:root {
  --bg: #f6f5f0;
  --card: #ffffff;
  --border: #e6e2d6;
  --text: #1f1a12;
  --muted: #7a7266;
  --primary: #7b3f00;      /* EGAT-ish warm brown */
  --primary-dark: #5c2f00;
  --accent: #d4a017;
  --success: #2b7a3b;
  --success-bg: #e6f2ea;
  --danger: #a02020;
  --danger-bg: #fbeaea;
  --info-bg: #eef4fb;
  --taken: #b3aa93;
  --shadow: 0 1px 2px rgba(30, 20, 10, 0.06), 0 4px 12px rgba(30, 20, 10, 0.05);
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: 'Sarabun', 'Noto Sans Thai', 'Segoe UI', Tahoma, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}
button {
  font-family: inherit;
  cursor: pointer;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: white;
  padding: 8px 14px;
  font-size: 14px;
  transition: background .15s, border-color .15s;
}
button:hover { background: #f0ebde; }
button.primary { background: var(--primary); color: white; border-color: var(--primary-dark); }
button.primary:hover { background: var(--primary-dark); }
button.danger  { background: var(--danger); color: white; border-color: var(--danger); }
button.danger:hover { background: #7c1717; }
button.subtle  { background: transparent; border-color: transparent; color: var(--primary); padding: 4px 8px; }
button:disabled { opacity: .5; cursor: not-allowed; }
input, select {
  font-family: inherit;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  background: white;
  color: var(--text);
}
input:focus, select:focus { outline: 2px solid var(--accent); outline-offset: -1px; }

/* Login */
.login-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, #f6f5f0 0%, #e8e0cf 100%);
}
.login-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
  width: 100%;
  max-width: 380px;
  box-shadow: var(--shadow);
}
.login-card h1 {
  margin: 0 0 4px;
  font-size: 20px;
  color: var(--primary);
}
.login-card .subtitle {
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 24px;
}
.login-card label {
  display: block;
  font-size: 13px;
  color: var(--muted);
  margin: 10px 0 4px;
}
.login-card input { width: 100%; }
.login-card .error {
  background: var(--danger-bg);
  color: var(--danger);
  padding: 8px 12px;
  border-radius: 6px;
  margin-top: 12px;
  font-size: 13px;
}
.login-card button { width: 100%; margin-top: 16px; padding: 10px; }
.hint {
  margin-top: 20px;
  font-size: 12px;
  color: var(--muted);
  border-top: 1px dashed var(--border);
  padding-top: 12px;
  line-height: 1.6;
}
.hint code { background: #efeadb; padding: 1px 5px; border-radius: 3px; }

/* Layout */
.app {
  max-width: 1400px;
  margin: 0 auto;
  padding: 20px 24px 60px;
}
.topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 20px;
}
.topbar h1 {
  margin: 0;
  font-size: 20px;
  color: var(--primary);
  flex-grow: 1;
}
.topbar .subtitle { color: var(--muted); font-size: 13px; }
.badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 999px;
  background: var(--accent);
  color: #3a2b00;
  font-size: 12px;
  font-weight: 600;
}
.badge.selector { background: #cde5d3; color: #235a34; }
.tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 20px;
}
.tabs button {
  border: none;
  border-bottom: 2px solid transparent;
  background: transparent;
  padding: 10px 16px;
  border-radius: 0;
  font-size: 14px;
  color: var(--muted);
}
.tabs button:hover { background: #efeadb; color: var(--text); }
.tabs button.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
  font-weight: 600;
}

/* Summary cards */
.summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}
.stat {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px 16px;
  box-shadow: var(--shadow);
}
.stat .label { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .5px; }
.stat .value { font-size: 24px; font-weight: 700; color: var(--primary); margin-top: 4px; }
.stat .value small { font-size: 14px; font-weight: 400; color: var(--muted); }
.stat .bar { margin-top: 8px; height: 6px; background: var(--border); border-radius: 3px; overflow: hidden; }
.stat .bar > div { height: 100%; background: var(--success); transition: width .3s; }

