*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --bg: #f5f0e8; --paper: #faf7f2;
  --ink: #1c1c1e; --ink2: #3d3a35; --muted: #7a7268;
  --rule: #d4cec4; --blue: #1a4fd6; --blue-l: #dde6fb;
  --orange: #c94a00; --orange-l: #fce8dc;
  --serif: 'Playfair Display', Georgia, serif;
  --sans: 'Source Sans 3', sans-serif;
  --mono: 'DM Mono', monospace;
}
body {
  background: var(--bg); color: var(--ink);
  font-family: var(--sans); font-size: 16px; line-height: 1.7;
  overflow-x: hidden;
}
body::before {
  content: ''; position: fixed; inset: 0;
  background-image:
    linear-gradient(var(--rule) 1px, transparent 1px),
    linear-gradient(90deg, var(--rule) 1px, transparent 1px);
  background-size: 40px 40px; opacity: 0.35;
  pointer-events: none; z-index: 0;
}
.page {
  position: relative; z-index: 1;
  max-width: 860px; margin: 0 auto; padding: 64px 48px 100px;
}

/* ══════════════════════════════════════════════
   RESPONSIVE — el ancho crece con la pantalla,
   pero el texto se queda en medida legible
══════════════════════════════════════════════ */
@media (min-width: 1100px) {
  .page { max-width: 1000px; padding: 72px 56px 110px; }
}
@media (min-width: 1400px) {
  .page { max-width: 1120px; padding: 80px 64px 120px; }
  .three-container { height: 320px; }
}
@media (min-width: 1800px) {
  .page { max-width: 1200px; }
  .three-container { height: 360px; }
}
/* Tablet */
@media (max-width: 900px) {
  .page { padding: 48px 32px 80px; }
}
/* Móvil */
@media (max-width: 640px) {
  .page { padding: 32px 18px 64px; }
  h1 { font-size: 30px; }
  h2 { font-size: 22px; }
  p  { font-size: 15px; }
  .three-container { height: 220px; }
  .tabs-nav {
    display: grid; grid-template-columns: 1fr 1fr; gap: 3px;
    overflow-x: visible; flex-wrap: unset; border-bottom: none;
  }
  .tab-btn {
    padding: 10px 8px; white-space: normal; font-size: 9.5px;
    line-height: 1.3; text-align: center; border-bottom: none;
    background: var(--paper); border: 1px solid var(--rule);
  }
  .tab-btn.active { border: 1px solid var(--blue); }
  .tab-btn { margin-bottom: 0; }
  .tabs-wrap::after { display: none; }
  .subtabs { overflow-x: auto; scrollbar-width: none; }
  .subtabs::-webkit-scrollbar { display: none; }
  .subtab-btn { white-space: nowrap; }
  .dsgn-title { font-size: 22px; }
  .dsgn-spice { font-size: 10px; }
  .ic-3d-legend { gap: 6px 12px; padding: 8px 12px; }
  .ic-3d-legend-item { font-size: 9px; }
  .acdc-info-tip, .dm-warn-tooltip { width: min(260px, calc(100vw - 24px)); }
}
.eyebrow {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--blue);
  display: flex; align-items: center; gap: 10px; margin-bottom: 20px;
  flex-wrap: wrap; row-gap: 10px;
}
.eyebrow::before { content: ''; width: 28px; height: 1px; background: var(--blue); flex-shrink: 0; }
.eyebrow > span { flex: 1; min-width: 0; }

