/* Shared component layer, loaded last on every page.
   It sets one visual language (controls, surfaces, type, data tables) over each page's layout rules.
   Colors come only from theme.css tokens. */

/* ------------------------------------------------------------------ type */
:root { font-family: var(--font-sans); font-size: 14px; }

body { line-height: 1.55; letter-spacing: .005em; }

h1, h2, h3, h4 { color: var(--ink); letter-spacing: -.01em; }

h2 { font-size: 16px; font-weight: 650; }

main { padding-top: 24px; }

main > section, main > div, main > nav { scroll-margin-top: 72px; }

.eyebrow, .intro-kicker {
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--faint);
}

code, .mono { font-family: var(--font-mono); font-size: .92em; }

a { color: inherit; }

/* ------------------------------------------------------------------ controls */
button, select, input[type="number"], input[type="text"], a.button, .bar-link {
  font: inherit;
  font-size: 13px;
  min-height: 32px;
  border-radius: 7px;
  transition: background-color .15s var(--ease), border-color .15s var(--ease), color .15s var(--ease), box-shadow .15s var(--ease);
}

button, a.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 0 12px;
  font-weight: 560;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line-strong);
  box-shadow: 0 1px 0 color-mix(in srgb, var(--shadow) 4%, transparent);
  cursor: pointer;
}

button:hover:not(:disabled), a.button:hover {
  background: var(--surface-3);
  border-color: var(--line-strong);
  text-decoration: none;
}

button:active:not(:disabled) { transform: translateY(.5px); }

button.primary, a.button.primary {
  color: var(--on-ink);
  background: var(--ink);
  border-color: var(--ink);
  box-shadow: 0 1px 2px color-mix(in srgb, var(--shadow) 20%, transparent);
}

button.primary:hover:not(:disabled) {
  background: color-mix(in srgb, var(--ink) 86%, var(--bg));
  border-color: color-mix(in srgb, var(--ink) 86%, var(--bg));
}

button.quiet { background: transparent; box-shadow: none; }

button:disabled { opacity: .45; cursor: not-allowed; }

button.text-link, a.text-link {
  min-height: 0;
  padding: 0;
  border: 0;
  background: none;
  box-shadow: none;
  color: var(--blue-fg);
  font-weight: 550;
}

button.text-link:hover:not(:disabled) { background: none; text-decoration: underline; }

select, input[type="number"], input[type="text"] {
  padding: 0 10px;
  color: var(--ink);
  background-color: var(--surface);
  border: 1px solid var(--line-strong);
}

select {
  appearance: none;
  -webkit-appearance: none;
  padding-right: 30px;
  background-image:
    linear-gradient(45deg, transparent 50%, var(--muted) 50%),
    linear-gradient(135deg, var(--muted) 50%, transparent 50%);
  background-position: calc(100% - 15px) 50%, calc(100% - 10px) 50%;
  background-size: 5px 5px;
  background-repeat: no-repeat;
}

select:hover, input[type="number"]:hover, input[type="text"]:hover { border-color: var(--faint); }

input[type="range"] { accent-color: var(--ink); }

.bar-link {
  display: inline-flex;
  align-items: center;
  padding: 0 10px;
  color: var(--muted);
  font-weight: 550;
  text-decoration: none;
  border: 1px solid transparent;
}

.bar-link:hover { color: var(--ink); background: var(--surface-3); text-decoration: none; }

/* Segmented controls (tabs, mode and track switches) share one look. */
.mode-switch, .track-toggle, .chart-tabs, [role="tablist"] {
  display: inline-flex;
  gap: 2px;
  padding: 3px;
  border: 0;
  border-radius: 9px;
  background: var(--surface-3);
}

.mode-switch button, .track-toggle button, .chart-tabs button, [role="tablist"] > button {
  min-height: 28px;
  padding: 0 12px;
  border: 0;
  border-radius: 7px;
  background: transparent;
  color: var(--muted);
  box-shadow: none;
  font-weight: 560;
}

.mode-switch button:hover:not(:disabled), .track-toggle button:hover:not(:disabled),
.chart-tabs button:hover:not(:disabled), [role="tablist"] > button:hover:not(:disabled) {
  background: transparent;
  color: var(--ink);
}

.mode-switch button[aria-selected="true"], .track-toggle button[aria-pressed="true"], .track-toggle button.active,
.chart-tabs button[aria-selected="true"], [role="tablist"] > button[aria-selected="true"] {
  background: var(--surface);
  color: var(--ink);
  box-shadow: var(--elev-1);
}

/* ------------------------------------------------------------------ surfaces */
.panel, .scene-panel, .controls-panel, .trajectory-panel, .timeline-panel, .system, .settlement, .comparison,
.trace-section, .history-section, .experiment-settings, .jev-workshop, .run-bar, .protocol {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--elev-1);
}

.section-heading { align-items: flex-end; }

.section-heading h2 { font-size: 16px; }

.section-heading > p { color: var(--muted); font-size: 12.5px; line-height: 1.55; }

.error-banner {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--red-fg);
  background: var(--red-soft);
  border: 1px solid var(--red-line);
  border-radius: 10px;
}

