/* ESP32 simulator page */
.sim > *, .sim-main > * { min-width: 0; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
body:has(.sim) .site-footer { margin-top: 0; }

.sim {
  --canvas-bg: #f7f8f5;
  --grid-dot: #c9cdc4;
  --panel-bg: var(--surface);
  height: calc(100vh - 60px);
  min-height: 560px;
  display: grid;
  grid-template-rows: auto auto 1fr;
  grid-template-columns: minmax(0, 1fr);
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}
@media (prefers-color-scheme: dark) {
  .sim { --canvas-bg: #10151b; --grid-dot: #2a333d; }
}

/* ---------- toolbar ---------- */
.sim-toolbar { display: flex; justify-content: space-between; gap: 8px 16px; flex-wrap: wrap; padding: 8px 12px; border-bottom: 1px solid var(--border); background: var(--surface); }
.tb-group { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.sim-btn { display: inline-flex; align-items: center; gap: 6px; padding: 6px 12px; border-radius: 8px; border: 1px solid var(--border); background: var(--surface); color: var(--text); font: inherit; font-size: .88rem; font-weight: 600; cursor: pointer; line-height: 1.2; }
.sim-btn:hover:not(:disabled) { background: var(--surface-2); }
.sim-btn:disabled { opacity: .45; cursor: default; }
.sim-btn.run { background: var(--accent); color: var(--accent-ink); border-color: transparent; min-width: 118px; justify-content: center; }
.sim-btn.run:hover { filter: brightness(1.08); background: var(--accent); }
.sim-btn.icon { width: 34px; justify-content: center; padding: 6px 0; }
.sim-btn.ghost { background: transparent; }
.sim-toolbar select { width: auto; padding: 6px 8px; font-size: .88rem; }
.tb-examples { max-width: 240px; }
.sim-time { font-family: var(--mono); font-size: .85rem; color: var(--muted); min-width: 56px; text-align: right; }
.sim-status { font-size: .75rem; font-weight: 700; padding: 3px 9px; border-radius: 999px; background: var(--surface-2); color: var(--muted); }
.sim-status.running { background: color-mix(in srgb, var(--ok) 16%, transparent); color: var(--ok); }
.sim-status.paused { background: color-mix(in srgb, var(--warn) 16%, transparent); color: var(--warn); }
.sim-status.crashed, .sim-status.error { background: color-mix(in srgb, var(--danger) 16%, transparent); color: var(--danger); }

.sim-viewswitch { display: none; }

/* ---------- main grid ---------- */
.sim-main { display: grid; grid-template-columns: 190px minmax(0, 1fr) minmax(360px, 40%); min-height: 0; }
.sim-palette { border-right: 1px solid var(--border); background: var(--surface); display: flex; flex-direction: column; min-height: 0; }
.sim-palette input { margin: 8px; width: calc(100% - 16px); padding: 6px 10px; font-size: .85rem; }
.palette-list { overflow-y: auto; padding: 0 8px 12px; }
.palette-group { font-size: .7rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin: 12px 4px 6px; }
.palette-item { display: flex; align-items: center; gap: 8px; width: 100%; padding: 5px 6px; margin-bottom: 2px; border: 1px solid transparent; border-radius: 8px; background: none; color: var(--text); font: inherit; font-size: .8rem; text-align: left; cursor: grab; }
.palette-item:hover { background: var(--surface-2); border-color: var(--border); }
.palette-thumb { flex: 0 0 38px; height: 30px; display: grid; place-items: center; background: var(--canvas-bg); border-radius: 6px; }
.palette-thumb svg { width: 34px; height: 26px; }
.palette-name { line-height: 1.25; }

/* ---------- canvas ---------- */
.sim-canvas-wrap { position: relative; min-width: 0; min-height: 0; overflow: hidden; background: var(--canvas-bg); }
.sim-canvas { width: 100%; height: 100%; display: block; touch-action: none; user-select: none; color: var(--muted); }
.sim-canvas .grid-dot { fill: var(--grid-dot); }
.sim-canvas.zoomed-out .grid-bg { opacity: .5; }
.sim-canvas.panning { cursor: grabbing; }
.sim-canvas.drawing { cursor: crosshair; }
.part { cursor: move; }
.part .part-hit { fill: transparent; }
.part.selected .part-hit { fill: color-mix(in srgb, var(--accent) 10%, transparent); stroke: var(--accent); stroke-width: .8; stroke-dasharray: 3 2; }
.part.has-error .part-hit { fill: color-mix(in srgb, var(--danger) 12%, transparent); stroke: var(--danger); stroke-width: 1; }
.part.has-warn .part-hit { stroke: var(--warn); stroke-width: .8; stroke-dasharray: 2 2; }
.part-label { fill: var(--muted); }
[data-status=running] .part-joystick, [data-status=running] .part-encoder, [data-status=running] .part-keypad, [data-status=running] .part-rc522, [data-status=running] .part-button, [data-status=running] .part-slideswitch, [data-status=running] .part-touchpad, [data-status=running] .part-pir, [data-status=running] .part-potentiometer { cursor: pointer; }

.wire-line { fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.wire-shadow { fill: none; stroke: #0003; stroke-width: 3.2; stroke-linecap: round; stroke-linejoin: round; }
.wire-hit { fill: none; stroke: transparent; stroke-width: 8; cursor: pointer; }
.wire.selected .wire-shadow { stroke: color-mix(in srgb, var(--accent) 70%, transparent); stroke-width: 4.5; }
.wire-bend { cursor: move; }
.wire-draft { fill: none; stroke: var(--accent); stroke-width: 1.8; stroke-dasharray: 4 3; pointer-events: none; }
.layer-draft { pointer-events: none; }

.pin { fill: transparent; stroke: transparent; stroke-width: 1; cursor: crosshair; }
.pin.hole { r: 2.2; }
.pin:hover { fill: color-mix(in srgb, var(--accent) 45%, transparent); stroke: var(--accent); }
.sim-canvas.drawing .pin:not(.hole) { stroke: color-mix(in srgb, var(--accent) 60%, transparent); }
.pin.linked:not(.hole) { fill: transparent; }

.canvas-tools { position: absolute; top: 10px; right: 10px; display: flex; gap: 4px; background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 3px; box-shadow: var(--shadow); }
.icon-btn { width: 30px; height: 30px; border: 0; border-radius: 7px; background: transparent; color: var(--text); font-size: 1rem; cursor: pointer; display: grid; place-items: center; }
.icon-btn:hover { background: var(--surface-2); }

.sim-props { position: absolute; left: 10px; bottom: 10px; width: 250px; max-height: calc(100% - 20px); overflow: auto; background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px 12px; box-shadow: var(--shadow); font-size: .85rem; display: flex; flex-direction: column; gap: 6px; }
.sim-props[hidden] { display: none; }
.props-head { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.props-head strong { font-size: .9rem; }
.props-actions { margin-left: auto; display: flex; gap: 2px; }
.props-label { font-size: .75rem; font-weight: 600; color: var(--muted); margin-top: 4px; flex-direction: row; }
.sim-props select, .sim-props input:not([type=checkbox]):not([type=range]) { padding: 5px 8px; font-size: .85rem; }
.range-row { display: flex; align-items: center; gap: 8px; }
.range-row input[type=range] { flex: 1; padding: 0; border: 0; background: none; accent-color: var(--accent); }
.range-row output { font-family: var(--mono); min-width: 38px; text-align: right; font-size: .8rem; }
.props-check { font-weight: 500; font-size: .85rem; margin-top: 4px; }
.swatches { display: flex; flex-wrap: wrap; gap: 6px; }
.swatch { width: 22px; height: 22px; border-radius: 50%; border: 2px solid var(--surface); box-shadow: 0 0 0 1px var(--border); cursor: pointer; }
.swatch.on { box-shadow: 0 0 0 2px var(--accent); }
.props-pins summary { cursor: pointer; font-size: .75rem; color: var(--muted); font-weight: 600; }
.pin-list { display: flex; flex-wrap: wrap; gap: 3px; margin-top: 6px; }
.pin-chip { font-family: var(--mono); font-size: .68rem; padding: 1px 5px; border-radius: 4px; background: var(--surface-2); }

.sim-tip { position: absolute; z-index: 5; pointer-events: none; background: var(--header-bg); color: #e8eef3; border-radius: 7px; padding: 6px 9px; font-size: .78rem; line-height: 1.35; max-width: 220px; box-shadow: var(--shadow); }
.sim-tip .muted { color: #aeb9c4; font-family: var(--mono); }
.sim-example-note { position: absolute; left: 10px; top: 10px; right: 190px; margin: 0; font-size: .8rem; color: var(--muted); pointer-events: none; max-width: 520px; }
.sim-toast { position: absolute; left: 50%; top: 12px; transform: translateX(-50%); background: var(--header-bg); color: #fff; padding: 8px 14px; border-radius: 8px; font-size: .85rem; box-shadow: var(--shadow); }

/* ---------- code + panels ---------- */
.sim-side { border-left: 1px solid var(--border); display: grid; grid-template-rows: minmax(0, 1.25fr) minmax(0, 1fr); min-height: 0; background: var(--surface); }
.sim-code { display: flex; flex-direction: column; min-height: 0; border-bottom: 1px solid var(--border); }
.pane-head { display: flex; align-items: center; gap: 10px; padding: 6px 12px; font-size: .8rem; color: var(--muted); border-bottom: 1px solid var(--border); background: var(--surface-2); }
.code-note { color: var(--warn); font-weight: 600; }
.code-host { flex: 1; min-height: 0; position: relative; }
.code-host .CodeMirror { position: absolute; inset: 0; height: auto; font-family: var(--mono); font-size: 13px; line-height: 1.5; background: var(--surface); color: var(--text); }
.CodeMirror-gutters { background: var(--surface-2); border-right: 1px solid var(--border); }
.CodeMirror-linenumber { color: var(--muted); }
.CodeMirror-cursor { border-left-color: var(--text); }
.CodeMirror-selected, .CodeMirror-focused .CodeMirror-selected { background: color-mix(in srgb, var(--accent) 22%, transparent) !important; }
.CodeMirror-matchingbracket { color: var(--accent) !important; text-decoration: underline; }
.cm-s-default .cm-keyword { color: #a1328f; font-weight: 600; }
.cm-s-default .cm-type, .cm-s-default .cm-variable-3 { color: #0f7a8a; }
.cm-s-default .cm-number { color: #b35900; }
.cm-s-default .cm-string { color: #2a7d2e; }
.cm-s-default .cm-comment { color: #7a8691; font-style: italic; }
.cm-s-default .cm-meta { color: #8a5a00; }
.cm-s-default .cm-def { color: #2a5cc8; }
@media (prefers-color-scheme: dark) {
  .cm-s-default .cm-keyword { color: #e089d2; }
  .cm-s-default .cm-type, .cm-s-default .cm-variable-3 { color: #5fd3e0; }
  .cm-s-default .cm-number { color: #f0a45d; }
  .cm-s-default .cm-string { color: #8fd28f; }
  .cm-s-default .cm-comment { color: #7f8b96; }
  .cm-s-default .cm-meta { color: #e0bb62; }
  .cm-s-default .cm-def { color: #8ab4ff; }
  .cm-s-default .cm-variable, .cm-s-default .cm-property, .cm-s-default .cm-operator { color: var(--text); }
}
.cm-error-line { background: color-mix(in srgb, var(--danger) 18%, transparent); }
.cm-crash-line { background: color-mix(in srgb, var(--warn) 22%, transparent); }

.sim-panels { display: flex; flex-direction: column; min-height: 0; }
.sim-panels .tabs { margin: 0; padding: 0 8px; border-bottom: 1px solid var(--border); flex-shrink: 0; overflow-x: auto; }
.sim-panels .tab, .sim-panels [role=tab] { background: none; border: 0; border-bottom: 2px solid transparent; padding: 8px 10px; font: inherit; font-size: .82rem; font-weight: 600; color: var(--muted); cursor: pointer; white-space: nowrap; display: inline-flex; align-items: center; gap: 6px; }
.sim-panels [role=tab].active { color: var(--text); border-bottom-color: var(--accent); }
.badge { font-size: .68rem; min-width: 16px; padding: 0 5px; border-radius: 999px; text-align: center; line-height: 16px; }
.badge:empty { display: none; }
.badge.warn { background: color-mix(in srgb, var(--warn) 22%, transparent); color: var(--warn); }
.badge.error { background: var(--danger); color: #fff; }
.panel-body { flex: 1; min-height: 0; display: flex; flex-direction: column; }
.panel-body[hidden] { display: none; }

.serial-out { flex: 1; margin: 0; padding: 8px 12px; overflow: auto; font-family: var(--mono); font-size: 12.5px; line-height: 1.45; white-space: pre-wrap; word-break: break-word; background: var(--code-bg); color: var(--code-text); }
.serial-boot { color: #6f7c88; }
.serial-sim { color: #58b7ff; }
.serial-echo { color: #f0c36b; }
.serial-bar, .mqtt-bar, .browser-bar { display: flex; gap: 6px; padding: 6px 8px; border-top: 1px solid var(--border); align-items: center; flex-wrap: wrap; }
.serial-in { flex: 1 1 160px; padding: 5px 8px; font-family: var(--mono); font-size: .82rem; }
.serial-ending { width: auto; padding: 5px 6px; font-size: .78rem; }
.check.small { font-size: .78rem; font-weight: 500; gap: 4px; flex-direction: row; align-items: center; display: inline-flex; }

.problems { list-style: none; margin: 0; padding: 4px 0; overflow: auto; flex: 1; font-size: .83rem; }
.problem { display: flex; gap: 8px; align-items: baseline; padding: 6px 12px; border-bottom: 1px solid var(--border); }
.problem-icon { flex-shrink: 0; width: 14px; text-align: center; }
.problem.error .problem-icon { color: var(--danger); }
.problem.warn .problem-icon { color: var(--warn); }
.problem.info .problem-icon { color: var(--accent); }
.problem.ok { color: var(--muted); }
.problem-text { flex: 1; }
.problem-link { background: none; border: 0; color: var(--accent); font: inherit; font-size: .78rem; cursor: pointer; text-decoration: underline; white-space: nowrap; padding: 0; }

.browser-bar { border-top: 0; border-bottom: 1px solid var(--border); }
.browser-addr { flex: 1; padding: 5px 8px; font-family: var(--mono); font-size: .8rem; }
.browser-status { font-family: var(--mono); font-size: .78rem; min-width: 28px; }
.browser-status.ok { color: var(--ok); }
.browser-status.bad { color: var(--danger); }
.browser-frame { flex: 1; width: 100%; border: 0; background: #fff; min-height: 0; }

.mqtt-log { list-style: none; margin: 0; padding: 6px 0; overflow: auto; flex: 1; font-size: .8rem; font-family: var(--mono); }
.mqtt-log li { padding: 3px 12px; border-bottom: 1px dashed var(--border); word-break: break-all; }
.mqtt-log code { background: none; color: var(--muted); }
.mqtt-dir { display: inline-block; width: 16px; color: var(--accent); }
.mqtt-log .from-ui .mqtt-dir { color: var(--warn); }
.mqtt-idle { color: var(--muted); font-family: var(--font); border: 0 !important; }
.mqtt-topic { flex: 1 1 180px; } .mqtt-payload { flex: 1 1 120px; }
.mqtt-bar input:not([type=checkbox]) { padding: 5px 8px; font-size: .8rem; font-family: var(--mono); }

/* ---------- responsive ---------- */
@media (max-width: 1100px) {
  .sim-main { grid-template-columns: 150px minmax(0, 1fr) minmax(320px, 42%); }
}
@media (max-width: 900px) {
  .sim { height: calc(100dvh - 60px); }
  .sim-viewswitch { display: flex; border-bottom: 1px solid var(--border); background: var(--surface); }
  .sim-viewswitch button { flex: 1; padding: 8px; border: 0; background: none; font: inherit; font-weight: 600; font-size: .88rem; color: var(--muted); border-bottom: 2px solid transparent; }
  .sim-viewswitch button.active { color: var(--text); border-bottom-color: var(--accent); }
  .sim-main { display: flex; flex-direction: column; }
  .sim-palette { border-right: 0; border-bottom: 1px solid var(--border); flex-direction: row; align-items: center; }
  .sim-palette input { display: none; }
  .palette-list { display: flex; overflow-x: auto; overflow-y: hidden; padding: 6px; gap: 4px; }
  .palette-group { display: none; }
  .palette-item { flex: 0 0 auto; width: auto; flex-direction: column; gap: 2px; font-size: .68rem; padding: 4px; max-width: 86px; text-align: center; }
  .palette-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 78px; }
  .sim-canvas-wrap, .sim-side { flex: 1; min-height: 0; }
  .sim[data-view=circuit] .sim-side, .sim[data-view=code] .sim-canvas-wrap, .sim[data-view=panels] .sim-canvas-wrap { display: none; }
  .sim[data-view=code] .sim-palette, .sim[data-view=panels] .sim-palette { display: none; }
  .sim[data-view=code] .sim-side { grid-template-rows: 1fr 0; }
  .sim[data-view=code] .sim-panels { display: none; }
  .sim[data-view=panels] .sim-side { grid-template-rows: 0 1fr; }
  .sim[data-view=panels] .sim-code { display: none; }
  .sim-side { border-left: 0; }
  .sim-example-note { display: none; }
  .sim-props { width: auto; right: 10px; max-height: 45%; }
  .tb-examples { max-width: 150px; }
  .sim-toolbar { padding: 6px 8px; gap: 6px; }
  .sim-btn.run { min-width: 0; }
  .sim-toolbar .sim-btn.ghost { padding: 6px 8px; }
  .sim-time { min-width: 0; }
}