/* ------------------------------------------------------------------
   Light ("normal") theme. Dark is the default; the choice is stored per
   browser and toggled from the header (sun / moon button).
   Camera tiles keep their dark HUD so overlays stay legible on video.
------------------------------------------------------------------- */
:root[data-theme="light"] {
  --bg: #eef3f1;
  --bg2: #e6ece9;
  --panel: rgba(255, 255, 255, 0.92);
  --panel-solid: #ffffff;
  --line: rgba(15, 34, 53, 0.10);
  --line-strong: rgba(15, 34, 53, 0.20);
  --text: #0f2235;
  --muted: #536576;
  --dim: #7a8b99;
  --teal: #0f8f86;
  --green: #2f9e5a;
  --amber: #c27b00;
  --red: #d7343a;
  --shadow: 0 1px 2px rgba(15,34,53,.06), 0 8px 22px rgba(15,34,53,.07);
  color-scheme: light;
}
:root[data-theme="light"] body {
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(18, 85, 76, 0.08), transparent 60%),
    radial-gradient(900px 500px at 100% 0%, rgba(102, 143, 69, 0.08), transparent 60%),
    var(--bg);
}
:root[data-theme="light"] body::before { opacity: .5; }

/* header */
:root[data-theme="light"] .topbar { background: linear-gradient(100deg, #12554c 0%, #2f6f4b 45%, #4d7f3a 75%, #668f45 100%); border-bottom: 0; box-shadow: 0 4px 16px rgba(15,34,53,.15); }
:root[data-theme="light"] .topbar .brand .prod small,
:root[data-theme="light"] .topbar .clock small,
:root[data-theme="light"] .topbar .powered small { color: rgba(255,255,255,.8); }
:root[data-theme="light"] .topbar .clock b,
:root[data-theme="light"] .topbar .brand .prod b { color: #fff; }
:root[data-theme="light"] .topbar .brand .prod b span { background: linear-gradient(90deg, #c9f7a0, #fff); -webkit-background-clip: text; background-clip: text; }
:root[data-theme="light"] .nav button { color: rgba(255,255,255,.85); }
:root[data-theme="light"] .nav button:hover { color: #fff; background: rgba(255,255,255,.12); }
:root[data-theme="light"] .nav button.active { color: #12554c; background: #fff; box-shadow: 0 4px 14px rgba(0,0,0,.18); }
:root[data-theme="light"] .nav button.active .badge { background: #12554c; color: #fff; }
:root[data-theme="light"] .topbar .icon-btn { background: rgba(255,255,255,.14); border-color: rgba(255,255,255,.3); color: #fff; }
:root[data-theme="light"] .topbar .reset-btn { color: #ffe3a3; }
:root[data-theme="light"] .topbar .shift { background: rgba(255,255,255,.16); border-color: rgba(255,255,255,.35); color: #fff; }
:root[data-theme="light"] .topbar .live-pill { background: rgba(255,255,255,.95); border-color: #fff; color: #c0262c; }
:root[data-theme="light"] .topbar .sep { background: rgba(255,255,255,.35); }

