/* =========================================================
   SITE HEADER
   ========================================================= */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;

  height: var(--header-height);

  background: var(--color-background);

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

  backdrop-filter: blur(1.6rem);
}

/* =========================================================
   HEADER CONTAINER
   ========================================================= */

.header-container {
  height: 100%;

  display: flex;
  align-items: center;
  justify-content: space-between;

  gap: 3rem;
}

/* =========================================================
   LOGO
   ========================================================= */

.site-logo {
  display: flex;
  align-items: center;

  gap: 0.8rem;

  color: var(--color-text);

  text-decoration: none;

  flex-shrink: 0;
}

.site-logo-mark {
  width: 3.8rem;
  height: 3.8rem;

  display: grid;
  place-items: center;

  background: var(--color-primary);
  color: #ffffff;

  border-radius: 0.9rem;

  font-size: 2rem;
  font-weight: 900;
}

.site-logo-text {
  display: flex;
  flex-direction: column;

  font-size: 1.5rem;
  font-weight: 900;
  line-height: 1;

  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.site-logo-text small {
  margin-top: 0.35rem;

  color: var(--color-primary);

  font-size: 0.9rem;
  letter-spacing: 0.12em;
}

/* =========================================================
   DESKTOP NAVIGATION
   ========================================================= */

.site-navigation {
  display: flex;
  align-items: center;

  gap: 2.8rem;

  margin-left: auto;
}

.site-navigation a {
  position: relative;

  color: var(--color-text-muted);

  text-decoration: none;

  font-size: 1.4rem;
  font-weight: 600;

  transition: color var(--transition-fast);
}

.site-navigation a:hover {
  color: var(--color-text);
}

.site-navigation a:first-child {
  color: var(--color-primary);
}

/* =========================================================
   HEADER ACTIONS
   ========================================================= */

.header-actions {
  display: flex;
  align-items: center;

  gap: 0.8rem;
}

.header-action,
.mobile-menu-toggle {
  width: 4rem;
  height: 4rem;

  display: grid;
  place-items: center;

  border: 0;
  border-radius: 50%;

  background: transparent;

  color: var(--color-text-muted);

  transition:
    background-color var(--transition-fast),
    color var(--transition-fast);
}

.header-action:hover,
.mobile-menu-toggle:hover {
  background: var(--color-surface);

  color: var(--color-text);
}

/* =========================================================
   MOBILE NAVIGATION
   ========================================================= */

.mobile-navigation {
  display: none;

  padding: 1.5rem;

  background: var(--color-surface);

  border-bottom: 1px solid var(--color-border);
}

.mobile-navigation a {
  display: block;

  padding: 1.2rem;

  color: var(--color-text);

  text-decoration: none;

  border-radius: var(--radius-sm);
}

.mobile-navigation a:hover {
  background: var(--color-surface-alt);
}

/* =========================================================
   RESPONSIVE
   ========================================================= */

@media (max-width: 900px) {
  .site-navigation {
    display: none;
  }

  .mobile-menu-toggle {
    display: grid;
  }
}

@media (min-width: 901px) {
  .mobile-menu-toggle {
    display: none;
  }
}