/* Color palette mirrors pi-spectro's web UI so the two surfaces feel
   like one product. Dark is the default; .theme-light on <html> swaps
   the neutrals while keeping the same accent (tan / blue / green / red). */
:root {
  --bg:           #0E1F2E;
  --surface:      #13253A;
  --surface-2:    #1C3247;
  --border:       #2A3A4D;
  --text:         #E8EDF2;
  --muted:        #9FB0C2;
  --hint:         #6B7E92;
  --tan:          #C89E6A;
  --tan-2:        #F4D9A6;
  --blue:         #3A7BC8;
  --blue-2:       #8FBEEE;
  --red:          #C4423A;
  --green:        #3A9850;
  --input-bg:     #1C3247;
  --input-bg-2:   #244260;
  --header-top:   #11233A;
  --modal-shadow: rgba(0,0,0,0.6);

  /* Semantic aliases — components reference these so the palette can
     evolve without touching every component file. */
  --accent: var(--tan);
  --ok:     var(--green);
  --warn:   var(--tan);
  --bad:    var(--red);
}
html.theme-light {
  --bg:           #F3F6F9;
  --surface:      #FFFFFF;
  --surface-2:    #E8EEF4;
  --border:       #C7D2DD;
  --text:         #1A2A3C;
  --muted:        #56697C;
  --hint:         #8294A6;
  --tan:          #946A3A;
  --tan-2:        #B0824A;
  --blue:         #2A5F9F;
  --blue-2:       #4A8DCF;
  --red:          #B0322A;
  --green:        #2E7C3F;
  --input-bg:     #F8FAFC;
  --input-bg-2:   #EEF2F6;
  --header-top:   #E1EAF3;
  --modal-shadow: rgba(28,50,71,0.18);
}

* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  background: var(--bg); color: var(--text);
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  font-size: 14px; line-height: 1.45;
}
a { color: var(--tan); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Header — gradient top bar matching pi-spectro */
.topbar {
  display: flex; align-items: center; gap: 16px;
  padding: 14px 28px; border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, var(--header-top) 0%, var(--bg) 100%);
}
.brand {
  font-weight: 600; font-size: 17px; letter-spacing: 2px;
  color: var(--text); text-transform: uppercase;
}
.topbar nav { margin-left: auto; display: flex; gap: 14px; align-items: center; }
.topbar nav a { color: var(--muted); text-transform: uppercase;
                font-size: 11px; letter-spacing: 1.5px; font-weight: 600; }
.topbar nav a:hover { color: var(--text); text-decoration: none; }
.topbar nav .who { color: var(--hint); font-size: 11px; }
.topbar #themeToggle {
  background: transparent; color: var(--muted);
  border: 1px solid var(--border); border-radius: 4px;
  padding: 4px 10px; font-size: 11px; letter-spacing: 1px; cursor: pointer;
}
.topbar #themeToggle:hover { color: var(--text); border-color: var(--tan); }

main { max-width: 1200px; margin: 22px auto; padding: 0 28px; }

/* Cards — match pi-spectro's section.card */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 18px;
  margin-bottom: 16px;
}
.card.narrow { max-width: 440px; margin-left: auto; margin-right: auto; }
.card-head { display: flex; align-items: center; justify-content: space-between;
             margin-bottom: 12px; gap: 14px; flex-wrap: wrap; }
h1 { font-size: 16px; margin: 0; font-weight: 600;
     letter-spacing: 1.5px; text-transform: uppercase; color: var(--text); }
h2 { font-size: 11px; font-weight: 700; letter-spacing: 2px;
     color: var(--muted); margin: 0 0 12px 0; padding-bottom: 7px;
     border-bottom: 1px solid var(--border); text-transform: uppercase; }

label { display: block; margin-bottom: 12px; color: var(--muted); font-size: 12px; }
label input, label select {
  display: block; margin-top: 4px; width: 100%;
  background: var(--input-bg); color: var(--text);
  border: 1px solid var(--border); border-radius: 4px;
  padding: 7px 10px; font: inherit;
}
label input:focus, label select:focus {
  outline: none; border-color: var(--tan);
}
label.inline { display: inline-flex; align-items: center; gap: 8px; margin: 0;
               color: var(--muted); font-size: 12px; }
label.inline select, label.inline input {
  display: inline-block; width: auto; margin-top: 0;
}