/* panels & text */
:root[data-theme="light"] .panel-h h3 { color: #1b3346; }
:root[data-theme="light"] .panel-h h3 .ic { color: #12554c; }
:root[data-theme="light"] .chip.ok { color: #1e7a45; background: rgba(47,158,90,.1); border-color: rgba(47,158,90,.4); }
:root[data-theme="light"] .chip.warn { color: #925c00; background: rgba(194,123,0,.1); border-color: rgba(194,123,0,.4); }
:root[data-theme="light"] .chip.bad { color: #b4232a; background: rgba(215,52,58,.08); border-color: rgba(215,52,58,.4); }
:root[data-theme="light"] .fnode,
:root[data-theme="light"] .alert-item,
:root[data-theme="light"] .gcard,
:root[data-theme="light"] .big-stat div,
:root[data-theme="light"] .channel,
:root[data-theme="light"] .grade-legend div,
:root[data-theme="light"] .acc .io div,
:root[data-theme="light"] .btn { background: #f6f9f8; }
:root[data-theme="light"] .alert-item:hover, :root[data-theme="light"] .tbl tr:hover td { background: #edf3f1; }
:root[data-theme="light"] .fnode .cnt, :root[data-theme="light"] .kpi .val { color: #0f2235; }
:root[data-theme="light"] .fconn .rail { background: repeating-linear-gradient(90deg, rgba(18,85,76,0.35) 0 6px, transparent 6px 12px); }
:root[data-theme="light"] .fconn .arrow { border-left-color: rgba(18,85,76,.6); }
:root[data-theme="light"] .ftile { background: #12554c; }
:root[data-theme="light"] .btn.primary { background: linear-gradient(135deg, #12554c, #4d7f3a); color: #fff; }
:root[data-theme="light"] .btn:hover { color: #12554c; border-color: #12554c; }
:root[data-theme="light"] .seg button.active { background: rgba(18,85,76,.1); color: #12554c; }
:root[data-theme="light"] .tbl th { background: #f4f7f6; }
:root[data-theme="light"] .tcard { background: #fff; }
:root[data-theme="light"] .acc-ring b, :root[data-theme="light"] .acc .io b { color: #0f2235; }
:root[data-theme="light"] .flash-num { animation-name: flashnumL; }
@keyframes flashnumL { 0% { color: #12554c; } 100% { color: inherit; } }
:root[data-theme="light"] .wall-hint, :root[data-theme="light"] .footer { color: var(--muted); }

/* modals, toasts, theatre */
:root[data-theme="light"] .modal-bg { background: rgba(15,34,53,.45); }
:root[data-theme="light"] .toast { background: rgba(255,255,255,.97); color: #0f2235; }
:root[data-theme="light"] .toast .tm { color: #536576; }
:root[data-theme="light"] .toast .tn { color: #1e7a45; }
:root[data-theme="light"] .toast.overlap { background: rgba(255,250,238,.98); }
:root[data-theme="light"] .theatre { background: rgba(232,239,236,.97); }
:root[data-theme="light"] .user-menu { background: #fff; }
:root[data-theme="light"] .reset-flash { background: radial-gradient(circle, rgba(18,85,76,.15), rgba(232,239,236,.8)); }
:root[data-theme="light"] .reset-flash b { background: #fff; color: #12554c; }
:root[data-theme="light"] .sound-unlock { background: #fff7e6; color: #8a5600; }

/* camera tiles: keep video area dark in both themes */
.cam { background: #05090d; }

/* ------------------------------------------------------------------
   TileCount 360° tab (separate embedded demo)
------------------------------------------------------------------- */
.page#page-tc360 { margin: -16px -22px -28px; }
.tc360-wrap { position: relative; height: calc(100vh - 68px); min-height: 520px; }
.tc360-wrap iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; background: var(--bg); }
.tc360-load { position: absolute; inset: 0; display: grid; place-items: center; color: var(--muted); font-size: 13px; }
body.tc360-on .footer { display: none; }
.nav button.tc360 .t b { font-weight: 800; }
.nav button.tc360 { border: 1px dashed rgba(163,230,53,.45); }
:root[data-theme="light"] .nav button.tc360 { border-color: rgba(255,255,255,.55); }

/* theme toggle icon */
#themeBtn .sun { display: none; }
:root[data-theme="light"] #themeBtn .sun { display: block; }
:root[data-theme="light"] #themeBtn .moon { display: none; }

/* camera re-sync shimmer (shown while a feed seeks / buffers) */
.cam .buffering { position: absolute; inset: 0; display: none; place-items: center; z-index: 2; pointer-events: none;
  background: radial-gradient(circle at center, rgba(5,9,13,.25), rgba(5,9,13,.75)); color: #cfe2ee; font-size: 12px; font-weight: 600; letter-spacing: .4px; }
.cam.is-buffering .buffering { display: grid; }
.cam .buffering i { width: 22px; height: 22px; border-radius: 50%; border: 2.5px solid rgba(255,255,255,.2); border-top-color: #19d3c5; animation: spin .8s linear infinite; margin: 0 auto 8px; }
.cam video { background: #05090d; }