.warning { color: var(--orange-fg); }

details > summary { cursor: pointer; }

/* ------------------------------------------------------------------ data tables */
table { border-collapse: collapse; font-variant-numeric: tabular-nums; }

th {
  color: var(--faint);
  font-weight: 600;
  font-size: 11.5px;
  letter-spacing: .02em;
}

td, th { border-color: var(--line); }

tbody tr:hover td { background: color-mix(in srgb, var(--surface-3) 60%, transparent); }

/* ------------------------------------------------------------------ footer */
main > footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 24px;
  margin-top: 28px;
  padding: 18px 0 8px;
  border-top: 1px solid var(--line);
  color: var(--faint);
  font-size: 12px;
  line-height: 1.6;
}

main > footer p { margin: 0; max-width: 980px; color: var(--faint); }

/* ------------------------------------------------------------------ logo */
.logo .logo-tile { fill: var(--ink); }
.logo .logo-bus { stroke: var(--bg); stroke-width: 2; stroke-linecap: round; fill: none; }
.logo .logo-feed { stroke: var(--bg); stroke-width: 1.5; stroke-linecap: round; fill: none; opacity: .7; }
.logo .logo-pv { fill: var(--amber-mid); }
.logo .logo-bess { fill: var(--teal-mid); }
.logo .logo-load { fill: var(--violet-mid); }

/* ------------------------------------------------------------------ immersive stages
   Energy scenes sit on a deep, gridded field; in dark mode, flow marks glow. */
.mg-topology, .scene-container, .world-scene-wrap, #triad-visual .energy-scene {
  background-color: var(--surface-2);
  background-image:
    linear-gradient(var(--stage-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--stage-grid) 1px, transparent 1px),
    var(--stage);
  background-size: 24px 24px, 24px 24px, auto;
  background-position: -1px -1px, -1px -1px, 0 0;
  border: 1px solid var(--line);
  border-radius: 10px;
}

:root[data-theme="dark"] .mg-topology svg [class*="flow"], :root[data-theme="dark"] .scene-container svg [class*="flow"],
:root[data-theme="dark"] .world-scene-wrap svg [class*="flow"], :root[data-theme="dark"] #triad-visual svg [class*="flow"] {
  filter: drop-shadow(0 0 3px currentColor);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .mg-topology svg [class*="flow"], :root:not([data-theme="light"]) .scene-container svg [class*="flow"],
  :root:not([data-theme="light"]) .world-scene-wrap svg [class*="flow"], :root:not([data-theme="light"]) #triad-visual svg [class*="flow"] {
    filter: drop-shadow(0 0 3px currentColor);
  }
}

/* Live status dot pulses while the world advances. */
@keyframes gt-pulse { 0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--green-mid) 55%, transparent); } 100% { box-shadow: 0 0 0 8px transparent; } }

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .001ms !important; animation-iteration-count: 1 !important; }
}

/* ------------------------------------------------------------------ page header, unified across pages */
main .page-head { margin-bottom: 20px; align-items: flex-end; }

main .page-head h1 {
  margin: 0;
  font-size: 26px;
  line-height: 1.25;
  font-weight: 680;
  letter-spacing: -.02em;
}

main .page-head .crumb { margin: 0 0 6px; font-size: 12px; color: var(--faint); }

main .page-head .crumb .intro-kicker { margin: 0; font-size: inherit; letter-spacing: 0; color: inherit; font-weight: inherit; }

main .page-head .lede, main .page-head p.lede:not(.eyebrow) {
  margin: 8px 0 0;
  max-width: 780px;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--muted);
}

/* Sections that became cards get inner breathing room. */
.comparison, .trace-section, .history-section, .experiment-settings { padding: 20px; }

/* Main page control bar: a toolbar surface, not a gray slab. */
.mg-controls { background: var(--surface); box-shadow: var(--elev-1); }

/* Status dot for running states pulses. */
.status-dot.running, .status-dot.live, .status-dot[data-state="running"] { animation: gt-pulse 1.6s ease-out infinite; }

/* ------------------------------------------------------------------ fixes from the phone/tablet audit */
/* Nav yields width (and scrolls) before the tools do; tools never get squeezed. */
.app-nav { min-width: 0; flex: 0 1 auto; }
.app-bar .bar-tools { flex: none; }

/* Touch screens: every control is at least ~36px tall so a finger can hit and drag it. */
@media (pointer: coarse) {
  .theme-switch button { width: 36px; height: 34px; }
  .app-bar .brand { min-height: 40px; }
  .bar-link { min-height: 36px; }
  input[type="range"] { min-height: 32px; }
  button.text-link, a.text-link { display: inline-flex; align-items: center; min-height: 36px; padding: 0 4px; }
}

/* Phones: section headings stack, explanations read left to right. */
@media (max-width: 760px) {
  .section-heading { flex-direction: column; align-items: flex-start; gap: 6px; }
  .section-heading > p { text-align: left; max-width: none; }
  main .page-head { flex-direction: column; align-items: stretch; }
  main .page-head > :last-child { text-align: left; align-items: flex-start; }
}