* {
  box-sizing: border-box;
}

:root {
  color-scheme: light;
}

body {
  margin: 0;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  background: radial-gradient(circle at top left, #f8fafc 0%, #eef2f7 45%, #e2e8f0 100%);
  color: #0f172a;
}

h1,
h2,
h3,
strong {
  margin: 0;
}

p {
  margin: 0;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid #e2e8f0;
  backdrop-filter: blur(10px);
}

.brand h1 {
  font-size: 20px;
  font-weight: 700;
}

.brand p {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: #64748b;
}

.nav-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tab-btn {
  border: 1px solid #e2e8f0;
  background: #f1f5f9;
  color: #334155;
  padding: 8px 16px;
  border-radius: 999px;
  font-weight: 700;
  transition: all 0.15s ease;
}

.tab-btn.active {
  background: #0f172a;
  color: #fff;
  border-color: #0f172a;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px;
}

.page {
  display: none;
}

.page.active {
  display: block;
}

.grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.panel {
  background: #fff;
  border-radius: 20px;
  padding: 16px;
  box-shadow: 0 18px 50px rgba(15, 23, 42, 0.08);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.panel-head {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
}

.eyebrow {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: #94a3b8;
  font-weight: 700;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  border-radius: 999px;
  border: 1px solid #e2e8f0;
  padding: 6px 14px;
  font-size: 13px;
  font-weight: 700;
  color: #334155;
  background: #f8fafc;
}

.chip.active {
  background: #0f172a;
  color: #fff;
  border-color: #0f172a;
}

.menu-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
}

.item-card {
  border: 1px solid #e2e8f0;
  border-radius: 16px;
  padding: 12px;
  background: #fff;
  text-align: left;
  font-weight: 700;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.item-card span {
  display: block;
}

.item-card small {
  display: block;
  color: #64748b;
  margin-top: 6px;
  font-weight: 600;
}

.item-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(15, 23, 42, 0.08);
}

.stack {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.card {
  border: 1px solid #e2e8f0;
  border-radius: 16px;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  font-weight: 700;
  color: #475569;
}

.field input,
.field textarea,
.item-form input,
.item-form select,
.inline-form input {
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 10px 12px;
  font-size: 14px;
}

.totals,
.summary {
  background: #f8fafc;
  border-radius: 16px;
  padding: 12px;
  font-size: 14px;
  font-weight: 700;
}

.payment {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.btn {
  border-radius: 999px;
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 700;
  border: 1px solid transparent;
}

.btn-primary {
  background: #10b981;
  color: #fff;
  border-color: #10b981;
}

.btn-outline {
  background: #fff;
  color: #334155;
  border-color: #e2e8f0;
}

.btn-danger {
  background: #fff;
  color: #dc2626;
  border-color: #fecaca;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.inline-form {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.item-form {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  align-items: center;
}

.checkbox {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 700;
  color: #334155;
}

.qty-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.qty-btn {
  width: 32px;
  height: 32px;
  border-radius: 999px;
  border: 1px solid #e2e8f0;
  background: #fff;
  font-weight: 700;
}

.placeholder {
  border: 1px dashed #e2e8f0;
  border-radius: 16px;
  padding: 12px;
  color: #64748b;
  font-size: 14px;
}

@media (max-width: 720px) {
  .topbar {
    padding: 12px 16px;
  }

  .container {
    padding: 16px;
  }
}