:root {
  --ink: #182220;
  --muted: #65706d;
  --surface: #ffffff;
  --page: #f4f7f6;
  --line: #d9e0dd;
  --line-strong: #b9c4c0;
  --brand-yellow: #ffe200;
  --brand-dark: #111111;
  --teal: #174d52;
  --teal-deep: #0f393d;
  --danger: #a33a2a;
  --success: #166534;
  --radius: 8px;
  --shadow: 0 12px 30px rgba(19, 34, 32, 0.08);
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  min-width: 320px;
  min-height: 100%;
  background: var(--page);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: "Aptos", "Segoe UI", Arial, sans-serif;
  background: linear-gradient(180deg, #f8faf9 0%, var(--page) 100%);
}

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

a {
  color: inherit;
}

.app-shell {
  display: grid;
  grid-template-columns: 268px minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  position: sticky;
  top: 0;
  display: flex;
  flex-direction: column;
  height: 100vh;
  min-height: 0;
  background: var(--brand-dark);
  color: #fff;
}

.brand {
  display: grid;
  gap: 0.2rem;
  padding: 1.2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  text-decoration: none;
}

.brand span,
.kicker,
label span,
.total-grid span,
.stat-card span,
dt {
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.brand span {
  color: var(--brand-yellow);
}

.brand strong {
  font-size: 1.05rem;
}

.nav-links {
  display: grid;
  gap: 0.35rem;
  align-content: start;
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  padding: 0.9rem;
}

.nav-links a {
  border-radius: var(--radius);
  padding: 0.78rem 0.85rem;
  color: rgba(255, 255, 255, 0.84);
  font-weight: 800;
  text-decoration: none;
}

.nav-links a.active,
.nav-links a:hover {
  color: var(--brand-dark);
  background: var(--brand-yellow);
}

.sidebar-footer {
  display: grid;
  gap: 0.75rem;
  padding: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}

.main {
  display: grid;
  align-content: start;
  gap: 1rem;
  width: min(1280px, 100%);
  padding: 1.1rem;
}

.topbar,
.panel-heading {
  display: flex;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
}

.topbar {
  padding: 1.1rem;
  border-radius: var(--radius);
  color: #fff;
  background: var(--teal-deep);
}

.topbar .kicker,
.topbar h1 {
  color: #fff;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0;
  font-size: clamp(1.45rem, 3vw, 2.15rem);
  line-height: 1.1;
}

h2 {
  margin-bottom: 0;
  font-size: 1.22rem;
}

.muted {
  color: var(--muted);
  line-height: 1.5;
}

.panel {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.page-grid {
  display: grid;
  gap: 1rem;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.85rem;
}

.stat-card {
  display: grid;
  gap: 0.35rem;
}

.stat-card strong {
  font-size: 1.8rem;
}

.order-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(340px, 0.65fr);
  gap: 1rem;
  align-items: start;
}

.cart-panel {
  position: sticky;
  top: 1rem;
  display: grid;
  gap: 1rem;
}

.panel-heading {
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--line);
}

.table-wrap {
  width: 100%;
  overflow: auto;
}

.data-table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
}

.data-table th {
  padding: 0.75rem;
  color: #fff;
  text-align: left;
  background: var(--teal);
}

.data-table td {
  border-bottom: 1px solid var(--line);
  padding: 0.75rem;
  vertical-align: top;
}

.data-table td span,
.data-table td small,
.record-main span,
.record-main small,
.cart-row span,
.cart-row small {
  display: block;
  color: var(--muted);
}

label {
  display: grid;
  gap: 0.4rem;
  min-width: 0;
}

input,
select,
textarea {
  width: 100%;
  min-width: 0;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 0.72rem 0.78rem;
  color: var(--ink);
  background: #fff;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(255, 226, 0, 0.28);
}

textarea {
  min-height: 92px;
  resize: vertical;
}

.search-field {
  width: min(360px, 100%);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.field-wide {
  grid-column: 1 / -1;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.55rem;
  border: 0;
  border-radius: var(--radius);
  padding: 0.68rem 0.95rem;
  cursor: pointer;
  font-weight: 900;
  text-decoration: none;
}

.button-primary {
  color: var(--brand-dark);
  background: var(--brand-yellow);
}

.button-secondary {
  color: var(--ink);
  background: #edf2f0;
  border: 1px solid var(--line);
}

.button:disabled {
  cursor: not-allowed;
  opacity: 0.62;
}

.submit-button {
  width: 100%;
}

.cart-list,
.record-list {
  display: grid;
  gap: 0.65rem;
}

.cart-row,
.record-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.75rem;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.75rem;
  background: #fbfcfc;
}

.record-main {
  display: grid;
  gap: 0.25rem;
  text-decoration: none;
}

.record-meta,
.cart-controls {
  display: grid;
  gap: 0.45rem;
  justify-items: end;
}

.qty-input {
  width: 5.4rem;
}

.total-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.55rem 1rem;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 0.85rem 0;
}

.badge {
  border-radius: 999px;
  padding: 0.35rem 0.65rem;
  color: #8a5a00;
  background: #fff1cc;
  font-size: 0.78rem;
  font-weight: 900;
  white-space: nowrap;
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.75rem;
  margin: 0;
}

.detail-grid div {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.75rem;
  background: #fbfcfc;
}

.detail-grid dd {
  margin: 0.25rem 0 0;
  font-weight: 900;
  overflow-wrap: anywhere;
}

.empty-state,
.locked-state {
  color: var(--muted);
}

.message {
  min-height: 1.25rem;
  margin: 0;
  color: var(--muted);
  font-weight: 800;
}

.message.success {
  color: var(--success);
}

.message.error {
  color: var(--danger);
}

.login-page {
  display: grid;
  place-items: center;
  min-height: 100vh;
  padding: 1rem;
}

.login-card {
  width: min(440px, 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.3rem;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.login-form {
  display: grid;
  gap: 0.85rem;
}

.support-line {
  margin: 1rem 0 0;
  color: var(--muted);
}

@media (max-width: 980px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    height: auto;
  }

  .nav-links {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .order-layout,
  .stat-grid,
  .detail-grid {
    grid-template-columns: 1fr;
  }

  .cart-panel {
    position: static;
  }
}

@media (max-width: 640px) {
  .main {
    padding: 0.75rem;
  }

  .topbar,
  .panel-heading,
  .cart-row,
  .record-card {
    align-items: stretch;
    flex-direction: column;
    grid-template-columns: 1fr;
  }

  .nav-links {
    grid-template-columns: 1fr 1fr;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }
}