/* camera tiles always use light HUD text, whatever the theme */
.cam, .cam .camtag, .cam .count .v { color: #e8f1f7; }
.live-pill, .shift { white-space: nowrap; }
/* header fit: icon-only nav (except the active tab and TileCount 360°) on narrower screens */
@media (max-width: 1850px) {
  .nav button:not(.active):not(.tc360) span.t { display: none; }
  .brand .prod small { display: none; }
}
@media (max-width: 1500px) {
  .nav button.tc360:not(.active) span.t { display: none; }
  .brand .prod { display: none; }
  .brand .sep { display: none; }
}
@media (max-width: 1200px) { .nav button span.t { display: none !important; } }

/* sound button states */
#soundBtn .snd-off { display: none; }
#soundBtn.muted { color: #ff8a96; border-color: rgba(255,77,94,.45); background: rgba(255,77,94,.12); }
#soundBtn.muted .snd-on { display: none; }
#soundBtn.muted .snd-off { display: block; }
.mini-toast { position: fixed; left: 50%; top: 84px; transform: translateX(-50%); z-index: 500; padding: 10px 18px; border-radius: 99px; background: rgba(10,18,26,.94); color: #e8f1f7; font-weight: 700; font-size: 13px; border: 1px solid rgba(25,211,197,.45); box-shadow: 0 10px 30px rgba(0,0,0,.35); transition: opacity .4s, transform .4s; }
.mini-toast.out { opacity: 0; transform: translate(-50%, -8px); }
:root[data-theme="light"] .mini-toast { background: #fff; color: #12554c; border-color: rgba(18,85,76,.35); }

/* ---------------------------------------------------------------- brand logos (exact artwork on white badges) */
.logo-chip { display: inline-flex; align-items: center; justify-content: center; background: #fff; border-radius: 10px; padding: 5px 10px; box-shadow: 0 1px 2px rgba(0,0,0,.12), 0 4px 14px rgba(0,0,0,.18); vertical-align: middle; line-height: 0; }
.logo-chip img { display: block; width: auto; filter: none !important; opacity: 1 !important; }
.logo-chip.hdr { padding: 6px 10px; border-radius: 10px; }
.logo-chip.hdr .kaj { height: 24px; }
.logo-chip.hdr .te-logo { height: 22px; }
.powered { flex-direction: row !important; align-items: center !important; gap: 8px !important; }
.logo-chip.lh-chip { padding: 10px 18px; border-radius: 14px; margin-bottom: 26px; }
.logo-chip.lh-chip img { height: 46px; }
.logo-chip.lc-chip { padding: 6px 10px; }
.logo-chip.lc-chip img { height: 24px !important; }
.logo-chip.mini { padding: 3px 7px; border-radius: 7px; }
.logo-chip.mini img { height: 14px !important; }
@media (max-width: 760px) { .logo-chip.hdr .kaj { height: 18px; } .logo-chip.hdr { padding: 4px 8px; } }

