/* =============================================================
   GRIDWATCH — control room styling
   ============================================================= */
:root {
  color-scheme: dark;
  --surface-0: #080b0e;
  --surface-1: #101519;
  --surface-2: #161d23;
  --surface-3: #1e262e;
  --line: #263038;
  --line-soft: #1c242b;

  --text-1: #ffffff;
  --text-2: #c3c2b7;
  --text-3: #898781;

  --good: #0ca30c;
  --warning: #fab219;
  --serious: #ec835a;
  --critical: #d03b3b;
  --accent: #3987e5;

  --s-nuclear: #9085e9;
  --s-coal: #a8663c;
  --s-hydro: #3987e5;
  --s-gas: #e0672f;
  --s-wind: #199e70;
  --s-solar: #c98500;
  --s-storage: #d55181;
  --s-fusion: #0e9fb4;

  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --top-h: 52px;
  --freq-h: 54px;
  --dash-h: 236px;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { height: 100%; margin: 0; overflow: hidden; }
body {
  background: var(--surface-0);
  color: var(--text-1);
  font: 13px/1.5 var(--sans);
  -webkit-font-smoothing: antialiased;
  overscroll-behavior: none;
}
button { font: inherit; color: inherit; cursor: pointer; }
kbd {
  font: 11px var(--mono); background: var(--surface-3); border: 1px solid var(--line);
  border-radius: 3px; padding: 1px 5px;
}
::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-thumb { background: #2c363f; border-radius: 5px; }
::-webkit-scrollbar-track { background: transparent; }

/* ============ BOOT ============ */
.overlay {
  position: fixed; inset: 0; z-index: 200; overflow: auto;
  background:
    radial-gradient(1200px 700px at 70% -10%, #17303f 0%, transparent 62%),
    radial-gradient(900px 600px at 10% 110%, #1d2a1f 0%, transparent 60%),
    var(--surface-0);
  display: flex; align-items: center; justify-content: center; padding: 32px 20px;
}
.boot-inner { width: min(1080px, 100%); }
.boot-head { text-align: center; margin-bottom: 28px; }
.logo-lg {
  font: 700 46px/1 var(--sans); letter-spacing: 0.16em; margin-bottom: 10px;
}
.logo-lg span { color: var(--warning); }
.tagline { color: var(--text-2); margin: 0 0 14px; letter-spacing: 0.04em; }
.boot-blurb { max-width: 620px; margin: 0 auto; color: var(--text-3); font-size: 13.5px; }

.scenario-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 12px; margin-bottom: 22px;
}
.scen {
  background: linear-gradient(160deg, var(--surface-2), var(--surface-1));
  border: 1px solid var(--line); border-radius: 10px; padding: 15px 16px 16px;
  text-align: left; transition: border-color .15s, transform .15s, background .15s;
}
.scen:hover { border-color: var(--accent); transform: translateY(-2px); }
.scen h3 { margin: 0 0 3px; font-size: 15px; }
.scen .diff {
  font: 600 10px var(--mono); letter-spacing: .09em; text-transform: uppercase;
  color: var(--warning); margin-bottom: 8px; display: block;
}
.scen .tag { color: var(--text-2); font-size: 12.5px; margin: 0 0 8px; }
.scen .desc { color: var(--text-3); font-size: 11.5px; margin: 0; }
.boot-foot { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.boot-hint { color: var(--text-3); font-size: 11.5px; }

/* ============ APP SHELL ============ */
#app { position: fixed; inset: 0; display: flex; flex-direction: column; }

#topbar {
  height: var(--top-h); flex: none; display: flex; align-items: center; gap: 18px;
  padding: 0 12px; background: var(--surface-1);
  border-bottom: 1px solid var(--line); z-index: 40;
}
.tb-left { display: flex; align-items: center; gap: 14px; }
.logo { font: 700 16px/1 var(--sans); letter-spacing: .14em; }
.logo span { color: var(--warning); }
.clock { line-height: 1.15; }
.clock-time { font: 600 16px/1 var(--mono); font-variant-numeric: tabular-nums; }
.clock-date { font-size: 10.5px; color: var(--text-3); }

