/* ─── Reset & Base ───────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --color-bg: #f4f6f9;
  --color-surface: #ffffff;
  --color-border: #d9dde6;
  --color-text: #1a1d23;
  --color-text-muted: #6b7280;
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-online: #16a34a;
  --color-offline: #9ca3af;
  --color-danger: #dc2626;
  --color-warning-bg: #fef3c7;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,.08), 0 2px 4px -1px rgba(0,0,0,.05);
}

body {
  font-family: 'Segoe UI', 'Noto Sans Thai', system-ui, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 14px;
  line-height: 1.5;
}

/* ─── Login ─────────────────────────────────────────────────────────────── */
.login-body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

.login-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  padding: 2rem 2.5rem;
  width: 100%;
  max-width: 380px;
}

.login-card h1 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: .25rem;
}

.login-card .subtitle {
  color: var(--color-text-muted);
  font-size: .875rem;
  margin-bottom: 1.5rem;
}

.login-card .error {
  background: #fee2e2;
  color: var(--color-danger);
  border-radius: 6px;
  padding: .5rem .75rem;
  margin-bottom: 1rem;
  font-size: .875rem;
}

.login-card label {
  display: block;
  font-weight: 500;
  margin-bottom: .35rem;
  margin-top: .75rem;
}

.login-card input {
  display: block;
  width: 100%;
  padding: .5rem .75rem;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: .9rem;
  outline: none;
  transition: border-color .15s;
}

.login-card input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(37,99,235,.15);
}

.login-card button {
  margin-top: 1.25rem;
  width: 100%;
  padding: .6rem;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: .95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background .15s;
}

.login-card button:hover {
  background: var(--color-primary-hover);
}

/* ─── Dashboard layout ───────────────────────────────────────────────────── */
.topbar {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .75rem 1.5rem;
  position: sticky;
  top: 0;
  z-index: 10;
  box-shadow: var(--shadow);
}

.topbar-title {
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-primary);
}

.topbar-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  color: var(--color-text-muted);
  font-size: .8rem;
}

.btn {
  padding: .4rem .9rem;
  border-radius: 6px;
  border: 1px solid var(--color-border);
  font-size: .8rem;
  font-weight: 500;
  cursor: pointer;
  background: var(--color-surface);
  color: var(--color-text);
  transition: background .12s;
}

.btn:hover { background: var(--color-bg); }

.btn-danger {
  background: var(--color-danger);
  color: #fff;
  border-color: var(--color-danger);
}

.btn-danger:hover { background: #b91c1c; }

.main-content {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.5rem 1.5rem;
}

/* ─── Stats bar ──────────────────────────────────────────────────────────── */
.stats-bar {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: .75rem 1.25rem;
  flex: 1 1 140px;
  box-shadow: var(--shadow);
}

.stat-card .stat-label {
  font-size: .75rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: .04em;
}

.stat-card .stat-value {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.2;
}

/* ─── Machine table ──────────────────────────────────────────────────────── */
.section-title {
  font-size: .9rem;
  font-weight: 700;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: .04em;
  margin-bottom: .75rem;
}

.table-wrap {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

thead th {
  text-align: left;
  padding: .65rem 1rem;
  font-size: .75rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: .04em;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
}

tbody tr {
  border-bottom: 1px solid var(--color-border);
  transition: background .1s;
}

tbody tr:last-child { border-bottom: none; }
tbody tr:hover { background: var(--color-bg); }

tbody td {
  padding: .7rem 1rem;
  vertical-align: middle;
}

/* ─── Status badge ───────────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  padding: .2rem .6rem;
  border-radius: 9999px;
  font-size: .75rem;
  font-weight: 600;
}

.badge-online  { background: #dcfce7; color: var(--color-online); }
.badge-offline { background: #f3f4f6; color: var(--color-offline); }

.dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}

.dot-online  { background: var(--color-online); }
.dot-offline { background: var(--color-offline); }

/* ─── Editable name cell ─────────────────────────────────────────────────── */
.name-cell {
  display: flex;
  align-items: center;
  gap: .5rem;
}

.name-input {
  border: 1px solid transparent;
  border-radius: 4px;
  padding: .25rem .4rem;
  font-size: .875rem;
  background: transparent;
  outline: none;
  width: 150px;
  transition: border-color .15s, background .15s;
}

.name-input:focus {
  border-color: var(--color-primary);
  background: var(--color-surface);
  box-shadow: 0 0 0 2px rgba(37,99,235,.15);
}

.save-btn {
  padding: .2rem .55rem;
  font-size: .75rem;
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
  border-radius: 4px;
  background: transparent;
  cursor: pointer;
  transition: background .12s, color .12s;
  white-space: nowrap;
}

.save-btn:hover {
  background: var(--color-primary);
  color: #fff;
}

/* ─── Thumbnail ──────────────────────────────────────────────────────────── */
.thumb-link img {
  width: 48px;
  height: 32px;
  object-fit: cover;
  border-radius: 3px;
  border: 1px solid var(--color-border);
  display: block;
}

/* ─── Toast ──────────────────────────────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  background: #1f2937;
  color: #fff;
  padding: .6rem 1rem;
  border-radius: 6px;
  font-size: .85rem;
  opacity: 0;
  transition: opacity .2s;
  pointer-events: none;
  z-index: 100;
}

.toast.show { opacity: 1; }

/* ─── Empty state ────────────────────────────────────────────────────────── */
.empty-row td {
  text-align: center;
  color: var(--color-text-muted);
  padding: 2rem;
  font-style: italic;
}

/* ─── Refresh indicator ──────────────────────────────────────────────────── */
.refresh-spin {
  display: inline-block;
  animation: spin .7s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }