/* =====================================================================
   Gramática Viva Montessori — styles.css
   Paleta y criterios visuales tomados de "Guía visual del MVP".
   PARA CAMBIAR COLORES: edita las variables dentro de :root.
   ===================================================================== */

:root {
  --bg: #f7f2e8;
  --text: #2f2a24;
  --primary: #1b365d;
  --primary-light: #2c4a7c;
  --accent: #f5c400;
  --border: #d8cdbe;
  --success: #2e7d32;
  --review: #b45309;
  --error-soft: #fbecec;
  --info-bg: #e9f0f8;
  --card-bg: #fffdf8;

  /* Colores de símbolos gramaticales (fieles a la guía visual) */
  --c-articulo: #69b9e7;
  --c-sustantivo: #111111;
  --c-adjetivo: #1769c2;
  --c-verbo: #d62828;
  --c-adverbio: #f28c28;
  --c-pronombre: #7b3fa1;
  --c-preposicion: #178b5b;
  --c-conjuncion: #e76aa6;
  --c-interjeccion: #b69a45;

  --radius: 18px;
  --shadow-soft: 0 6px 16px rgba(47, 42, 36, 0.08);
  --font-main: "Atkinson Hyperlegible", "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-display: "Inter", "Atkinson Hyperlegible", system-ui, -apple-system, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.5;
  min-height: 100vh;
}

h1, h2, h3 { font-family: var(--font-display); color: var(--primary); margin: 0 0 8px; }

button { font-family: inherit; cursor: pointer; }

:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 2px;
}

/* ================= HEADER ================= */
.app-header {
  background: var(--card-bg);
  border-bottom: 2px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 20;
}
.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 10px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  background: none;
  border: none;
  padding: 4px;
  border-radius: 10px;
}
.brand-logo { height: 34px; width: auto; display: block; }
.brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--primary);
}
.brand-name em { font-style: normal; color: var(--review); }

.main-nav { display: flex; gap: 8px; flex-wrap: wrap; }
.nav-btn {
  background: transparent;
  border: 2px solid transparent;
  color: var(--primary);
  font-weight: 600;
  padding: 8px 14px;
  border-radius: 12px;
  font-size: 0.92rem;
}
.nav-btn:hover, .nav-btn.active {
  border-color: var(--primary);
  background: var(--info-bg);
}

/* ================= LAYOUT / SCREENS ================= */
#app-root { max-width: 1140px; margin: 0 auto; padding: 24px 20px 60px; }
.screen { display: none; }
.screen.active { display: block; animation: fade-in .18s ease; }
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }

.screen-header { margin-bottom: 20px; text-align: center; }
.screen-sub { color: #5b5346; max-width: 640px; margin: 0 auto; }

/* ================= HOME ================= */
.home-hero { text-align: center; padding: 32px 12px 12px; }
.home-symbols {
  display: flex;
  justify-content: center;
  align-items: flex-end;
  gap: 18px;
  margin-bottom: 18px;
}
.hero-shape { display: inline-block; }
.home-hero h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); }
.home-lead {
  max-width: 620px;
  margin: 0 auto 28px;
  color: #5b5346;
  font-size: 1.05rem;
}
.home-actions {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  max-width: 900px;
  margin: 0 auto;
}
@media (max-width: 760px) {
  .home-actions { grid-template-columns: 1fr; }
}
.card-btn {
  background: var(--card-bg);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  padding: 22px 18px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  transition: transform .15s ease, border-color .15s ease;
  text-align: center;
}
.card-btn:hover { transform: translateY(-3px); border-color: var(--primary); }
.card-btn-title { font-weight: 700; color: var(--primary); font-size: 1.05rem; }
.card-btn-desc { font-size: 0.88rem; color: #5b5346; }

.link-btn {
  margin-top: 26px;
  background: none;
  border: none;
  color: #8a7f6c;
  text-decoration: underline;
  font-size: 0.85rem;
}

