frontend/src/App.css

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ── Design Tokens ── */
:root {
  --bg:    #f5f2ed;
  --s1:    #ffffff;
  --s2:    #faf9f6;
  --s3:    #f0ede8;
  --bd:    #e4dfd7;
  --bd2:   #cdc7be;
  --t1:    #1c1712;
  --t2:    #6b6460;
  --t3:    #a8a29e;
  --fire:  #c2410c;
  --fire2: rgba(194,65,12,0.08);
  --blue:  #1d4ed8;
  --blue2: rgba(29,78,216,0.08);
  --green: #166534;
  --green2:rgba(22,101,52,0.08);
  --amber: #92400e;
  --amber2:rgba(146,64,14,0.08);
  --red:   #b91c1c;
  --red2:  rgba(185,28,28,0.08);
  --gold:  #d97706;
  --gold2: rgba(217,119,6,0.12);
  --mono: 'DM Mono', 'JetBrains Mono', monospace;
  --sans: 'DM Sans', 'Inter', system-ui, sans-serif;
  --r: 8px;
}

body {
  background: var(--bg);
  color: var(--t1);
  font-family: var(--sans);
  font-size: 13px;
  line-height: 1.5;
  overflow: hidden;
}

/* ── Shell ── */
.shell {
  display: grid;
  grid-template-rows: 48px 1fr;
  height: 100vh;
  overflow: hidden;
}

/* ── Topbar ── */
.topbar {
  background: var(--s1);
  border-bottom: 1px solid var(--bd);
  display: flex;
  align-items: center;
  padding: 0 20px;
  gap: 16px;
  z-index: 20;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-icon {
  width: 28px;
  height: 28px;
  background: linear-gradient(135deg, #c2410c, #f97316);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
}

.brand-name {
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 500;
  color: var(--t1);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.brand-sep {
  color: var(--bd2);
  margin: 0 2px;
}

.brand-sub {
  font-size: 11px;
  color: var(--t3);
  letter-spacing: 0.08em;
  font-family: var(--mono);
}

.topbar-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 12px;
}

.live-chip {
  display: flex;
  align-items: center;
  gap: 5px;
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 20px;
  border: 1px solid var(--bd);
  color: var(--t3);
  background: var(--s2);
}

.live-chip::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--bd2);
}

.live-chip.online {
  color: var(--green);
  background: var(--green2);
  border-color: rgba(22,101,52,0.2);
}

.live-chip.online::before { background: #22c55e; animation: blink 1.2s infinite; }

.live-chip.offline {
  color: var(--t3);
  background: var(--s2);
}

.live-chip.error {
  color: var(--red);
  background: var(--red2);
  border-color: rgba(185,28,28,0.2);
}

.live-chip.error::before { background: var(--red); }

@keyframes blink { 0%,100% { opacity:1 } 50% { opacity:0.3 } }

.topbar-ep {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--t3);
  display: flex;
  align-items: center;
  gap: 6px;
}

.topbar-ep .ep-id {
  color: var(--blue);
  font-weight: 500;
}

/* ── Content Layout ── */
.content {
  display: grid;
  grid-template-columns: 1fr 300px;
  overflow: hidden;
  height: 100%;
}

/* ── Canvas Zone (left) ── */
.canvas-zone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding: 20px;
  overflow-y: auto;
  gap: 16px;
  background: var(--bg);
}

.canvas-frame {
  position: relative;
  border-radius: 10px;
  overflow: hidden;
  box-shadow:
    0 0 0 1px var(--bd2),
    0 4px 24px rgba(0,0,0,0.10),
    0 1px 4px rgba(0,0,0,0.06);
  background: #d4c9a8;
  line-height: 0;
  flex-shrink: 0;
}

#map-canvas {
  display: block;
  max-width: 100%;
  max-height: calc(100vh - 48px - 120px);
  image-rendering: pixelated;
}

/* ── HUD Overlays on Canvas ── */
.hud-overlay {
  position: absolute;
  top: 0; left: 0; right: 0;
  display: flex;
  justify-content: space-between;
  pointer-events: none;
  z-index: 10;
  padding: 10px;
  gap: 8px;
}

.hud-card {
  background: rgba(12, 8, 5, 0.82);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: 6px;
  padding: 7px 10px;
  color: #ede6dc;
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 130px;
}