/* ---------------------------------------------------------------- How it works */
.how { max-width: 1400px; margin: 0 auto; }
.how-hero { display: grid; grid-template-columns: 1.4fr 1fr; gap: 26px; align-items: center; padding: 26px 6px 22px; }
.hh-kicker { color: var(--teal); font-weight: 800; font-size: 12px; letter-spacing: 1.4px; text-transform: uppercase; margin-bottom: 10px; }
.how-hero h1 { font-size: clamp(28px, 3.4vw, 46px); line-height: 1.08; margin: 0 0 14px; letter-spacing: -1px; }
.how-hero h1 span { background: linear-gradient(90deg, var(--teal), #a3e635); -webkit-background-clip: text; background-clip: text; color: transparent; }
:root[data-theme="light"] .how-hero h1 span { background: linear-gradient(90deg, #12554c, #668f45); -webkit-background-clip: text; background-clip: text; }
.how-hero p { color: var(--muted); font-size: 15.5px; line-height: 1.6; max-width: 720px; margin: 0 0 18px; }
.hh-actions { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.hh-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.hh-stats div { padding: 16px; border-radius: 14px; background: var(--panel); border: 1px solid var(--line); box-shadow: var(--shadow); }
.hh-stats b { display: block; font-size: 30px; font-weight: 850; letter-spacing: -.5px; background: linear-gradient(180deg, var(--text), var(--muted)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hh-stats span { color: var(--muted); font-size: 12px; line-height: 1.35; display: block; margin-top: 4px; }
.how-flow { display: grid; grid-template-columns: 1fr 36px 1fr 36px 1fr 36px 1fr; align-items: stretch; gap: 0; padding: 16px; margin-bottom: 14px; }
.hf-step { padding: 14px; border-radius: 12px; background: linear-gradient(180deg, rgba(25,211,197,.08), transparent); border: 1px solid var(--line); }
.hf-step i { font-style: normal; font-size: 22px; display: block; margin-bottom: 6px; }
.hf-step b { display: block; font-size: 14px; margin-bottom: 4px; }
.hf-step span { color: var(--muted); font-size: 12.5px; line-height: 1.45; }
.hf-arrow { position: relative; }
.hf-arrow::before { content: ""; position: absolute; top: 50%; left: 6px; right: 6px; height: 3px; background: repeating-linear-gradient(90deg, var(--teal) 0 6px, transparent 6px 11px); animation: belt .9s linear infinite; }
.hf-arrow::after { content: ""; position: absolute; top: calc(50% - 5px); right: 2px; border-left: 8px solid var(--teal); border-top: 6px solid transparent; border-bottom: 6px solid transparent; }
.how-grid3 { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 14px; margin-bottom: 14px; }
.how-grid2 { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 14px; margin-bottom: 14px; }
.how-card { padding: 18px 20px; }
.how-card h3 { margin: 6px 0 10px; font-size: 17px; }
.how-card p, .how-card li { color: var(--muted); font-size: 13.5px; line-height: 1.6; }
.how-card p b, .how-card li b { color: var(--text); }
.how-card ul, .how-card ol { padding-left: 18px; margin: 0; }
.how-card li { margin-bottom: 7px; }
.hc-ic { width: 40px; height: 40px; border-radius: 12px; display: grid; place-items: center; font-size: 19px; background: rgba(25,211,197,.1); border: 1px solid rgba(25,211,197,.3); color: var(--teal); }
.how-wide { padding: 18px 20px; margin-bottom: 14px; }
.hw-h { margin: 0 0 14px; font-size: 17px; }
.how-screens { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 12px; }
.how-screens.two { grid-template-columns: 1fr 1fr; }
.how-screens > div { padding: 14px; border-radius: 12px; border: 1px solid var(--line); background: rgba(127,127,127,.04); }
.how-screens b { display: block; margin-bottom: 6px; }
.how-screens p { color: var(--muted); font-size: 13px; line-height: 1.55; margin: 0; }
.hs-n { display: inline-grid; place-items: center; width: 24px; height: 24px; border-radius: 8px; background: var(--teal); color: #04121a; font-weight: 800; font-size: 12px; margin-bottom: 8px; }
:root[data-theme="light"] .hs-n { background: #12554c; color: #fff; }
.how-tbl { width: 100%; border-collapse: collapse; font-size: 13px; margin: 6px 0 10px; }
