/* Catalyst Knowledge Graph (Robotics module) — guards.css (ticket 1.13f)
   Styling for banner, empty-state, and loading overlay.
   Uses design tokens from :root in frontend/index.html. */

/* ── Banner ────────────────────────────────────────────────── */
.robotics-guards-banner {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px 10px 14px;
  font-family: 'Inter', -apple-system, sans-serif;
  font-size: 13px;
  font-weight: 500;
  line-height: 1.4;
  color: var(--text, #1c1917);
  border-bottom: 1px solid var(--border, #ddd8cf);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
  animation: robotics-guards-slide-down 180ms ease-out;
}

.robotics-guards-banner--error {
  background: #fdecec;
  border-left: 4px solid var(--down, #dc2626);
}

.robotics-guards-banner--warn {
  background: #fdf4e7;
  border-left: 4px solid var(--accent-regulatory, #d97706);
}

.robotics-guards-banner--info {
  background: #e7f5fd;
  border-left: 4px solid var(--accent, #0ea5e9);
}

.robotics-guards-banner__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  font-weight: 600;
  color: #fff;
  flex-shrink: 0;
}

.robotics-guards-banner--error .robotics-guards-banner__icon { background: var(--down, #dc2626); }
.robotics-guards-banner--warn .robotics-guards-banner__icon { background: var(--accent-regulatory, #d97706); }
.robotics-guards-banner--info .robotics-guards-banner__icon { background: var(--accent, #0ea5e9); }

.robotics-guards-banner__msg { flex: 1; min-width: 0; }

.robotics-guards-banner__close {
  background: transparent;
  border: none;
  cursor: pointer;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 18px;
  line-height: 1;
  color: var(--text-secondary, #57534e);
  padding: 2px 8px;
  border-radius: 4px;
  transition: background 120ms ease, color 120ms ease;
}
.robotics-guards-banner__close:hover {
  background: rgba(0, 0, 0, 0.06);
  color: var(--text, #1c1917);
}

@keyframes robotics-guards-slide-down {
  from { transform: translateY(-100%); opacity: 0; }
  to   { transform: translateY(0); opacity: 1; }
}

/* ── Empty state ──────────────────────────────────────────── */
.robotics-guards-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 12px;
  padding: 48px 24px;
  min-height: 240px;
  width: 100%;
  height: 100%;
  color: var(--text-secondary, #57534e);
  font-family: 'Inter', -apple-system, sans-serif;
}

.robotics-guards-empty-icon {
  color: var(--text-muted, #a8a29e);
  opacity: 0.7;
  animation: robotics-guards-spin 24s linear infinite;
}

.robotics-guards-empty__title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text, #1c1917);
  letter-spacing: -0.01em;
}

.robotics-guards-empty__helper {
  font-size: 13px;
  font-weight: 400;
  color: var(--text-muted, #a8a29e);
  max-width: 360px;
  line-height: 1.5;
}

.robotics-guards-empty__cta {
  margin-top: 6px;
  padding: 8px 16px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--text, #1c1917);
  background: var(--bg-card, #fdfcfa);
  border: 1px solid var(--border, #ddd8cf);
  border-radius: 999px;
  cursor: pointer;
  transition: border-color 120ms ease, background 120ms ease, transform 120ms ease;
}
.robotics-guards-empty__cta:hover {
  border-color: var(--border-focus, #0ea5e9);
  background: #fff;
}
.robotics-guards-empty__cta:active { transform: translateY(1px); }

@keyframes robotics-guards-spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

/* ── Loading overlay ──────────────────────────────────────── */
.robotics-guards-loading {
  position: fixed;
  inset: 0;
  z-index: 1100;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(243, 241, 237, 0.75);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  opacity: 0;
  transition: opacity 150ms ease-out;
  pointer-events: all;
}

.robotics-guards-loading--hiding {
  transition: opacity 200ms ease-out;
  pointer-events: none;
}

.robotics-guards-loading__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  padding: 20px 28px;
  background: var(--bg-card, #fdfcfa);
  border: 1px solid var(--border, #ddd8cf);
  border-radius: var(--radius, 14px);
  box-shadow: var(--shadow, 0 1px 3px rgba(0,0,0,0.04), 0 4px 14px rgba(0,0,0,0.05));
  min-width: 200px;
}

.robotics-guards-loading__glyph {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 18px;
  font-weight: 500;
  color: var(--accent, #0ea5e9);
  letter-spacing: 0.05em;
  user-select: none;
}

.robotics-guards-loading__msg {
  font-family: 'Inter', -apple-system, sans-serif;
  font-size: 13px;
  font-weight: 400;
  color: var(--text-secondary, #57534e);
}

/* ── Reduced motion ───────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .robotics-guards-banner,
  .robotics-guards-empty-icon,
  .robotics-guards-loading,
  .robotics-guards-loading--hiding {
    animation: none !important;
    transition: none !important;
  }
}