.hud-card-center {
  min-width: 160px;
  border-color: rgba(251,191,36,0.18);
}

.hud-r {
  display: flex;
  align-items: center;
  gap: 6px;
}

.hlbl {
  font-family: var(--mono);
  font-size: 9px;
  color: rgba(168,162,158,0.7);
  letter-spacing: 0.10em;
  text-transform: uppercase;
  flex-shrink: 0;
}

.hval {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 500;
  color: #f0e8e0;
  margin-left: auto;
  min-width: 26px;
  text-align: right;
}

.hbar-bg {
  flex: 1;
  height: 5px;
  background: rgba(255,255,255,0.10);
  border-radius: 3px;
  overflow: hidden;
}

.hbar-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.35s ease;
}

.hbar-fill.g { background: linear-gradient(90deg, #22c55e, #4ade80); }
.hbar-fill.m { background: linear-gradient(90deg, #f59e0b, #fbbf24); }
.hbar-fill.c { background: linear-gradient(90deg, #ef4444, #f87171); }

.hstatus {
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 2px 6px;
  border-radius: 3px;
}

.hstatus.good     { color: #4ade80; background: rgba(74,222,128,0.12); }
.hstatus.moderate { color: #fbbf24; background: rgba(251,191,36,0.12); }
.hstatus.low      { color: #fb923c; background: rgba(251,146,60,0.12); }
.hstatus.critical { color: #f87171; background: rgba(248,113,113,0.12); animation: pulse-red 1s infinite; }

@keyframes pulse-red { 0%,100%{opacity:1} 50%{opacity:0.5} }

.step-val {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  color: #f0e8e0;
}

.sbar-bg {
  height: 3px;
  background: rgba(255,255,255,0.10);
  border-radius: 2px;
  overflow: hidden;
  width: 100%;
  margin-top: 1px;
}

.sbar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--blue), #60a5fa);
  border-radius: 2px;
  transition: width 0.35s ease;
}

.step-meta {
  font-family: var(--mono);
  font-size: 8px;
  color: rgba(168,162,158,0.55);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-top: 1px;
}

/* ── Legend below canvas ── */
.legend {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  align-items: center;
  padding: 8px 12px;
  background: var(--s1);
  border: 1px solid var(--bd);
  border-radius: 6px;
  width: 100%;
  max-width: 640px;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 5px;
  font-family: var(--mono);
  font-size: 9px;
  color: var(--t2);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.leg-swatch {
  width: 12px;
  height: 12px;
  border-radius: 2px;
  flex-shrink: 0;
}

/* ── Dialog / Field Report ── */
.dialog {
  background: var(--s1);
  border: 1px solid var(--bd);
  border-left: 3px solid var(--fire);
  border-radius: var(--r);
  padding: 10px 14px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--t2);
  width: 100%;
  max-width: 640px;
  line-height: 1.5;
}

.dialog-who {
  font-size: 9px;
  color: var(--t3);
  text-transform: uppercase;
  letter-spacing: 0.10em;
  display: block;
  margin-bottom: 3px;
}

/* ── Side Panel (right) ── */
.side {
  background: var(--s1);
  border-left: 1px solid var(--bd);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  overflow-x: hidden;
}

.side-sec {
  border-bottom: 1px solid var(--bd);
  padding: 14px 16px;
}

.sec-hd {
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 600;
  color: var(--t3);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* ── Stat Grid (2×N) ── */
.sg {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}

.sc {
  background: var(--s2);
  border: 1px solid var(--bd);
  border-radius: 6px;
  padding: 8px 10px;
}

.sc-l {
  font-family: var(--mono);
  font-size: 9px;
  color: var(--t3);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 2px;
}

.sc-v {
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 500;
  color: var(--t1);
}

.sc-v.fire  { color: var(--fire); }
.sc-v.blue  { color: var(--blue); }
.sc-v.green { color: var(--green); }
.sc-v.amber { color: var(--amber); }
.sc-v.gold  { color: var(--gold); }

/* ── Status Rows ── */
.srow {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 5px 0;
  font-size: 12px;
  border-bottom: 1px solid rgba(0,0,0,0.03);
}

.srow:last-child { border-bottom: none; }

.sv { font-family: var(--mono); font-weight: 500; }
.sv.blue  { color: var(--blue); }
.sv.green { color: var(--green); }
.sv.hot   { color: var(--fire); }
.sv.danger{ color: var(--red); }
.sv.warn  { color: var(--amber); }
.sv.gold  { color: var(--gold); }

