:root {
  color-scheme: dark;
  --bg: #0b0d12;
  --surface: #12151c;
  --surface-2: #171b24;
  --line: #262b36;
  --ink: #e8eaf0;
  --ink-dim: #b7bcc8;
  --ink-mute: #8890a0;
  --ink-faint: #5b6070;
  --accent: #7c6cf0;
  --ok: #3ecf8e;
  --warn: #e0a63e;
  --bad: #ef5a6f;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
  overscroll-behavior-y: none;
}

.view { min-height: 100dvh; }

/* --------------------------------------------------------------- login */
#view-login {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.login-card {
  width: 100%;
  max-width: 360px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 28px 22px;
}
.brand { display: flex; align-items: center; gap: 10px; margin-bottom: 4px; }
.brand h1 { font-size: 20px; margin: 0; }
.muted { color: var(--ink-mute); font-size: 13px; }
.muted.small { font-size: 12px; }
.center { text-align: center; padding: 24px 0; }

form { display: flex; flex-direction: column; gap: 14px; margin-top: 20px; }
label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--ink-dim); }
input, select {
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  padding: 11px 12px;
  font-size: 16px; /* prevents iOS Safari auto-zoom on focus */
  width: 100%;
}
input:focus, select:focus { outline: none; border-color: var(--accent); }

.btn {
  appearance: none;
  border: 1px solid var(--line);
  background: var(--surface-2);
  color: var(--ink);
  border-radius: 8px;
  padding: 12px 16px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
}
.btn:disabled { opacity: 0.4; cursor: not-allowed; }
.btn-block { width: 100%; margin-top: 8px; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: white; }
.btn-danger { background: transparent; border-color: var(--bad); color: var(--bad); }
.btn-row { display: flex; gap: 8px; }

/* -------------------------------------------------------------- topbar */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 5;
}
.topbar-title { display: flex; align-items: center; gap: 8px; font-weight: 600; }
.icon-btn {
  appearance: none;
  background: transparent;
  border: none;
  color: var(--ink-mute);
  font-size: 18px;
  padding: 6px 10px;
  cursor: pointer;
  border-radius: 8px;
}
.icon-btn:hover { background: var(--surface-2); color: var(--ink); }

.panel-view { padding: 14px 16px 40px; max-width: 640px; margin: 0 auto; }
.panel-header { display: flex; align-items: center; gap: 8px; margin: 6px 0 14px; }
.panel-header h2 { flex: 1; font-size: 16px; margin: 0; }

/* -------------------------------------------------------- device list */
.device-list { display: flex; flex-direction: column; gap: 10px; }
.device-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 14px 16px;
  cursor: pointer;
}
.device-card:active { background: var(--surface-2); }
.device-card-name { font-weight: 600; }
.device-card-meta { color: var(--ink-faint); font-size: 12px; margin-top: 2px; }

/* ---------------------------------------------------------------- card */
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 12px;
}
.card-header { font-weight: 600; font-size: 13px; color: var(--ink-dim); margin-bottom: 10px; text-transform: uppercase; letter-spacing: 0.03em; }
.card-row { display: flex; align-items: center; justify-content: space-between; padding: 6px 0; font-size: 14px; border-bottom: 1px solid var(--line); }
.card-row:last-of-type { border-bottom: none; }
.mono { font-family: ui-monospace, "SF Mono", Menlo, monospace; }
.small { font-size: 12px; }

.badge {
  display: inline-block;
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  background: var(--surface-2);
  border: 1px solid var(--line);
  color: var(--ink-mute);
}
.badge-ok { color: var(--ok); border-color: color-mix(in srgb, var(--ok) 40%, transparent); background: color-mix(in srgb, var(--ok) 12%, transparent); }
.badge-warn { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 40%, transparent); background: color-mix(in srgb, var(--warn) 12%, transparent); }
.badge-bad { color: var(--bad); border-color: color-mix(in srgb, var(--bad) 40%, transparent); background: color-mix(in srgb, var(--bad) 12%, transparent); }

.banner { border-radius: 10px; padding: 14px 16px; margin-bottom: 12px; }
.banner p { margin: 4px 0 0; }
.banner-warn { background: color-mix(in srgb, var(--warn) 12%, var(--surface)); border: 1px solid color-mix(in srgb, var(--warn) 35%, transparent); }

/* ------------------------------------------------------------ event log */
.event-log {
  max-height: 280px;
  overflow-y: auto;
  display: flex;
  flex-direction: column-reverse;
  gap: 6px;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 12px;
}
.event-log .event { color: var(--ink-mute); border-bottom: 1px solid var(--line); padding-bottom: 6px; }
.event-log .event .ts { color: var(--ink-faint); margin-right: 6px; }
.event-log .empty { color: var(--ink-faint); text-align: center; padding: 12px 0; }

/* ------------------------------------------------------------------ toast */
.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  background: var(--surface-2);
  border: 1px solid var(--line);
  color: var(--ink);
  padding: 10px 16px;
  border-radius: 999px;
  font-size: 13px;
  z-index: 50;
  max-width: 90vw;
}
.toast.toast-err { border-color: color-mix(in srgb, var(--bad) 50%, transparent); color: var(--bad); }

@media (min-width: 640px) {
  body { font-size: 15px; }
}