/**
 * ri-topbar.css — Fixed Top Navigation Bar
 * ==========================================
 * Implementation Guide Reference: § 5 (Top Bar)
 *
 * Components (left → right):
 *   1. Logo area (64 px)
 *   2. Site title "RACK INSPECTIONS"
 *   3. Search field (fills available space)
 *   4. Notification bell with badge
 *   5. User avatar with dropdown caret
 */

/* ── Top bar shell ───────────────────────────────────────── */
.ri-topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--topbar-height);
  z-index: 1000;
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: 0 var(--space-4);
  background: var(--color-bg-panel);
  border-bottom: 1px solid var(--color-border);
}

/* ── 1. Logo area ─────────────────────────────────────────
   Fixed-width column matching --sidebar-icon-width */
.ri-topbar__logo {
  width: var(--sidebar-icon-width);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.ri-topbar__logo img {
  width: 134px;
  height: 134px;
  object-fit: contain;
}

/* ── 2. Site title ─────────────────────────────────────────
   Hidden on mobile; shown from 768px+ */
.ri-topbar__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 26px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-primary);
  white-space: nowrap;
}
@media (max-width: 768px) { .ri-topbar__title { display: none; } }

/* ── 3. Search field ──────────────────────────────────────
   Grows to fill remaining space between title and icons */
.ri-topbar__search {
  flex: 1;
  max-width: 520px;
  position: relative;
}
.ri-topbar__search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  pointer-events: none;
  font-size: 14px;
}
.ri-topbar__search input {
  width: 100%;
  height: 34px;
  padding: 0 var(--space-4) 0 36px;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: 20px;       /* pill shape */
  color: var(--color-text-primary);
  font-family: var(--font-body);
  font-size: 13px;
  outline: none;
  transition: border-color var(--transition-fast);
}
.ri-topbar__search input::placeholder { color: var(--color-text-muted); }
.ri-topbar__search input:focus { border-color: var(--color-accent); }

/* ── 4. Notification bell ─────────────────────────────────
   Icon button with a red badge overlay */
.ri-topbar__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-left: auto;
}
.ri-topbar__icon-btn {
  position: relative;
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--color-text-secondary);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
}
.ri-topbar__icon-btn:hover {
  color: var(--color-text-primary);
  background: var(--color-bg-elevated);
}
.ri-topbar__badge {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 16px;
  height: 16px;
  background: var(--color-danger);
  border-radius: 50%;
  font-size: 9px;
  font-weight: 700;
  color: #fff;
  display: grid;
  place-items: center;
  border: 2px solid var(--color-bg-panel);
}

/* ── 5. User avatar + caret ───────────────────────────────
   Circular avatar with dropdown affordance */
.ri-topbar__user {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}
.ri-topbar__user:hover { background: var(--color-bg-elevated); }
.ri-topbar__avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
  background: var(--color-bg-elevated);
  border: 2px solid var(--color-border);
}
.ri-topbar__caret {
  color: var(--color-text-muted);
  font-size: 10px;
}