/* ── Health bar in side panel ── */
.bar-w { margin-top: 10px; }

.bar-lbl {
  font-family: var(--mono);
  font-size: 9px;
  color: var(--t3);
  display: flex;
  justify-content: space-between;
  margin-bottom: 5px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.bar-bg {
  background: var(--s2);
  border: 1px solid var(--bd);
  border-radius: 4px;
  height: 6px;
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border-radius: 4px;
}

/* ── Event Log ── */
.elog {
  display: flex;
  flex-direction: column;
  gap: 2px;
  max-height: 160px;
  overflow-y: auto;
}

.erow {
  display: flex;
  align-items: flex-start;
  gap: 6px;
  padding: 4px 6px;
  border-radius: 4px;
  font-size: 11px;
  background: transparent;
}

.erow.alarm {
  background: var(--red2);
  border-left: 2px solid var(--red);
}

.erow.warn-row {
  background: var(--amber2);
  border-left: 2px solid var(--amber);
}

.estep {
  font-family: var(--mono);
  font-size: 9px;
  color: var(--t3);
  min-width: 26px;
  padding-top: 1px;
  flex-shrink: 0;
}

.etext {
  color: var(--t2);
  line-height: 1.4;
  flex: 1;
  font-size: 11px;
}

.erwd {
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 500;
  flex-shrink: 0;
  padding-top: 1px;
}

.erwd.p { color: var(--green); }
.erwd.n { color: var(--red); }

/* ── Direction Pad ── */
.dpad {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 5px;
  max-width: 140px;
  margin: 0 auto;
}

.dpad-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ── Control Buttons ── */
.ctrl-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 5px;
}

.ctrl-row {
  display: flex;
  gap: 5px;
  margin-top: 8px;
}

.ctrl-btn {
  background: var(--s2);
  color: var(--t2);
  border: 1px solid var(--bd);
  border-radius: 5px;
  padding: 7px 6px;
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: all 0.1s;
  text-align: center;
  flex: 1;
}

.ctrl-btn:hover:not(:disabled) {
  background: var(--s3);
  color: var(--t1);
  border-color: var(--bd2);
}

.ctrl-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.ctrl-btn.accent {
  background: var(--fire2);
  color: var(--fire);
  border-color: rgba(194,65,12,0.25);
}

.ctrl-btn.accent:hover {
  background: rgba(194,65,12,0.15);
  color: var(--fire);
}

.ctrl-btn.active {
  background: var(--blue2);
  color: var(--blue);
  border-color: rgba(29,78,216,0.25);
}

.ctrl-btn.active:hover {
  background: rgba(29,78,216,0.15);
}

.ctrl-btn.play {
  background: linear-gradient(135deg, #c2410c, #f97316);
  color: white;
  border: none;
  font-size: 11px;
  box-shadow: 0 2px 8px rgba(194,65,12,0.30);
}

.ctrl-btn.play:hover {
  box-shadow: 0 3px 12px rgba(194,65,12,0.45);
  filter: brightness(1.05);
}

.ctrl-status {
  margin-top: 10px;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--t3);
  padding: 7px 10px;
  background: var(--s2);
  border-radius: 5px;
  border: 1px solid var(--bd);
  border-left: 3px solid var(--bd2);
}

.ctrl-status.error {
  color: var(--red);
  background: var(--red2);
  border-left-color: var(--red);
}

/* ── Door List ── */
.door-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
}

.door-btn {
  background: var(--s2);
  border: 1px solid var(--bd);
  border-radius: 5px;
  padding: 5px 4px;
  font-family: var(--mono);
  font-size: 9px;
  cursor: pointer;
  color: var(--t2);
  text-align: center;
  transition: all 0.1s;
}

.door-btn:hover { background: var(--s3); color: var(--t1); }
.door-btn.open { color: var(--green); border-color: rgba(22,101,52,0.25); background: var(--green2); }
.door-btn.closed { color: var(--amber); border-color: rgba(146,64,14,0.25); background: var(--amber2); }
.door-btn.failed { color: var(--red); border-color: rgba(185,28,28,0.25); background: var(--red2); }

/* ── API Report ── */
.report-box {
  background: var(--s2);
  border: 1px solid var(--bd);
  border-radius: 5px;
  padding: 10px;
  max-height: 160px;
  overflow-y: auto;
  font-family: var(--mono);
  font-size: 9px;
  color: var(--t2);
  white-space: pre-wrap;
  line-height: 1.5;
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 4px; height: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--bd2); border-radius: 2px; }