.speeds { display: flex; gap: 2px; background: var(--surface-0); border-radius: 6px; padding: 2px; }
.speeds button {
  background: none; border: 0; padding: 4px 7px; border-radius: 4px;
  color: var(--text-3); font-size: 9px; letter-spacing: -1px;
}
.speeds button.on { background: var(--accent); color: #fff; }
.speeds button:hover:not(.on) { background: var(--surface-3); color: var(--text-1); }

.tb-metrics { flex: 1; display: flex; gap: 4px; overflow: hidden; justify-content: flex-end; }
.metric {
  min-width: 88px; padding: 4px 9px; border-left: 1px solid var(--line-soft);
  cursor: help;
}
.metric .m-k {
  font: 500 9.5px var(--sans); letter-spacing: .07em; text-transform: uppercase;
  color: var(--text-3); white-space: nowrap;
}
.metric .m-v {
  font: 600 15px var(--mono); font-variant-numeric: tabular-nums; white-space: nowrap;
}
.metric .m-v small { font-size: 10px; color: var(--text-3); font-weight: 400; margin-left: 2px; }
.metric.good .m-v { color: var(--good); }
.metric.warning .m-v { color: var(--warning); }
.metric.critical .m-v { color: var(--critical); }

.tb-right { display: flex; gap: 5px; }
.btn {
  background: var(--surface-3); border: 1px solid var(--line); border-radius: 6px;
  padding: 6px 12px; color: var(--text-1); transition: background .12s, border-color .12s;
}
.btn:hover { background: #28323b; border-color: #3a4750; }
.btn:disabled { opacity: .4; cursor: not-allowed; }
.btn-sq { padding: 6px 9px; position: relative; font-size: 14px; line-height: 1; }
.btn-ghost { background: transparent; }
.btn-wide { width: 100%; text-align: center; }
.btn-primary { background: var(--accent); border-color: var(--accent); }
.btn-primary:hover { background: #4b94ea; }
.badge {
  position: absolute; top: -4px; right: -4px; background: var(--warning); color: #000;
  font: 700 9px var(--mono); border-radius: 8px; padding: 1px 4px; display: none;
}
.badge.on { display: block; }

/* ============ FREQ STRIP ============ */
#freqstrip {
  height: var(--freq-h); flex: none; display: flex; align-items: center; gap: 14px;
  padding: 0 12px; background: var(--surface-0); border-bottom: 1px solid var(--line);
}
.fs-gauge { display: flex; align-items: baseline; gap: 6px; min-width: 210px; }
.fs-label {
  font: 500 9.5px var(--sans); letter-spacing: .1em; color: var(--text-3);
  writing-mode: horizontal-tb; width: 78px; line-height: 1.15; cursor: help;
}
.fs-value { font: 700 26px/1 var(--mono); font-variant-numeric: tabular-nums; }
.fs-unit { color: var(--text-3); font-size: 12px; }
#freqCanvas { flex: 1; height: 46px; }
.fs-side { display: flex; gap: 12px; }
.fs-mini { text-align: right; min-width: 62px; }
.fs-mini span { display: block; font-size: 9.5px; color: var(--text-3); letter-spacing: .06em; cursor: help; }
.fs-mini b { font: 600 13px var(--mono); font-variant-numeric: tabular-nums; }
.fs-mini i { font-style: normal; font-size: 9.5px; color: var(--text-3); margin-left: 2px; }

/* ============ VIEWPORT ============ */
#viewport { flex: 1; position: relative; min-height: 0; }
#scene { width: 100%; height: 100%; display: block; }
#noWebGL {
  position: absolute; inset: 0; display: flex; flex-direction: column;
  align-items: center; justify-content: center; text-align: center; padding: 40px;
  background: var(--surface-1);
}
#noWebGL p { max-width: 420px; color: var(--text-2); }

