/* iotdev — black / gray / school bus yellow theme */

:root {
  --bg: #0a0a0a;
  --surface: #1a1a1a;
  --surface-2: #222;
  --surface-hover: #2a2a2a;
  --border: #333;
  --muted: #888;
  --text: #f5f5f5;
  --accent: #FFD800;
  --accent-hover: #FFE54D;
  --accent-dim: #b39700;
  --error: #ff5252;
  --success: #4caf50;
  --warn: #FFD800;
  --danger: #ff5252;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.5;
}

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

h1, h2, h3 { color: var(--accent); margin: 0 0 0.5em 0; }
h1 { font-size: 1.8rem; }
h2 { font-size: 1.4rem; }
h3 { font-size: 1.1rem; }

.muted { color: var(--muted); }
.error { color: var(--error); }
.success { color: var(--success); }

/* ── Layout ──────────────────────────────────────────────────────────── */
header.topbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0.6rem 1.2rem;
  display: flex;
  align-items: center;
  gap: 1.2rem;
  flex-wrap: wrap;
}
header.topbar .brand {
  color: var(--accent);
  font-weight: 700;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
header.topbar .brand img { width: 22px; height: 22px; }
header.topbar nav { display: flex; gap: 1rem; flex: 1; }
header.topbar nav a {
  color: var(--text);
  padding: 0.3rem 0.6rem;
  border-radius: 4px;
}
header.topbar nav a:hover { background: var(--surface-hover); text-decoration: none; }
header.topbar nav a.active { color: var(--accent); }
header.topbar .user { color: var(--muted); font-size: 0.9rem; }

main.container {
  max-width: 1200px;
  margin: 1.5rem auto;
  padding: 0 1.2rem;
}

/* ── Cards / panels ──────────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem 1.2rem;
  margin-bottom: 1rem;
}

.grid { display: grid; gap: 1rem; }
.grid.cols-2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid.cols-3 { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.grid.cols-4 { grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); }

.stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem;
  text-align: center;
}
.stat .num { font-size: 2rem; color: var(--accent); font-weight: 700; }
.stat .label { color: var(--muted); font-size: 0.85rem; text-transform: uppercase; }

/* ── Tables (per TableDesign.md: zebra, hover, sortable) ─────────────── */
table.data {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}
table.data th {
  background: var(--surface-2);
  color: var(--accent);
  text-align: left;
  padding: 0.6rem 0.8rem;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  user-select: none;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
table.data th.no-sort { cursor: default; }
table.data th .sort-arrow { color: var(--muted); margin-left: 0.3em; font-size: 0.8em; }
table.data th.sorted .sort-arrow { color: var(--accent); }
table.data td {
  padding: 0.6rem 0.8rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
table.data tbody tr:nth-child(even) { background: var(--surface-2); }
table.data tbody tr:hover { background: var(--surface-hover); }
table.data tbody tr.deleted td { color: var(--muted); text-decoration: line-through; }
table.data .inv-id {
  font-family: ui-monospace, "Cascadia Mono", "Source Code Pro", Menlo, monospace;
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.05em;
}

/* ── Forms ───────────────────────────────────────────────────────────── */
label { display: block; color: var(--muted); font-size: 0.85rem; margin-top: 0.7rem; margin-bottom: 0.2rem; }
input[type=text], input[type=password], input[type=date], input[type=email], input[type=search],
textarea, select {
  width: 100%;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.5rem 0.6rem;
  font-size: 1rem;
  font-family: inherit;
}
input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--accent);
}
textarea { min-height: 70px; resize: vertical; }
input[type=checkbox] { accent-color: var(--accent); }

.row { display: flex; gap: 1rem; flex-wrap: wrap; }
.row > div { flex: 1; min-width: 200px; }

button, .btn {
  display: inline-block;
  background: var(--accent);
  color: #000;
  border: none;
  padding: 0.5rem 1rem;
  font-weight: 700;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.95rem;
  font-family: inherit;
  text-decoration: none;
}
button:hover, .btn:hover { background: var(--accent-hover); color: #000; text-decoration: none; }
button.secondary, .btn.secondary {
  background: var(--surface-hover);
  color: var(--text);
  border: 1px solid var(--border);
}
button.secondary:hover, .btn.secondary:hover { background: var(--border); color: var(--accent); }
button.danger, .btn.danger { background: var(--danger); color: #fff; }
button.danger:hover, .btn.danger:hover { background: #ff7777; color: #fff; }

button.add-new {
  background: transparent;
  color: var(--accent);
  border: 1px dashed var(--accent);
  font-weight: 400;
  font-size: 0.85rem;
  padding: 0.3rem 0.6rem;
}
button.add-new:hover { background: var(--surface-hover); color: var(--accent-hover); }