/* ================= SHAPES (símbolos gramaticales) =================
   Se generan con CSS puro; --c define el color y --s el tamaño. */
.shape-triangle {
  width: 0; height: 0;
  border-left: calc(var(--s) / 2) solid transparent;
  border-right: calc(var(--s) / 2) solid transparent;
  border-bottom: var(--s) solid var(--c);
}
.shape-circle {
  width: var(--s); height: var(--s);
  border-radius: 50%;
  background: var(--c);
}
.shape-arc {
  width: var(--s); height: calc(var(--s) / 2);
  border: calc(var(--s) / 6) solid var(--c);
  border-bottom: none;
  border-radius: var(--s) var(--s) 0 0;
  background: transparent;
}
.shape-rect {
  width: var(--s); height: calc(var(--s) * 0.55);
  background: var(--c);
  border-radius: 6px;
}
.shape-interjeccion {
  position: relative;
  width: var(--s);
  height: calc(var(--s) * 1.12);
  display: inline-block;
}
.shape-interjeccion::before {
  content: "";
  position: absolute;
  top: 0;
  left: calc(var(--s) * 0.18);
  width: calc(var(--s) * 0.64);
  height: calc(var(--s) * 0.64);
  border-radius: 50%;
  background: var(--c);
  z-index: 2;
}
.shape-interjeccion::after {
  content: "";
  position: absolute;
  left: calc(var(--s) * 0.08);
  bottom: 0;
  width: calc(var(--s) * 0.84);
  height: calc(var(--s) * 0.68);
  background: var(--c);
  clip-path: polygon(38% 0, 62% 0, 100% 100%, 0 100%);
  z-index: 1;
}

/* ================= MÓDULO 1: SÍMBOLOS ================= */
.symbols-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 16px;
}
.symbol-card {
  background: var(--card-bg);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  padding: 18px;
  text-align: left;
}
.symbol-card-head {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  background: none;
  border: none;
  padding: 0;
  text-align: left;
}
.symbol-card-icon { flex-shrink: 0; display: flex; align-items: center; justify-content: center; width: 56px; }
.symbol-card-title { font-weight: 700; color: var(--primary); font-size: 1.1rem; }
.symbol-card-def { font-size: 0.9rem; color: #5b5346; margin-top: 2px; }
.symbol-card-toggle {
  margin-left: auto;
  border: none;
  background: var(--info-bg);
  color: var(--primary);
  border-radius: 50%;
  width: 30px; height: 30px;
  font-weight: 700;
  flex-shrink: 0;
}
.symbol-card-body {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed var(--border);
  display: none;
  font-size: 0.92rem;
}
.symbol-card.expanded .symbol-card-body { display: block; }
.symbol-card-body p { margin: 6px 0; }
.symbol-card-body .label { font-weight: 700; color: var(--primary); }
.symbol-card-examples span {
  display: inline-block;
  background: var(--info-bg);
  color: var(--primary);
  border-radius: 8px;
  padding: 2px 8px;
  margin: 3px 4px 0 0;
  font-size: 0.85rem;
}
.btn-practicar {
  margin-top: 12px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 10px;
  padding: 8px 14px;
  font-weight: 600;
  font-size: 0.85rem;
}

/* ================= TOOLBAR ================= */
.toolbar {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 14px;
  background: var(--card-bg);
  border: 2px solid var(--border);
  border-radius: 14px;
  padding: 10px 16px;
}
.toolbar-group { display: flex; align-items: center; gap: 8px; }
.toolbar-group label { font-weight: 600; font-size: 0.9rem; }
.toolbar select {
  border: 2px solid var(--border);
  border-radius: 8px;
  padding: 6px 10px;
  font-family: inherit;
  font-size: 0.9rem;
  background: #fff;
  color: var(--text);
}
.explore-toggle { display: flex; align-items: center; gap: 8px; font-size: 0.9rem; font-weight: 600; }
.explore-toggle input { width: 18px; height: 18px; }
.toolbar-counter { margin-left: auto; font-weight: 700; color: var(--primary); font-size: 0.9rem; }

.progress-bar-track {
  height: 8px;
  background: var(--border);
  border-radius: 6px;
  overflow: hidden;
  margin-bottom: 22px;
}
.progress-bar-fill {
  height: 100%;
  background: var(--accent);
  width: 0%;
  transition: width .25s ease;
}

/* ================= SENTENCE / WORD CARDS ================= */
.sentence-card {
  background: var(--info-bg);
  border-radius: var(--radius);
  padding: 16px 20px;
  text-align: center;
  margin-bottom: 20px;
}
.sentence-text { font-size: 1.25rem; font-weight: 600; color: var(--primary); margin: 0; }

.consigna-text {
  text-align: center;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--primary);
  background: var(--info-bg);
  border-radius: var(--radius);
  padding: 14px 18px;
  margin-bottom: 16px;
}

