/* Fence_alarm PWA — modern design system.
   Same CSS-variable names + component class names as before (so all inline
   page styles and wired JS keep working), retuned to the "Fence Alarm redrawn"
   concept: Inter type, agricultural green, soft cards, colour+word status. */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
  --bg: #f3f6f0;
  --card: #ffffff;
  --surface-2: #fafcf8;
  --ink: #14201a;
  --ink-2: #3b463f;
  --muted: #6c766d;
  --line: #e6eae1;
  --line-2: #d7ddce;

  --primary: #1c7c45;
  --primary-hover: #166537;
  --primary-soft: #e6f1ea;
  --accent: #27b06d;
  --danger: #d23b3b;

  --ok: #168a4d;      --ok-bg: #e2f3ea;
  --warn: #b9780a;    --warn-bg: #fbefd6;
  --err: #d23b3b;     --err-bg: #fbe3e3;
  --info: #4c6a5b;    --info-bg: #e7efe9;
  --offline: #79837b; --offline-bg: #ebeee8;

  --radius: 18px;
  --r-sm: 12px;
  --shadow: 0 1px 2px rgba(16,32,24,.05);
  --shadow-lg: 0 10px 30px rgba(16,44,28,.10);
  --font: 'Inter', system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font);
  font-size: 15px; line-height: 1.55;
  background:
    radial-gradient(1100px 460px at 50% -160px, #e9f2e6, transparent),
    var(--bg);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* --- Top nav ------------------------------------------------------------- */
.nav {
  background: color-mix(in srgb, var(--card) 82%, transparent);
  backdrop-filter: saturate(1.2) blur(10px);
  border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 10;
}
.nav-inner {
  max-width: 1080px; margin: 0 auto; padding: 0 1.2em;
  display: flex; align-items: center; gap: 1.2em; height: 62px;
}
.nav-brand { font-weight: 800; font-size: 1.08em; letter-spacing: -.01em; color: var(--ink); }
.nav-brand span { color: var(--primary); }
.nav-links { display: flex; gap: .3em; flex: 1; }
.nav-links a {
  color: var(--ink-2); padding: .5em .85em; border-radius: 10px;
  font-weight: 500; font-size: .95em; transition: background .12s;
}
.nav-links a:hover { background: var(--surface-2); text-decoration: none; }
.nav-links a.active { color: var(--primary); background: var(--primary-soft); font-weight: 600; }
.nav-user { color: var(--muted); font-size: .9em; display: flex; align-items: center; gap: .6em; }
.nav-user button {
  background: var(--card); border: 1px solid var(--line-2);
  padding: .45em .8em; border-radius: 10px; cursor: pointer;
  color: var(--ink-2); font: inherit; font-size: .92em; font-weight: 500;
}
.nav-user button:hover { background: var(--surface-2); }
.nav-user select {
  font: inherit; font-size: .9em; padding: .4em .5em; border-radius: 9px;
  border: 1px solid var(--line-2); background: var(--card); color: var(--ink-2);
}

/* --- Layout -------------------------------------------------------------- */
main { max-width: 1080px; margin: 0 auto; padding: 1.8em 1.2em 4em; }
.page-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 1.3em; flex-wrap: wrap; gap: .8em;
}
.page-header h1 { margin: 0; font-size: 1.7em; font-weight: 800; letter-spacing: -.02em; }
.page-header .sub { color: var(--muted); font-size: .92em; margin-top: .15em; }

/* --- Cards --------------------------------------------------------------- */
.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 1.3em 1.4em;
}
.card h2 { margin: 0 0 .9em; font-size: 1.06em; font-weight: 700; letter-spacing: -.01em; }
.card.tight { padding: .7em 1em; }

/* --- Collapsible card (details/summary) — progressive disclosure --------- */
details.card { padding: 0; }
details.card > summary {
  display: flex; align-items: center; gap: .6em;
  padding: 1.15em 1.4em; cursor: pointer; user-select: none;
  list-style: none; border-radius: var(--radius);
}
details.card > summary::-webkit-details-marker { display: none; }
details.card > summary > .sum-title {
  margin-right: auto; font-size: 1.06em; font-weight: 700; letter-spacing: -.01em;
}
details.card > summary:hover > .sum-title { color: var(--primary); }
details.card > summary > .sum-meta { font-size: .85em; color: var(--muted); font-weight: 500; }
details.card > summary::after {
  content: ""; flex: 0 0 auto; width: .55em; height: .55em; margin-left: .2em;
  border-right: 2px solid var(--muted); border-bottom: 2px solid var(--muted);
  transform: rotate(-45deg); transition: transform .18s;
}
details.card[open] > summary::after { transform: rotate(45deg); }
details.card[open] > summary { border-bottom: 1px solid var(--line); border-radius: var(--radius) var(--radius) 0 0; }
details.card > .det-body { padding: 1.2em 1.4em 1.4em; }
details.card > .det-body > :first-child { margin-top: 0; }

/* --- Buttons ------------------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5em;
  padding: .62em 1.15em; font: inherit; font-size: .95em; font-weight: 600;
  border: 1.5px solid transparent; border-radius: var(--r-sm);
  background: var(--primary); color: #fff; cursor: pointer; text-decoration: none;
  transition: background .12s, transform .04s;
}
.btn:hover { background: var(--primary-hover); text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn.ghost { background: var(--card); color: var(--ink); border-color: var(--line-2); }
.btn.ghost:hover { background: var(--surface-2); }
.btn.soft { background: var(--primary-soft); color: var(--primary); }
.btn.soft:hover { background: #d8ebe0; }
.btn.danger { background: var(--danger); }
.btn.danger:hover { background: #b32f2f; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

/* --- Form fields --------------------------------------------------------- */
label.field {
  display: block; margin: .9em 0;
  font-size: .9em; color: var(--ink-2); font-weight: 600;
}
label.field input, label.field select, label.field textarea {
  display: block; width: 100%; margin-top: .4em;
  padding: .7em .8em; font-size: 1em; font-family: inherit;
  border: 1.5px solid var(--line-2); border-radius: var(--r-sm);
  background: var(--surface-2); color: var(--ink);
}
label.field input:focus, label.field select:focus, label.field textarea:focus {
  outline: none; border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-soft); background: var(--card);
}

/* --- Pills (status: colour + dot + word) --------------------------------- */
.pill {
  display: inline-flex; align-items: center; gap: .45em;
  padding: .28em .7em; border-radius: 999px;
  font-size: .8em; font-weight: 700; text-transform: capitalize;
  background: var(--offline-bg); color: var(--offline);
}
.pill::before { content: ""; width: .5em; height: .5em; border-radius: 50%; background: currentColor; }
.pill.ok { background: var(--ok-bg); color: var(--ok); }
.pill.low, .pill.warn { background: var(--warn-bg); color: var(--warn); }
.pill.no_pulse, .pill.fault { background: var(--err-bg); color: var(--err); }
.pill.boot { background: var(--info-bg); color: var(--info); }
.pill.offline { background: var(--offline-bg); color: var(--offline); }

/* --- Device cards grid --------------------------------------------------- */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); gap: 1.1em; }
.dev-card { transition: box-shadow .15s, transform .12s; cursor: pointer; }
.dev-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); }
.dev-card .dev-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: .7em; }
.dev-card .dev-name { font-weight: 700; font-size: 1.1em; letter-spacing: -.01em; }
.dev-card .dev-id { color: var(--muted); font-size: .78em; font-family: ui-monospace, monospace; }
.dev-card .row { display: flex; justify-content: space-between; padding: .4em 0; font-size: .95em; border-top: 1px solid var(--line); }
.dev-card .row:first-of-type { border-top: 0; }
.dev-card .row .k { color: var(--muted); }
.dev-card .row .v { font-weight: 600; font-variant-numeric: tabular-nums; }
.dev-card .seen { color: var(--muted); font-size: .82em; margin-top: .7em; }
.dev-card .big-kv { font-size: 2.3em; font-weight: 800; letter-spacing: -.02em; line-height: 1; font-variant-numeric: tabular-nums; }