.field-row { display: flex; gap: 0.4rem; align-items: stretch; }
.field-row select, .field-row input { flex: 1; }

.checkbox-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.3rem 1rem;
  margin-top: 0.4rem;
}
.checkbox-grid label {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--text);
  font-size: 0.9rem;
  margin: 0;
  padding: 0.2rem 0;
  cursor: pointer;
}

/* ── Inventory ID display (large) ────────────────────────────────────── */
.inv-id-big {
  font-family: ui-monospace, "Cascadia Mono", "Source Code Pro", Menlo, monospace;
  color: var(--accent);
  font-size: 2.5rem;
  letter-spacing: 0.15em;
  font-weight: 700;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.4rem 1rem;
  display: inline-block;
}

/* ── Photos ──────────────────────────────────────────────────────────── */
.photo-gallery { display: flex; gap: 0.6rem; flex-wrap: wrap; margin-top: 0.5rem; }
.photo-gallery .photo {
  position: relative;
  width: 140px;
  height: 140px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
}
.photo-gallery img { width: 100%; height: 100%; object-fit: cover; display: block; }
.photo-gallery .photo .delete {
  position: absolute; top: 4px; right: 4px;
  background: rgba(255,82,82,0.85); color: #fff;
  border: none; border-radius: 3px; padding: 2px 6px;
  font-size: 0.75rem; cursor: pointer;
}

/* ── Battery / status badges ─────────────────────────────────────────── */
.badge {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 10px;
  font-size: 0.78rem;
  font-weight: 600;
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
}
.badge.battery-due { background: var(--danger); color: #fff; border-color: var(--danger); }
.badge.battery-soon { background: var(--accent); color: #000; border-color: var(--accent); }
.badge.battery-ok { background: var(--success); color: #fff; border-color: var(--success); }
.badge.status-active { background: var(--success); color: #fff; }
.badge.status-decommissioned, .badge.status-broken, .badge.status-sold { background: var(--surface-2); color: var(--muted); }
.badge.status-loaned, .badge.status-in-storage { background: var(--surface-hover); color: var(--text); }

/* ── Tabs ────────────────────────────────────────────────────────────── */
.tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1rem;
  flex-wrap: wrap;
}
.tabs a {
  padding: 0.5rem 1rem;
  color: var(--muted);
  border-bottom: 2px solid transparent;
  font-size: 0.95rem;
}
.tabs a.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
  font-weight: 600;
}
.tabs a:hover { color: var(--accent); text-decoration: none; }

/* ── Modal ───────────────────────────────────────────────────────────── */
.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.7);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}
.modal-backdrop.show { display: flex; }
.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.5rem;
  max-width: 500px;
  width: 90%;
}
.modal h2 { margin-top: 0; }
.modal .actions { display: flex; gap: 0.6rem; justify-content: flex-end; margin-top: 1rem; }

/* ── Login ───────────────────────────────────────────────────────────── */
.login-container {
  max-width: 380px;
  margin: 8vh auto 0 auto;
  padding: 2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.login-container h1 { text-align: center; }
.login-container button { width: 100%; margin-top: 1rem; }

/* ── Audit log diff display ──────────────────────────────────────────── */
.diff {
  font-family: ui-monospace, monospace;
  font-size: 0.85rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.6rem;
  white-space: pre-wrap;
  word-break: break-word;
}
.diff .old { color: var(--error); }
.diff .new { color: var(--success); }
.diff .key { color: var(--accent); }

/* ── Filter bar ──────────────────────────────────────────────────────── */
.filters {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
  align-items: end;
}
.filters > div { display: flex; flex-direction: column; min-width: 150px; }
.filters label { margin-top: 0; }

/* ── Utility ─────────────────────────────────────────────────────────── */
.spacer { flex: 1; }
.right { text-align: right; }
.toolbar { display: flex; gap: 0.6rem; align-items: center; margin-bottom: 1rem; flex-wrap: wrap; }
.toolbar .spacer { flex: 1; }
hr { border: none; border-top: 1px solid var(--border); margin: 1rem 0; }