.word-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-bottom: 20px;
}
.word-card {
  background: var(--card-bg);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  min-height: 76px;
  min-width: 92px;
  padding: 10px 14px;
  box-shadow: var(--shadow-soft);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: border-color .15s ease, transform .12s ease;
}
.word-card .word-symbol-slot {
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.word-card .word-text { font-size: 1.15rem; font-weight: 600; }
.word-card.selected-target { border-color: var(--primary); transform: scale(1.03); }
.word-card.state-pendiente { border-color: var(--border); }
.word-card.state-asignado { border-color: var(--primary); background: #fdfaf2; }
.word-card.state-correcto { border-color: var(--success); background: #f2f8f2; }
.word-card.state-revisar { border-color: var(--review); background: var(--error-soft); }
.word-card .word-status-text {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .02em;
}
.word-card.state-correcto .word-status-text { color: var(--success); }
.word-card.state-revisar .word-status-text { color: var(--review); }

.word-explanation {
  font-size: 0.78rem;
  color: #5b5346;
  max-width: 160px;
  text-align: center;
  margin-top: 2px;
}

/* ================= FEEDBACK ================= */
.feedback-panel {
  min-height: 0;
  margin-bottom: 16px;
}
.feedback-msg {
  border-radius: 12px;
  padding: 12px 16px;
  font-size: 0.95rem;
  margin-bottom: 8px;
}
.feedback-msg.ok { background: #f2f8f2; border: 2px solid var(--success); color: #1c4a1e; }
.feedback-msg.review { background: var(--error-soft); border: 2px solid var(--review); color: #7a3a08; }
.feedback-msg.info { background: var(--info-bg); border: 2px solid #9db8d8; color: var(--primary); }

/* ================= SYMBOL TRAY ================= */
.symbol-tray {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  background: var(--card-bg);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 20px;
}
.symbol-token {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-width: 76px;
  min-height: 76px;
  border-radius: 16px;
  background: #fffdf8;
  border: 2px solid transparent;
  padding: 8px 10px;
  transition: transform .12s ease, border-color .12s ease;
}
.symbol-token:hover { border-color: var(--border); }
.symbol-token.selected { border-color: var(--primary); transform: scale(1.08); background: var(--info-bg); }
.symbol-token .token-icon { display: flex; align-items: center; justify-content: center; height: 34px; }
.symbol-token .token-label { font-size: 0.72rem; font-weight: 700; color: var(--text); text-align: center; }
.symbol-token[draggable="true"] { cursor: grab; }

/* ================= BUTTONS ================= */
.action-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-top: 10px;
}
.btn {
  border-radius: 12px;
  padding: 12px 20px;
  font-weight: 700;
  font-size: 0.92rem;
  border: 2px solid transparent;
  min-height: 46px;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-light); }
.btn-secondary { background: #fff; color: var(--primary); border-color: var(--primary); }
.btn-secondary:hover { background: var(--info-bg); }
.btn-warning { background: #fff8e1; color: #8a5b00; border-color: var(--accent); }
.btn-warning:hover { background: #fff1c2; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

/* ================= MÓDULO 3: CONSTRUIR ================= */
.structure-row {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}
.structure-chip {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  background: var(--card-bg);
  border: 2px solid var(--border);
  border-radius: 14px;
  padding: 8px 12px;
  min-width: 70px;
}
.structure-chip .token-label { font-size: 0.68rem; font-weight: 700; }

.build-slots {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 16px;
}
.build-slot {
  min-width: 110px;
  min-height: 76px;
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  background: var(--card-bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 8px;
  transition: border-color .15s ease;
}
.build-slot .slot-hint { font-size: 0.68rem; color: #8a7f6c; font-weight: 700; text-transform: uppercase; }
.build-slot .slot-word { font-size: 1.1rem; font-weight: 700; color: var(--primary); }
.build-slot.filled { border-style: solid; border-color: var(--primary); }
.build-slot.slot-active { border-color: var(--accent); border-style: solid; box-shadow: 0 0 0 3px rgba(245,196,0,.25); }
.build-slot .slot-remove {
  border: none; background: none; color: #b45309; font-size: 0.7rem; font-weight: 700; text-decoration: underline; padding: 2px;
}

.built-sentence-preview {
  text-align: center;
  font-style: italic;
  color: #5b5346;
  min-height: 24px;
  margin-bottom: 14px;
}

.word-bank {
  background: var(--card-bg);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}
.word-bank-group { margin-bottom: 14px; }
.word-bank-group:last-child { margin-bottom: 0; }
.word-bank-group-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 0.85rem;
  margin-bottom: 8px;
  color: var(--primary);
}
.word-bank-words { display: flex; flex-wrap: wrap; gap: 8px; }
.word-bank-word {
  background: #fff;
  border: 2px solid var(--border);
  border-radius: 10px;
  padding: 8px 12px;
  font-size: 0.95rem;
  font-weight: 600;
  min-height: 44px;
}
.word-bank-word:hover { border-color: var(--primary); background: var(--info-bg); }
.word-bank-word[draggable="true"] { cursor: grab; }