/* toggle switch (checkbox-backed, so existing .checked JS still works) */
.switch { display: inline-flex; align-items: center; gap: .65em; cursor: pointer; user-select: none; }
.switch input { position: absolute; opacity: 0; width: 0; height: 0; }
.switch .track { width: 50px; height: 30px; flex: 0 0 auto; border-radius: 999px; background: var(--line-2); position: relative; transition: background .18s; }
.switch .track::after { content: ""; position: absolute; top: 3px; left: 3px; width: 24px; height: 24px; border-radius: 50%; background: #fff; box-shadow: var(--shadow); transition: left .18s; }
.switch input:checked + .track { background: var(--primary); }
.switch input:checked + .track::after { left: 23px; }
.switch input:focus-visible + .track { box-shadow: 0 0 0 3px var(--primary-soft); }
.switch .switch-text { font-weight: 600; font-size: .92em; color: var(--ink-2); }

/* battery / level bar */
.batt { flex: 1; height: 8px; border-radius: 999px; background: var(--line); overflow: hidden; }
.batt > i { display: block; height: 100%; border-radius: 999px; background: var(--ok); }
.batt.warn > i { background: var(--warn); }

.empty { text-align: center; color: var(--muted); padding: 3.5em 1em; }

/* --- Tables (alarms) ----------------------------------------------------- */
table.simple { width: 100%; border-collapse: collapse; }
table.simple th, table.simple td { padding: .7em .6em; text-align: left; border-bottom: 1px solid var(--line); font-size: .95em; }
table.simple th { font-weight: 700; color: var(--muted); font-size: .76em; text-transform: uppercase; letter-spacing: .05em; }
table.simple tr:last-child td { border-bottom: 0; }
table.simple tr.acked td { color: var(--muted); }
table.simple tr.escalated td:first-child::before { content: "⚠ "; color: var(--err); }

/* --- Banner -------------------------------------------------------------- */
.banner {
  background: var(--info-bg); color: var(--info);
  border: 1px solid color-mix(in srgb, var(--info) 25%, transparent);
  border-radius: var(--radius); padding: .9em 1.1em;
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 1.3em; gap: 1em; flex-wrap: wrap; font-weight: 500;
}
.banner .actions { display: flex; gap: .6em; }
.banner.success { background: var(--ok-bg); color: var(--ok); border-color: color-mix(in srgb, var(--ok) 30%, transparent); }
.banner.warn { background: var(--warn-bg); color: var(--warn); border-color: color-mix(in srgb, var(--warn) 30%, transparent); }

/* --- Modal --------------------------------------------------------------- */
.modal-backdrop {
  position: fixed; inset: 0; z-index: 200; background: rgba(16, 28, 20, .42);
  backdrop-filter: blur(2px);
  display: flex; align-items: flex-start; justify-content: center;
  padding: 2.2em 1em; overflow-y: auto; opacity: 0; pointer-events: none; transition: opacity .15s;
}
.modal-backdrop.show { opacity: 1; pointer-events: auto; }
.modal {
  background: var(--card); border-radius: 22px; box-shadow: 0 24px 60px rgba(13,30,20,.30);
  width: 100%; max-width: 520px; margin: auto 0; transform: translateY(-10px) scale(.99); transition: transform .15s;
}
.modal-backdrop.show .modal { transform: none; }
.modal-head { display: flex; align-items: center; justify-content: space-between; padding: 1.2em 1.5em; border-bottom: 1px solid var(--line); }
.modal-head h2 { margin: 0; font-size: 1.15em; font-weight: 700; }
.modal-close { background: var(--surface-2); border: 1px solid var(--line); width: 34px; height: 34px; border-radius: 10px; cursor: pointer; font-size: 1.2em; line-height: 1; color: var(--muted); }
.modal-close:hover { color: var(--ink); background: var(--line); }
.modal-body { padding: 1.3em 1.5em; }
.modal-foot { display: flex; justify-content: flex-end; gap: .7em; align-items: center; padding: 1.1em 1.5em; border-top: 1px solid var(--line); }