.row { display: flex; gap: 8px; align-items: center; }

.btn {
  background: var(--surface-2); color: var(--text);
  border: 1px solid var(--border); border-radius: 4px;
  padding: 6px 14px; font: inherit; font-size: 13px; cursor: pointer;
  transition: border-color 120ms, color 120ms, background 120ms;
}
.btn:hover { border-color: var(--tan); color: var(--tan); }
.btn.primary {
  background: var(--tan); color: #0E1F2E;
  border-color: var(--tan); font-weight: 600;
}
.btn.primary:hover { background: var(--tan-2); border-color: var(--tan-2); color: #0E1F2E; }
.btn.warn { color: var(--red); border-color: var(--red); }
.btn.warn:hover { background: var(--red); color: #fff; border-color: var(--red); }
.btn.small { padding: 3px 9px; font-size: 11px; }

table.grid { width: 100%; border-collapse: collapse; font-size: 13px; }
table.grid th, table.grid td {
  padding: 9px 10px; border-bottom: 1px solid var(--border); text-align: left;
}
table.grid th {
  color: var(--muted); font-weight: 600; font-size: 10px;
  letter-spacing: 1.5px; text-transform: uppercase;
}

.ok   { color: var(--green); }
.warn { color: var(--tan); }
.bad  { color: var(--red); }
.hint, .muted { color: var(--hint); font-size: 12px; }
.muted { color: var(--muted); }
code  { background: var(--surface-2); padding: 1px 5px; border-radius: 3px;
        font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 12px; }
pre.token {
  background: var(--surface-2); border: 1px solid var(--border); border-radius: 4px;
  padding: 10px; font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 12px;
  word-break: break-all; white-space: pre-wrap; max-height: 110px; overflow: auto;
  color: var(--tan-2);
}

/* Legacy 4-up metric cards (pre-stat-grid layout — kept for change-pw etc.) */
.metrics { display: grid; gap: 10px;
           grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
           margin-bottom: 14px; }
.metric  { background: var(--surface-2); border: 1px solid var(--border);
           border-radius: 6px; padding: 10px; }
.m-name  { color: var(--muted); font-size: 11px; letter-spacing: 0.5px;
           text-transform: uppercase; }
.m-value { font-size: 22px; margin-top: 2px; }
.m-unit  { font-size: 12px; color: var(--muted); margin-left: 4px; }
.m-meta  { color: var(--hint); font-size: 11px; margin-top: 4px; }

dialog {
  background: var(--surface); color: var(--text);
  border: 1px solid var(--border); border-radius: 10px; padding: 20px;
  box-shadow: 0 18px 60px var(--modal-shadow);
}
dialog::backdrop { background: rgba(0,0,0,0.55); }

.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: var(--surface-2); border: 1px solid var(--border); color: var(--text);
  padding: 9px 16px; border-radius: 6px; font-size: 13px; z-index: 99;
  transition: opacity 0.2s; box-shadow: 0 10px 30px var(--modal-shadow);
}
.toast.hidden { opacity: 0; pointer-events: none; }
.toast.bad    { border-color: var(--red); color: var(--red); }

/* --- Device detail page --------------------------------------------------- */

.device-header { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.device-header h1 { font-size: 22px; font-weight: 600; margin: 0 0 4px;
                    letter-spacing: 1px; text-transform: none; }
.dh-meta { color: var(--muted); font-size: 12px; display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.dh-meta .sep { color: var(--hint); }
.dh-meta #devLastSeen, .dh-meta #devCreated, .dh-meta #devStatusText { color: var(--text); }
.dh-right { display: flex; gap: 8px; align-items: center; }

.status-dot {
  width: 9px; height: 9px; border-radius: 50%; display: inline-block;
  background: var(--hint);
}
.status-dot.fresh { background: var(--green);
                    box-shadow: 0 0 8px var(--green);
                    animation: pulse 2.4s infinite; }
.status-dot.stale { background: var(--tan); box-shadow: 0 0 6px var(--tan); }
.status-dot.off   { background: var(--red); }
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0   rgba(58,152,80,0.40); }
  70%  { box-shadow: 0 0 0 8px rgba(58,152,80,0); }
  100% { box-shadow: 0 0 0 0   rgba(58,152,80,0); }
}

.toolbar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap;
           padding: 8px 0 14px; border-bottom: 1px solid var(--border); margin-bottom: 14px; }
.toolbar-grp { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.toolbar-spacer { flex: 1; }
.toolbar input[type=datetime-local], .toolbar select {
  background: var(--input-bg-2); color: var(--text);
  border: 1px solid var(--border); border-radius: 4px;
  padding: 5px 8px; font: inherit; font-size: 12px;
  color-scheme: dark;
}
html.theme-light .toolbar input[type=datetime-local],
html.theme-light .toolbar select { color-scheme: light; }