/* ================= FOOTER ================= */
.app-footer {
  text-align: center;
  padding: 18px;
  color: #8a7f6c;
  font-size: 0.8rem;
}

/* ================= RESPONSIVE ================= */
@media (max-width: 640px) {
  .header-inner { flex-direction: column; align-items: flex-start; }
  .main-nav { width: 100%; justify-content: space-between; }
  .nav-btn { flex: 1; font-size: 0.78rem; padding: 8px 6px; }
  .toolbar-counter { width: 100%; margin-left: 0; text-align: right; }
  .word-row { gap: 10px; }
  .action-bar .btn { flex: 1 1 45%; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}

/* =====================================================================
   VERSIÓN AMPLIADA — navegación, escritura libre y motor local
   ===================================================================== */

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 100;
  transform: translateY(-160%);
  background: var(--primary);
  color: #fff;
  padding: 10px 14px;
  border-radius: 10px;
  font-weight: 700;
}
.skip-link:focus { transform: translateY(0); }

.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.brand-mark {
  position: relative;
  width: 43px;
  height: 38px;
  flex: 0 0 43px;
}
.brand-mark-noun {
  position: absolute;
  left: 1px;
  bottom: 3px;
  width: 0;
  height: 0;
  border-left: 16px solid transparent;
  border-right: 16px solid transparent;
  border-bottom: 30px solid #111;
}
.brand-mark-verb {
  position: absolute;
  right: 1px;
  top: 1px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--c-verbo);
  box-shadow: 0 0 0 3px var(--card-bg);
}
.brand-copy { display: flex; flex-direction: column; align-items: flex-start; line-height: 1.05; }
.brand-name { font-size: 1.05rem; }
.brand-by { margin-top: 5px; color: #766c5e; font-size: 0.68rem; font-weight: 650; letter-spacing: .025em; }
.nav-btn { display: inline-flex; align-items: center; gap: 7px; }
.nav-btn > span {
  display: inline-grid;
  place-items: center;
  width: 21px;
  height: 21px;
  border-radius: 50%;
  background: var(--info-bg);
  color: var(--primary);
  font-size: .7rem;
}
.nav-btn.active > span { background: var(--primary); color: #fff; }

.offline-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-bottom: 22px;
  padding: 6px 11px;
  border: 1px solid #b8d9c9;
  border-radius: 999px;
  background: #edf8f2;
  color: #276446;
  font-size: .76rem;
  font-weight: 700;
}
.offline-badge > span { color: #2e9a67; font-size: .65rem; }
.eyebrow, .step-kicker {
  margin: 0 0 5px;
  color: var(--review);
  font-size: .74rem;
  font-weight: 800;
  letter-spacing: .11em;
  text-transform: uppercase;
}
.home-hero h1 { max-width: 760px; margin: 0 auto 10px; }
.home-lead { max-width: 720px; }

.learning-route {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  max-width: 1040px;
  margin: 10px auto 20px;
}
.route-card {
  position: relative;
  min-height: 142px;
  padding: 24px 16px 18px;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  background: var(--card-bg);
  box-shadow: var(--shadow-soft);
  color: var(--primary);
  text-align: left;
  transition: transform .16s ease, border-color .16s ease, box-shadow .16s ease;
}
.route-card::after {
  content: "→";
  position: absolute;
  right: 14px;
  bottom: 12px;
  color: #9c8f7b;
  font-weight: 800;
}
.route-card:hover { transform: translateY(-4px); border-color: var(--primary); box-shadow: 0 12px 25px rgba(47, 42, 36, .11); }
.route-card.featured { border-color: #9db8d8; background: linear-gradient(145deg, #fffdf8 35%, #eef4fb); }
.route-number {
  position: absolute;
  top: 14px;
  right: 14px;
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--info-bg);
  color: var(--primary);
  font-size: .8rem;
  font-weight: 800;
}
.route-card strong { display: block; margin: 35px 0 5px; font-size: 1.02rem; }
.route-card small { display: block; max-width: 160px; color: #6b6256; font-size: .78rem; }
.home-progress {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  max-width: 760px;
  margin: 18px auto 0;
  padding: 11px 16px;
  border-radius: 13px;
  background: rgba(255, 253, 248, .75);
  color: #62594e;
  font-size: .84rem;
}
.progress-spark { color: var(--review); font-size: 1.2rem; }