/* build palette */
#buildbar {
  position: absolute; top: 12px; left: 12px; width: 226px; z-index: 20;
  background: rgba(16,21,25,.93); backdrop-filter: blur(9px);
  border: 1px solid var(--line); border-radius: 10px; overflow: hidden;
  display: flex; flex-direction: column; max-height: calc(100% - 24px);
}
.bb-head {
  font: 600 10px var(--sans); letter-spacing: .14em; color: var(--text-3);
  padding: 9px 12px 7px;
}
.bb-tabs { display: flex; padding: 0 6px 6px; gap: 3px; }
.bb-tabs button {
  flex: 1; background: none; border: 0; padding: 5px 2px; border-radius: 5px;
  font-size: 10.5px; color: var(--text-3);
}
.bb-tabs button.on { background: var(--surface-3); color: var(--text-1); }
.bb-list { overflow-y: auto; padding: 0 6px 6px; }
.bitem {
  display: flex; gap: 9px; align-items: flex-start; width: 100%; text-align: left;
  background: none; border: 1px solid transparent; border-radius: 7px;
  padding: 7px 8px; margin-bottom: 2px;
}
.bitem:hover { background: var(--surface-2); border-color: var(--line); }
.bitem.on { background: rgba(57,135,229,.16); border-color: var(--accent); }
.bitem:disabled { opacity: .38; cursor: not-allowed; }
.bitem .swatch { width: 4px; align-self: stretch; border-radius: 2px; flex: none; }
.bitem .bi-main { flex: 1; min-width: 0; }
.bitem .bi-name { font-size: 12px; font-weight: 500; }
.bitem .bi-sub {
  font: 10.5px var(--mono); color: var(--text-3); font-variant-numeric: tabular-nums;
  display: flex; gap: 8px; flex-wrap: wrap;
}
.bitem .bi-cost { color: var(--text-2); }
.bb-foot { padding: 7px; border-top: 1px solid var(--line-soft); display: grid; gap: 5px; }

/* inspector */
#inspector {
  position: absolute; top: 12px; right: 12px; width: 292px; z-index: 20;
  background: rgba(16,21,25,.94); backdrop-filter: blur(9px);
  border: 1px solid var(--line); border-radius: 10px;
  max-height: calc(100% - 24px); overflow-y: auto;
}
.insp-head {
  display: flex; align-items: flex-start; gap: 8px; padding: 12px 12px 8px;
  border-bottom: 1px solid var(--line-soft);
}
.insp-head h3 { margin: 0; font-size: 14px; flex: 1; }
.insp-head .insp-x { background: none; border: 0; color: var(--text-3); font-size: 15px; padding: 0 2px; }
.insp-kind { font: 10px var(--mono); letter-spacing: .08em; color: var(--text-3); text-transform: uppercase; }
.insp-body { padding: 10px 12px 12px; }
.rowstat { display: flex; justify-content: space-between; gap: 10px; padding: 3px 0; font-size: 12px; }
.rowstat span { color: var(--text-3); }
.rowstat b { font: 600 12px var(--mono); font-variant-numeric: tabular-nums; }
.bar { height: 5px; background: var(--surface-3); border-radius: 3px; overflow: hidden; margin: 5px 0 9px; }
.bar i { display: block; height: 100%; border-radius: 3px; background: var(--accent); }
.insp-note {
  font-size: 11.5px; color: var(--text-3); border-left: 2px solid var(--line);
  padding-left: 9px; margin: 10px 0 4px;
}
.modeswitch { display: flex; gap: 3px; margin: 8px 0; }
.modeswitch button {
  flex: 1; background: var(--surface-2); border: 1px solid var(--line); border-radius: 5px;
  padding: 4px; font-size: 10.5px; color: var(--text-3);
}
.modeswitch button.on { background: var(--accent); border-color: var(--accent); color: #fff; }