.back-home-link {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--mono); font-size: 11px; color: var(--muted);
  text-decoration: none; margin-bottom: 18px; transition: color 0.15s ease;
}
.back-home-link:hover { color: var(--blue); }
h1 {
  font-family: var(--serif); font-size: clamp(42px, 6vw, 68px);
  font-weight: 700; line-height: 1.05; color: var(--ink); margin-bottom: 8px;
}
h1 em { font-style: italic; color: var(--blue); }
.header-rule { border: none; border-top: 2px solid var(--ink); margin: 28px 0 0; }
.section { margin-top: 56px; opacity: 0; transform: translateY(16px); transition: opacity .55s ease, transform .55s ease; }
.section.in { opacity: 1; transform: none; }
.section-tag {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.2em;
  text-transform: uppercase; color: var(--muted); margin-bottom: 18px;
  display: flex; align-items: center; gap: 10px;
}
.section-tag::after { content: ''; flex: 1; height: 1px; background: var(--rule); }
h2 { font-family: var(--serif); font-size: 30px; font-weight: 700; line-height: 1.15; color: var(--ink); margin-bottom: 20px; }
p { color: var(--ink2); font-size: 16px; line-height: 1.75; max-width: 680px; margin-bottom: 16px; }
@media (min-width: 1100px) {
  p { max-width: none; font-size: 17px; line-height: 1.8; }
}
p:last-child { margin-bottom: 0; }
.callout {
  border-left: 3px solid var(--blue); background: var(--blue-l);
  padding: 20px 24px; border-radius: 0 4px 4px 0; margin: 28px 0;
  max-width: 680px;
}
.callout p { color: var(--ink); font-size: 17px; font-weight: 500; margin: 0; line-height: 1.6; max-width: 100%; }
@media (min-width: 1100px) {
  .callout { max-width: none; }
  .callout p { font-size: 18px; }
}

/* ── DIAGRAMA ── */
.cap-diagram {
  margin: 32px 0; background: var(--paper);
  border: 1px solid var(--rule); border-radius: 6px;
  padding: 28px 28px 20px; overflow: hidden;
}

/* Canvas principal */
#capCanvas {
  display: block;
  width: 100%;
  border-radius: 4px;
}

/* Controles */
.controls {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 16px;
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--rule);
}
@media (max-width: 580px) { .controls { grid-template-columns: 1fr; } }

.ctrl-group { display: flex; flex-direction: column; gap: 6px; }
.ctrl-label {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--muted);
  display: flex; justify-content: space-between; align-items: center;
}
.ctrl-label strong { color: var(--orange); font-weight: 600; font-size: 12px; }
input[type=range] { width: 100%; accent-color: var(--blue); cursor: pointer; }

.state-btns { display: flex; gap: 8px; }
button {
  flex: 1; font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em;
  text-transform: uppercase; padding: 8px 10px;
  border: 1px solid var(--blue); background: transparent;
  color: var(--blue); border-radius: 3px; cursor: pointer;
  transition: background .15s, color .15s;
}
button:hover { background: var(--blue-l); }
button.active { background: var(--blue); color: #fff; }

.cap-readout {
  font-family: var(--mono); font-size: 22px; color: var(--orange);
  font-weight: 500; margin-top: 2px;
}
.cap-sub { font-family: var(--mono); font-size: 10px; color: var(--muted); margin-top: 2px; }

/* ── FÓRMULA ── */
.formula-block {
  background: var(--paper); border: 1px solid var(--rule);
  border-top: 3px solid var(--orange); border-radius: 0 0 4px 4px;
  padding: 28px 32px; margin: 28px 0;
  display: flex; align-items: center; gap: 40px; flex-wrap: wrap;
}
.formula-eq { font-family: var(--mono); font-size: 26px; color: var(--orange); white-space: nowrap; }
.formula-vars { display: flex; flex-direction: column; gap: 6px; flex: 1; min-width: 200px; }
.var-row { display: flex; align-items: baseline; gap: 10px; font-size: 13px; }
.var-sym { font-family: var(--mono); color: var(--orange); font-size: 14px; width: 32px; flex-shrink: 0; }
.var-desc { color: var(--ink2); }

/* ── ANALOGÍA ── */
.analogy-box { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 28px; }
@media (max-width: 600px) { .analogy-box { grid-template-columns: 1fr; } }
.analogy-card { background: var(--paper); border: 1px solid var(--rule); border-radius: 4px; padding: 20px 22px; }
.analogy-card .label { font-family: var(--mono); font-size: 10px; letter-spacing: 0.15em; text-transform: uppercase; color: var(--muted); margin-bottom: 8px; }
.analogy-card .value { font-family: var(--serif); font-size: 18px; font-weight: 700; color: var(--ink); margin-bottom: 6px; }
.analogy-card .desc { font-size: 13px; color: var(--muted); line-height: 1.55; }