.how-tbl th { text-align: left; color: var(--dim); font-size: 10.5px; text-transform: uppercase; letter-spacing: .6px; padding: 6px 4px; border-bottom: 1px solid var(--line); }
.how-tbl td { padding: 7px 4px; border-bottom: 1px solid var(--line); font-variant-numeric: tabular-nums; }
.how-tbl td.ok { color: var(--green); font-weight: 800; }
.how-note { font-size: 12px !important; color: var(--dim) !important; }
.arch { display: grid; grid-template-columns: 1fr 28px 1fr 28px 1fr 28px 1fr; align-items: center; }
.arch-ar { text-align: center; color: var(--teal); font-size: 20px; font-weight: 800; }
.arch-t { font-size: 11px; text-transform: uppercase; letter-spacing: 1px; color: var(--dim); font-weight: 800; margin-bottom: 6px; }
.arch-b { padding: 14px; border-radius: 12px; border: 1px solid var(--line-strong); font-weight: 700; background: rgba(25,211,197,.05); }
.arch-b small { display: block; color: var(--muted); font-weight: 500; font-size: 12px; margin-top: 4px; line-height: 1.45; }
.how-card code { font-family: var(--mono); font-size: 12px; background: rgba(127,127,127,.12); padding: 1px 5px; border-radius: 5px; color: var(--text); }
.how-foot { display: flex; align-items: center; gap: 10px; justify-content: center; color: var(--dim); padding: 10px 0 4px; flex-wrap: wrap; }
.how-foot .hf-txt { margin-left: 8px; font-size: 12.5px; }
@media (max-width: 1200px) { .how-screens { grid-template-columns: repeat(2, minmax(0,1fr)); } .how-grid3 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 900px) {
  .how-hero { grid-template-columns: 1fr; }
  .how-flow, .arch { grid-template-columns: 1fr; gap: 8px; }
  .hf-arrow { height: 18px; } .hf-arrow::before { top: 0; bottom: 0; left: 50%; right: auto; width: 3px; height: auto; background: repeating-linear-gradient(180deg, var(--teal) 0 5px, transparent 5px 9px); }
  .hf-arrow::after { display: none; }
  .arch-ar { transform: rotate(90deg); }
  .how-grid3, .how-grid2, .how-screens, .how-screens.two { grid-template-columns: 1fr; }
}
/* print / save as PDF: only the How it works page, both views, light colours */
@media print {
  :root { --bg: #fff; --panel: #fff; --text: #0f2235; --muted: #3d5163; --dim: #6b7b88; --line: #d9e2e8; --line-strong: #c3cfd8; --teal: #12554c; }
  body { background: #fff !important; color: #0f2235; }
  body::before, .topbar, .footer, .toasts, .sound-unlock, .hh-actions, .page:not(#page-how), #login { display: none !important; }
  #app { display: block !important; } body.locked .app { display: block !important; }
  main { padding: 0; } #page-how { display: block !important; }
  .how-view[data-view] { display: block !important; }
  .panel, .hh-stats div { box-shadow: none !important; backdrop-filter: none; break-inside: avoid; }
  .hh-stats b, .how-hero h1 span { -webkit-text-fill-color: #12554c; color: #12554c; background: none; }
}
.arch { align-items: stretch; }
.arch-col { display: flex; flex-direction: column; }
.arch-col .arch-b { flex: 1; }
.arch-ar { align-self: center; padding-top: 18px; }

/* ---------------------------------------------------------------- phone layout polish */
@media (max-width: 760px) {
  .topbar { display: grid; grid-template-columns: auto 1fr; gap: 8px; padding: 10px 12px; }
  .topbar .status { justify-content: flex-end; gap: 6px; min-width: 0; }
  .topbar .live-pill, #runBadge, .topbar .clock, .topbar .powered { display: none !important; }
  .topbar .icon-btn { width: 34px; height: 34px; }
  .nav { gap: 2px; padding-bottom: 2px; }
  .nav button { padding: 8px 10px; }
  .kpi .lbl { white-space: normal; font-size: 10px; line-height: 1.25; }
  .kpi .val { font-size: 24px; }
  .kpi .foot { white-space: normal; font-size: 10.5px; }
  .flow .panel-h { flex-direction: column; align-items: flex-start; }
  .flow-legend { flex-wrap: wrap; gap: 8px; }
  .how-hero { padding-top: 14px; }
  .toasts { left: 12px; right: 12px; width: auto; top: 110px; }
  .theatre { padding: 10px; }
  .th-actions .btn { padding: 7px 10px; font-size: 12px; }
}