/* Filter bar */
.filters {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 12px;
  padding: 12px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.filters input[type=search] { flex-grow: 1; min-width: 200px; }
.filters label { font-size: 13px; color: var(--muted); display: flex; align-items: center; gap: 6px; }
.chip {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  background: #efeadb;
  color: var(--muted);
}
.chip.selected { background: var(--primary); color: white; }

/* Shop grid */
.shop-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 12px;
}
.shop-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  box-shadow: var(--shadow);
  position: relative;
}
.shop-card.taken {
  opacity: .65;
  background: #f0ede4;
}
.shop-card.mine {
  border-color: var(--success);
  background: var(--success-bg);
}
.shop-card .row1 { display: flex; align-items: baseline; gap: 8px; }
.shop-card .name { font-weight: 700; font-size: 15px; flex-grow: 1; }
.shop-card .id { color: var(--muted); font-size: 12px; }
.shop-card .cat {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--info-bg);
  color: #14446e;
  font-size: 11px;
  font-weight: 600;
}
.shop-card .owner { color: var(--muted); font-size: 13px; }
.shop-card .items { font-size: 13px; margin: 4px 0; line-height: 1.4; }
.shop-card .meta { display: flex; flex-wrap: wrap; gap: 6px; font-size: 11px; color: var(--muted); }
.shop-card .meta span { background: #efeadb; padding: 2px 6px; border-radius: 3px; }
.shop-card .actions { display: flex; gap: 6px; margin-top: 8px; align-items: center; }
.shop-card .actions .status {
  flex-grow: 1;
  font-size: 12px;
  color: var(--success);
  font-weight: 600;
}
.shop-card .taken-by {
  font-size: 12px;
  color: var(--muted);
  font-style: italic;
  flex-grow: 1;
}

/* Admin panels */
.panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
}
.panel h2 { margin: 0 0 12px; font-size: 16px; color: var(--primary); }
.panel .description { color: var(--muted); font-size: 13px; margin-bottom: 12px; }
table { width: 100%; border-collapse: collapse; }
table th, table td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}
table th { background: #f0ebde; color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; }
.grid-form {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  align-items: end;
}
.grid-form label { font-size: 13px; color: var(--muted); display: block; margin-bottom: 4px; }
.grid-form input, .grid-form select { width: 100%; }
.flash {
  padding: 10px 14px;
  border-radius: 6px;
  margin-bottom: 12px;
  font-size: 13px;
}
.flash.error { background: var(--danger-bg); color: var(--danger); }
.flash.ok { background: var(--success-bg); color: var(--success); }

/* Results view */
.results-section h3 { margin: 20px 0 8px; color: var(--primary); }
.results-section .selector-name { color: var(--muted); font-weight: 400; font-size: 13px; margin-left: 8px; }

/* Modal */
.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(20, 15, 8, 0.55);
  display: grid; place-items: center;
  z-index: 999;
  animation: fadeIn .12s ease-out;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.modal {
  background: var(--card);
  border-radius: 10px;
  border: 1px solid var(--border);
  box-shadow: 0 20px 60px rgba(0,0,0,.2);
  width: 100%;
  max-width: 520px;
  padding: 24px;
  margin: 20px;
}
.modal h3 {
  margin: 0 0 12px;
  color: var(--danger);
  font-size: 17px;
  display: flex; align-items: center; gap: 8px;
}
.modal .body { font-size: 14px; line-height: 1.6; }
.modal .conflicts {
  background: #fdf7ea;
  border: 1px solid #eddba5;
  border-radius: 6px;
  padding: 10px 14px;
  margin: 12px 0;
  max-height: 240px;
  overflow-y: auto;
}
.modal .conflicts .conflict-row { padding: 6px 0; border-bottom: 1px dashed #e0c98a; }
.modal .conflicts .conflict-row:last-child { border-bottom: none; }
.modal .conflicts .shop-name { font-weight: 600; color: var(--primary-dark); }
.modal .conflicts .items { color: var(--muted); font-size: 13px; }
.modal .conflicts .items strong { color: var(--danger); background: #fbeaea; padding: 0 4px; border-radius: 3px; }
.modal .actions {
  display: flex; gap: 8px; justify-content: flex-end;
  margin-top: 20px;
}
.modal .actions button { padding: 10px 20px; min-width: 90px; }