@layer components {
  .tw-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    border-radius: var(--radius-md);
    font-weight: 500;
    transition: all 0.15s ease;
    touch-action: manipulation;
    text-decoration: none;
  }
  .tw-btn:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
  }
  .tw-btn:disabled {
    pointer-events: none;
    opacity: 0.5;
  }
  .tw-btn-sm { padding: 0.375rem 0.75rem; font-size: 0.75rem; }
  .tw-btn-md { padding: 0.5rem 1rem; font-size: 0.875rem; }
  .tw-btn-lg { padding: 0.625rem 1.25rem; font-size: 1rem; }
  .tw-btn-touch { min-height: 2.75rem; padding: 0.75rem 1.25rem; font-size: 1rem; }

  .tw-btn-primary,
  .tw-btn-secondary,
  .tw-btn-outline,
  .tw-btn-ghost,
  .tw-btn-danger,
  .tw-btn-success {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    border-radius: var(--radius-md);
    font-weight: 500;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    transition: all 0.15s ease;
    touch-action: manipulation;
    text-decoration: none;
  }
  .tw-btn-primary:hover,
  .tw-btn-secondary:hover,
  .tw-btn-outline:hover,
  .tw-btn-ghost:hover,
  .tw-btn-danger:hover,
  .tw-btn-success:hover {
    text-decoration: none;
  }
  .tw-btn-primary {
    background: linear-gradient(135deg, var(--color-primary), color-mix(in srgb, var(--color-primary) 72%, #0c1220));
    color: #fff;
    box-shadow: 0 8px 18px color-mix(in srgb, var(--color-primary) 24%, transparent);
  }
  .tw-btn-primary:hover { background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary)); }
  .tw-btn-secondary { background: var(--color-secondary); color: #fff; }
  .tw-btn-outline {
    border: 1px solid var(--color-border);
    background: var(--color-card);
    color: var(--color-text);
  }
  .tw-btn-outline:hover { background: var(--color-bg); }
  .tw-btn-ghost { background: transparent; color: var(--color-text); }
  .tw-btn-ghost:hover { background: rgba(0,0,0,0.05); }
  .tw-btn-danger { background: var(--color-danger); color: #fff; }
  .tw-btn-success { background: var(--color-success); color: #fff; }

  .tw-input {
    width: 100%;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    background: var(--color-card);
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    color: var(--color-text);
  }
  .tw-input:focus {
    border-color: var(--color-primary);
    outline: none;
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-primary) 30%, transparent);
  }
  .tw-label {
    display: block;
    margin-bottom: 0.25rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--color-text-muted);
  }
  .tw-card {
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    background: var(--color-card);
    box-shadow: var(--shadow-sm);
    overflow: clip;
  }
  .tw-badge {
    display: inline-flex;
    align-items: center;
    border-radius: 9999px;
    padding: 0.125rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 500;
  }
  .tw-table-wrap {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
  }
  .tw-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.875rem;
  }
  .tw-table thead {
    position: sticky;
    top: 0;
    background: var(--color-bg);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--color-text-muted);
  }
  .tw-table th,
  .tw-table td {
    border-bottom: 1px solid var(--color-border);
    padding: 0.625rem 0.75rem;
    vertical-align: middle;
  }
  .tw-alert {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    padding: 0.625rem 0.75rem;
    font-size: 0.875rem;
  }
  .tw-page { padding: 1rem; }
  @media (min-width: 768px) { .tw-page { padding: 1.5rem; } }
  .tw-page-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    margin-bottom: 1rem;
  }
  .tw-page-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text);
  }
  .tw-skeleton {
    animation: pulse 1.5s ease-in-out infinite;
    border-radius: var(--radius-md);
    background: rgba(0,0,0,0.08);
  }
  .tw-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 3rem 1rem;
    text-align: center;
    color: var(--color-text-muted);
  }
  @keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
  }
}