/* alerts */
#alerts {
  position: absolute; bottom: 12px; left: 50%; transform: translateX(-50%);
  width: min(560px, calc(100% - 480px)); z-index: 22; display: grid; gap: 5px;
  pointer-events: none;
}
.alert {
  background: rgba(12,16,20,.95); border: 1px solid var(--line); border-left-width: 3px;
  border-radius: 7px; padding: 8px 11px; font-size: 12px; pointer-events: auto;
  display: flex; gap: 9px; align-items: flex-start;
  animation: slideUp .25s ease;
}
@keyframes slideUp { from { opacity: 0; transform: translateY(9px); } }
.alert.good { border-left-color: var(--good); }
.alert.warning { border-left-color: var(--warning); }
.alert.serious { border-left-color: var(--serious); }
.alert.critical { border-left-color: var(--critical); }
.alert .a-text { flex: 1; }
.alert .a-learn {
  background: none; border: 1px solid var(--line); border-radius: 4px;
  font-size: 10px; padding: 2px 6px; color: var(--text-2); white-space: nowrap;
}
.alert .a-x { background: none; border: 0; color: var(--text-3); }

#buildHint {
  position: absolute; bottom: 12px; left: 12px; z-index: 21;
  background: rgba(12,16,20,.94); border: 1px solid var(--accent);
  border-radius: 8px; padding: 9px 13px; font-size: 12px; max-width: 300px;
}
#buildHint b { color: var(--accent); }

#objectives {
  position: absolute; top: 12px; left: 250px; z-index: 19;
  background: rgba(16,21,25,.9); border: 1px solid var(--line);
  border-radius: 9px; padding: 9px 12px; max-width: 300px;
}
#objectives h4 { margin: 0 0 6px; font-size: 10px; letter-spacing: .12em; color: var(--text-3); }
.obj { display: flex; gap: 7px; font-size: 11.5px; padding: 2px 0; color: var(--text-2); }
.obj i { font-style: normal; color: var(--text-3); }
.obj.met { color: var(--good); }
.obj.met i { color: var(--good); }

/* ============ DASHBOARD ============ */
#dash {
  height: var(--dash-h); flex: none; background: var(--surface-1);
  border-top: 1px solid var(--line); display: flex; flex-direction: column;
  transition: height .2s ease;
}
#dash.collapsed { height: 33px; }
.dash-tabs { display: flex; gap: 2px; padding: 4px 6px 0; border-bottom: 1px solid var(--line-soft); }
.dash-tabs button {
  background: none; border: 0; border-bottom: 2px solid transparent;
  padding: 5px 11px 6px; font-size: 11.5px; color: var(--text-3);
}
.dash-tabs button.on { color: var(--text-1); border-bottom-color: var(--accent); }
.dash-toggle { margin-left: auto; }
.dash-body { flex: 1; min-height: 0; position: relative; }
.dash-pane { position: absolute; inset: 0; display: none; padding: 4px 8px 6px; overflow: auto; }
.dash-pane.on { display: block; }
.dash-pane canvas { width: 100%; height: 100%; display: block; }
#dash.collapsed .dash-body { display: none; }

.econ-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(168px, 1fr)); gap: 8px; padding: 4px 2px; }
.tile {
  background: var(--surface-2); border: 1px solid var(--line-soft);
  border-radius: 8px; padding: 9px 11px;
}
.tile .t-k { font-size: 10px; letter-spacing: .07em; color: var(--text-3); text-transform: uppercase; }
.tile .t-v { font: 600 19px var(--mono); font-variant-numeric: tabular-nums; margin-top: 2px; }
.tile .t-s { font-size: 10.5px; color: var(--text-3); }
.tile.good .t-v { color: var(--good); }
.tile.warning .t-v { color: var(--warning); }
.tile.critical .t-v { color: var(--critical); }

table.dt { width: 100%; border-collapse: collapse; font-size: 11.5px; }
table.dt th {
  text-align: right; font-weight: 500; color: var(--text-3); padding: 4px 8px;
  border-bottom: 1px solid var(--line); font-size: 10px; letter-spacing: .05em; text-transform: uppercase;
}
table.dt th:first-child, table.dt td:first-child { text-align: left; }
table.dt td {
  text-align: right; padding: 4px 8px; border-bottom: 1px solid var(--line-soft);
  font-family: var(--mono); font-variant-numeric: tabular-nums;
}
table.dt td.neg { color: var(--critical); }
table.dt td.pos { color: var(--good); }
.evrow { padding: 7px 2px; border-bottom: 1px solid var(--line-soft); display: flex; gap: 10px; }
.evrow .ev-dot { width: 7px; height: 7px; border-radius: 4px; margin-top: 5px; flex: none; }
.evrow h5 { margin: 0 0 2px; font-size: 12px; }
.evrow p { margin: 0; font-size: 11.5px; color: var(--text-3); }