.symbol-tools {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin: 0 0 18px;
  padding: 12px;
  border: 2px solid var(--border);
  border-radius: 15px;
  background: var(--card-bg);
}
.search-field { flex: 1 1 280px; }
.search-field input {
  width: 100%;
  min-height: 43px;
  padding: 9px 13px;
  border: 2px solid var(--border);
  border-radius: 11px;
  background: #fff;
  color: var(--text);
  font: inherit;
}
.search-field input:focus { border-color: var(--primary); outline: none; box-shadow: 0 0 0 3px rgba(27, 54, 93, .12); }
.filter-pills { display: flex; flex-wrap: wrap; gap: 7px; }
.filter-pill, .mini-btn {
  min-height: 38px;
  padding: 7px 11px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: #fff;
  color: var(--primary);
  font-size: .78rem;
  font-weight: 700;
}
.filter-pill:hover, .filter-pill.active, .mini-btn:hover { border-color: var(--primary); background: var(--info-bg); }
.empty-state {
  padding: 28px;
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  color: #6b6256;
  text-align: center;
}

.selection-hint {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 35px;
  margin: -8px 0 14px;
  color: #756b5c;
  font-size: .82rem;
}
.selection-hint.has-selection { color: var(--primary); }
.selection-hint .shape-triangle { transform: scale(.75); }
.btn-quiet { background: transparent; color: #6a6155; border-color: var(--border); }
.btn-quiet:hover { background: var(--card-bg); border-color: #9d9181; }
.mini-btn { margin-left: auto; }

/* ================= ESCRITURA LIBRE ================= */
.writer-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.75fr) minmax(250px, .75fr);
  gap: 18px;
  align-items: stretch;
}
.writer-card, .engine-card, .review-card {
  border: 2px solid var(--border);
  border-radius: var(--radius);
  background: var(--card-bg);
  box-shadow: var(--shadow-soft);
}
.writer-card { padding: 20px; }
.writer-card-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; }
.writer-card-head h3, .engine-title-row h3, .results-heading h3, .review-card h3 { margin: 0; font-size: 1.03rem; }
.writer-card-head p, .engine-title-row p { margin: 2px 0 0; color: #71685b; font-size: .78rem; }
.live-toggle { display: inline-flex; align-items: center; gap: 7px; color: var(--primary); font-size: .78rem; font-weight: 750; white-space: nowrap; }
.live-toggle input { width: 18px; height: 18px; accent-color: var(--primary); }
#free-sentence {
  width: 100%;
  min-height: 144px;
  margin-top: 14px;
  padding: 15px 16px;
  resize: vertical;
  border: 2px solid var(--border);
  border-radius: 14px;
  background: #fff;
  color: var(--text);
  font: 500 1.08rem/1.6 var(--font-main);
}
#free-sentence:focus { border-color: var(--primary); outline: none; box-shadow: 0 0 0 4px rgba(27, 54, 93, .11); }
.writer-meta {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  margin-top: 6px;
  color: #776e61;
  font-size: .72rem;
}
#engine-status { color: #296648; font-weight: 750; }
#engine-status.working::before { content: ""; display: inline-block; width: 7px; height: 7px; margin-right: 5px; border-radius: 50%; background: #2e9a67; animation: engine-pulse 1s infinite; }
@keyframes engine-pulse { 50% { opacity: .3; transform: scale(.7); } }
.example-strip { display: flex; flex-wrap: wrap; align-items: center; gap: 7px; margin: 15px 0 4px; }
.example-strip > span { color: #756c5f; font-size: .72rem; font-weight: 750; }
.example-chip {
  padding: 6px 9px;
  border: 1px solid #c4d4e6;
  border-radius: 999px;
  background: var(--info-bg);
  color: var(--primary);
  font-size: .72rem;
  text-align: left;
}
.example-chip:hover { border-color: var(--primary); }
.action-bar.left { justify-content: flex-start; }

