/* ═══════════════════════════════════════════════
   RESET & BASE
═══════════════════════════════════════════════ */
*{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#0f1117;--bg2:#1a1d27;--bg3:#252836;--bg4:#2e3245;
  --accent:#00d4ff;--accent2:#7c3aed;--accent3:#10b981;--warn:#f59e0b;--danger:#ef4444;
  --text:#e2e8f0;--text2:#94a3b8;--border:#334155;
  --radius:10px;--shadow:0 4px 24px rgba(0,0,0,.4);
}
body{background:var(--bg);color:var(--text);font-family:'Segoe UI',system-ui,sans-serif;min-height:100vh;overflow-x:hidden}
button{cursor:pointer;border:none;outline:none;transition:.15s}
input,select,textarea{outline:none;border:1px solid var(--border);background:var(--bg3);color:var(--text);border-radius:6px;padding:6px 10px}
input:focus,select:focus,textarea:focus{border-color:var(--accent)}
label{font-size:.85rem;color:var(--text2);display:block;margin-bottom:4px}
h2{font-size:1.15rem;font-weight:600;color:var(--text)}
h3{font-size:.95rem;font-weight:600;color:var(--text2)}
.row{display:flex;gap:12px;flex-wrap:wrap}
.col{flex:1;min-width:180px}
.gap{gap:8px}
hr{border:none;border-top:1px solid var(--border);margin:14px 0}

/* ═══════════════════════════════════════════════
   LAYOUT
═══════════════════════════════════════════════ */
#app{display:flex;flex-direction:column;height:100vh}

/* HEADER unificado: logo | tabs | conexión en una sola barra */
header{background:var(--bg2);border-bottom:1px solid var(--border);padding:0 16px;display:flex;align-items:stretch;gap:0;flex-shrink:0;min-height:46px}
.header-brand{display:flex;flex-direction:column;justify-content:center;padding:6px 16px 6px 0;border-right:1px solid var(--border);white-space:nowrap;flex-shrink:0}
header .logo{font-size:1.1rem;font-weight:700;color:var(--accent);letter-spacing:.5px;line-height:1.2}
header .subtitle{font-size:.68rem;color:var(--text2);line-height:1.2}
header .status-dot{width:9px;height:9px;border-radius:50%;background:var(--danger);display:inline-block;margin-right:5px;flex-shrink:0}
header .status-dot.ok{background:var(--accent3)}
#conn-status{font-size:.78rem;color:var(--text2);margin-left:auto;display:flex;align-items:center;gap:6px;padding:0 0 0 16px;flex-shrink:0;border-left:1px solid var(--border)}

/* TABS — ahora dentro del header, zona central */
nav.tabs{display:flex;flex:1;overflow-x:auto;align-items:stretch;background:transparent;border-bottom:none}
nav.tabs button{padding:0 16px;height:100%;background:none;color:var(--text2);font-size:.82rem;border-bottom:3px solid transparent;white-space:nowrap;border-radius:0;transition:.15s;display:flex;align-items:center}
nav.tabs button:hover{color:var(--text);background:rgba(255,255,255,.04)}
nav.tabs button.active{color:var(--accent);border-bottom-color:var(--accent)}
nav.tabs button .tab-icon{margin-right:5px;font-size:.9rem}

/* PANELS */
.panel-wrap{flex:1;overflow:hidden;display:flex;flex-direction:column;min-height:0}
.tab-panel{display:none;flex:1;overflow:auto;padding:12px 16px}
.tab-panel.active{display:flex;flex-direction:column;gap:12px;overflow:hidden}

/* CARD */
.card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:14px}
.card-title{font-size:.9rem;font-weight:600;color:var(--accent);margin-bottom:10px;display:flex;align-items:center;gap:7px}
.card-title svg{flex-shrink:0}

