:root {
  --bg: #f7f8fa;
  --panel: #ffffff;
  --panel-soft: #fbfbfc;
  --ink: #151a23;
  --muted: #6b7280;
  --line: #e5e7eb;
  --line-strong: #d7dae0;
  --nav: #111827;
  --nav-soft: #1f2937;
  --accent: #f6821f;
  --accent-2: #faae40;
  --accent-soft: #fff2e7;
  --green: #178344;
  --green-soft: #eaf8ef;
  --red: #c0392b;
  --red-soft: #fff0ee;
  --amber: #a15c00;
  --amber-soft: #fff6df;
  --shadow: 0 8px 30px rgba(20, 28, 45, .07);
  --radius: 18px;
  --radius-sm: 12px;
}

* { box-sizing: border-box; }
html { background: var(--bg); }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  min-height: 100vh;
}
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
a { color: inherit; }

.app-shell { min-height: 100vh; display: grid; grid-template-columns: 270px minmax(0,1fr); }
.sidebar {
  position: sticky; top: 0; height: 100vh; padding: 22px 16px;
  background: var(--nav); color: #fff; display: flex; flex-direction: column; z-index: 30;
}
.brand { display: flex; align-items: center; gap: 12px; padding: 4px 8px 22px; border-bottom: 1px solid rgba(255,255,255,.08); }
.brand-mark {
  width: 44px; height: 44px; display: grid; place-items: center; border-radius: 14px;
  background: linear-gradient(135deg,var(--accent-2),var(--accent)); color: #111827; font-weight: 900; letter-spacing: -.04em;
}
.brand-name { font-size: 15px; font-weight: 800; letter-spacing: -.01em; }
.brand-sub { margin-top: 2px; font-size: 11px; color: #9ca3af; }
.nav { display: grid; gap: 7px; margin-top: 24px; }
.nav-item {
  border: 0; color: #cbd5e1; background: transparent; border-radius: 12px; display: flex; gap: 12px; align-items: center;
  padding: 12px 13px; text-align: left; transition: .16s ease;
}
.nav-item:hover { background: rgba(255,255,255,.06); color: #fff; }
.nav-item.active { background: var(--nav-soft); color: #fff; box-shadow: inset 3px 0 0 var(--accent); }
.nav-item span:first-child { width: 18px; text-align: center; }
.sidebar-footer { margin-top: auto; border-top: 1px solid rgba(255,255,255,.08); padding-top: 16px; }
.sync-mini { display: flex; gap: 9px; align-items: flex-start; padding: 8px; }
.sync-mini strong { display: block; font-size: 12px; }
.sync-mini small { display: block; color: #9ca3af; margin-top: 2px; font-size: 10px; line-height: 1.35; }

.main-wrap { min-width: 0; }
.topbar {
  height: 86px; padding: 0 28px; display: flex; align-items: center; gap: 14px; position: sticky; top: 0;
  background: rgba(247,248,250,.92); backdrop-filter: blur(18px); border-bottom: 1px solid rgba(215,218,224,.7); z-index: 20;
}
.topbar h1 { margin: 0; font-size: 21px; letter-spacing: -.03em; }
.topbar p { margin: 4px 0 0; font-size: 12px; color: var(--muted); }
.top-actions { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.sync-pill { padding: 8px 11px; border: 1px solid var(--line); border-radius: 999px; background: #fff; font-size: 12px; color: var(--muted); display: flex; align-items: center; gap: 7px; }
.status-dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: #9ca3af; box-shadow: 0 0 0 3px rgba(156,163,175,.13); flex: 0 0 auto; }
.status-dot.online { background: var(--green); box-shadow: 0 0 0 3px rgba(23,131,68,.13); }
.status-dot.pending { background: var(--accent); box-shadow: 0 0 0 3px rgba(246,130,31,.14); }
.status-dot.error { background: var(--red); box-shadow: 0 0 0 3px rgba(192,57,43,.13); }
.content { padding: 26px 28px 40px; max-width: 1540px; margin: 0 auto; }

