.dm-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(10px);
  background-color: rgba(246, 245, 243, 0.9);
  border-bottom: 1px solid var(--color-border-subtle);
}

.dm-header__top-bar {
  background: linear-gradient(90deg, rgba(196, 154, 108, 0.14), rgba(196, 154, 108, 0.05));
  color: var(--color-gray-800);
}

.dm-header__top-bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-1);
  gap: var(--space-3);
}

.dm-header__top-text {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.dm-header__top-link {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.dm-header__main {
  background-color: rgba(246, 245, 243, 0.9);
}

.dm-header__main-inner {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--space-4);
  padding-block: var(--space-3);
}

.dm-header__identity {
  display: flex;
  align-items: center;
}

.dm-header__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.dm-header__brand-mark {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid rgba(196, 154, 108, 0.4);
  background: radial-gradient(circle at 30% 20%, #ffffff 0, #f4ece0 36%, #c49a6c 100%);
  box-shadow: var(--shadow-sm);
}

.dm-header__brand-text {
  display: flex;
  flex-direction: column;
}

.dm-header__brand-name {
  font-family: var(--font-serif);
  font-size: var(--font-size-lg);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.dm-header__brand-tagline {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.dm-header__nav {
  justify-self: center;
}

.dm-header__nav-list {
  list-style: none;
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.dm-header__nav-link {
  position: relative;
  font-size: var(--font-size-sm);
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--color-gray-800);
}

.dm-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.4rem;
  width: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--color-primary-strong), var(--color-primary));
  transition: width var(--transition-base);
}

.dm-header__nav-link:focus-visible::after,
.dm-header__nav-link:hover::after {
  width: 100%;
}

.dm-header__nav-item--accent .dm-header__nav-link {
  color: var(--color-primary-strong);
}

.dm-header__actions {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.dm-header__icon-link {
  width: 36px;
  height: 36px;
  border-radius: 999px;
  border: 1px solid var(--color-border-subtle);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-surface);
  color: var(--color-gray-700);
  transition: background-color var(--transition-base),
    color var(--transition-base),
    box-shadow var(--transition-base),
    transform var(--transition-fast);
}

.dm-header__icon-link:hover {
  background-color: var(--color-surface-alt);
  color: var(--color-primary-strong);
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}

.dm-header__nav-toggle {
  display: none;
  align-items: center;
  gap: var(--space-2);
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border-subtle);
  background-color: var(--color-surface);
  cursor: pointer;
}

.dm-header__nav-toggle-box {
  width: 18px;
  height: 14px;
  display: inline-flex;
  flex-direction: column;
  justify-content: space-between;
}

.dm-header__nav-toggle-line {
  height: 2px;
  width: 100%;
  border-radius: var(--radius-pill);
  background-color: var(--color-gray-800);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.dm-header__nav-toggle-text {
  font-size: var(--font-size-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-gray-800);
}

.dm-header__nav-toggle:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Mobile layout */
@media (max-width: 768px) {
  .dm-header__top-bar-inner {
    justify-content: center;
    text-align: center;
  }

  .dm-header__top-link {
    display: none;
  }

  .dm-header__main-inner {
    grid-template-columns: auto auto;
    grid-template-rows: auto auto;
    grid-template-areas:
      "brand actions"
      "nav nav";
    row-gap: var(--space-2);
  }

  .dm-header__identity {
    grid-area: brand;
  }

  .dm-header__actions {
    grid-area: actions;
    justify-content: flex-end;
  }

  .dm-header__nav {
    grid-area: nav;
    width: 100%;
  }

  .dm-header__nav-toggle {
    display: inline-flex;
  }

  .dm-header__nav-list {
    position: fixed;
    inset-inline: 0;
    top: calc(56px + 32px);
    /* approx header height */
    padding: var(--space-4);
    padding-top: var(--space-4);
    flex-direction: column;
    gap: var(--space-3);
    background-color: var(--color-surface);
    box-shadow: 0 18px 40px rgba(15, 16, 19, 0.14);
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    visibility: hidden;
    transition: opacity var(--transition-base),
      transform var(--transition-base),
      visibility 0s linear var(--transition-base);
  }

  .dm-header__nav-list.is-open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
    visibility: visible;
    transition-delay: 0s;
  }

  .dm-header__nav-item {
    width: 100%;
  }

  .dm-header__nav-link {
    display: block;
    width: 100%;
    padding-block: 0.35rem;
    font-size: var(--font-size-md);
  }

  .dm-header__nav-link::after {
    display: none;
  }

  .dm-header__nav-toggle.is-active .dm-header__nav-toggle-line:first-child {
    transform: translateY(6px) rotate(45deg);
  }

  .dm-header__nav-toggle.is-active .dm-header__nav-toggle-line:last-child {
    transform: translateY(-6px) rotate(-45deg);
  }
}

@media (max-width: 520px) {
  .dm-header__brand-tagline {
    display: none;
  }
}