* Category accent colours on tool icons, per column */
.mega-menu__col[data-category="organize"] .mega-menu__tool-icon { color: var(--color-organize); }
.mega-menu__col[data-category="optimize"] .mega-menu__tool-icon { color: var(--color-optimize); }
.mega-menu__col[data-category="convert"]  .mega-menu__tool-icon { color: var(--color-convert); }
.mega-menu__col[data-category="edit"]     .mega-menu__tool-icon { color: var(--color-edit); }
.mega-menu__col[data-category="security"] .mega-menu__tool-icon { color: var(--color-security); }

/* ---------- Hamburger (mobile trigger, right side) ---------- */
.hamburger {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text);
  cursor: pointer;
  flex-shrink: 0;
}
.hamburger__icon {
  width: 20px;
  height: 20px;
  display: flex;
}
.hamburger__icon svg { width: 100%; height: 100%; }
.hamburger__icon--close { display: none; }
.hamburger[aria-expanded="true"] .hamburger__icon--open { display: none; }
.hamburger[aria-expanded="true"] .hamburger__icon--close { display: flex; }

/* ---------- Mobile off-canvas menu ---------- */
.mobile-menu-backdrop {
  position: fixed;
  inset: 0;
  background: var(--color-overlay);
  z-index: 1099;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}
.mobile-menu-backdrop.is-visible {
  opacity: 1;
  visibility: visible;
}

.mobile-menu {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(340px, 86vw);
  background: var(--color-bg);
  z-index: 1100;
  box-shadow: var(--shadow-lg);
  transform: translateX(100%);
  transition: transform var(--transition-base);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}
.mobile-menu.is-open {
  transform: translateX(0);
}

.mobile-menu__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 18px;
  border-bottom: 1px solid var(--color-border);
}
.mobile-menu__close {
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: var(--color-bg-soft);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  cursor: pointer;
}
.mobile-menu__close svg { width: 18px; height: 18px; }

.mobile-menu__list {
  list-style: none;
  margin: 0;
  padding: 8px 10px 24px;
  display: flex;
  flex-direction: column;
}
.mobile-menu__link {
  display: block;
  padding: 13px 12px;
  border-radius: var(--radius-sm);
  color: var(--color-text);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
}
.mobile-menu__link:hover,
.mobile-menu__link.is-active {
  background: var(--color-bg-soft);
  color: var(--color-primary);
}

.mobile-accordion__toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 13px 12px;
  border: none;
  background: none;
  font-size: 15px;
  font-weight: 500;
  font-family: var(--font-base);
  color: var(--color-text);
  cursor: pointer;
  border-radius: var(--radius-sm);
}
.mobile-accordion__toggle:hover {
  background: var(--color-bg-soft);
}
.mobile-accordion__chevron {
  width: 14px;
  height: 14px;
  display: inline-flex;
  transition: transform var(--transition-base);
}
.mobile-accordion__chevron svg { width: 100%; height: 100%; }
.mobile-accordion__toggle[aria-expanded="true"] .mobile-accordion__chevron {
  transform: rotate(180deg);
}

.mobile-accordion__panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base);
  padding: 0 4px;
}
.mobile-accordion.is-open .mobile-accordion__panel {
  max-height: 2000px;
}

.mobile-accordion__group-title {
  margin: 14px 8px 6px;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
}
.mobile-accordion__tools {
  list-style: none;
  margin: 0;
  padding: 0;
}
.mobile-accordion__tool {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 8px;
  border-radius: var(--radius-sm);
  color: var(--color-text);
  text-decoration: none;
  font-size: 14px;
}
.mobile-accordion__tool:hover {
  background: var(--color-bg-soft);
}
.mobile-accordion__tool-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--color-primary);
}
.mobile-accordion__tool-icon svg { width: 100%; height: 100%; }

.mobile-menu__theme-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 12px 4px;
  margin-top: 8px;
  border-top: 1px solid var(--color-border);
  font-size: 15px;
  font-weight: 500;
}

/* ---------- Breakpoints ---------- */
@media (max-width: 960px) {
  .site-header__nav { display: none; }
  .hamburger { display: flex; }
  .mega-menu { display: none; }
}

@media (min-width: 961px) {
  .mobile-menu,
  .mobile-menu-backdrop,
  .mobile-menu__theme-row { display: none; }
}

@media (max-width: 480px) {
  .site-header__name { font-size: 17px; }
  .site-header__inner { padding: 0 14px; gap: 10px; }
}