.seg { display: inline-flex; border: 1px solid var(--border); border-radius: 5px;
       overflow: hidden; background: var(--surface-2); }
.seg-btn { background: transparent; color: var(--muted); border: none;
           padding: 5px 14px; font: inherit; font-size: 11px;
           letter-spacing: 1px; text-transform: uppercase; cursor: pointer; }
.seg-btn.active { background: var(--tan); color: #0E1F2E; font-weight: 600; }
.seg-btn:not(.active):hover { color: var(--text); }

.empty-state { text-align: center; padding: 50px 20px; color: var(--muted); }
.es-icon { font-size: 38px; margin-bottom: 8px; opacity: 0.6; }
.es-title { font-size: 15px; color: var(--text); margin-bottom: 4px; }
.es-hint  { font-size: 12px; color: var(--hint); }

.stats-grid {
  display: grid; gap: 10px;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  margin-bottom: 16px;
}
.stat-card {
  background: var(--surface-2); border: 1px solid var(--border);
  border-left: 3px solid var(--tan); border-radius: 6px;
  padding: 10px 12px; display: flex; flex-direction: column; gap: 6px;
  transition: border-color 120ms, transform 120ms;
}
.stat-card-clickable { cursor: pointer; }
.stat-card-clickable:hover {
  border-color: var(--tan);
  transform: translateY(-1px);
}
.sc-head  { display: flex; align-items: center; justify-content: space-between; }
.sc-name  { color: var(--text); font-size: 11px; letter-spacing: 1.5px;
            text-transform: uppercase; font-weight: 600; }
.sc-status { font-size: 10px; letter-spacing: 0.5px; text-transform: uppercase; }
.sc-status.sc-ok    { color: var(--green); }
.sc-status.sc-warn  { color: var(--tan); }
.sc-status.sc-bad   { color: var(--red); }
.sc-status.sc-muted { color: var(--hint); }
.sc-value { font-size: 22px; font-variant-numeric: tabular-nums; line-height: 1.1;
            white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sc-unit  { font-size: 12px; color: var(--muted); margin-left: 4px; }
.sc-spark { width: 100% !important; height: 36px !important; display: block; }
.sc-stats {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 6px;
  font-size: 11px; color: var(--text); font-variant-numeric: tabular-nums;
}
.sc-stats > div { display: flex; gap: 4px; align-items: baseline;
                  min-width: 0; overflow: hidden; text-overflow: ellipsis;
                  white-space: nowrap; }
.sc-meta { color: var(--hint); font-size: 11px; }

.chart-wrap { position: relative; height: 320px; }

/* Devices index — last-seen badge */
.dev-link { display: flex; align-items: center; gap: 8px; }
.dev-link .status-dot { width: 8px; height: 8px; }

/* =========================================================================
   COMPARE PAGE — card + chip picker UI
   ========================================================================= */

/* Top toolbar / header card */
.cmp-toolbar-card {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; flex-wrap: wrap;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 10px; padding: 14px 18px; margin-bottom: 14px;
}
.cmp-toolbar-left h1 { font-size: 18px; }
.cmp-toolbar-right { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }

/* Pickers card — holds both DEVICES and CHANNELS sections */
.cmp-pickers-card { padding: 14px 18px; }
.cmp-section { margin-bottom: 18px; }
.cmp-section:last-child { margin-bottom: 0; }
.cmp-section-head {
  display: flex; align-items: center; gap: 12px;
  padding-bottom: 8px; margin-bottom: 10px;
  border-bottom: 1px solid var(--border);
}
.cmp-section-title {
  color: var(--muted); font-size: 11px; letter-spacing: 1.5px;
  font-weight: 700; text-transform: uppercase;
}
.cmp-section-hint { font-size: 11px; }