.button { border: 1px solid transparent; border-radius: 11px; padding: 10px 14px; font-weight: 700; font-size: 12px; transition: .15s ease; }
.button:hover { transform: translateY(-1px); }
.button.primary { background: var(--accent); color: #1a1a1a; box-shadow: 0 5px 14px rgba(246,130,31,.2); }
.button.secondary { background: #fff; color: var(--ink); border-color: var(--line); }
.button.danger { background: #fff; color: var(--red); border-color: #f3c4bd; }
.button.small { padding: 7px 10px; font-size: 11px; }
.icon-button { width: 38px; height: 38px; border: 1px solid var(--line); border-radius: 11px; background: #fff; display: grid; place-items: center; color: var(--ink); }

.grid { display: grid; gap: 18px; }
.grid.kpis { grid-template-columns: repeat(4,minmax(0,1fr)); }
.grid.two { grid-template-columns: repeat(2,minmax(0,1fr)); }
.grid.three { grid-template-columns: repeat(3,minmax(0,1fr)); }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.card.pad { padding: 20px; }
.card-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 14px; padding: 19px 20px 13px; }
.card-header h2, .card-header h3 { margin: 0; font-size: 14px; letter-spacing: -.02em; }
.card-header p { margin: 5px 0 0; color: var(--muted); font-size: 11px; }
.card-body { padding: 0 20px 20px; }
.kpi { padding: 18px; position: relative; overflow: hidden; }
.kpi::after { content:""; position:absolute; width:80px; height:80px; border-radius:50%; background:var(--accent-soft); top:-34px; right:-28px; }
.kpi .label { color: var(--muted); font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; }
.kpi .value { font-size: 28px; font-weight: 850; letter-spacing: -.05em; margin-top: 8px; }
.kpi .hint { color: var(--muted); font-size: 11px; margin-top: 3px; }

.vehicle-card { padding: 18px; }
.vehicle-top { display: flex; justify-content: space-between; gap: 14px; align-items: flex-start; }
.vehicle-badge { width: 45px; height: 45px; border-radius: 14px; display: grid; place-items: center; background: var(--accent-soft); color: #9b4e0c; font-weight: 900; }
.vehicle-title { margin: 0; font-size: 16px; letter-spacing: -.03em; }
.vehicle-meta { margin-top: 4px; font-size: 11px; color: var(--muted); }
.vehicle-stat-row { display: grid; grid-template-columns: repeat(3,1fr); gap: 10px; margin-top: 18px; }
.mini-stat { background: var(--panel-soft); border: 1px solid var(--line); border-radius: 12px; padding: 11px; }
.mini-stat span { display: block; color: var(--muted); font-size: 9px; text-transform: uppercase; font-weight: 800; letter-spacing: .05em; }
.mini-stat strong { display: block; margin-top: 5px; font-size: 13px; }

.section-bar { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin: 24px 0 12px; }
.section-bar h2 { margin: 0; font-size: 15px; letter-spacing: -.02em; }
.filters { display: flex; gap: 8px; flex-wrap: wrap; }
.field-inline { border: 1px solid var(--line); background: #fff; border-radius: 10px; padding: 9px 11px; font-size: 12px; color: var(--ink); }

.table-wrap { overflow-x: auto; border-top: 1px solid var(--line); }
table { width: 100%; border-collapse: collapse; min-width: 760px; }
th { text-align: left; padding: 11px 14px; color: var(--muted); font-size: 9px; text-transform: uppercase; letter-spacing: .06em; background: #fafafa; border-bottom: 1px solid var(--line); white-space: nowrap; }
td { padding: 13px 14px; border-bottom: 1px solid #eef0f3; font-size: 12px; vertical-align: top; }
tr:last-child td { border-bottom: 0; }
.actions { display: flex; gap: 6px; white-space: nowrap; }
.link-button { border: 0; background: transparent; color: #8b4a10; font-weight: 800; padding: 2px 4px; font-size: 11px; }
.link-button.danger { color: var(--red); }

