/* Pylot UI Design System (scoped classes only) */
:root {
  --ui-space-1: 4px;
  --ui-space-2: 8px;
  --ui-space-3: 12px;
  --ui-space-4: 16px;
  --ui-space-5: 24px;
  --ui-space-6: 32px;

  --ui-radius-sm: 10px;
  --ui-radius-md: 12px;
  --ui-radius-lg: 16px;

  --ui-shadow-sm: 0 6px 14px rgba(0, 0, 0, 0.25);
  --ui-shadow-md: 0 10px 24px rgba(0, 0, 0, 0.32);
  --ui-shadow-lg: 0 18px 40px rgba(0, 0, 0, 0.38);

  --ui-border: rgba(255, 255, 255, 0.08);
  --ui-border-strong: rgba(255, 255, 255, 0.14);

  --ui-text-strong: #ffffff;
  --ui-text-muted: #a8a8a8;

  --ui-accent: var(--accent, #fee900);
  --ui-accent-hover: var(--accent-hover, #e0d100);
}

/* App shell */
.ui-shell {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.ui-topbar {
  width: min(1200px, 100%);
  margin: 0 auto;
  padding: 18px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.ui-topbar-left,
.ui-topbar-right {
  display: flex;
  align-items: center;
  gap: 14px;
}

.ui-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.ui-brand-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--ui-text-strong);
  letter-spacing: 0.01em;
}

.ui-page {
  width: min(1200px, 100%);
  margin: 0 auto;
  padding: 24px 32px 80px;
}

.ui-page-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}

.ui-page-title {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 6px;
}

.ui-page-subtitle {
  color: var(--ui-text-muted);
  font-size: 14px;
}

/* Cards */
.ui-card {
  background: rgba(26, 26, 26, 0.75);
  border: 1px solid var(--ui-border);
  border-radius: var(--ui-radius-md);
  box-shadow: var(--ui-shadow-sm);
  padding: 20px;
  backdrop-filter: blur(8px);
}

.ui-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.ui-card-title {
  font-size: 16px;
  font-weight: 600;
}

.ui-card-desc {
  font-size: 12px;
  color: var(--ui-text-muted);
}

/* Buttons */
.ui-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 10px;
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease, color 160ms ease;
}

.ui-btn:active {
  transform: translateY(1px);
}

.ui-btn:focus-visible {
  outline: 2px solid rgba(254, 233, 0, 0.6);
  outline-offset: 2px;
}

.ui-btn-primary {
  background: var(--ui-accent);
  color: #0a0a0a;
  border-color: rgba(255, 255, 255, 0.06);
}

.ui-btn-primary:hover {
  background: var(--ui-accent-hover);
}

.ui-btn-secondary {
  background: rgba(255, 255, 255, 0.04);
  color: var(--ui-text-strong);
  border-color: var(--ui-border);
}

.ui-btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--ui-border-strong);
}

.ui-btn-ghost {
  background: transparent;
  color: var(--ui-text-muted);
  border-color: var(--ui-border);
}

.ui-btn-ghost:hover {
  color: var(--ui-text-strong);
  border-color: var(--ui-border-strong);
}

.ui-btn-danger {
  background: rgba(255, 80, 80, 0.15);
  color: #ff6b6b;
  border-color: rgba(255, 80, 80, 0.35);
}

/* Fields */
.ui-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.ui-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--ui-text-strong);
  letter-spacing: 0.02em;
}

.ui-helper {
  font-size: 11px;
  color: var(--ui-text-muted);
}

.ui-input,
.ui-select,
.ui-textarea {
  background: rgba(0, 0, 0, 0.28);
  border: 1px solid var(--ui-border);
  color: var(--ui-text-strong);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 14px;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

.ui-input:focus,
.ui-select:focus,
.ui-textarea:focus {
  outline: none;
  border-color: rgba(254, 233, 0, 0.6);
  box-shadow: 0 0 0 2px rgba(254, 233, 0, 0.2);
}

/* Badges & status */
.ui-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.06);
  color: var(--ui-text-strong);
  border: 1px solid var(--ui-border);
}

.ui-badge-accent {
  background: rgba(254, 233, 0, 0.18);
  border-color: rgba(254, 233, 0, 0.35);
}

.ui-status {
  font-size: 12px;
  color: var(--ui-text-muted);
}

/* Skeletons */
.ui-skeleton {
  position: relative;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 10px;
}

.ui-skeleton::after {
  content: '';
  position: absolute;
  inset: 0;
  transform: translateX(-100%);
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.08), transparent);
  animation: ui-skeleton 1.4s infinite;
}

.ui-skeleton-line {
  height: 12px;
  border-radius: 8px;
}

.ui-skeleton-card {
  height: 140px;
  border-radius: var(--ui-radius-md);
}

@keyframes ui-skeleton {
  100% { transform: translateX(100%); }
}

/* Layout helpers */
.ui-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.ui-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

@media (max-width: 900px) {
  .ui-topbar {
    padding: 16px 20px;
  }
  .ui-page {
    padding: 20px 20px 60px;
  }
  .ui-grid-2,
  .ui-grid-3 {
    grid-template-columns: 1fr;
  }
}