.chip-note {
  margin-top: 40px; background: var(--orange-l); border-left: 3px solid var(--orange);
  padding: 18px 22px; border-radius: 0 4px 4px 0; font-size: 14px;
  color: var(--ink2); line-height: 1.65;
}
.chip-note strong { color: var(--orange); font-weight: 600; }
/* ── PESTAÑAS ── */
.tabs-wrap { position: relative; margin-top: 48px; }
.tabs-nav {
  display: flex; gap: 0;
  border-bottom: 2px solid var(--ink);
}
.tab-btn {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em;
  text-transform: uppercase; padding: 10px 22px;
  border: none; background: transparent; cursor: pointer;
  color: var(--muted); border-bottom: 2px solid transparent;
  margin-bottom: -2px; transition: color .15s;
}
.tab-btn:hover { color: var(--ink); }
.tab-btn.active { background: var(--blue); color: #fff; border-bottom: 2px solid var(--blue); font-weight: 700; border-radius: 3px 3px 0 0; }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ── TARJETAS CONDENSADOR PCB ── */
.pcb-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
  margin-top: 28px;
}
@media (min-width: 1400px) {
  .pcb-grid { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 24px; }
}
@media (max-width: 460px) {
  .pcb-grid { grid-template-columns: 1fr; }
}
.pcb-card {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 5px;
  transition: box-shadow .2s;
}
.pcb-card:hover { box-shadow: 0 4px 16px rgba(0,0,0,0.07); }
.pcb-card .three-container { border-radius: 5px 5px 0 0; overflow: hidden; }

/* Toggle radial/axial dentro de la tarjeta THT */
.tht-toggle {
  position: absolute; top: 10px; right: 10px; z-index: 5;
  display: flex; gap: 4px;
}
.tht-toggle-btn {
  flex: none; font-family: var(--mono); font-size: 9px; letter-spacing: 0.1em;
  text-transform: uppercase; padding: 4px 12px;
  border: 1px solid var(--rule); background: var(--paper);
  border-radius: 3px; cursor: pointer; color: var(--muted);
  transition: all .15s;
}
.tht-toggle-btn.active { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.pcb-card .pcb-svg {
  display: block; width: 100%;
  height: auto;
  background: #faf7f2;
  border-bottom: 1px solid var(--rule);
  border-radius: 5px 5px 0 0;
}
.pcb-card-body { padding: 20px 20px 18px; }
.pcb-type {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--muted); margin-bottom: 6px;
}
.pcb-name {
  font-family: var(--serif); font-size: 22px; font-weight: 700;
  color: var(--ink); margin-bottom: 12px; line-height: 1.1;
}
.pcb-specs {
  display: flex; flex-direction: column; gap: 5px;
  margin-bottom: 14px;
}
.spec-row {
  display: flex; align-items: baseline; gap: 8px; font-size: 13px;
}
.spec-key {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--muted); width: 68px; flex-shrink: 0;
}
.spec-val { color: var(--ink2); line-height: 1.4; }
.pcb-uses {
  border-top: 1px solid var(--rule); padding-top: 12px; margin-top: 4px;
  font-size: 12px; color: var(--muted); line-height: 1.6;
}
.pcb-uses strong { color: var(--orange); font-size: 11px; font-family: var(--mono);
  text-transform: uppercase; letter-spacing: 0.1em; display: block; margin-bottom: 4px; }
.polar-badge {
  display: inline-block; font-family: var(--mono); font-size: 10px;
  padding: 2px 8px; border-radius: 2px; margin-bottom: 10px;
}
.polar-yes { background: #fce8dc; color: var(--orange); }
.polar-no  { background: #d8f0e3; color: #1a6b3a; }

/* ── SUB-PESTAÑAS ── */
.subtabs {
  display: flex; gap: 4px;
  margin-top: 28px;
  padding: 4px;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 4px;
  width: fit-content;
}
.subtab-btn {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.12em;
  text-transform: uppercase; padding: 8px 16px;
  border: none; background: transparent; cursor: pointer;
  color: var(--muted); border-radius: 3px;
  transition: background .15s, color .15s;
}
.subtab-btn:hover { color: var(--ink); }
.subtab-btn.active { background: var(--ink); color: var(--paper); font-weight: 500; }
.subtab-panel { display: none; }
.subtab-panel.active { display: block; }

