:root {
  color-scheme: light;
  --paper: #e9e7df;
  --ink: #141512;
  --muted: #6d6d65;
  --line: #b9b8b0;
  --signal: #d8ff3e;
  --panel: rgba(255, 255, 255, 0.16);
}

* { box-sizing: border-box; }

body {
  min-height: 100vh;
  margin: 0;
  background:
    linear-gradient(rgba(20, 21, 18, .035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(20, 21, 18, .035) 1px, transparent 1px),
    var(--paper);
  background-size: 24px 24px;
  color: var(--ink);
  font-family: "Manrope", sans-serif;
}

button, input, select { font: inherit; }

.lights-board { width: min(1180px, calc(100% - 32px)); min-height: 100vh; margin: 0 auto; padding: 22px 0 18px; }
.lights-topbar { min-height: 76px; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 20px; border-top: 2px solid var(--ink); border-bottom: 1px solid var(--ink); }
.lights-topbar > div:nth-child(2) { text-align: center; }
.kicker { margin: 0 0 2px; color: var(--muted); font: 500 9px "DM Mono", monospace; letter-spacing: .1em; }
.lights-topbar h1 { margin: 0; font-size: 27px; line-height: 1; letter-spacing: -.045em; }
.back-link { color: var(--ink); font: 500 10px "DM Mono", monospace; text-decoration: none; }
.back-link:hover, .back-link:focus-visible { text-decoration: underline; outline: 0; }
.save-state { justify-self: end; padding: 6px 8px; border: 1px solid var(--ink); font: 500 8px "DM Mono", monospace; }
.save-state.changed { background: var(--signal); }

.setup-note { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 18px; margin: 12px 0; padding: 11px 13px; border: 1px solid var(--ink); background: var(--panel); }
.setup-note strong { font: 500 10px "DM Mono", monospace; white-space: nowrap; }
.setup-note span { color: var(--muted); font-size: 11px; }
.setup-note button { padding: 5px 9px; border: 1px solid var(--ink); background: transparent; color: var(--ink); cursor: pointer; font: 500 8px "DM Mono", monospace; }
.setup-note button:hover, .setup-note button:focus-visible { background: var(--signal); outline: 0; }

.groups-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.group-panel { min-width: 0; min-height: 290px; padding: 12px; border: 1px solid var(--ink); background: var(--panel); }
.group-panel.unassigned { grid-column: 1 / -1; min-height: 0; }
.group-heading { display: grid; grid-template-columns: 35px minmax(0, 1fr) auto; align-items: center; gap: 8px; padding-bottom: 10px; border-bottom: 1px solid var(--line); }
.group-index { font: 500 11px "DM Mono", monospace; }
.group-name { min-width: 0; padding: 4px 2px; border: 0; border-bottom: 1px solid transparent; background: transparent; color: var(--ink); font-size: 17px; font-weight: 700; }
.group-name:focus { border-bottom-color: var(--ink); outline: 0; }
.group-count { padding: 4px 6px; border: 1px solid var(--ink); font: 500 8px "DM Mono", monospace; }
.group-count.full { background: var(--signal); }
.lamp-list { display: grid; gap: 7px; padding-top: 9px; }
.unassigned .lamp-list { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.group-empty { margin: 28px 0; color: var(--muted); font: 500 9px "DM Mono", monospace; text-align: center; }

.group-controls { grid-column: 1 / -1; display: grid; grid-template-columns: 1fr 1fr; gap: 5px; }
.group-controls button { padding: 5px; border: 1px solid var(--ink); background: transparent; font: 500 7px "DM Mono", monospace; cursor: pointer; }
.group-controls button:hover, .group-controls button:focus-visible { background: var(--signal); outline: 0; }
.group-controls button:disabled { color: var(--line); cursor: default; }

