/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  border-radius: var(--radius-sm);
  padding: 12px 18px;
  font-weight: 700;
  transition: transform var(--dur-1) var(--ease), box-shadow var(--dur-1) var(--ease), background var(--dur-1) var(--ease);
  background: #fff;
  border: 1.5px solid var(--line);
  color: var(--ink);
}
.btn:hover { box-shadow: var(--shadow-sm); }
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--grad-orange);
  color: #fff;
  border: none;
  box-shadow: 0 6px 14px rgba(242,106,0,.35);
}
.btn-primary:hover { box-shadow: 0 10px 22px rgba(242,106,0,.45); }
.btn-primary:disabled, .btn:disabled { opacity: .5; cursor: not-allowed; transform: none; box-shadow: none; }
.btn-ghost { background: transparent; }
.btn-block { width: 100%; }
.btn-lg { padding: 16px 22px; font-size: 17px; }
.btn-sm { padding: 8px 12px; font-size: 14px; }

/* Cards */
.card {
  background: var(--card);
  border: 1.5px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  margin: 12px 0;
  box-shadow: var(--shadow-sm);
}

/* Banners */
.banner { padding: 12px 14px; border-radius: var(--radius-sm); margin: 8px 0 12px; font-size: 14px; }
.banner-warn { background: #fff4e6; border: 1.5px solid #f0c79a; color: #7a3b00; }
.banner-ok { background: #e8f6ee; border: 1.5px solid #9dd6b3; color: #145c34; }
.banner-bad { background: #fbe9e9; border: 1.5px solid #e6a5a5; color: #7a1010; }

/* Fields */
.field { display: block; margin: 10px 0; }
.field > span { display: block; font-size: 13px; font-weight: 700; color: var(--muted); margin-bottom: 6px; }
.postcode-row { display: flex; gap: 8px; }
.postcode-row input { flex: 1; }
.postcode-status { font-size: 13px; min-height: 18px; margin: 6px 0; color: var(--muted); }
.postcode-status.ok { color: var(--ok); font-weight: 700; }
.postcode-status.bad { color: var(--bad); font-weight: 700; }

/* Chips */
.chip-group { display: flex; gap: 8px; flex-wrap: wrap; }
.chip {
  background: #fff;
  border: 1.5px solid var(--line);
  border-radius: 999px;
  padding: 10px 14px;
  font-weight: 700;
  color: var(--ink);
  transition: all var(--dur-1) var(--ease);
}
.chip[aria-checked="true"], .chip.active {
  background: var(--grad-orange);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 4px 10px rgba(242,106,0,.35);
}

/* Toasts */
.toasts {
  position: fixed;
  top: max(env(safe-area-inset-top), 12px);
  left: 0; right: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  pointer-events: none;
  z-index: 60;
}
.toast {
  background: var(--navy);
  color: #fff;
  padding: 10px 16px;
  border-radius: 999px;
  box-shadow: var(--shadow);
  font-weight: 600;
  font-size: 14px;
  animation: toastIn var(--dur-3) var(--ease);
  pointer-events: auto;
}
.toast.bad { background: var(--bad); }
.toast.ok { background: var(--ok); }

/* Skeletons */
.skeleton {
  background: linear-gradient(90deg, #f0e6d2 0%, #faf2dc 50%, #f0e6d2 100%);
  background-size: 200% 100%;
  animation: shimmer 1.4s ease-in-out infinite;
  border-radius: 10px;
}
.skel-card { height: 80px; margin: 10px 0; }

/* Sheets / drawers */
.drawer-backdrop, .sheet-backdrop {
  position: fixed; inset: 0;
  background: rgba(14,30,51,.55);
  backdrop-filter: blur(2px);
  z-index: 40;
  animation: fadeIn var(--dur-2) var(--ease);
}
.drawer, .sheet {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  background: #fff;
  border-radius: 24px 24px 0 0;
  box-shadow: var(--shadow-lg);
  z-index: 50;
  transform: translateY(100%);
  transition: transform var(--dur-3) var(--ease);
  max-height: 88dvh;
  display: flex;
  flex-direction: column;
}
.drawer.open, .sheet.open { transform: translateY(0); }
.drawer-handle, .sheet-handle {
  width: 44px; height: 5px;
  background: #ddd;
  border-radius: 999px;
  margin: 10px auto 4px;
}
.drawer-title { padding: 4px 18px 8px; margin: 0; color: var(--navy); }
.drawer-items, .sheet-inner { padding: 8px 18px; overflow-y: auto; flex: 1; }
.drawer-foot {
  padding: 12px 18px max(env(safe-area-inset-bottom), 16px);
  border-top: 1.5px solid var(--line);
  background: var(--paper);
  border-radius: 0;
}
.drawer-totals { margin-bottom: 10px; }
.drawer-totals .row { display: flex; justify-content: space-between; padding: 2px 0; }
.drawer-totals .row.total { font-weight: 900; font-size: 18px; color: var(--navy); }
.drawer-totals .min-warn {
  margin-top: 10px;
  background: #fff4e6;
  border: 1.5px solid #f0c79a;
  color: #7a3b00;
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 13px;
  font-weight: 700;
  text-align: center;
}