.engine-card {
  position: relative;
  overflow: hidden;
  padding: 20px;
  border-color: #aec5dc;
  background: linear-gradient(155deg, #f7fbff, #eaf2fa);
}
.engine-card::after {
  content: "";
  position: absolute;
  right: -55px;
  bottom: -55px;
  width: 150px;
  height: 150px;
  border: 28px solid rgba(27, 54, 93, .035);
  border-radius: 50%;
}
.engine-title-row { display: flex; align-items: center; gap: 11px; }
.engine-orb {
  position: relative;
  width: 38px;
  height: 38px;
  flex: 0 0 38px;
  border: 8px solid var(--primary);
  border-radius: 50%;
  box-shadow: inset 0 0 0 3px #fff, 0 0 0 3px rgba(27, 54, 93, .1);
}
.engine-orb::after { content: ""; position: absolute; width: 7px; height: 7px; top: 7px; left: 7px; border-radius: 50%; background: var(--accent); }
.engine-features { position: relative; z-index: 1; padding: 0; margin: 20px 0; list-style: none; }
.engine-features li { position: relative; margin: 0 0 11px; padding-left: 22px; color: #465a72; font-size: .82rem; }
.engine-features li::before { content: "✓"; position: absolute; left: 0; color: #2e7d52; font-weight: 900; }
.privacy-note { position: relative; z-index: 1; margin: 18px 0 0; padding-top: 14px; border-top: 1px solid #c7d6e6; color: #5d6c7c; font-size: .7rem; }

.free-results { margin-top: 24px; }
.results-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 18px; margin-bottom: 8px; }
.confidence-legend { display: flex; flex-wrap: wrap; gap: 6px; }
.confidence {
  display: inline-flex;
  align-items: center;
  padding: 3px 7px;
  border-radius: 999px;
  font-size: .66rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .03em;
}
.confidence.high { background: #e2f3e8; color: #23613d; }
.confidence.medium { background: #fff3d1; color: #795600; }
.confidence.low { background: #f9dfdc; color: #8b3028; }
.result-instruction { margin: 0 0 13px; color: #6f665a; font-size: .82rem; }
.analyzed-sentence {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: center;
  gap: 10px;
  min-height: 145px;
  padding: 22px 16px;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
}
.analyzed-token {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  gap: 5px;
  min-width: 78px;
  min-height: 98px;
  padding: 8px 9px 10px;
  border: 2px solid transparent;
  border-radius: 14px;
  background: #fffdf8;
  color: var(--text);
  transition: transform .14s ease, border-color .14s ease, background .14s ease;
}
.analyzed-token:hover, .analyzed-token.selected { transform: translateY(-3px); border-color: var(--primary); background: var(--info-bg); }
.analyzed-token.confidence-low { border-style: dashed; border-color: #c86b61; background: #fff8f7; }
.analyzed-token.spelling-warning { border-color: #b85a4f; background: #fff6f4; }
.spelling-flag { position: absolute; top: 5px; left: 6px; padding: 2px 4px; border-radius: 5px; background: #f4d8d4; color: #8e342b; font-size: .54rem; font-weight: 900; }
.analyzed-shape { display: flex; align-items: flex-end; justify-content: center; height: 32px; }
.analyzed-word { font-size: 1rem; font-weight: 750; }
.analyzed-category { color: #71685c; font-size: .63rem; font-weight: 700; }
.confidence-dot { position: absolute; top: 7px; right: 7px; width: 7px; height: 7px; border-radius: 50%; }
.confidence-high .confidence-dot { background: #3b9b64; }
.confidence-medium .confidence-dot { background: #d59b16; }
.confidence-low .confidence-dot { background: #bf4f45; }
.punctuation-token { align-self: flex-end; margin: 0 -7px 16px -7px; color: var(--primary); font-size: 1.35rem; font-weight: 800; }

.token-inspector {
  margin-top: 12px;
  padding: 17px 18px;
  border: 2px solid #9db8d8;
  border-radius: 16px;
  background: var(--info-bg);
}
.inspector-summary { display: flex; align-items: center; gap: 13px; }
.inspector-shape { display: flex; align-items: center; justify-content: center; min-width: 52px; }
.inspector-summary p { margin: 2px 0; }
.inspector-word { color: var(--primary); font-size: 1.1rem; font-weight: 800; }
.inspector-close { margin-left: auto; align-self: flex-start; width: 33px; height: 33px; border: 1px solid #9db8d8; border-radius: 50%; background: #fff; color: var(--primary); font-size: 1.3rem; line-height: 1; }
.inspector-reason { margin: 13px 0 7px; color: #3e5269; font-size: .88rem; }
.inspector-spelling { display: flex; flex-wrap: wrap; gap: 4px 9px; margin: 10px 0; padding: 9px 11px; border-left: 4px solid #b85a4f; border-radius: 0 9px 9px 0; background: #fff3f1; color: #74352f; font-size: .76rem; }
.alternative-note { margin: 5px 0 13px; color: #5f6e7d; font-size: .75rem; }
.classification-fieldset { margin: 12px 0 0; padding: 13px 0 0; border: 0; border-top: 1px solid #b9cadc; }
.classification-fieldset legend { padding: 0 6px 0 0; color: var(--primary); font-size: .78rem; font-weight: 750; }
.classification-options { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 9px; }
.classification-option {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 38px;
  padding: 7px 9px;
  border: 1px solid #b6c7da;
  border-radius: 10px;
  background: #fff;
  color: var(--primary);
  font-size: .7rem;
  font-weight: 700;
}
.classification-option:hover, .classification-option.active { border-color: var(--primary); box-shadow: 0 0 0 2px rgba(27, 54, 93, .11); }
.classification-option .shape-triangle, .classification-option .shape-circle, .classification-option .shape-arc, .classification-option .shape-rect, .classification-option .shape-interjeccion { flex: 0 0 auto; }
.remember-choice { display: flex; align-items: center; gap: 7px; margin-top: 12px; color: #52657a; font-size: .72rem; }
.remember-choice input { width: 17px; height: 17px; accent-color: var(--primary); }