.lamp-card { min-width: 0; display: grid; grid-template-columns: 25px minmax(0, 1fr) 92px 26px; align-items: center; gap: 7px; padding: 8px; border: 1px solid var(--line); background: rgba(255, 255, 255, .22); }
.lamp-number { width: 23px; height: 23px; display: grid; place-items: center; border: 1px solid var(--ink); font: 500 8px "DM Mono", monospace; }
.lamp-copy { min-width: 0; }
.lamp-copy label span, .group-picker span { display: block; margin-bottom: 2px; color: var(--muted); font: 500 6px "DM Mono", monospace; letter-spacing: .06em; }
.lamp-name { width: 100%; min-width: 0; padding: 2px 0; border: 0; border-bottom: 1px solid transparent; background: transparent; color: var(--ink); font-size: 11px; font-weight: 700; }
.lamp-name:focus { border-bottom-color: var(--ink); outline: 0; }
.lamp-address { display: block; overflow: hidden; margin-top: 2px; color: var(--muted); font: 400 7px "DM Mono", monospace; white-space: nowrap; text-overflow: ellipsis; }
.group-picker select { width: 100%; padding: 5px 4px; border: 1px solid var(--ink); border-radius: 0; background: var(--paper); color: var(--ink); font: 500 7px "DM Mono", monospace; }
.order-controls { display: grid; gap: 2px; }
.order-controls button { width: 24px; height: 22px; padding: 0; border: 1px solid var(--ink); background: transparent; color: var(--ink); cursor: pointer; font: 500 11px "DM Mono", monospace; }
.order-controls button:hover, .order-controls button:focus-visible { background: var(--signal); outline: 0; }
.order-controls button:disabled { color: var(--line); cursor: default; }
.order-controls button:disabled:hover { background: transparent; }
.lamp-controls { grid-column: 1 / -1; display: grid; grid-template-columns: 44px minmax(75px, 1fr); align-items: center; gap: 7px; padding-top: 6px; border-top: 1px solid var(--line); }
.lamp-power { height: 25px; padding: 0; border: 1px solid var(--ink); background: transparent; font: 500 7px "DM Mono", monospace; cursor: pointer; }
.lamp-power.active { background: var(--signal); }
.brightness-control { display: grid; grid-template-columns: auto 1fr; align-items: center; gap: 6px; color: var(--muted); font: 500 6px "DM Mono", monospace; }
.lamp-brightness { width: 100%; accent-color: var(--ink); }
.color-controls { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(9, 1fr); gap: 3px; }
.color-controls button { min-width: 0; height: 17px; padding: 0; border: 1px solid var(--ink); cursor: pointer; }
.color-controls button[data-color="white"] { background: #fff; }
.color-controls button[data-color="red"] { background: #ef3b30; }
.color-controls button[data-color="orange"] { background: #ff8a00; }
.color-controls button[data-color="yellow"] { background: #ffd60a; }
.color-controls button[data-color="green"] { background: #34c759; }
.color-controls button[data-color="cyan"] { background: #3bdcff; }
.color-controls button[data-color="blue"] { background: #1677ff; }
.color-controls button[data-color="purple"] { background: #8b5cf6; }
.color-controls button[data-color="pink"] { background: #ff4fa3; }
.lamp-controls button:disabled, .lamp-controls input:disabled { cursor: default; opacity: .32; }
.lamp-action-pending .lamp-controls, .lamp-action-pending .group-controls { opacity: .55; pointer-events: none; }

.lights-footer { display: flex; justify-content: space-between; gap: 20px; padding-top: 12px; color: var(--muted); font: 500 8px "DM Mono", monospace; letter-spacing: .05em; }
.lights-footer span:first-child { color: var(--ink); }

@media (max-width: 920px) {
  .lights-board { width: min(100% - 20px, 760px); padding-top: 10px; }
  .lights-topbar { grid-template-columns: 1fr auto; }
  .lights-topbar > div:nth-child(2) { grid-column: 1 / -1; grid-row: 1; text-align: center; }
  .back-link { grid-column: 1; grid-row: 2; }
  .save-state { grid-column: 2; grid-row: 2; }
  .setup-note { grid-template-columns: 1fr auto; gap: 8px; }
  .setup-note span { grid-column: 1 / -1; grid-row: 2; }
  .setup-note button { grid-column: 2; grid-row: 1; }
  .groups-grid { grid-template-columns: 1fr; }
  .group-panel.unassigned { grid-column: auto; }
  .unassigned .lamp-list { grid-template-columns: 1fr; }
  .group-panel { min-height: 0; }
  .lamp-card { grid-template-columns: 28px minmax(0, 1fr) 105px 28px; padding: 10px; }
  .lamp-name { font-size: 14px; }
  .group-picker select { font-size: 9px; }
  .lights-footer { display: block; line-height: 1.5; }
  .lights-footer span { display: block; }
}

@media (max-width: 520px) {
  .lights-topbar > div:nth-child(2) { text-align: left; }
  .lamp-card { grid-template-columns: 27px minmax(0, 1fr) 92px; }
  .order-controls { grid-column: 2 / -1; display: flex; justify-content: flex-end; }
  .setup-note span { font-size: 10px; }
}