/* ================================================================
   MonitorIoT PWA - Stylesheet
   Dark-first, mobile-first, tanpa framework.
   ================================================================ */

:root {
  --bg: #0f172a;
  --bg-elev: #1e293b;
  --bg-elev-2: #273549;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --accent: #38bdf8;
  --accent-strong: #0ea5e9;
  --danger: #f87171;
  --danger-bg: #451a1a;
  --warning: #fbbf24;
  --warning-bg: #453411;
  --ok: #4ade80;
  --border: #334155;
  --radius: 12px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ---------- Header ---------- */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 20px;
  background: var(--bg-elev);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
  padding-top: max(14px, env(safe-area-inset-top));
}

.brand { display: flex; align-items: center; gap: 12px; }
.brand-icon { border-radius: 10px; }
.brand h1 { font-size: 1.15rem; margin: 0; letter-spacing: 0.3px; }
.brand-sub { margin: 0; font-size: 0.75rem; color: var(--text-muted); }

.conn { display: flex; align-items: center; gap: 8px; font-size: 0.8rem; color: var(--text-muted); }
.conn-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--text-muted); }
.conn-dot--online { background: var(--ok); box-shadow: 0 0 6px var(--ok); }
.conn-dot--offline { background: var(--danger); }

/* ---------- Banner ---------- */
.banner {
  display: none;
  padding: 10px 20px;
  font-size: 0.85rem;
  background: var(--bg-elev-2);
  border-bottom: 1px solid var(--border);
}
.banner--visible { display: block; }
.banner--error { background: var(--danger-bg); color: var(--danger); }

/* ---------- Layout ---------- */
main {
  max-width: 960px;
  margin: 0 auto;
  padding: 20px 16px 60px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 12px;
}
.section-head h2 { font-size: 1.05rem; margin: 0; }
.muted { color: var(--text-muted); font-size: 0.78rem; }

/* ---------- Sensor grid ---------- */
.sensor-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 14px;
}

.sensor-card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
}
.sensor-card h3 { margin: 0 0 6px; font-size: 0.85rem; font-weight: 600; color: var(--text-muted); }
.sensor-value { margin: 0; font-size: 1.7rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.sensor-status { margin: 6px 0 0; font-size: 0.78rem; color: var(--ok); }
.sensor-card--alarm { border-color: var(--danger); }
.sensor-card--alarm .sensor-status { color: var(--danger); font-weight: 700; }

.empty-state { color: var(--text-muted); font-size: 0.9rem; grid-column: 1 / -1; }

/* ---------- Alarm list ---------- */
.alarm-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.alarm-item {
  padding: 12px 16px;
  border-radius: var(--radius);
  background: var(--bg-elev);
  border-left: 4px solid var(--text-muted);
  font-size: 0.9rem;
}
.alarm-item--none { color: var(--text-muted); }
.alarm-item--critical { border-left-color: var(--danger); background: var(--danger-bg); }
.alarm-item--warning { border-left-color: var(--warning); background: var(--warning-bg); }
.alarm-item--info { border-left-color: var(--accent); }
.alarm-item strong { display: block; }

/* ---------- Push card ---------- */
.push-card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
}
.push-desc { margin: 0 0 16px; font-size: 0.9rem; color: var(--text-muted); }
.push-actions { display: flex; flex-wrap: wrap; gap: 10px; }

.btn {
  appearance: none;
  border: none;
  border-radius: 10px;
  padding: 11px 18px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: filter 0.15s ease, opacity 0.15s ease;
}
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn-primary { background: var(--accent-strong); color: #06283a; }
.btn-primary:not(:disabled):hover { filter: brightness(1.1); }
.btn-secondary { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn-secondary:not(:disabled):hover { background: var(--bg-elev-2); }

.push-status { margin: 14px 0 0; font-size: 0.85rem; color: var(--ok); min-height: 1.2em; }
.push-status--error { color: var(--danger); }
.push-hint { margin: 8px 0 0; font-size: 0.75rem; }

/* ---------- Footer ---------- */
.app-footer {
  border-top: 1px solid var(--border);
  padding: 16px 20px calc(16px + env(safe-area-inset-bottom));
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ---------- Responsive ---------- */
@media (max-width: 480px) {
  .sensor-grid { grid-template-columns: repeat(2, 1fr); }
  .push-actions .btn { flex: 1 1 100%; }
}

/* ---------- Aksesibilitas ---------- */
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f1f5f9;
    --bg-elev: #ffffff;
    --bg-elev-2: #e2e8f0;
    --text: #0f172a;
    --text-muted: #475569;
    --border: #cbd5e1;
    --danger-bg: #fee2e2;
    --warning-bg: #fef3c7;
  }
  .btn-primary { color: #ffffff; }
}

/* ---------- [P0-1/p.493] Form provisioning runtime ---------- */
#setup-form { display: flex; flex-direction: column; gap: 0.35rem; margin: 0.75rem 0; }
#setup-form label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-top: 0.6rem;
}
#setup-form input {
  width: 100%;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-elev-2);
  color: var(--text);
  font: inherit;
  font-size: 0.9rem;
}
#setup-form input:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
#setup-form .push-actions { margin-top: 1rem; }
#setup-form code { font-size: 0.85em; }