.review-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 18px; margin-top: 18px; }
.review-card { padding: 18px; box-shadow: none; }
.detected-structure { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 15px; }
.detected-chip { display: inline-flex; flex-direction: column; align-items: center; gap: 4px; min-width: 72px; padding: 7px 8px; border: 1px solid var(--border); border-radius: 11px; background: #fff; }
.detected-chip > span { color: #675f54; font-size: .62rem; font-weight: 700; }
.structure-arrow { color: #aa9e8d; font-size: 1.15rem; }
.diagnostic-list { display: grid; gap: 8px; margin-top: 13px; }
.diagnostic-item { display: grid; grid-template-columns: 27px 1fr; gap: 9px; align-items: start; padding: 9px 10px; border-radius: 10px; }
.diagnostic-item.ok { background: #edf7f1; color: #285c3d; }
.diagnostic-item.warn { background: #fff4df; color: #79500e; }
.diagnostic-item.info { background: #eef4fa; color: #38536f; }
.diagnostic-icon { display: grid; place-items: center; width: 23px; height: 23px; border: 1px solid currentColor; border-radius: 50%; font-size: .72rem; font-weight: 900; }
.diagnostic-item strong { display: block; font-size: .78rem; }
.diagnostic-item small { display: block; margin-top: 2px; color: inherit; font-size: .7rem; line-height: 1.35; opacity: .88; }
.teacher-note { margin-top: 16px; padding: 12px 15px; border-left: 4px solid var(--accent); border-radius: 0 10px 10px 0; background: #fff9e9; color: #6d5923; font-size: .78rem; }

.history-panel { margin-top: 22px; border: 2px solid var(--border); border-radius: 14px; background: var(--card-bg); }
.history-panel summary { padding: 13px 16px; color: var(--primary); font-size: .82rem; font-weight: 750; cursor: pointer; }
#review-history { padding: 0 14px 14px; }
.history-list { display: grid; gap: 7px; }
.history-item { display: flex; justify-content: space-between; align-items: center; gap: 14px; width: 100%; padding: 9px 11px; border: 1px solid var(--border); border-radius: 10px; background: #fff; color: var(--text); text-align: left; }
.history-item span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: .8rem; }
.history-item small { flex: 0 0 auto; color: var(--primary); font-size: .68rem; font-weight: 750; }
.history-item:hover { border-color: var(--primary); }
.history-empty { margin: 0; color: #786f63; font-size: .8rem; }
.link-btn.compact { margin-top: 10px; }

@media (max-width: 920px) {
  .learning-route { grid-template-columns: repeat(2, 1fr); }
  .writer-layout, .review-grid { grid-template-columns: 1fr; }
  .engine-card { min-height: 220px; }
  .symbol-tools { align-items: stretch; flex-direction: column; }
}

