/* Left navigation drawer (US2). Slides from the left with a dimmed backdrop. */

.drawer {
  position: fixed;
  inset: 0;
  z-index: 300;
  visibility: hidden;
}
.drawer.is-open { visibility: visible; }

.drawer__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  opacity: 0;
  transition: opacity var(--dur-med) ease;
}
.drawer.is-open .drawer__backdrop { opacity: 1; }

.drawer__panel {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 288px;
  max-width: 82vw;
  display: flex;
  flex-direction: column;
  padding: var(--space-4);
  background: var(--surface-1);
  border-right: 1px solid var(--border-subtle);
  transform: translateX(-100%);
  transition: transform var(--dur-med) var(--ease-standard);
}
.drawer.is-open .drawer__panel { transform: translateX(0); }

.drawer__close {
  align-self: flex-end;
  background: none;
  border: 0;
  color: var(--text-secondary);
  font-size: var(--text-h2);
  cursor: pointer;
}

.drawer__nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  margin-top: var(--space-5);
  flex: 1;
}

.drawer__link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  width: 100%;
  padding: var(--space-3);
  border-radius: var(--radius-tile);
  color: var(--text-secondary);
  font: 600 var(--text-h3) / 1 var(--font-display);
  background: none;
  border: 0;
  cursor: pointer;
  text-align: left;
}
.drawer__link .icon { font-size: 22px; }
.drawer__link:hover,
.drawer__link:focus-visible { background: var(--surface-3); color: var(--text-primary); }

.drawer__footer {
  border-top: 1px solid var(--border-subtle);
  padding-top: var(--space-3);
  margin-top: var(--space-3);
}
.drawer__signout .icon { color: var(--danger); }

body.drawer-open { overflow: hidden; }