/* Device cards — grid, click-to-toggle */
.cmp-dev-grid {
  display: grid; gap: 8px;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
}
.cmp-dev-card {
  position: relative;
  display: flex; flex-direction: column; gap: 6px;
  background: var(--surface-2); color: var(--text);
  border: 1px solid var(--border); border-radius: 8px;
  padding: 10px 12px;
  text-align: left; font: inherit; cursor: pointer;
  transition: border-color 120ms, background 120ms, transform 80ms;
}
.cmp-dev-card:hover { border-color: var(--tan); }
.cmp-dev-card:active { transform: translateY(1px); }
.cmp-dev-card.active {
  border-color: var(--tan);
  background: linear-gradient(180deg, rgba(200,158,106,0.10), var(--surface-2));
  box-shadow: 0 0 0 1px var(--tan) inset;
}
.cdc-head { display: flex; align-items: center; gap: 8px; }
.cdc-name {
  flex: 1; min-width: 0; font-weight: 600; font-size: 13px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.cdc-check {
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--surface); border: 1px solid var(--border);
  color: transparent; font-size: 12px; line-height: 18px;
  text-align: center; flex-shrink: 0;
  transition: all 120ms;
}
.cmp-dev-card.active .cdc-check {
  background: var(--tan); border-color: var(--tan); color: #0E1F2E; font-weight: 700;
}
.cdc-meta {
  display: flex; gap: 6px; align-items: baseline;
  font-size: 11px;
}
.cdc-id {
  color: var(--hint); font-size: 10px;
  font-family: ui-monospace, Menlo, Consolas, monospace;
}

/* Channel chips — pill row */
.cmp-chip-row { display: flex; flex-wrap: wrap; gap: 8px; }
.cmp-chip {
  --chip-color: var(--muted);
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 14px;
  background: var(--surface-2); color: var(--text);
  border: 1px solid var(--border); border-radius: 999px;
  font: inherit; font-size: 12px; cursor: pointer;
  transition: border-color 120ms, background 120ms;
}
.cmp-chip:hover { border-color: var(--chip-color); }
.cmp-chip-dot {
  display: inline-block; width: 8px; height: 8px; border-radius: 50%;
  background: var(--chip-color);
}
.cmp-chip.active {
  background: var(--chip-color);
  border-color: var(--chip-color);
  color: #0E1F2E;
  font-weight: 600;
}
.cmp-chip.active .cmp-chip-dot { background: #0E1F2E; }
html.theme-light .cmp-chip.active { color: #FFFFFF; }
html.theme-light .cmp-chip.active .cmp-chip-dot { background: #FFFFFF; }

/* Chart area — bigger than the standard wrap on this page */
.cmp-chart-wrap { position: relative; height: 420px; margin-bottom: 14px; }
.cmp-stats {
  display: grid; gap: 10px;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
}

/* Empty state — bigger / nicer than the small one used elsewhere */
.cmp-empty {
  text-align: center; padding: 70px 20px;
  color: var(--muted);
}
.cmp-empty-icon {
  font-size: 56px; opacity: 0.5; margin-bottom: 10px;
  color: var(--tan);
}
.cmp-empty-title { font-size: 16px; color: var(--text); margin-bottom: 6px; font-weight: 600; }
.cmp-empty-hint  { font-size: 12px; color: var(--hint); }

/* =========================================================================
   MOBILE / NARROW VIEWPORT — global responsive overrides
   ========================================================================= */

/* Tablet and below */
@media (max-width: 820px) {
  main { padding: 0 14px; margin: 14px auto; }

  /* Header — wrap, shrink, allow logout + theme toggle to drop to new line */
  .topbar {
    padding: 10px 14px; gap: 10px; flex-wrap: wrap;
  }
  .brand { font-size: 15px; letter-spacing: 1.5px; }
  .topbar nav {
    width: 100%; margin-left: 0; gap: 10px;
    flex-wrap: wrap; justify-content: flex-start;
    border-top: 1px solid var(--border); padding-top: 8px;
  }
  .topbar nav .who { font-size: 10px; flex-basis: 100%; order: -1; color: var(--hint); }
  .topbar nav a { font-size: 10px; letter-spacing: 1px; }

  /* Card padding */
  .card { padding: 12px; margin-bottom: 12px; }
  .card.narrow { max-width: 100%; }
  .card-head { gap: 8px; }
  .card-head h1 { font-size: 14px; }
  h1 { font-size: 14px; letter-spacing: 1px; }
  h2 { font-size: 10px; letter-spacing: 1.5px; }

  /* Tables: horizontal scroll instead of overflowing the card */
  table.grid {
    display: block; overflow-x: auto; white-space: nowrap;
    -webkit-overflow-scrolling: touch;
  }
  table.grid thead, table.grid tbody, table.grid tr {
    /* keep as table semantics for screen readers, but allow scroll */
  }
  table.grid th, table.grid td {
    padding: 8px; font-size: 12px;
  }

