:root { --brand: #10B981; }
html { -webkit-tap-highlight-color: transparent; }
body { font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif; background: #F8FAFC; color: #0F172A; }
.glass { background: rgba(255,255,255,.74); -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
  border: 1px solid rgba(255,255,255,.7); box-shadow: 0 12px 32px -14px rgba(15,23,42,.22); }
.glass-dark { background: rgba(15,23,42,.6); -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
  border: 1px solid rgba(255,255,255,.12); }
.btn-primary { background: var(--brand); color: #fff; font-weight: 700; border-radius: 14px; padding: .85rem 1.25rem;
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem; transition: filter .15s, transform .1s; cursor: pointer; }
.btn-primary:hover { filter: brightness(.93); }
.btn-primary:active { transform: scale(.98); }
.btn-primary:disabled { opacity: .6; cursor: not-allowed; }
.btn-dark { background: #0F172A; color: #fff; font-weight: 700; border-radius: 14px; padding: .85rem 1.25rem;
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem; transition: background .15s; cursor: pointer; }
.btn-dark:hover { background: #1E293B; }
.btn-ghost { background: #fff; color: #0F172A; font-weight: 600; border-radius: 14px; padding: .8rem 1.2rem; border: 1px solid #E2E8F0;
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem; cursor: pointer; }
.btn-ghost:hover { background: #F1F5F9; }
.btn-sm { padding: .45rem .8rem; font-size: .8rem; border-radius: 10px; }
.input { width: 100%; border: 1px solid #E2E8F0; background: #fff; border-radius: 14px; padding: .8rem 1rem; outline: none; font-size: 1rem; }
.input:focus { border-color: #10B981; box-shadow: 0 0 0 4px rgba(16,185,129,.15); }
.label { font-size: .8rem; font-weight: 600; color: #475569; margin-bottom: .35rem; display: block; }
.skeleton { background: linear-gradient(90deg, #E2E8F0 25%, #F1F5F9 37%, #E2E8F0 63%); background-size: 400% 100%;
  animation: sk 1.4s ease infinite; border-radius: 12px; }
@keyframes sk { 0% { background-position: 100% 50%; } 100% { background-position: 0 50%; } }
.tile input { position: absolute; opacity: 0; pointer-events: none; }
.tile > div { border: 2px solid #E2E8F0; background: #fff; border-radius: 16px; transition: all .15s; cursor: pointer; }
.tile input:checked + div { border-color: #10B981; background: #ECFDF5; box-shadow: 0 0 0 4px rgba(16,185,129,.12); }
.tile input:focus-visible + div { outline: 2px solid #0F172A; outline-offset: 2px; }
.wa-float { position: fixed; right: 16px; bottom: 92px; z-index: 60; width: 46px; height: 46px; border-radius: 9999px;
  background: #25D366; color: #fff; display: flex; align-items: center; justify-content: center;
  box-shadow: 0 8px 20px rgba(37,211,102,.45); isolation: isolate; }
.wa-float::after { content: ''; position: absolute; inset: 0; border-radius: 9999px; background: #25D366; opacity: .5;
  animation: wapulse 2s infinite; z-index: -1; }
@keyframes wapulse { 0% { transform: scale(1); opacity: .5; } 100% { transform: scale(1.8); opacity: 0; } }
@media (min-width: 768px) { .wa-float { bottom: 24px; } }
.bottom-nav { padding-bottom: env(safe-area-inset-bottom); }
.hero-bg { background: radial-gradient(1200px 500px at 85% -10%, rgba(16,185,129,.35), transparent 60%),
  radial-gradient(800px 400px at -10% 110%, rgba(16,185,129,.18), transparent 60%), #0F172A; }
.no-scrollbar::-webkit-scrollbar { display: none; }
.no-scrollbar { -ms-overflow-style: none; scrollbar-width: none; }
.receipt-row { display: flex; justify-content: space-between; gap: 1rem; padding: .6rem 0; border-bottom: 1px dashed #E2E8F0; font-size: .92rem; }
@media print { .no-print, .wa-float, nav, header { display: none !important; } body { background: #fff; } }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation: none !important; transition: none !important; } }
[data-install].hidden { display: none !important; }