.badge { display: inline-flex; align-items: center; border-radius: 999px; padding: 4px 8px; font-size: 9px; font-weight: 850; letter-spacing: .02em; }
.badge.green { background: var(--green-soft); color: var(--green); }
.badge.red { background: var(--red-soft); color: var(--red); }
.badge.amber { background: var(--amber-soft); color: var(--amber); }
.badge.gray { background: #f1f3f5; color: #667085; }
.badge.orange { background: var(--accent-soft); color: #9b4e0c; }
.progress { height: 6px; border-radius: 999px; background: #edf0f3; overflow: hidden; margin-top: 7px; }
.progress > i { display: block; height: 100%; background: linear-gradient(90deg,var(--accent-2),var(--accent)); border-radius: inherit; }

.empty { text-align: center; padding: 38px 20px; color: var(--muted); font-size: 12px; }
.note { padding: 13px 14px; border-radius: 12px; background: #f7f7f8; border: 1px solid var(--line); color: #4b5563; font-size: 11px; line-height: 1.5; }
.note.orange { background: var(--accent-soft); border-color: #ffd7b8; color: #75400e; }
.setting-row { display: grid; grid-template-columns: minmax(0,220px) 1fr; gap: 18px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.setting-row:last-child { border-bottom: 0; }
.setting-row h3 { margin: 0; font-size: 13px; }
.setting-row p { margin: 5px 0 0; color: var(--muted); font-size: 11px; line-height: 1.45; }
.codeish { font-family: ui-monospace,SFMono-Regular,Menlo,monospace; font-size: 10px; word-break: break-all; background: #f4f5f7; border: 1px solid var(--line); padding: 10px 12px; border-radius: 10px; }

.form-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 14px; }
.form-group { display: grid; gap: 6px; }
.form-group.full { grid-column: 1 / -1; }
.form-group label { font-size: 10px; font-weight: 800; text-transform: uppercase; letter-spacing: .05em; color: #5e6673; }
.input { width: 100%; border: 1px solid var(--line-strong); background: #fff; border-radius: 10px; padding: 10px 11px; outline: none; font-size: 12px; color: var(--ink); }
.input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(246,130,31,.12); }
textarea.input { min-height: 92px; resize: vertical; }
.form-actions { grid-column: 1 / -1; display: flex; gap: 9px; justify-content: flex-end; margin-top: 8px; }

.modal-backdrop { position: fixed; inset: 0; z-index: 100; background: rgba(17,24,39,.55); backdrop-filter: blur(4px); display: grid; place-items: center; padding: 18px; }
.modal-backdrop.hidden { display: none; }
.modal { width: min(720px,100%); max-height: min(780px,92vh); overflow: auto; border-radius: 18px; background: #fff; box-shadow: 0 24px 80px rgba(0,0,0,.24); }
.modal-header { position: sticky; top: 0; z-index: 2; background: #fff; display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 16px 18px; border-bottom: 1px solid var(--line); }
.modal-header h2 { margin: 0; font-size: 15px; }
.modal-body { padding: 18px; }

.toast { position: fixed; right: 20px; bottom: 20px; z-index: 300; transform: translateY(20px); opacity: 0; pointer-events: none; transition: .2s ease; background: #111827; color: #fff; border-radius: 12px; padding: 11px 14px; font-size: 11px; box-shadow: 0 12px 30px rgba(0,0,0,.18); max-width: 360px; }
.toast.show { transform: translateY(0); opacity: 1; }
.toast.error { background: #8f2e22; }
.bottom-nav { display: none; }
.mobile-only { display: none; }

@media (max-width: 1050px) {
  .grid.kpis { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .grid.three { grid-template-columns: repeat(2,minmax(0,1fr)); }
}