/* BUTTONS */
.btn{display:inline-flex;align-items:center;gap:6px;padding:7px 14px;border-radius:7px;font-size:.84rem;font-weight:500}
.btn-primary{background:var(--accent);color:#000}
.btn-primary:hover{filter:brightness(1.15)}
.btn-secondary{background:var(--bg4);color:var(--text);border:1px solid var(--border)}
.btn-secondary:hover{background:var(--border)}
.btn-success{background:var(--accent3);color:#000}
.btn-success:hover{filter:brightness(1.1)}
.btn-warn{background:var(--warn);color:#000}
.btn-danger{background:var(--danger);color:#fff}
.btn-danger:hover{filter:brightness(1.1)}
.btn-sm{padding:4px 10px;font-size:.78rem}
.btn-sm.active{background:var(--accent);color:#000;border-color:var(--accent)}
.btn:disabled{opacity:.45;cursor:not-allowed}

/* DROP ZONE */
.drop-zone{border:2px dashed var(--border);border-radius:var(--radius);padding:30px;text-align:center;cursor:pointer;transition:.2s;background:var(--bg3)}
.drop-zone:hover,.drop-zone.drag-over{border-color:var(--accent);background:rgba(0,212,255,.06)}
.drop-zone p{color:var(--text2);font-size:.88rem;margin-top:8px}
.drop-zone .dz-icon{font-size:2.2rem}

/* PREVIEW CANVAS */
#preview-canvas-wrap{position:relative;background:repeating-linear-gradient(45deg,#1a1d27,#1a1d27 10px,#1e2130 10px,#1e2130 20px);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;display:flex;align-items:center;justify-content:center}
#preview-canvas-wrap canvas{display:block}
.plotter-head{position:absolute;width:16px;height:16px;border-radius:50%;background:var(--accent);box-shadow:0 0 12px var(--accent);pointer-events:none;transition:left .05s linear,top .05s linear;transform:translate(-50%,-50%)}

/* RANGE CONTROLS */
.ctrl-group{display:flex;flex-direction:column;gap:4px}
.range-row{display:flex;align-items:center;gap:8px}
.range-row input[type=range]{flex:1;accent-color:var(--accent)}
.range-val{min-width:38px;text-align:right;font-size:.82rem;color:var(--accent);font-weight:600}

/* COLOR SWATCH */
.swatch-row{display:flex;gap:6px;flex-wrap:wrap;margin-top:4px}
.swatch{width:22px;height:22px;border-radius:4px;cursor:pointer;border:2px solid transparent;transition:.15s}
.swatch.sel{border-color:#fff}
.swatch:hover{transform:scale(1.15)}

/* FILE LIST */
.file-list{display:flex;flex-direction:column;gap:6px;max-height:280px;overflow-y:auto}
.file-item{display:flex;align-items:center;gap:8px;background:var(--bg3);border:1px solid var(--border);border-radius:7px;padding:7px 10px}
.file-item .fname{flex:1;font-size:.82rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.file-item .fsize{font-size:.75rem;color:var(--text2);white-space:nowrap}
.file-item .factions{display:flex;gap:4px;flex-shrink:0}

/* TAGS/BADGES */
.badge{display:inline-block;padding:2px 8px;border-radius:20px;font-size:.72rem;font-weight:600}
.badge-blue{background:rgba(0,212,255,.15);color:var(--accent)}
.badge-green{background:rgba(16,185,129,.15);color:var(--accent3)}
.badge-warn{background:rgba(245,158,11,.15);color:var(--warn)}

/* TOAST */
#toast{position:fixed;bottom:20px;right:20px;background:var(--bg3);border:1px solid var(--border);border-radius:8px;padding:10px 16px;font-size:.85rem;z-index:9999;opacity:0;transform:translateY(10px);transition:.25s;pointer-events:none;max-width:320px}
#toast.show{opacity:1;transform:translateY(0)}
#toast.t-ok{border-left:3px solid var(--accent3)}
#toast.t-err{border-left:3px solid var(--danger)}
#toast.t-info{border-left:3px solid var(--accent)}