/* --- Toast --------------------------------------------------------------- */
#toast {
  position: fixed; bottom: 1.6em; left: 50%; transform: translateX(-50%);
  background: var(--ink); color: #fff; padding: .8em 1.3em; border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0,0,0,.25); opacity: 0; pointer-events: none;
  transition: opacity .2s, transform .2s; z-index: 100; max-width: 90%; font-weight: 500;
}
#toast.show { opacity: 1; transform: translateX(-50%) translateY(-4px); }

/* --- Login page (no nav) ------------------------------------------------- */
.login-shell { max-width: 420px; margin: 7vh auto 4em; padding: 0 1.1em; }
.login-shell .card { padding: 1.9em; box-shadow: var(--shadow-lg); border-radius: 22px; }
.login-shell h1 { margin: 0 0 .15em; font-size: 1.7em; font-weight: 800; letter-spacing: -.02em; }
.login-shell .help { color: var(--muted); margin-bottom: 1.3em; }

/* --- Misc ---------------------------------------------------------------- */
.muted { color: var(--muted); font-size: .92em; }
.row-actions { display: flex; gap: .55em; align-items: center; }
.spacer { flex: 1; }
.code-box {
  font-family: ui-monospace, monospace; font-size: .85em;
  background: var(--surface-2); border: 1px solid var(--line);
  padding: .9em; border-radius: var(--r-sm); white-space: pre-wrap; word-break: break-all;
}

/* Bottom tab bar — hidden on desktop, shown on mobile (rendered by common.js) */
.tabbar { display: none; }

/* Responsive / mobile-first */
@media (max-width: 720px) {
  .nav-inner { padding: 0 .9em; gap: .6em; height: 56px; }
  .nav-links { display: none; }                 /* main nav moves to the bottom tab bar */
  .nav-user .email-text { display: none; }
  .nav-brand { flex: 1; }

  .tabbar {
    display: flex; position: fixed; left: 0; right: 0; bottom: 0; z-index: 30;
    background: color-mix(in srgb, var(--card) 92%, transparent);
    backdrop-filter: saturate(1.3) blur(12px);
    border-top: 1px solid var(--line);
    padding: 7px 6px calc(7px + env(safe-area-inset-bottom, 0px));
  }
  .tabbar a {
    flex: 1; display: flex; flex-direction: column; align-items: center; gap: 2px;
    color: var(--muted); font-size: 11px; font-weight: 600; text-decoration: none; padding: 4px 0;
  }
  .tabbar a:hover { text-decoration: none; }
  .tabbar a.active { color: var(--primary); }
  .tabbar svg { width: 23px; height: 23px; }

  main { padding: 1.1em .9em calc(88px + env(safe-area-inset-bottom, 0px)); }
  .page-header { margin-bottom: 1em; gap: .6em; }
  .page-header h1 { font-size: 1.5em; }
  .row-actions { flex-wrap: wrap; }
  .row-actions .btn { padding: .55em .85em; font-size: .9em; }

  .grid { grid-template-columns: 1fr; }
  .chart { min-height: 200px; }

  /* Modals become bottom sheets on phones */
  .modal-backdrop { padding: 0; align-items: flex-end; }
  .modal { max-width: 100%; max-height: 92vh; border-radius: 22px 22px 0 0;
           display: flex; flex-direction: column; transform: translateY(18px); }
  .modal-backdrop.show .modal { transform: none; }
  .modal-body { overflow-y: auto; }
}