/* ── COMPARADOR ── */
.pcb-card { position: relative; }
.pcb-checkbox {
  position: absolute; top: 12px; right: 12px;
  width: 28px; height: 28px;
  background: var(--paper);
  border: 2px solid var(--rule);
  border-radius: 4px;
  cursor: pointer; z-index: 5;
  display: flex; align-items: center; justify-content: center;
  transition: all .15s;
}
.pcb-checkbox:hover { border-color: var(--blue); }
.pcb-checkbox.checked {
  background: var(--blue); border-color: var(--blue);
}
.pcb-checkbox.checked::after {
  content: '✓'; color: white; font-size: 16px; font-weight: bold;
  font-family: var(--sans);
}
.pcb-card.selected {
  outline: 2px solid var(--blue);
  outline-offset: -1px;
}

/* Barra flotante de comparación */
.compare-bar {
  position: sticky; bottom: 20px;
  background: var(--ink); color: var(--paper);
  padding: 14px 22px;
  border-radius: 6px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; flex-wrap: wrap;
  box-shadow: 0 8px 24px rgba(0,0,0,0.18);
  margin-top: 24px;
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: all .25s;
  z-index: 50;
}
.compare-bar.visible {
  opacity: 1; transform: none; pointer-events: auto;
}
.compare-count {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.1em;
}
.compare-count strong { color: #ffc070; font-size: 18px; font-weight: 500; margin-right: 4px; }
.compare-actions { display: flex; gap: 8px; }
.compare-bar button {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em;
  text-transform: uppercase; padding: 7px 14px;
  border-radius: 3px; cursor: pointer; border: 1px solid;
  transition: background .15s, color .15s;
}
.compare-bar .btn-primary {
  background: #ffc070; color: var(--ink); border-color: #ffc070;
}
.btn-primary:hover { background: #ffd590; border-color: #ffd590; }
.compare-bar .btn-ghost {
  background: transparent; color: var(--paper); border-color: rgba(255,255,255,0.3);
}
.btn-ghost:hover { background: rgba(255,255,255,0.1); }

/* Modal de comparación */
.compare-modal {
  position: fixed; inset: 0;
  background: rgba(28,28,30,0.65);
  z-index: 100;
  display: none;
  align-items: flex-start; justify-content: center;
  overflow-y: auto;
  padding: 40px 20px;
}
.compare-modal.open { display: flex; }
.compare-modal-content {
  background: var(--bg);
  max-width: 1100px; width: 100%;
  border-radius: 6px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
  animation: slideUp .3s ease;
}
@media (min-width: 1500px) { .compare-modal-content { max-width: 1400px; } }
@media (max-width: 640px)  { .compare-modal { padding: 20px 10px; } }
@keyframes slideUp {
  from { transform: translateY(20px); opacity: 0; }
  to   { transform: none; opacity: 1; }
}
.compare-modal-header {
  background: var(--ink); color: var(--paper);
  padding: 20px 28px;
  display: flex; align-items: center; justify-content: space-between;
}
.compare-modal-header h3 {
  font-family: var(--serif); font-weight: 700; font-size: 22px;
  margin: 0; line-height: 1.2;
}
.compare-modal-close {
  background: transparent; border: 1px solid rgba(255,255,255,0.3);
  color: var(--paper); width: 32px; height: 32px;
  border-radius: 3px; cursor: pointer; font-size: 18px;
  display: flex; align-items: center; justify-content: center;
}
.compare-modal-close:hover { background: rgba(255,255,255,0.1); }
.compare-modal-body {
  padding: 24px 28px 32px;
  overflow-x: auto;
}

/* Tabla comparativa */
.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.compare-table th, .compare-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
  text-align: left;
}
.compare-table thead th {
  background: var(--paper);
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  border-bottom: 2px solid var(--ink);
  text-align: center;
}
.compare-table thead th:first-child {
  text-align: left;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
  background: transparent;
  border-bottom: 2px solid var(--ink);
}
.compare-table tbody th {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--muted); font-weight: 500;
  background: var(--paper);
  width: 130px;
  white-space: nowrap;
}
.compare-table tbody td {
  color: var(--ink2); line-height: 1.55;
  text-align: center;
}
.compare-table tbody tr:hover td,
.compare-table tbody tr:hover th { background: rgba(26,79,214,0.04); }

