/* Deadfront Simulator — desk tool, denser than the field HUD but the same palette. */

:root {
  --bg: #07131c;
  --panel: #0b1a24;
  --panel-2: #10252f;
  --edge: rgba(41, 199, 255, 0.24);
  --ink: #f2fbff;
  --ink-dim: #9db9c7;
  --accent: #29c7ff;
  --good: #34d17b;
  --warn: #ffb82e;
  --bad: #ff5757;
  --violet: #a278ff;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.kicker { display: block; font-size: 11px; font-weight: 800; letter-spacing: 0.14em; color: var(--accent); margin-bottom: 5px; }
h1 { font-size: 22px; margin: 0; letter-spacing: -0.02em; }
h2 { font-size: 21px; margin: 0; letter-spacing: -0.01em; }
h3 { font-size: 17px; margin: 0 0 8px; }

.sim-top {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px; border-bottom: 1px solid var(--edge);
  position: sticky; top: 0; background: rgba(7, 19, 28, 0.9);
  backdrop-filter: blur(12px); z-index: 5;
}
.to-field { color: var(--accent); text-decoration: none; font-weight: 700; font-size: 14px; }

.sim-wrap { max-width: 1180px; margin: 0 auto; padding: 20px; }

/* ── Picker ────────────────────────────────────────────────────────────────── */

.picker-lede { color: var(--ink-dim); font-size: 14px; line-height: 1.55; max-width: 640px; margin: 4px 0 18px; }
.system-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 12px; }
.system-card {
  display: flex; flex-direction: column; gap: 6px; text-align: left;
  padding: 18px; border-radius: 15px; border: 1px solid var(--edge);
  background: var(--panel); color: var(--ink); font: inherit; cursor: pointer;
}
.system-card:hover { border-color: var(--accent); }
.system-card b { font-size: 17px; font-weight: 750; }
.system-card small { font-size: 13px; color: var(--ink-dim); line-height: 1.5; }
.system-card em { font-size: 11.5px; color: var(--accent); font-style: normal; letter-spacing: 0.03em; margin-top: 2px; }
.badge { align-self: flex-start; font-size: 10px; font-weight: 800; letter-spacing: 0.1em; padding: 3px 8px; border-radius: 6px; }
.badge.exercise { background: rgba(41, 199, 255, 0.18); color: var(--accent); }
.badge.twin { background: rgba(162, 120, 255, 0.2); color: var(--violet); }

/* ── Stage ─────────────────────────────────────────────────────────────────── */

.stage-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin-bottom: 18px; }
.stage-summary { color: var(--ink-dim); font-size: 13.5px; line-height: 1.5; margin: 6px 0 0; max-width: 620px; }

.stage-grid { display: grid; grid-template-columns: 1fr 360px; gap: 18px; align-items: start; }
@media (max-width: 900px) { .stage-grid { grid-template-columns: 1fr; } }

/* Render toolbar: 2D/3D toggle + Enter VR */
.render-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 14px; }
.mode-toggle { display: inline-flex; gap: 4px; padding: 4px; border-radius: 11px; background: var(--panel-2); border: 1px solid var(--edge); }
.mode-btn { font: inherit; font-size: 13px; font-weight: 700; padding: 8px 16px; border-radius: 8px; border: 0; background: transparent; color: var(--ink-dim); cursor: pointer; }
.mode-btn.active { background: var(--accent); color: #04202e; }
.enter-vr { font: inherit; font-size: 13px; font-weight: 700; padding: 9px 16px; border-radius: 10px; border: 1px solid rgba(162, 120, 255, 0.5); background: rgba(162, 120, 255, 0.18); color: #e0d4ff; cursor: pointer; }

/* Renderer host: the 2D renderer flows; the 3D renderer needs a sized canvas box */
.renderer-host.is-3d { height: 460px; border-radius: 15px; overflow: hidden; border: 1px solid var(--edge); background: #07131c; }
.renderer-host.is-3d canvas { display: block; width: 100%; height: 100%; touch-action: none; }
.renderer-fallback { padding: 40px 20px; text-align: center; color: var(--warn); font-size: 14px; }

/* Indicators */
.indicators { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; margin-bottom: 18px; }
.indicator {
  display: flex; flex-direction: column; gap: 5px;
  padding: 13px 15px; border-radius: 12px; background: var(--panel-2);
  border: 1px solid transparent; border-left-width: 4px;
}
.indicator span { font-size: 11px; font-weight: 700; letter-spacing: 0.08em; color: var(--ink-dim); text-transform: uppercase; }
.indicator strong { font-size: 19px; font-weight: 800; letter-spacing: -0.01em; }
.indicator.normal { border-left-color: #3a5563; }
.indicator.good { border-left-color: var(--good); }
.indicator.good strong { color: var(--good); }
.indicator.alarm { border-left-color: var(--warn); }
.indicator.alarm strong { color: var(--warn); }
.indicator.trip { border-left-color: var(--bad); }
.indicator.trip strong { color: var(--bad); }

