/* ============================================================================
   UNIFIED LOADING & ERROR STATES
   ============================================================================ */

/* --- Full-page loading container --- */
.loading-state {
  display: flex;
  align-items: center;
  justify-content: center;
  min-block-size: 60vh;
  flex-direction: column;
  gap: 1.25rem;
}

/* --- Unified Spinner (dual-ring) --- */
.spinner {
  position: relative;
  inline-size: 2.25rem;
  block-size: 2.25rem;
}

.spinner::before,
.spinner::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
}

/* Track ring */
.spinner::before {
  border: 2.5px solid var(--border);
}

/* Accent arc */
.spinner::after {
  border: 2.5px solid transparent;
  border-block-start-color: var(--accent);
  border-inline-end-color: var(--accent);
  animation: spin 0.75s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* --- Loading text --- */
.loading-text {
  color: var(--secondary);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.01em;
}

/* --- Inline spinner (for status bars, buttons) --- */
.spinner-inline {
  display: inline-block;
  position: relative;
  inline-size: 1rem;
  block-size: 1rem;
  vertical-align: middle;
  margin-inline-end: 0.5rem;
}

.spinner-inline::before,
.spinner-inline::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
}

.spinner-inline::before {
  border: 2px solid var(--border);
}

.spinner-inline::after {
  border: 2px solid transparent;
  border-block-start-color: var(--accent);
  border-inline-end-color: var(--accent);
  animation: spin 0.75s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

/* --- Loading dots (3-dot pulse) --- */
.loading-dots {
  display: inline-flex;
  gap: 0.3rem;
  align-items: center;
}

.loading-dots span {
  inline-size: 0.375rem;
  block-size: 0.375rem;
  border-radius: 50%;
  background: var(--accent);
  animation: dotPulse 1.4s infinite ease-in-out;
}

.loading-dots span:nth-child(2) { animation-delay: 0.15s; }
.loading-dots span:nth-child(3) { animation-delay: 0.3s; }

@keyframes dotPulse {
  0%, 80%, 100% {
    transform: scale(0.6);
    opacity: 0.35;
  }
  40% {
    transform: scale(1);
    opacity: 1;
  }
}

/* --- Error state --- */
.error-state {
  display: flex;
  align-items: center;
  justify-content: center;
  min-block-size: 60vh;
  flex-direction: column;
  text-align: center;
}

.error-icon {
  font-size: 3rem;
  margin-block-end: 1rem;
}

.error-state h2 {
  color: var(--primary);
  margin-block-end: 0.5rem;
}

.error-state p {
  color: var(--secondary);
  margin-block-end: 1.5rem;
}

.retry-btn {
  background: var(--accent);
  color: white;
  border: none;
  padding: 0.75rem 2rem;
  border-radius: 0.375rem;
  cursor: pointer;
  font-weight: 600;
  transition: opacity 0.2s;
}

.retry-btn:hover {
  opacity: 0.8;
}