/* =========================================================================
   UNIVERSAL FLOATING HUD SIDEBAR (global-sidebar.css)
   Compatible with Light/Dark Themes and Mobile Viewports
   ========================================================================= */

:root {
  --hud-bg: #ffffff;
  --hud-border: #e2e8f0;
  --hud-text: #0f172a;
  --hud-subtext: #64748b;
  --hud-hover: rgba(16, 185, 129, 0.08);
  --hud-accent: #10b981;
  --hud-badge-bg: #f1f5f9;
  --hud-badge-text: #475569;
}

[data-theme="dark"] {
  --hud-bg: #0f172a;
  --hud-border: #334155;
  --hud-text: #f8fafc;
  --hud-subtext: #94a3b8;
  --hud-hover: rgba(16, 185, 129, 0.15);
  --hud-accent: #34d399;
  --hud-badge-bg: #1e293b;
  --hud-badge-text: #94a3b8;
}

/* Floating Action Trigger Button */
.hud-float-btn {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: #ffffff;
  border: none;
  border-radius: 30px;
  padding: 10px 18px;
  font-weight: 700;
  font-size: 0.88rem;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(16, 185, 129, 0.35);
  z-index: 9998;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.2s;
  font-family: inherit;
}

.hud-float-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(16, 185, 129, 0.45);
}

.hud-float-btn kbd {
  background: rgba(0, 0, 0, 0.25);
  padding: 2px 6px;
  border-radius: 6px;
  font-size: 0.72rem;
  font-family: monospace;
}

/* Modal Overlay Backdrop */
.hud-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.hud-overlay.open {
  display: flex;
}

/* Central Command Palette */
.hud-palette {
  background: var(--hud-bg);
  border: 1px solid var(--hud-border);
  border-radius: 20px;
  max-width: 620px;
  width: 100%;
  max-height: 80vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.35);
  color: var(--hud-text);
  font-family: inherit;
  animation: hudScaleIn 0.15s ease-out;
}

@keyframes hudScaleIn {
  from { transform: scale(0.97); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.hud-search-box {
  padding: 16px 20px;
  border-bottom: 1px solid var(--hud-border);
  display: flex;
  align-items: center;
  gap: 12px;
}

.hud-search-box input {
  flex: 1;
  border: none;
  background: transparent;
  outline: none;
  font-size: 1.05rem;
  color: inherit;
  font-family: inherit;
}

.hud-search-box input::placeholder {
  color: var(--hud-subtext);
}

.hud-esc-btn {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--hud-subtext);
  background: var(--hud-badge-bg);
  border: 1px solid var(--hud-border);
  padding: 3px 8px;
  border-radius: 6px;
  cursor: pointer;
}

.hud-content {
  overflow-y: auto;
  padding: 16px 20px;
}

.hud-section-label {
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--hud-subtext);
  margin: 14px 0 6px;
}

.hud-link-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  border-radius: 10px;
  text-decoration: none;
  color: inherit;
  font-size: 0.92rem;
  font-weight: 600;
  transition: background 0.15s, color 0.15s;
}

.hud-link-item:hover {
  background: var(--hud-hover);
  color: var(--hud-accent);
}

.hud-badge {
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: 6px;
  background: var(--hud-badge-bg);
  color: var(--hud-badge-text);
  font-weight: 600;
}

@media (max-width: 600px) {
  .hud-float-btn {
    bottom: 16px;
    right: 16px;
    padding: 8px 14px;
    font-size: 0.8rem;
  }
}