/* ============ MODALS ============ */
.modal {
  position: fixed; inset: 0; z-index: 120; background: rgba(4,6,8,.72);
  display: flex; align-items: center; justify-content: center; padding: 24px;
  backdrop-filter: blur(3px);
}
.modal-box {
  background: var(--surface-1); border: 1px solid var(--line); border-radius: 12px;
  width: min(720px, 100%); max-height: calc(100vh - 48px); display: flex; flex-direction: column;
  box-shadow: 0 24px 70px rgba(0,0,0,.6);
}
.modal-wide { width: min(1040px, 100%); }
.modal-narrow { width: min(480px, 100%); }
.modal-head {
  display: flex; align-items: center; gap: 12px; padding: 14px 16px;
  border-bottom: 1px solid var(--line);
}
.modal-head h2 { margin: 0; font-size: 16px; flex: 1; }
.modal-x { background: none; border: 0; color: var(--text-3); font-size: 16px; }
.modal-content { padding: 14px 16px 18px; overflow-y: auto; }
.rp-counter { font-size: 11.5px; color: var(--text-3); }
.rp-counter b { color: var(--warning); font-family: var(--mono); font-size: 14px; margin-left: 4px; }
input[type="search"] {
  background: var(--surface-0); border: 1px solid var(--line); border-radius: 6px;
  padding: 5px 10px; color: var(--text-1); font: inherit; width: 210px;
}

/* research tree */
.rnd-budget {
  padding: 10px 16px; border-bottom: 1px solid var(--line-soft);
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
}
.rnd-budget label { font-size: 12px; color: var(--text-2); }
.rnd-budget b { font-family: var(--mono); color: var(--warning); }
.rnd-budget input { flex: 1; min-width: 140px; accent-color: var(--accent); }
.rnd-budget .hint { font-size: 11px; color: var(--text-3); }
.tree-wrap { overflow: auto; padding: 14px 16px 20px; }
.tree { position: relative; min-width: 900px; height: 780px; }
.tnode {
  position: absolute; width: 152px; background: var(--surface-2);
  border: 1px solid var(--line); border-radius: 8px; padding: 8px 9px; text-align: left;
  transition: border-color .12s, background .12s;
}
.tnode:hover { border-color: var(--text-3); }
.tnode.avail { border-color: var(--accent); }
.tnode.done { background: rgba(12,163,12,.11); border-color: var(--good); }
.tnode.locked { opacity: .45; }
.tnode .tn-name { font-size: 11.5px; font-weight: 600; line-height: 1.25; margin-bottom: 3px; }
.tnode .tn-cost { font: 10.5px var(--mono); color: var(--warning); }
.tnode .tn-branch { height: 3px; border-radius: 2px; margin-bottom: 6px; }
.tnode.done .tn-cost { color: var(--good); }
svg.tree-links { position: absolute; inset: 0; pointer-events: none; overflow: visible; }

