:root {
  --blue: #0d9488;
  --blue-dark: #0b7d72;
  --green: #1ba672;
  --amber: #d98c1d;
  --red: #d64545;
  --gray-bg: #f4f6f9;
  --card-bg: #ffffff;
  --border: #e3e7ee;
  --text: #1f2937;
  --text-muted: #6b7280;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", "Sarabun", Tahoma, sans-serif;
  background: var(--gray-bg);
  color: var(--text);
}

a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

.layout { display: flex; min-height: 100vh; }

.sidebar {
  width: 220px;
  background: #0f2a27;
  color: #fff;
  padding: 20px 0;
  flex-shrink: 0;
}
.sidebar .brand { padding: 0 20px 20px; font-weight: 700; font-size: 1.1rem; }
.sidebar nav a {
  display: block;
  padding: 10px 20px;
  color: #cfe3df;
}
.sidebar nav a.active, .sidebar nav a:hover {
  background: rgba(255,255,255,0.08);
  color: #fff;
  text-decoration: none;
}

.main { flex: 1; padding: 24px 32px; max-width: 1200px; }

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}
.topbar h1 { font-size: 1.4rem; margin: 0; }

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px 20px;
  margin-bottom: 20px;
}
.card h2 { margin-top: 0; font-size: 1.05rem; }

.grid { display: grid; gap: 16px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 800px) { .grid-3, .grid-2, .grid-4 { grid-template-columns: 1fr; } }

.stat-tile { border-radius: 10px; padding: 16px; color: #fff; }
.stat-tile .num { font-size: 1.8rem; font-weight: 700; }
.stat-tile.green { background: var(--green); }
.stat-tile.amber { background: var(--amber); }
.stat-tile.red { background: var(--red); }
.stat-tile.blue { background: var(--blue); }

table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
th, td { padding: 8px 10px; border-bottom: 1px solid var(--border); text-align: left; }
th { color: var(--text-muted); font-weight: 600; }

.btn {
  display: inline-block;
  padding: 8px 14px;
  border-radius: 6px;
  border: none;
  background: var(--blue);
  color: #fff;
  cursor: pointer;
  font-size: 0.9rem;
}
.btn:hover { background: var(--blue-dark); text-decoration: none; color: #fff; }
.btn-sm { padding: 4px 10px; font-size: 0.82rem; }
.btn-red { background: var(--red); }
.btn-gray { background: #9aa5b1; }
.btn-outline { background: transparent; border: 1px solid var(--blue); color: var(--blue); }

.badge { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 0.78rem; color: #fff; }
.badge-green { background: var(--green); }
.badge-amber { background: var(--amber); }
.badge-red { background: var(--red); }
.badge-blue { background: var(--blue); }
.badge-gray { background: #9aa5b1; }

.form-group { margin-bottom: 14px; }
.form-group label { display: block; margin-bottom: 4px; font-size: 0.9rem; color: var(--text-muted); }
.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  padding: 9px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.95rem;
  font-family: inherit;
}
.form-group input[type="file"] { padding: 6px; background: #fafbfc; }

.password-wrap { position: relative; }
.password-wrap input {
  width: 100%;
  padding: 9px 40px 9px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.95rem;
  font-family: inherit;
}
.password-toggle {
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.05rem;
  padding: 6px 8px;
  line-height: 1;
}

.flash { padding: 10px 14px; border-radius: 8px; margin-bottom: 16px; font-size: 0.9rem; }
.flash-success { background: #e2f6ec; color: #146c43; }
.flash-error { background: #fce8e8; color: #b02a2a; }

.auth-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #0d9488, #0f2a27);
}
.auth-card {
  background: #fff;
  border-radius: 14px;
  padding: 32px 30px;
  width: 380px;
  max-width: 92vw;
}
.auth-card h1 { font-size: 1.3rem; margin-top: 0; }
.auth-card .switch { text-align: center; margin-top: 14px; font-size: 0.88rem; }

.text-muted { color: var(--text-muted); }
.text-right { text-align: right; }
.mt-0 { margin-top: 0; }

/* การ์ดรถ + รูปภาพ */
.vehicle-card {
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  background: #fff;
}
.vehicle-card img.thumb {
  width: 100%;
  height: 150px;
  object-fit: cover;
  background: #e9edf2;
  display: block;
}
.vehicle-card .body { padding: 14px; }
.thumb-sm {
  width: 60px;
  height: 60px;
  object-fit: cover;
  border-radius: 6px;
  border: 1px solid var(--border);
  vertical-align: middle;
}
.photo-placeholder {
  width: 100%;
  height: 150px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #e9edf2;
  color: var(--text-muted);
  font-size: 2rem;
}

.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 18px; flex-wrap: wrap; }
.tabs a {
  padding: 8px 14px;
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
  font-size: 0.92rem;
}
.tabs a.active { color: var(--blue); border-bottom-color: var(--blue); font-weight: 600; }

@media print {
  .sidebar, .no-print { display: none !important; }
  .main { padding: 0; }
}