  /* Toolbar on device detail — let it wrap instead of squishing */
  .toolbar { gap: 8px; padding-bottom: 10px; margin-bottom: 10px; }
  .toolbar-grp { gap: 6px; }
  .toolbar input[type=datetime-local], .toolbar select {
    font-size: 12px; padding: 4px 6px;
  }
  .seg-btn { padding: 5px 10px; font-size: 10px; letter-spacing: 0.5px; }

  /* Device-detail header — stack vertically */
  .device-header {
    flex-direction: column; align-items: flex-start; gap: 10px;
  }
  .device-header h1 { font-size: 18px; }
  .dh-meta { font-size: 11px; }
  .dh-right {
    width: 100%; display: flex; flex-wrap: wrap; gap: 6px;
  }
  .dh-right .btn { flex: 1 1 auto; }

  /* Stats grid: 2 columns minimum so cards don't shrink to nothing */
  .stats-grid {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  }

  /* Charts: shorter on mobile */
  .chart-wrap { height: 240px; }

  /* Dialogs — fill the viewport on mobile */
  dialog {
    margin: 0; padding: 16px;
    width: 100%; max-width: 100%;
    height: auto; max-height: 100vh;
    border-radius: 0;
    /* center horizontally; bottom = 0 so it sits at the bottom of the viewport
       (action-sheet style) — looks more native on phones than a centered modal. */
    position: fixed; bottom: 0; left: 0; right: 0; top: auto;
  }
  dialog.narrow { width: 100%; }

  /* Compare page tweaks */
  .cmp-toolbar-card { padding: 12px; }
  .cmp-pickers-card { padding: 12px; }
  .cmp-toolbar-card .cmp-toolbar-right { width: 100%; gap: 6px; }
  .cmp-toolbar-card .cmp-toolbar-right .btn,
  .cmp-toolbar-card .cmp-toolbar-right select { font-size: 12px; padding: 4px 8px; }
  .cmp-dev-grid { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 6px; }
  .cmp-dev-card { padding: 8px 10px; }
  .cdc-name { font-size: 12px; }
  .cmp-chip { padding: 5px 10px; font-size: 11px; }
  .cmp-chart-wrap { height: 280px; }
  .cmp-empty { padding: 40px 16px; }
  .cmp-empty-icon { font-size: 40px; }
  .cmp-empty-title { font-size: 14px; }
  .cmp-stats { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }

  /* Usage bar — full-width on mobile */
  .usage-numbers { font-size: 12px; }
}

/* Phones */
@media (max-width: 480px) {
  main { padding: 0 10px; margin: 10px auto; }

  .topbar { padding: 8px 10px; }
  .brand { font-size: 13px; letter-spacing: 1px; }
  .topbar nav { gap: 8px; padding-top: 6px; }

  .card { padding: 10px; }
  table.grid th, table.grid td { padding: 6px 8px; font-size: 11px; }

  /* Device-detail toolbar: each control on its own row group */
  .toolbar { flex-direction: column; align-items: stretch; }
  .toolbar-grp { width: 100%; justify-content: space-between; }
  .toolbar-grp .seg { flex: 1; }
  .toolbar-grp .seg-btn { flex: 1; text-align: center; }
  .toolbar .toolbar-spacer { display: none; }

  /* Stat grid one column on phones */
  .stats-grid, .cmp-stats {
    grid-template-columns: 1fr;
  }

  .chart-wrap, .cmp-chart-wrap { height: 240px; }

  /* Compare device grid: single column on phones */
  .cmp-dev-grid { grid-template-columns: 1fr; }
}

/* Storage usage bar (Account page) */
.usage-box {
  margin: 14px 0 6px; padding: 12px;
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: 6px;
}
.usage-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 8px; }
.usage-title { color: var(--muted); font-size: 11px; letter-spacing: 1.5px; text-transform: uppercase; font-weight: 600; }
.usage-numbers { color: var(--text); font-variant-numeric: tabular-nums; font-size: 13px; }
.usage-bar {
  width: 100%; height: 8px; background: var(--bg);
  border: 1px solid var(--border); border-radius: 4px; overflow: hidden;
}
.usage-bar-fill {
  height: 100%; background: var(--green);
  transition: width 240ms, background 240ms;
}
.usage-bar-fill.warn { background: var(--tan); }
.usage-bar-fill.bad  { background: var(--red); }
.usage-meta { font-size: 11px; margin-top: 6px; }
