/**
 * CoreX UI Components — Glacier glassmorphism
 * Requires tokens.css
 */

/* Focus visibility (keyboard) */
:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -100%;
  z-index: 9999;
  padding: 0.75rem 1.25rem;
  background: var(--color-primary);
  color: var(--color-on-primary);
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.875rem;
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: top var(--duration-fast) var(--ease-out);
}

.skip-link:focus {
  top: 1rem;
}

/* Glass panel / card */
.product-panel,
.cx-panel {
  background: var(--color-glass);
  backdrop-filter: blur(var(--blur-glass));
  -webkit-backdrop-filter: blur(var(--blur-glass));
  border: 1px solid var(--border-primary);
  box-shadow: var(--glow-primary);
  border-radius: var(--radius-lg);
}

.cx-panel--elevated {
  background: var(--color-glass-elevated);
  backdrop-filter: blur(var(--blur-elevated));
  -webkit-backdrop-filter: blur(var(--blur-elevated));
}

.glass-nav {
  background: rgba(10, 14, 26, 0.75);
  backdrop-filter: blur(var(--blur-elevated));
  -webkit-backdrop-filter: blur(var(--blur-elevated));
  border-bottom: 1px solid var(--border-subtle);
}

/* Buttons */
.cx-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 700;
  line-height: 1.2;
  cursor: pointer;
  border: 1px solid transparent;
  transition:
    background var(--duration-base) var(--ease-out),
    border-color var(--duration-base) var(--ease-out),
    box-shadow var(--duration-base) var(--ease-out),
    transform var(--duration-fast) var(--ease-out),
    opacity var(--duration-fast) var(--ease-out);
}

.cx-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.cx-btn--primary {
  background: rgba(var(--color-primary-rgb), 0.2);
  border-color: var(--border-primary-strong);
  color: var(--color-primary);
}

.cx-btn--primary:hover:not(:disabled) {
  background: rgba(var(--color-primary-rgb), 0.35);
  box-shadow: var(--glow-primary-strong);
}

.cx-btn--solid {
  background: var(--color-primary);
  color: var(--color-on-primary);
  border-color: var(--color-primary);
}

.cx-btn--solid:hover:not(:disabled) {
  box-shadow: var(--glow-primary-strong);
  filter: brightness(1.05);
}

.cx-btn--ghost {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--border-subtle);
  color: var(--color-on-surface);
  backdrop-filter: blur(8px);
}

.cx-btn--ghost:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.15);
}

.cx-btn--nav {
  padding: 0.5rem 1.25rem;
  font-size: 0.75rem;
}

/* Inputs */
.cx-input,
.cx-select {
  width: 100%;
  background: var(--color-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  color: var(--color-on-surface);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  transition:
    border-color var(--duration-base) var(--ease-out),
    box-shadow var(--duration-base) var(--ease-out);
}

.cx-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%239aabc4' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.9rem center;
  padding-right: 2.25rem;
}

.cx-select option {
  background: #0f1524;
  color: #e8eef8;
}

.cx-input::placeholder {
  color: var(--color-on-surface-muted);
}

/* Mobile nav */
#mobile-nav:not([hidden]) {
  display: block;
}

#mobile-nav[hidden] {
  display: none !important;
}

/* Chat on small screens: keep above safe area */
#corex-chat-widget {
  padding-bottom: env(safe-area-inset-bottom, 0);
}

.cx-input:hover,
.cx-select:hover {
  border-color: rgba(255, 255, 255, 0.15);
}

.cx-input:focus,
.cx-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary), var(--glow-primary);
}

.cx-label {
  display: block;
  margin-bottom: 0.5rem;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-on-surface-variant);
}

/* Skeleton loaders */
.cx-skeleton {
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.04) 0%,
    rgba(125, 211, 252, 0.08) 50%,
    rgba(255, 255, 255, 0.04) 100%
  );
  background-size: 200% 100%;
  animation: cx-shimmer 1.4s ease-in-out infinite;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
}

.cx-skeleton--text {
  height: 0.875rem;
  width: 100%;
}

.cx-skeleton--title {
  height: 1.5rem;
  width: 60%;
}

.cx-skeleton--kpi {
  height: 4.5rem;
  width: 100%;
}

.cx-skeleton--avatar {
  width: 2rem;
  height: 2rem;
  border-radius: 9999px;
}

@keyframes cx-shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

@media (prefers-reduced-motion: reduce) {
  .cx-skeleton {
    animation: none;
    background: rgba(255, 255, 255, 0.06);
  }
}

/* Text contrast helpers (replace white/40 where AA fails) */
.text-muted {
  color: var(--color-on-surface-muted);
}

.text-secondary {
  color: var(--color-on-surface-variant);
}

/* Lazy section placeholder */
.cx-lazy-section[data-lazy="pending"] .cx-lazy-content {
  display: none;
}

.cx-lazy-section[data-lazy="pending"] .cx-lazy-skeleton {
  display: block;
}

.cx-lazy-section[data-lazy="loaded"] .cx-lazy-skeleton {
  display: none;
}

.cx-lazy-section[data-lazy="loaded"] .cx-lazy-content {
  display: block;
  animation: cx-fade-in var(--duration-slow) var(--ease-out);
}

@keyframes cx-fade-in {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}