/* Celda ganadora de la fila */
.compare-table tbody td.best {
  background: #dff5e6;
  box-shadow: inset 2px 0 0 #2e9e52;
  color: var(--ink); font-weight: 500;
}
.compare-table tbody tr:hover td.best { background: #d3f0dd; }

/* El "!" dentro de la cabecera de fila no hereda el uppercase ni el letter-spacing */
.compare-table tbody th .acdc-info-wrap { text-transform: none; letter-spacing: 0; }

.compare-legend {
  display: flex; align-items: flex-start; gap: 9px;
  padding: 14px 18px; border-top: 1px solid var(--rule);
  font-size: 12px; color: var(--muted); line-height: 1.55;
}
.compare-legend-swatch {
  width: 14px; height: 14px; border-radius: 3px; flex-shrink: 0; margin-top: 2px;
  background: #dff5e6; box-shadow: inset 2px 0 0 #2e9e52;
}
.compare-table .badge-yes {
  display: inline-block; padding: 2px 9px; border-radius: 3px;
  font-family: var(--mono); font-size: 11px;
  background: #fce8dc; color: var(--orange);
}
.compare-table .badge-no {
  display: inline-block; padding: 2px 9px; border-radius: 3px;
  font-family: var(--mono); font-size: 11px;
  background: #d8f0e3; color: #1a6b3a;
}
.compare-table .preview-svg {
  display: block; max-width: 140px; margin: 0 auto;
}

/* ── CONTENEDOR THREE.JS ── */
.three-container {
  position: relative;
  display: block; width: 100%;
  height: 260px;
  background: linear-gradient(180deg, #f5f0e8 0%, #ede8df 100%);
  border-bottom: 1px solid var(--rule);
  cursor: grab;
  touch-action: none;
}
.three-container:active { cursor: grabbing; }
.three-container canvas { display: block; width: 100%; height: 100%; }
.three-hint {
  position: absolute; bottom: 10px; right: 12px;
  font-family: var(--mono); font-size: 9px; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--muted);
  background: rgba(250,247,242,0.85);
  padding: 3px 8px; border-radius: 2px;
  pointer-events: none;
  opacity: 0.8;
}
.three-badge {
  position: absolute; top: 10px; left: 12px;
  font-family: var(--mono); font-size: 9px; letter-spacing: 0.1em;
  text-transform: uppercase;
  background: var(--blue); color: white;
  padding: 3px 8px; border-radius: 2px;
}

/* ── BOTÓN CORTE TRANSVERSAL ── */
.three-cut-btn {
  position: absolute; bottom: 10px; left: 12px;
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.1em;
  text-transform: uppercase; padding: 5px 12px;
  background: var(--paper); color: var(--blue);
  border: 1px solid var(--blue); border-radius: 3px;
  cursor: pointer; transition: all .15s; z-index: 10;
}
.three-cut-btn:hover { background: var(--blue); color: white; }
.three-cut-btn.active { background: var(--orange); color: white; border-color: var(--orange); }

/* ── AC/DC info tooltips ── */
.acdc-info-wrap { position: relative; display: inline-block; vertical-align: middle; margin-left: 6px; }
.acdc-info-btn {
  flex: none; width: 18px; height: 18px; border-radius: 50%;
  font-size: 11px; font-weight: 700; line-height: 1; padding: 0;
  border: 1px solid var(--orange); color: var(--orange);
  background: var(--orange-l); cursor: pointer;
  font-family: var(--mono); text-transform: none;
  display: inline-flex; align-items: center; justify-content: center;
  transition: all .15s;
}
.acdc-info-btn:hover { background: var(--orange); color: white; }
.acdc-info-tip {
  display: none; position: fixed;      /* fixed + JS: nunca se recorta */
  background: var(--ink); color: var(--paper);
  font-family: var(--sans); font-size: 12px; font-weight: 400;
  line-height: 1.6; padding: 12px 14px; border-radius: 5px;
  width: 280px; max-width: calc(100vw - 24px);
  text-align: left; z-index: 300;
  box-shadow: 0 4px 20px rgba(0,0,0,0.25);
  white-space: normal; letter-spacing: 0; text-transform: none;
}
.acdc-info-tip em { color: #7fd0ff; font-style: normal; font-family: var(--mono); }
.acdc-info-tip.show { display: block; }

