:root {
  --primary: #2f7a5f;
  --primary-dark: #225c47;
  --bg: #f6f8f7;
  --card: #ffffff;
  --border: #dbe4e0;
  --text: #223028;
  --danger: #b3261e;
  --warn: #a15c00;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Noto Sans Thai", "Sarabun", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
}

header {
  background: var(--primary);
  color: white;
  padding: 0.75rem 1.5rem;
}

header h1 { margin: 0 0 0.5rem 0; font-size: 1.3rem; }
header h1 a { color: white; text-decoration: none; }

nav a {
  color: white;
  text-decoration: none;
  margin-right: 1rem;
  font-size: 0.95rem;
  opacity: 0.9;
}
nav a:hover { opacity: 1; text-decoration: underline; }

main {
  max-width: 1180px;
  margin: 1.5rem auto;
  padding: 0 1rem;
}

h2 { color: var(--primary-dark); }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem 1.25rem;
  margin-bottom: 1rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card);
  border-radius: 8px;
  overflow: hidden;
}

th, td {
  padding: 0.5rem 0.7rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
  font-size: 0.92rem;
}

th { background: #eef4f1; color: var(--primary-dark); }

tr:last-child td { border-bottom: none; }

form label {
  display: block;
  margin-top: 0.75rem;
  font-weight: 600;
  font-size: 0.9rem;
}

input, select {
  width: 100%;
  padding: 0.45rem 0.6rem;
  margin-top: 0.25rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.95rem;
}

button {
  margin-top: 1rem;
  background: var(--primary);
  color: white;
  border: none;
  padding: 0.55rem 1.2rem;
  border-radius: 6px;
  font-size: 0.95rem;
  cursor: pointer;
}
button:hover { background: var(--primary-dark); }

.flash {
  padding: 0.6rem 1rem;
  border-radius: 6px;
  margin-bottom: 1rem;
  font-size: 0.9rem;
}
.flash-success { background: #e4f4ea; color: var(--primary-dark); border: 1px solid #b8e0c7; }
.flash-error { background: #fbe9e7; color: var(--danger); border: 1px solid #f1c3bd; }

.error-box {
  background: #fbe9e7;
  color: var(--danger);
  border: 1px solid #f1c3bd;
  border-radius: 6px;
  padding: 0.6rem 1rem;
  margin-top: 0.75rem;
  font-size: 0.88rem;
}

form.inline {
  display: flex;
  gap: 0.4rem;
  align-items: center;
  margin: 0;
}
form.inline input { margin-top: 0; }
form.inline button { margin-top: 0; }
td.actions { white-space: nowrap; }
td.actions a, td.actions form.inline { display: inline-flex; margin-right: 0.4rem; vertical-align: middle; }
.input-qty { width: 5.5rem; }
.btn-small { padding: 0.3rem 0.7rem; font-size: 0.85rem; }
.btn-danger { background: var(--danger); }
.btn-danger:hover { background: #8c1d17; }
.btn-link { margin-left: 0.75rem; color: var(--primary-dark); font-size: 0.9rem; }
.hint { margin-top: 0.6rem; font-size: 0.85rem; color: #666; }

.drug-picker { position: relative; }
.dp-list {
  position: absolute;
  z-index: 10;
  left: 0;
  right: 0;
  max-height: 22rem;
  overflow-y: auto;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 6px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.12);
  margin-top: 2px;
}
.dp-option { padding: 0.45rem 0.7rem; cursor: pointer; border-bottom: 1px solid #eef2f0; }
.dp-option:last-child { border-bottom: none; }
.dp-option.active { background: #e4f4ea; }
.dp-name { font-weight: 600; }
.dp-meta { font-size: 0.82rem; color: #555; }
.dp-empty { padding: 0.6rem 0.7rem; color: #666; font-size: 0.9rem; }
.dp-selected {
  margin-top: 0.5rem;
  padding: 0.6rem 0.9rem;
  background: #eef4f1;
  border: 1px solid #b8e0c7;
  border-radius: 6px;
  font-size: 0.9rem;
}
.dp-sel-title { font-weight: 700; color: var(--primary-dark); }
.dp-sel-code { font-size: 0.8rem; color: #666; }

.badge-expired { color: var(--danger); font-weight: 600; }
.badge-soon { color: var(--warn); font-weight: 600; }
.badge-ok { color: var(--primary-dark); }

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
@media (max-width: 720px) {
  .grid-2 { grid-template-columns: 1fr; }
}

.home-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
@media (max-width: 720px) {
  .home-links { grid-template-columns: 1fr; }
}
.home-links a {
  display: block;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
  text-align: center;
  text-decoration: none;
  color: var(--primary-dark);
  font-weight: 600;
}
.home-links a:hover { border-color: var(--primary); }