/* learn */
.learn-wrap { display: flex; min-height: 0; flex: 1; overflow: hidden; }
.learn-nav {
  width: 232px; flex: none; border-right: 1px solid var(--line);
  overflow-y: auto; padding: 8px;
}
.learn-cat { font: 600 9.5px var(--sans); letter-spacing: .12em; color: var(--text-3);
  text-transform: uppercase; padding: 10px 8px 4px; }
.learn-link {
  display: block; width: 100%; text-align: left; background: none; border: 0;
  border-radius: 5px; padding: 5px 8px; font-size: 12px; color: var(--text-2);
}
.learn-link:hover { background: var(--surface-2); color: var(--text-1); }
.learn-link.on { background: rgba(57,135,229,.18); color: #fff; }
.learn-body { flex: 1; overflow-y: auto; padding: 18px 24px 30px; }
.learn-body h3 { margin: 0 0 4px; font-size: 20px; }
.learn-body .lb-cat {
  font: 600 9.5px var(--sans); letter-spacing: .12em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 14px;
}
.learn-body p { margin: 0 0 13px; color: var(--text-2); font-size: 13.5px; line-height: 1.62; max-width: 66ch; }
.learn-body strong { color: var(--text-1); }
.learn-see { margin-top: 20px; padding-top: 14px; border-top: 1px solid var(--line-soft); }
.learn-see button {
  background: var(--surface-2); border: 1px solid var(--line); border-radius: 20px;
  padding: 4px 12px; font-size: 11.5px; margin: 0 5px 5px 0; color: var(--text-2);
}
.learn-see button:hover { border-color: var(--accent); color: #fff; }

/* policies */
.pol {
  display: flex; gap: 12px; align-items: flex-start; padding: 11px 0;
  border-bottom: 1px solid var(--line-soft);
}
.pol .p-main { flex: 1; }
.pol h4 { margin: 0 0 3px; font-size: 13px; }
.pol p { margin: 0 0 4px; font-size: 11.5px; color: var(--text-3); }
.pol .p-eff { font-size: 11.5px; color: var(--accent); }

/* audit */
.viol { display: flex; gap: 10px; padding: 8px 0; border-bottom: 1px solid var(--line-soft); font-size: 12px; }
.viol .v-sev { width: 8px; height: 8px; border-radius: 4px; margin-top: 5px; flex: none; }
.audit-sum { display: flex; gap: 14px; margin-bottom: 12px; }

/* tooltip */
#tooltip {
  position: fixed; z-index: 300; max-width: 268px; pointer-events: none;
  background: rgba(8,12,16,.97); border: 1px solid var(--line); border-radius: 7px;
  padding: 8px 10px; font-size: 11.5px; line-height: 1.5;
  box-shadow: 0 8px 24px rgba(0,0,0,.5);
}
#tooltip h5 { margin: 0 0 3px; font-size: 12px; }
#tooltip p { margin: 0; color: var(--text-2); }
#tooltip .tt-more { color: var(--accent); font-size: 10.5px; margin-top: 5px; display: block; }

.menu-list { display: grid; gap: 7px; }
.gfx-row { display: flex; align-items: center; gap: 10px; }
.gfx-row label { font-size: 12px; color: var(--text-2); flex: none; }
.gfx-buttons { display: flex; gap: 3px; flex: 1; }
.gfx-buttons button {
  flex: 1; background: var(--surface-2); border: 1px solid var(--line);
  border-radius: 5px; padding: 5px; font-size: 11.5px; color: var(--text-3);
}
.gfx-buttons button.on { background: var(--accent); border-color: var(--accent); color: #fff; }
.gfx-note { font-size: 11px; color: var(--text-3); margin: -2px 0 4px; }
.menu-about { margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--line-soft); }
.menu-about p { font-size: 11.5px; color: var(--text-3); margin: 0 0 8px; }

.over-goal { display: flex; gap: 8px; padding: 4px 0; font-size: 12.5px; }

/* ============ RESPONSIVE ============ */
@media (max-width: 1100px) {
  .tb-metrics .metric:nth-child(n+6) { display: none; }
  #alerts { width: min(440px, calc(100% - 300px)); }
}
@media (max-width: 820px) {
  :root { --dash-h: 190px; }
  #buildbar { width: 178px; }
  #inspector { width: 236px; }
  .tb-metrics .metric:nth-child(n+4) { display: none; }
  #objectives { display: none; }
  .learn-nav { width: 160px; }
  #alerts { width: calc(100% - 440px); }
}
@media (max-width: 620px) {
  .tb-metrics { display: none; }
  #buildbar { max-height: 40%; }
  .learn-wrap { flex-direction: column; }
  .learn-nav { width: 100%; max-height: 150px; border-right: 0; border-bottom: 1px solid var(--line); }
}