/* SIMULATOR */
#sim-canvas{border:1px solid var(--border);border-radius:var(--radius);background:#fff;display:block}
.sim-wrap{position:relative;overflow:auto;border:1px solid var(--border);border-radius:var(--radius);background:#fff;min-height:420px;height:calc(100vh - 420px);max-height:640px}
#sim-head{position:absolute;width:14px;height:14px;border-radius:50%;background:red;box-shadow:0 0 8px red;pointer-events:none;transform:translate(-50%,-50%);transition:none}

/* PDF CANVAS */
#pdf-canvas{border:1px solid var(--border);border-radius:var(--radius)}

/* TEXT PREVIEW */
#txt-svg-wrap{background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;display:flex;align-items:center;justify-content:center;min-height:140px}
#txt-svg-wrap svg{display:block}

/* PROGRESS */
.progress{background:var(--bg3);border-radius:20px;height:6px;overflow:hidden;margin-top:6px}
.progress-bar{height:100%;background:linear-gradient(90deg,var(--accent),var(--accent2));border-radius:20px;transition:width .3s}

/* SCROLLBAR */
::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}

/* ═══════════════════════════════════════════════
   VISOR HPGL  — fix canvas no se corta arriba
═══════════════════════════════════════════════ */
/* El contenedor exterior permite scroll si el canvas desborda,
   pero nunca impone un max-height que corte la imagen arriba. */
.viewer-canvas-outer {
  overflow: auto;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #fff;
  width: 100%;
  /* Sin height fijo: el canvas define su propio tamaño */
}
/* El canvas del visor no debe tener max-width restrictivo */
#viewer-canvas {
  display: block;
  max-width: none !important;
}

/* RESPONSIVE */
@media(max-width:600px){
  .tab-panel{padding:10px}
  nav.tabs button{padding:0 10px;font-size:.72rem}
  .header-brand .subtitle{display:none}
}

/* ── DESIGN STUDIO ────────────────────────────────────── */
.design-tool {
  width: 38px; height: 38px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 7px; cursor: pointer; font-size: 1rem; font-weight: 700;
  color: var(--text2); user-select: none; transition: background .15s, color .15s;
}
.design-tool:hover { background: var(--bg3); color: var(--text); }
.design-tool.active { background: #7c3aed; color: #fff; }

.design-layer-row {
  display: flex; align-items: center; gap:5px; padding: 4px 8px;
  border-bottom: 1px solid rgba(255,255,255,.04); cursor: pointer;
  font-size: .78rem; transition: background .1s;
}
.design-layer-row:hover { background: var(--bg3); }
.design-layer-row.active { background: rgba(124,58,237,.2); }
.design-layer-thumb {
  width: 30px; height: 22px; object-fit: cover;
  border-radius: 3px; background: #fff; flex-shrink: 0;
}
.design-ctx-item {
  padding: 7px 14px; cursor: pointer; display: flex; align-items: center; gap: 8px;
  transition: background .1s; white-space: nowrap;
}
.design-ctx-item:hover { background: rgba(124,58,237,.2); }
.design-ctx-sep { height: 1px; background: var(--border); margin: 3px 0; }

/* Submenú "Organizar" */
.design-ctx-sub-trigger { position: relative; }
.design-ctx-submenu {
  display: none;
  position: absolute;
  left: 100%;
  top: -4px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0,0,0,.5);
  padding: 4px 0;
  min-width: 190px;
  z-index: 9400;
}
.design-ctx-sub-trigger:hover > .design-ctx-submenu { display: block; }

/* Multi-selección en panel de capas */
.design-layer-row.selected-multi {
  background: rgba(167,139,250,0.12);
  border-left: 2px solid #a78bfa;
}

/* Reglas mm */
#design-ruler-h, #design-ruler-v {
  image-rendering: pixelated;
  cursor: default;
  user-select: none;
}

/* Tab-design ocupa toda la altura disponible sin scroll externo */
#tab-design { padding: 0 !important; overflow: hidden; }