:root {
  color-scheme: light;
  --bg: #f4f6f8;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --border: #d1d5db;
  --primary: #0f766e;
  --primary-hover: #0d5f58;
  --danger: #b91c1c;
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: linear-gradient(180deg, #e8f3f2 0%, var(--bg) 220px);
  color: var(--text);
  min-height: 100vh;
}

.hidden {
  display: none !important;
}

.screen {
  min-height: 100vh;
}

.login-card {
  max-width: 420px;
  margin: 10vh auto;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.25rem 1.5rem;
  box-shadow: var(--shadow);
}

.layout {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1rem 1rem 2rem;
  display: grid;
  gap: 1rem;
}

.app-header {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.25rem 1rem 0;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
}

h1,
h2 {
  margin: 0 0 0.5rem;
}

h1 {
  font-size: 1.6rem;
}

h2 {
  font-size: 1.1rem;
}

.subtitle,
.meta {
  color: var(--muted);
  margin: 0;
}

label {
  display: grid;
  gap: 0.35rem;
  font-weight: 600;
  font-size: 0.92rem;
}

input,
button {
  font: inherit;
}

input[type="text"],
input[type="password"],
input[type="search"],
input[type="date"] {
  width: 100%;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
}

button {
  border: none;
  border-radius: 10px;
  padding: 0.7rem 1rem;
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  cursor: pointer;
}

button:hover {
  background: var(--primary-hover);
}

button.secondary {
  background: #e5e7eb;
  color: var(--text);
}

button.secondary:hover {
  background: #d1d5db;
}

button.danger {
  background: #fee2e2;
  color: var(--danger);
}

button.danger:hover {
  background: #fecaca;
}

button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.error {
  color: var(--danger);
  margin: 0.5rem 0 0;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.type-tabs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.75rem;
}

.type-tab {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.85rem 1rem;
  cursor: pointer;
  font-weight: 600;
}

.type-tab input {
  margin-right: 0.5rem;
}

.type-tab:has(input:checked) {
  border-color: var(--primary);
  background: #ecfdf5;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.search-label {
  margin-bottom: 0.75rem;
}

.product-list {
  display: grid;
  gap: 0.5rem;
}

.product-row {
  display: grid;
  grid-template-columns: auto 1.4fr 0.8fr 0.9fr auto;
  gap: 0.75rem;
  align-items: center;
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fafafa;
}

.product-row.selected {
  border-color: #99f6e4;
  background: #f0fdfa;
}

.product-name {
  font-weight: 600;
}

.product-row label {
  font-weight: 500;
  font-size: 0.82rem;
}

.actions {
  display: grid;
  gap: 0.75rem;
}

@media (max-width: 800px) {
  .product-row {
    grid-template-columns: 1fr;
  }

  .app-header {
    flex-direction: column;
  }
}