/* ============================================
   Header / Navigation
   ============================================ */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: var(--transition-base);
  height: 80px;
  display: flex;
  align-items: center;
}

.header--transparent {
  background-color: transparent;
}

.header--scrolled {
  background-color: var(--color-bg-white);
  box-shadow: var(--shadow-nav);
  height: 70px;
}

.header__inner {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Logo */
.header__logo {
  display: flex;
  align-items: center;
}

.header__logo-img {
  height: 36px;
  width: auto;
  transition: var(--transition-base);
}

.header__logo-img--light {
  display: block;
}

.header__logo-img--dark {
  display: none;
}

.header--scrolled .header__logo-img--light {
  display: none;
}

.header--scrolled .header__logo-img--dark {
  display: block;
}

/* Nav */
.header__nav {
  display: flex;
  align-items: center;
  gap: 48px;
}

.header__nav-list {
  display: flex;
  align-items: center;
  gap: 40px;
}

.header__nav-item {
  position: relative;
}

.header__nav-link {
  display: block;
  font-size: var(--font-base);
  font-weight: 500;
  color: var(--color-text-white);
  padding: 8px 0;
  position: relative;
  transition: var(--transition-base);
}

.header--scrolled .header__nav-link {
  color: var(--color-text-title);
}

.header__nav-link:hover,
.header__nav-item--active .header__nav-link {
  color: var(--color-primary);
}

.header__nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 24px;
  height: 2px;
  background-color: var(--color-primary);
  transition: var(--transition-base);
}

.header__nav-item--active .header__nav-link::after,
.header__nav-link:hover::after {
  transform: translateX(-50%) scaleX(1);
}

/* Right Actions */
.header__actions {
  display: flex;
  align-items: center;
  gap: 20px;
}

/* Search */
.header__search {
  display: flex;
  align-items: center;
  position: relative;
}

.header__search-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: var(--color-text-white);
  transition: var(--transition-base);
}

.header--scrolled .header__search-btn {
  color: var(--color-text-title);
}

.header__search-btn:hover {
  color: var(--color-primary);
}

.header__search-btn svg {
  width: 20px;
  height: 20px;
}

.header__search-input-wrap {
  position: absolute;
  right: 100%;
  top: 50%;
  transform: translateY(-50%);
  margin-right: 10px;
  width: 0;
  overflow: hidden;
  transition: width 0.3s ease;
}

.header__search-input-wrap--open {
  width: 240px;
}

.header__search-input {
  width: 240px;
  padding: 8px 16px;
  border: 1px solid var(--color-border);
  border-radius: 20px;
  font-size: var(--font-sm);
  background-color: var(--color-bg-white);
}

.header__search-input:focus {
  border-color: var(--color-primary);
}

/* Mobile hamburger */
.header__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 30px;
  height: 30px;
  cursor: pointer;
  z-index: 1001;
}

.header__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text-white);
  transition: var(--transition-base);
}

.header--scrolled .header__hamburger span {
  background-color: var(--color-text-title);
}

.header__hamburger--open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.header__hamburger--open span:nth-child(2) {
  opacity: 0;
}

.header__hamburger--open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Drawer */
.header__drawer {
  position: fixed;
  top: 0;
  right: -100%;
  width: 280px;
  height: 100vh;
  background-color: var(--color-bg-white);
  z-index: 1000;
  transition: right 0.4s ease;
  padding: 100px 30px 30px;
  box-shadow: -4px 0 20px rgba(0, 0, 0, 0.1);
}

.header__drawer--open {
  right: 0;
}

.header__drawer-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-base);
}

.header__drawer-overlay--open {
  opacity: 1;
  visibility: visible;
}

.header__drawer-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.header__drawer-item {
  border-bottom: 1px solid var(--color-border-light);
}

.header__drawer-link {
  display: block;
  padding: 16px 0;
  font-size: var(--font-base);
  color: var(--color-text-title);
  font-weight: 500;
}

.header__drawer-link:hover,
.header__drawer-item--active .header__drawer-link {
  color: var(--color-primary);
}

/* Sub page header (always white/non-transparent) */
.header--subpage {
  background-color: var(--color-bg-white);
  box-shadow: var(--shadow-nav);
  height: 70px;
}

.header--subpage .header__nav-link {
  color: var(--color-text-title);
}

.header--subpage .header__logo-img--light {
  display: none;
}

.header--subpage .header__logo-img--dark {
  display: block;
}

.header--subpage .header__search-btn {
  color: var(--color-text-title);
}

.header--subpage .header__hamburger span {
  background-color: var(--color-text-title);
}

/* Responsive */
@media (max-width: 996px) {
  .header {
    height: 64px;
  }
  .header--scrolled {
    height: 60px;
  }
  .header__nav {
    display: none;
  }
  .header__hamburger {
    display: flex;
  }
  .header__actions .header__search {
    display: none;
  }
}

@media (max-width: 800px) {
  .header__logo-img {
    height: 30px;
  }
}