/* ── Language Popup (ask on entry) + switcher ── */
.lang-overlay {
  position: fixed; inset: 0; background: rgba(28,28,30,0.6);
  z-index: 9999; display: none;
  align-items: center; justify-content: center; backdrop-filter: blur(4px);
}
.lang-overlay.visible { display: flex; animation: langFadeIn 0.3s ease; }
@keyframes langFadeIn { from { opacity: 0; } to { opacity: 1; } }
.lang-popup {
  background: var(--paper); border: 1px solid var(--rule); border-radius: 6px;
  padding: 44px 50px; text-align: center; box-shadow: 0 30px 80px rgba(0,0,0,0.25);
  max-width: 460px; width: 90%; animation: langPopupIn 0.4s cubic-bezier(0.34,1.56,0.64,1);
}
@keyframes langPopupIn { from { opacity: 0; transform: scale(0.85); } to { opacity: 1; transform: scale(1); } }
.lang-popup h2 { font-family: var(--serif); font-size: 1.5rem; color: var(--ink); margin-bottom: 8px; }
.lang-popup p { font-size: 0.85rem; color: var(--muted); margin-bottom: 26px; line-height: 1.6; }
.lang-popup-buttons { display: flex; gap: 12px; justify-content: center; }
.lang-popup-btn {
  flex: 1; padding: 14px 10px; border: 1.5px solid var(--rule); border-radius: 5px;
  background: var(--bg); cursor: pointer; font-family: var(--mono);
  font-size: 0.75rem; font-weight: 600; letter-spacing: 0.03em; transition: all 0.2s ease;
}
.lang-popup-btn:hover { border-color: var(--blue); color: var(--blue); transform: translateY(-2px); }

.lang-switcher {
  display: flex; gap: 4px; flex-shrink: 0;
  border: 1px solid var(--rule); border-radius: 4px; overflow: hidden;
}
.lang-switcher button {
  background: transparent; border: none; padding: 5px 10px; cursor: pointer;
  font-family: var(--mono); font-size: 11px; font-weight: 600; color: var(--muted);
  border-right: 1px solid var(--rule); transition: all 0.15s ease;
}
.lang-switcher button:last-child { border-right: none; }
.lang-switcher button:hover { color: var(--blue); background: var(--blue-l); }
.lang-switcher button.active { background: var(--ink); color: var(--paper); }

.dsgn-update-btn {
  flex-shrink: 0; padding: 6px 12px; border: 1px solid var(--rule); border-radius: 4px;
  background: var(--paper); color: var(--ink2); cursor: pointer;
  font-family: var(--mono); font-size: 10.5px; font-weight: 600; letter-spacing: 0.02em;
  transition: all 0.15s ease;
}
.dsgn-update-btn:hover { border-color: var(--blue); color: var(--blue); }
.dsgn-update-btn.pending {
  background: var(--orange); color: #fff; border-color: var(--orange);
  animation: dsgnPendingPulse 1.4s ease-in-out infinite;
}
@keyframes dsgnPendingPulse { 0%,100% { opacity: 1; } 50% { opacity: 0.68; } }

/* Reafirmado al final del stylesheet: en CSS, a igual especificidad gana la
   regla que aparece mas tarde en el archivo, y esta regla de movil estaba
   antes que la base .tabs-nav / .tab-btn.active — por eso no se aplicaba
   nunca aunque el media query sí se cumpliera. */
@media (max-width: 640px) {
  .tabs-nav {
    display: grid; grid-template-columns: 1fr 1fr; gap: 3px;
    overflow-x: visible; flex-wrap: unset; border-bottom: none;
  }
  .tab-btn {
    padding: 10px 8px; white-space: normal; font-size: 9.5px;
    line-height: 1.3; text-align: center; border-bottom: none;
    background: var(--paper); border: 1px solid var(--rule); margin-bottom: 0;
  }
  .tab-btn.active { background: var(--blue); color: #fff; border: 1px solid var(--blue); }
  .tabs-wrap::after { display: none; }
}