/* Controls */
.control-groups { display: flex; flex-direction: column; gap: 14px; }
.control-group { }
.group-label { display: block; font-size: 11px; font-weight: 800; letter-spacing: 0.1em; color: var(--ink-dim); text-transform: uppercase; margin-bottom: 8px; }
.group-row { display: flex; flex-wrap: wrap; gap: 9px; }
.ctrl {
  font: inherit; font-size: 14px; font-weight: 700; padding: 12px 18px;
  border-radius: 11px; border: 1px solid var(--edge); background: rgba(41, 199, 255, 0.08);
  color: var(--ink); cursor: pointer; min-height: 46px;
}
.ctrl:hover:not(:disabled) { border-color: var(--accent); }
.ctrl.danger { border-color: rgba(255, 87, 87, 0.4); background: rgba(255, 87, 87, 0.1); color: #ffb4b4; }
.ctrl:disabled { opacity: 0.36; cursor: not-allowed; }

/* ── Rail ──────────────────────────────────────────────────────────────────── */

.stage-rail { background: var(--panel); border: 1px solid var(--edge); border-radius: 16px; padding: 15px; }
.rail-tabs { display: flex; gap: 5px; margin-bottom: 13px; }
.rail-tab {
  flex: 1; font: inherit; font-size: 12px; font-weight: 700; padding: 9px 6px;
  border-radius: 9px; border: 1px solid transparent; background: transparent;
  color: var(--ink-dim); cursor: pointer;
}
.rail-tab.active { background: rgba(41, 199, 255, 0.12); color: var(--accent); border-color: var(--edge); }
.rail-panel { min-height: 220px; }

.rail-select {
  width: 100%; font: inherit; font-size: 14px; padding: 11px; border-radius: 10px;
  background: var(--panel-2); color: var(--ink); border: 1px solid var(--edge); margin-bottom: 12px;
}
.rail-select:disabled { opacity: 0.5; }

/* Exercise */
.exercise-brief { font-size: 14px; line-height: 1.55; margin: 0 0 10px; }
.exercise-hint { font-size: 12.5px; line-height: 1.5; color: var(--warn); margin: 0 0 12px; }
.exercise-status {
  padding: 12px; border-radius: 11px; font-weight: 800; font-size: 14px; text-align: center;
  background: var(--panel-2); color: var(--ink-dim); border: 1px solid transparent; margin-bottom: 12px;
}
.exercise-status.done { background: rgba(52, 209, 123, 0.16); color: var(--good); border-color: rgba(52, 209, 123, 0.5); }
.exercise-status.failed { background: rgba(255, 87, 87, 0.14); color: var(--bad); border-color: rgba(255, 87, 87, 0.4); }

/* Procedure practice */
.proc-progress { text-align: right; margin-bottom: 4px; }
.proc-progress b { font-size: 22px; font-weight: 800; color: var(--accent); }
.proc-progress span { font-size: 12px; color: var(--ink-dim); }
.proc-say { font-size: 14px; line-height: 1.5; color: var(--ink-dim); margin: 0 0 12px; }
.proc-gate { padding: 12px; border-radius: 11px; border: 1px solid rgba(255, 184, 46, 0.4); background: rgba(255, 184, 46, 0.09); margin-bottom: 12px; }
.proc-gate.satisfied { border-color: rgba(52, 209, 123, 0.5); background: rgba(52, 209, 123, 0.1); }
.proc-gate-prompt { font-size: 13.5px; font-weight: 700; margin: 0 0 9px; color: var(--warn); line-height: 1.4; }
.proc-gate.satisfied .proc-gate-prompt { color: var(--good); }
.proc-gate-proven { font-size: 13px; font-weight: 800; color: var(--good); margin: 0 0 6px; }
.proc-controls { display: flex; gap: 8px; margin-bottom: 10px; }
.proc-note { font-size: 11.5px; line-height: 1.5; color: var(--ink-dim); margin: 0; }

/* Log */
.event-log { list-style: none; margin: 0; padding: 0; max-height: 320px; overflow-y: auto; display: flex; flex-direction: column; gap: 6px; }
.event-log li { font-size: 12.5px; line-height: 1.4; color: var(--ink-dim); padding: 8px 10px; border-radius: 8px; background: var(--panel-2); font-family: ui-monospace, "SF Mono", Menlo, monospace; }

/* Shared small buttons */
.ghost { border: 1px solid var(--edge); background: rgba(255, 255, 255, 0.05); color: var(--ink); font: inherit; font-weight: 700; border-radius: 10px; cursor: pointer; }
.ghost.small, .primary.small { font-size: 12.5px; padding: 9px 14px; }
.primary { border: 0; background: var(--accent); color: #04202e; font: inherit; font-weight: 750; border-radius: 10px; cursor: pointer; }
.primary:disabled { opacity: 0.4; cursor: not-allowed; }
.proc-controls .ghost, .proc-controls .primary { flex: 1; }

.reset-system { width: 100%; margin-top: 14px; font: inherit; font-size: 13px; font-weight: 700; padding: 12px; border-radius: 10px; border: 1px solid var(--edge); background: rgba(255, 255, 255, 0.05); color: var(--ink); cursor: pointer; }

.legal { font-size: 11px; line-height: 1.5; color: rgba(157, 185, 199, 0.7); text-align: center; margin: 28px auto 0; max-width: 620px; }

@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }