/* ===== Simulador Ladder PLC — estilos ===== */
:root {
  --bg: #eef2f7;
  --card: #ffffff;
  --border: #e2e8f0;
  --text: #0f172a;
  --muted: #64748b;
  --blue: #2563eb;
  --blue-soft: #eff6ff;
  --green: #16a34a;
  --green-soft: #f0fdf4;
  --red: #ef4444;
  --amber: #f59e0b;
  --ribbon-bg: #f8fafc;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(15, 23, 42, .07);
  font-size: 15px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body { height: 100%; }

body {
  font-family: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
}

#app, .app { height: 100vh; display: flex; flex-direction: column; }

button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
input, select { font: inherit; color: inherit; }
.mono { font-family: ui-monospace, "Cascadia Code", monospace; }
.muted { color: var(--muted); font-size: .85rem; }
.spacer { flex: 1; }

/* ================= Faixa de opções (ribbon) ================= */
.ribbon {
  background: var(--card); border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 2px rgba(15, 23, 42, .04); flex: none;
}

.ribbon-top {
  display: flex; align-items: flex-end; gap: 18px;
  padding: 8px 18px 0; border-bottom: 1px solid var(--border);
}

.brand { display: flex; align-items: center; gap: 10px; padding-bottom: 7px; }
.logo { width: 30px; height: 30px; color: var(--blue); }
.brand-name { font-size: 1.05rem; line-height: 1.15; }
.brand-name b { color: var(--blue); }
.brand-sub { font-size: .72rem; color: var(--muted); }

.ribbon-tabs { display: flex; gap: 2px; }
.ribbon-tab {
  padding: 8px 22px; font-size: .9rem; color: var(--muted);
  border: 1px solid transparent; border-bottom: none;
  border-radius: 9px 9px 0 0; position: relative; top: 1px;
}
.ribbon-tab:hover { background: var(--blue-soft); color: var(--blue); }
.ribbon-tab.active {
  background: var(--ribbon-bg); border-color: var(--border);
  color: var(--blue); font-weight: 600;
}

.ribbon-top-right { margin-left: auto; padding-bottom: 9px; }

.ribbon-body {
  display: flex; align-items: stretch; gap: 0;
  padding: 9px 14px 6px; background: var(--ribbon-bg);
  min-height: 118px; overflow-x: auto;
}

.rb-group {
  display: flex; flex-direction: column; justify-content: space-between;
  padding: 0 10px; border-right: 1px solid var(--border); flex: none;
}
.rb-group:last-child { border-right: none; }

.rb-items { display: flex; gap: 2px; align-items: flex-start; }
.rb-items-col { flex-direction: column; align-items: stretch; gap: 7px; min-width: 190px; }

.rb-label {
  font-size: .69rem; color: var(--muted); text-align: center;
  margin-top: 7px; padding-top: 5px; border-top: 1px solid var(--border);
  white-space: nowrap;
}

.rb-btn {
  display: flex; flex-direction: column; align-items: center; gap: 5px;
  width: 74px; padding: 6px 3px; border-radius: 8px;
  font-size: .69rem; line-height: 1.2; text-align: center; color: var(--text);
  border: 1px solid transparent;
}
.rb-btn:hover:not(:disabled) { background: var(--blue-soft); border-color: #bfdbfe; }
.rb-btn.active { background: var(--blue-soft); border-color: var(--blue); font-weight: 600; }
.rb-btn:disabled { opacity: .38; cursor: not-allowed; }
.rb-btn-sm { width: 62px; }
.rb-ico { font-size: 1.3rem; line-height: 1.1; }

/* botões de instrução (aba Elementos) */
.rb-instr { width: 64px; cursor: grab; }
.rb-instr:active { cursor: grabbing; }
.rb-glyph {
  font-family: ui-monospace, "Cascadia Code", monospace;
  font-size: .8rem; font-weight: 600; letter-spacing: .5px;
  border: 1.4px solid #334155; border-radius: 6px;
  padding: 7px 5px; min-width: 44px; background: #fff;
}
.rb-instr.active .rb-glyph { border-color: var(--blue); color: var(--blue); }
.rb-cap { color: var(--muted); }
.rb-instr.active .rb-cap { color: var(--blue); }

/* campos dentro da faixa */
.rb-field { display: flex; flex-direction: column; gap: 3px; font-size: .72rem; color: var(--muted); }
.rb-select, .rb-num {
  padding: 6px 9px; border: 1px solid var(--border); border-radius: 8px;
  font-size: .86rem; background: #fff; color: var(--text); width: 100%;
}
.rb-select:focus, .rb-num:focus { outline: 2px solid #bfdbfe; border-color: var(--blue); }
.rb-note { font-size: .7rem; color: var(--muted); line-height: 1.4; max-width: 240px; }

.rb-chips { display: flex; gap: 4px; }
.rb-chip {
  font-size: .72rem; padding: 3px 9px; border-radius: 99px;
  border: 1px solid var(--border); background: #fff; color: var(--muted);
}
.rb-chip:hover { border-color: var(--blue); color: var(--blue); }
.rb-chip.active { background: var(--blue); border-color: var(--blue); color: #fff; }

.rb-readout { display: flex; justify-content: space-between; gap: 12px; font-size: .78rem; }
.rb-readout-k { color: var(--muted); }
.rb-readout-v { font-weight: 600; }

/* cores dos botões de execução */
.rb-run .rb-ico { color: var(--green); }
.rb-pause .rb-ico { color: var(--amber); }
.rb-stop .rb-ico { color: var(--red); }
.rb-restart .rb-ico { color: var(--blue); }

/* ================= Botões ================= */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px; border-radius: 9px; font-weight: 500;
  border: 1px solid transparent; transition: filter .15s, background .15s;
}
.btn:hover { filter: brightness(.96); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn-green { background: var(--green); color: #fff; }
.btn-red { background: var(--red); color: #fff; }
.btn-amber { background: var(--amber); color: #fff; }
.btn-blue { background: var(--blue); color: #fff; }
.btn-outline { background: var(--card); border-color: var(--border); }
.btn-ghost:hover { background: var(--blue-soft); }
.btn-red-outline { background: var(--card); border-color: #fecaca; color: var(--red); }

.icon-btn {
  padding: 5px 9px; border-radius: 7px; color: var(--muted); font-size: .95rem;
}
.icon-btn:hover { background: var(--blue-soft); color: var(--blue); }
.icon-btn.danger:hover { background: #fef2f2; color: var(--red); }

/* ================= Layout principal ================= */
.layout {
  flex: 1; display: flex; padding: 12px 18px; min-height: 0;
}

/* ---------- área de trabalho ---------- */
.workspace {
  flex: 1; display: flex; flex-direction: column; min-width: 0; min-height: 0;
}

.tabs { display: flex; gap: 4px; align-items: flex-end; padding: 0 4px; }
.tab {
  display: inline-flex; align-items: center; gap: 8px;
  background: #e5eaf1; border: 1px solid var(--border); border-bottom: none;
  border-radius: 10px 10px 0 0; padding: 8px 14px; font-size: .88rem; color: var(--muted);
}
.tab.active { background: var(--card); color: var(--text); font-weight: 500; }
.tab-close { color: var(--muted); font-size: .75rem; padding: 1px 3px; border-radius: 4px; }
.tab-close:hover { background: #fee2e2; color: var(--red); }
.tab-add { padding: 8px 12px; }

.ladder-scroll {
  flex: 1; overflow: auto; background: var(--card);
  border: 1px solid var(--border); border-radius: 0 var(--radius) var(--radius) var(--radius);
  box-shadow: var(--shadow);
  background-image: radial-gradient(#dde3ec 1px, transparent 1px);
  background-size: 22px 22px;
}
.ladder-area { transform-origin: 0 0; padding: 18px 12px; width: max-content; }

.add-rung { margin: 10px 0 18px 64px; }

/* ---------- rung ---------- */
.rung-card { position: relative; }
.rung-tools {
  position: absolute; right: 8px; top: 2px; z-index: 5;
  display: flex; gap: 4px; opacity: 0; transition: opacity .15s;
}
.rung-card:hover .rung-tools { opacity: 1; }
.rung-tools button {
  font-size: .72rem; background: var(--card); border: 1px solid var(--border);
  border-radius: 6px; padding: 3px 8px; color: var(--muted);
}
.rung-tools button:hover { color: var(--blue); border-color: var(--blue); }
.rung-tools button.danger:hover { color: var(--red); border-color: var(--red); }
.rung-tools button:disabled { opacity: .4; cursor: not-allowed; }

.rung-svg { display: block; }

/* elementos SVG */
.rail { stroke: #1e293b; stroke-width: 3.5; stroke-linecap: round; }
.wire { stroke: #64748b; stroke-width: 2; fill: none; }
.wire.lit { stroke: var(--green); stroke-width: 2.6; }
.sym { stroke: #334155; stroke-width: 2.2; fill: none; stroke-linecap: round; }
.sym.lit { stroke: var(--green); }
.sym-letter {
  font: 600 12px ui-monospace, monospace; fill: #334155;
  text-anchor: middle; pointer-events: none;
}
.lbl { font: 12.5px "Inter", system-ui, sans-serif; fill: #334155; }
.lbl.lit { fill: #15803d; font-weight: 600; }
.blk { fill: #fff; stroke: #334155; stroke-width: 2; }
.blk.lit { stroke: var(--green); fill: var(--green-soft); }
.blk-title { font: 700 13px "Inter", system-ui, sans-serif; fill: var(--text); pointer-events: none; }
.blk-line { font: 12px "Inter", system-ui, sans-serif; fill: #334155; pointer-events: none; }
.blk-line.strong { font-weight: 600; }
.blk-line.small { font-size: 9.5px; fill: var(--muted); }
.rnum { font: 12px ui-monospace, monospace; fill: #94a3b8; }

/* acumulados exibidos na caixa do elemento: ET dos timers, CV dos contadores */
.blk-acc {
  font: 600 11px ui-monospace, "Cascadia Code", monospace;
  fill: var(--blue); pointer-events: none;
}
.blk-acc.done { fill: #15803d; }
.acc-track { fill: #e2e8f0; pointer-events: none; }
.acc-fill { fill: var(--blue); pointer-events: none; transition: width .1s linear; }
.acc-fill.done { fill: var(--green); }

.el { cursor: pointer; }
.hit { fill: transparent; stroke: none; }
.el:hover .hit { fill: rgba(37, 99, 235, .06); }

.cell-target { fill: transparent; stroke: transparent; cursor: copy; }
.cell-target:hover { stroke: #93c5fd; stroke-dasharray: 5 4; stroke-width: 1.5; fill: rgba(239, 246, 255, .6); }

.out-dropzone { fill: transparent; stroke: none; }

/* links de ramal e pontos de conexão */
.link-hit { stroke: transparent; stroke-width: 14; cursor: pointer; }
.link-g:hover line.wire { stroke: var(--red); }
.link-handle {
  fill: #fff; stroke: #94a3b8; stroke-width: 1.5;
  opacity: .35; cursor: pointer; transition: opacity .12s;
}
.link-handle:hover { opacity: 1; fill: var(--blue-soft); stroke: var(--blue); stroke-width: 2; }

/* zonas de empilhamento: inserir em paralelo acima/abaixo de um elemento */
.stack-zone-g { opacity: 0; pointer-events: none; cursor: copy; transition: opacity .12s; }
.stack-zone { fill: rgba(37, 99, 235, .07); stroke: #60a5fa; stroke-width: 1.3; stroke-dasharray: 4 3; }
.stack-plus { font: 10.5px "Inter", system-ui, sans-serif; fill: var(--blue); pointer-events: none; }
.zones-on .stack-zone-g { pointer-events: all; }
.zones-on .el:hover .stack-zone-g { opacity: .9; }
.zones-show .stack-zone-g { opacity: .45; pointer-events: all; }
.stack-zone-g:hover, .stack-zone-g.hot { opacity: 1 !important; }
.stack-zone-g:hover .stack-zone, .stack-zone-g.hot .stack-zone {
  fill: rgba(37, 99, 235, .18); stroke: var(--blue); stroke-width: 1.8;
}

/* arrasto de elemento existente */
.el.dimmed { opacity: .35; }
.drag-ghost { pointer-events: none; }
.drag-ghost rect { fill: #fff; stroke: var(--blue); stroke-width: 1.6; opacity: .95;
  filter: drop-shadow(0 3px 6px rgba(15, 23, 42, .25)); }
.drag-ghost text { font: 600 12px "Inter", system-ui, sans-serif; fill: var(--blue); }
.rung-svg .cell-target.hot { stroke: var(--blue); stroke-dasharray: 5 4; fill: rgba(239, 246, 255, .8); }
.out-slot { cursor: copy; opacity: .55; }
.out-slot:hover { opacity: 1; }
.slot-rect { fill: none; stroke: #94a3b8; stroke-dasharray: 5 4; stroke-width: 1.4; }
.out-slot:hover .slot-rect { stroke: var(--blue); }
.slot-plus { font: 12px "Inter", system-ui, sans-serif; fill: var(--muted); }
.out-slot:hover .slot-plus { fill: var(--blue); }

/* ---------- caixa flutuante de simulação ---------- */
.float-panel {
  position: fixed; z-index: 90; display: flex; flex-direction: column;
  background: var(--card); border: 1px solid var(--border); border-radius: 13px;
  box-shadow: 0 18px 44px rgba(15, 23, 42, .24);
  overflow: hidden;
}
.float-panel.collapsed { max-height: none; }

.float-head {
  display: flex; align-items: center; gap: 8px;
  padding: 9px 8px 9px 12px; border-bottom: 1px solid var(--border);
  background: linear-gradient(#ffffff, #f1f5f9); cursor: move;
  border-radius: 13px 13px 0 0; user-select: none;
}
.float-panel.collapsed .float-head { border-bottom: none; }
.float-grip { color: #94a3b8; font-size: .9rem; }
.float-title { font-weight: 600; font-size: .88rem; margin-right: auto; }

.float-body {
  padding: 12px 14px 16px; overflow-y: auto;
  display: flex; flex-direction: column; gap: 12px;
}

.sim-status { display: inline-flex; align-items: center; gap: 6px; font-size: .8rem; color: var(--muted); }
.sim-status.big { font-size: .95rem; font-weight: 600; }
.sim-status .dot { width: 9px; height: 9px; border-radius: 50%; background: #cbd5e1; }
.sim-status.running { color: var(--green); }
.sim-status.running .dot { background: var(--green); box-shadow: 0 0 0 3px rgba(22, 163, 74, .18); animation: pulse 1.2s ease-in-out infinite; }
.sim-status.paused { color: var(--amber); }
.sim-status.paused .dot { background: var(--amber); }

@keyframes pulse { 50% { box-shadow: 0 0 0 6px rgba(22, 163, 74, .06); } }

.sim-controls { display: flex; gap: 6px; flex-wrap: wrap; }
.sim-controls .btn { padding: 7px 12px; font-size: .84rem; }

.sim-meta {
  display: flex; justify-content: space-between; gap: 8px;
  font-size: .74rem; color: var(--muted);
  background: var(--ribbon-bg); border-radius: 8px; padding: 6px 9px;
}
.sim-meta b { color: var(--text); }

.sim-section { border-top: 1px solid var(--border); padding-top: 10px; }
.section-title { font-weight: 600; font-size: .86rem; margin-bottom: 8px; }

.led-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px 4px; }
.led-item { display: flex; flex-direction: column; align-items: center; gap: 5px; }
.led-name { font-size: .72rem; color: var(--muted); font-family: ui-monospace, monospace; }
.led-name em.var-type { font-style: normal; font-size: .62rem; color: #94a3b8; }

.led {
  width: 22px; height: 22px; border-radius: 7px; background: #e2e8f0;
  border: 1px solid #cbd5e1; cursor: pointer; transition: background .12s;
}
.led.on { background: #22c55e; border-color: #16a34a; box-shadow: 0 0 6px rgba(34, 197, 94, .55); }

.analog-row { margin-bottom: 10px; }
.analog-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 4px; }
.analog-row input[type="range"] { width: 100%; accent-color: var(--blue); }

.num-input {
  width: 90px; padding: 4px 8px; border: 1px solid var(--border);
  border-radius: 7px; font-size: .82rem; text-align: right;
  font-family: ui-monospace, monospace;
}

.value-row { display: flex; justify-content: space-between; align-items: center; padding: 4px 0; }
.value-badge {
  font-family: ui-monospace, monospace; font-size: .85rem; font-weight: 600;
  background: var(--blue-soft); color: var(--blue); border-radius: 6px; padding: 2px 10px;
}

.bar-row { display: grid; grid-template-columns: 42px 1fr auto; gap: 8px; align-items: center; padding: 4px 0; }
.bar { height: 8px; background: #e2e8f0; border-radius: 99px; overflow: hidden; }
.bar-fill { height: 100%; background: var(--blue); border-radius: 99px; transition: width .1s linear; }
.bar-fill.amber { background: var(--amber); }
.bar-text { font-size: .74rem; color: var(--muted); font-family: ui-monospace, monospace; white-space: nowrap; }

/* ================= Rodapé ================= */
.statusbar {
  display: flex; align-items: center; gap: 16px;
  background: var(--card); border-top: 1px solid var(--border);
  padding: 7px 20px; font-size: .84rem;
}
.statusbar .sim-status { font-size: .82rem; }
.status-hint {
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  max-width: 62ch; min-width: 0;
}
.status-hint.warn { color: #b45309; }

/* ================= Modais ================= */
.modal-backdrop {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(15, 23, 42, .45);
  display: flex; align-items: center; justify-content: center; padding: 20px;
}
.modal {
  background: var(--card); border-radius: 14px; width: 460px; max-width: 100%;
  max-height: 90vh; display: flex; flex-direction: column;
  box-shadow: 0 20px 50px rgba(15, 23, 42, .3);
}
.modal-wide { width: 780px; }
.modal-head {
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 18px; border-bottom: 1px solid var(--border);
}
.modal-head h2 { font-size: 1.02rem; }
.modal-body { padding: 16px 18px; overflow-y: auto; }
.modal-foot {
  display: flex; gap: 8px; align-items: center;
  padding: 12px 18px; border-top: 1px solid var(--border);
}

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 14px; }
.form-grid label { display: flex; flex-direction: column; gap: 4px; font-size: .82rem; color: var(--muted); }
.form-grid .span2 { grid-column: span 2; }
.form-grid input, .form-grid select {
  padding: 7px 10px; border: 1px solid var(--border); border-radius: 8px;
  font-size: .88rem; background: #fff; color: var(--text);
}
.form-grid input:focus, .form-grid select:focus { outline: 2px solid #bfdbfe; border-color: var(--blue); }

.operand-box { border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px; margin-bottom: 10px; }
.hint { font-size: .76rem; color: var(--muted); margin-top: 8px; line-height: 1.4; }
.form-error { color: var(--red); font-size: .82rem; margin-top: 8px; }
.form-actions { display: flex; gap: 8px; margin-top: 14px; }

.var-table { width: 100%; border-collapse: collapse; font-size: .84rem; margin-bottom: 8px; }
.var-table th {
  text-align: left; color: var(--muted); font-weight: 600; font-size: .76rem;
  padding: 6px 8px; border-bottom: 1px solid var(--border);
}
.var-table td { padding: 6px 8px; border-bottom: 1px solid #f1f5f9; }
.var-table .row-actions { text-align: right; white-space: nowrap; }
.var-form { border-top: 1px solid var(--border); padding-top: 12px; margin-top: 8px; }
.var-form h3 { font-size: .92rem; margin-bottom: 10px; }

/* ================= Toast ================= */
.toast {
  position: fixed; bottom: 54px; left: 50%; transform: translateX(-50%);
  background: #0f172a; color: #fff; padding: 10px 20px; border-radius: 10px;
  font-size: .88rem; z-index: 200; box-shadow: 0 8px 24px rgba(15, 23, 42, .3);
}
.toast.warn { background: #b45309; }
.toast-enter-active, .toast-leave-active { transition: opacity .25s, transform .25s; }
.toast-enter-from, .toast-leave-to { opacity: 0; transform: translateX(-50%) translateY(8px); }

/* ================= Responsivo ================= */
@media (max-width: 1500px) {
  .rb-group { padding: 0 8px; }
  .rb-btn { width: 68px; font-size: .65rem; }
  .rb-instr { width: 58px; }
  .rb-glyph { min-width: 40px; padding: 6px 4px; font-size: .74rem; }
  .rb-ico { font-size: 1.15rem; }
  .status-hint { display: none; }
}

@media (max-width: 1180px) {
  .layout { padding: 10px; }
  .rb-items-col { min-width: 158px; }
  .rb-note { max-width: 200px; }
}

@media (max-width: 900px) {
  .ribbon-top { gap: 10px; padding: 6px 10px 0; }
  .brand-sub { display: none; }
  .ribbon-tab { padding: 8px 14px; font-size: .84rem; }
  .ribbon-body { min-height: 0; }
}