@media (max-width: 780px) {
  body { padding-bottom: calc(72px + env(safe-area-inset-bottom)); }
  .app-shell { display: block; }
  .sidebar { position: fixed; inset: 0 auto 0 0; width: 272px; transform: translateX(-105%); transition: transform .2s ease; box-shadow: 12px 0 30px rgba(0,0,0,.16); }
  .sidebar.open { transform: translateX(0); }
  .mobile-only { display: grid; }
  .topbar { height: 76px; padding: 0 14px; }
  .topbar p { display: none; }
  .topbar h1 { font-size: 18px; }
  .sync-pill { display: none; }
  .top-actions .button { display: none; }
  .content { padding: 16px 12px 24px; }
  .grid.kpis, .grid.two, .grid.three { grid-template-columns: 1fr; gap: 12px; }
  .kpi { padding: 15px; }
  .kpi .value { font-size: 24px; }
  .vehicle-stat-row { grid-template-columns: 1fr 1fr; }
  .section-bar { align-items: flex-start; flex-direction: column; }
  .filters { width: 100%; }
  .field-inline { flex: 1 1 150px; min-width: 0; }
  .card-header { padding: 16px 15px 10px; }
  .card-body { padding: 0 15px 15px; }
  .setting-row { grid-template-columns: 1fr; gap: 10px; }
  .form-grid { grid-template-columns: 1fr; }
  .form-group.full { grid-column: auto; }
  .form-actions { grid-column: auto; }
  .bottom-nav {
    display: grid; grid-template-columns: repeat(5,1fr); position: fixed; left: 0; right: 0; bottom: 0; z-index: 80;
    min-height: 64px; padding: 5px 4px calc(5px + env(safe-area-inset-bottom)); background: rgba(255,255,255,.96); backdrop-filter: blur(18px); border-top: 1px solid var(--line);
  }
  .bottom-item { border: 0; background: transparent; display: grid; justify-items: center; align-content: center; gap: 2px; color: #7b8491; border-radius: 10px; }
  .bottom-item span { font-size: 17px; }
  .bottom-item small { font-size: 9px; font-weight: 700; }
  .bottom-item.active { color: #9b4e0c; background: var(--accent-soft); }
  .toast { bottom: 82px; left: 12px; right: 12px; max-width: none; }
}

@media (max-width: 480px) {
  .grid.kpis { grid-template-columns: 1fr 1fr; }
  .kpi .value { font-size: 20px; }
  .kpi .label { font-size: 9px; }
  .vehicle-stat-row { grid-template-columns: 1fr 1fr; }
}

/* 1.1 customizable skins; base layout remains unchanged */
:root[data-skin="midnight"] { --accent:#638df3; --accent-2:#8ba9ff; --accent-soft:#e9efff; --nav:#101a30; --nav-soft:#253654; }
:root[data-skin="graphite"] { --accent:#798697; --accent-2:#a1acb8; --accent-soft:#edf0f3; --nav:#202329; --nav-soft:#363c44; }
:root[data-skin="forest"] { --accent:#269a75; --accent-2:#6cc5a2; --accent-soft:#e6f7ef; --nav:#0e2822; --nav-soft:#1d4538; }
:root[data-skin="light"] { --accent:#d66c17; --accent-2:#e99c49; --accent-soft:#fff1e2; --nav:#374153; --nav-soft:#475569; --bg:#ffffff; }
.alert-strip{display:flex;flex-wrap:wrap;gap:10px;align-items:center;padding:12px 24px;background:#fff0d7;color:#65370b;border-bottom:1px solid #ffdb9f;font-size:13px}
.alert-strip span{flex:1;min-width:180px}.alert-strip button{border:1px solid currentColor;border-radius:8px;padding:7px 12px;color:inherit;background:transparent;cursor:pointer}
.update-prompt{position:fixed;z-index:10000;bottom:18px;right:18px;max-width:430px;box-shadow:0 12px 40px #0005;background:#151f2d;color:white;border:1px solid #485368;padding:18px;border-radius:14px;display:flex;gap:10px;flex-wrap:wrap;align-items:center}.update-prompt strong,.update-prompt span{width:100%}.update-prompt span{font-size:13px;color:#ccd4df}
@media(max-width:700px){.update-prompt{left:10px;right:10px;bottom:80px}.alert-strip{padding:10px 14px}}