@media (max-width: 680px) {
  #app-root { padding: 18px 12px 50px; }
  .app-header { position: static; }
  .header-inner { padding: 10px 12px; }
  .main-nav { display: grid; grid-template-columns: repeat(4, 1fr); gap: 4px; }
  .nav-btn { flex-direction: column; justify-content: center; gap: 3px; padding: 7px 3px; font-size: .67rem; }
  .nav-btn > span { width: 19px; height: 19px; }
  .learning-route { grid-template-columns: 1fr; gap: 10px; }
  .route-card { min-height: 110px; }
  .route-card strong { margin-top: 21px; }
  .route-card small { max-width: none; }
  .home-symbols { transform: scale(.82); margin: -5px -20px 10px; }
  .home-progress { align-items: flex-start; text-align: left; }
  .writer-card, .engine-card { padding: 15px; }
  .writer-card-head { flex-direction: column; }
  .writer-meta { flex-direction: column; gap: 2px; }
  .example-strip { align-items: stretch; flex-direction: column; }
  .example-chip { width: 100%; border-radius: 10px; }
  .analyzed-sentence { justify-content: flex-start; gap: 7px; padding: 14px 8px; }
  .analyzed-token { min-width: 68px; padding-inline: 5px; }
  .results-heading { align-items: flex-start; flex-direction: column; }
  .classification-option { flex: 1 1 42%; }
  .detected-structure { gap: 6px; }
  .structure-arrow { display: none; }
  .detected-chip { min-width: 65px; flex: 1 1 28%; }
  .history-item { align-items: flex-start; flex-direction: column; gap: 3px; }
  .history-item span { width: 100%; }
}

/* ================= REFINAMIENTO PROFESIONAL V3 ================= */
.brand-logo {
  display: block;
  width: auto;
  max-width: 150px;
  height: 46px;
  object-fit: contain;
}
.brand-logo[hidden], .brand-mark[hidden] { display: none; }

/* Fichas conceptuales extensas */
.symbol-card { scroll-margin-top: 92px; }
.symbol-card.expanded {
  grid-column: 1 / -1;
  padding: 20px;
  border-color: #a9bfd6;
  box-shadow: 0 14px 32px rgba(37, 51, 70, .11);
}
.symbol-card.expanded .symbol-card-head {
  padding-bottom: 17px;
  border-bottom: 1px solid var(--border);
}
.symbol-card.expanded .symbol-card-title { font-size: 1.28rem; }
.symbol-card-body { margin-top: 18px; padding-top: 0; border-top: 0; }
.symbol-overview-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.symbol-detail-panel,
.symbol-detail-section {
  border: 1px solid var(--border);
  border-radius: 15px;
  background: #fff;
}
.symbol-detail-panel { padding: 17px 18px; }
.key-panel { background: linear-gradient(145deg, #f7fbff, #eef4fa); border-color: #c4d4e4; }
.story-panel { background: #fffaf0; border-color: #e2d5bd; }
.detail-eyebrow {
  margin: 0 0 5px !important;
  color: var(--review);
  font-size: .67rem;
  font-weight: 850;
  letter-spacing: .1em;
  text-transform: uppercase;
}
.key-idea { margin: 0 0 14px !important; color: var(--primary); font-size: 1rem; font-weight: 720; }
.recognition-list, .usage-list { margin: 7px 0 0; padding-left: 20px; }
.recognition-list li, .usage-list li { margin: 6px 0; color: #554e45; }
.visual-identity { margin-top: 15px !important; padding-top: 12px; border-top: 1px solid #cbd8e6; color: #5c6671; font-size: .78rem; text-transform: capitalize; }
.symbol-detail-section { margin-top: 14px; padding: 17px 18px; }
.detail-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 15px; }
.detail-heading h3, .compact-section h3 { margin: 0; color: var(--primary); font-size: 1rem; }
.detail-heading > span { padding: 4px 8px; border-radius: 999px; background: var(--info-bg); color: var(--primary); font-size: .67rem; font-weight: 800; }
.subtype-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 9px; margin-top: 13px; }
.subtype-card { padding: 12px; border: 1px solid #e1d9cc; border-radius: 11px; background: #fffdf9; }
.subtype-card h4 { margin: 0 0 4px; color: var(--primary); font-size: .8rem; }
.subtype-card p { margin: 0 0 8px; color: #5d564c; font-size: .74rem; line-height: 1.42; }
.subtype-card > span { display: block; padding-top: 7px; border-top: 1px dashed #ded5c7; color: #7a5a19; font-size: .68rem; font-style: italic; }
.usage-comparison-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 14px; }
.compact-section { margin-top: 14px; }
.usage-list { padding-left: 18px; }
.usage-list li { font-size: .78rem; }
.frequent-examples { margin-top: 14px; padding-top: 12px; border-top: 1px solid var(--border); }
.frequent-examples > strong { display: block; margin-bottom: 7px; color: var(--primary); font-size: .74rem; }
.frequent-examples div { display: flex; flex-wrap: wrap; gap: 6px; }
.frequent-examples span { padding: 4px 7px; border-radius: 7px; background: var(--info-bg); color: var(--primary); font-size: .68rem; }
.difference-list { display: grid; gap: 8px; margin-top: 11px; }
.difference-list article { position: relative; padding: 10px 11px 10px 14px; border-left: 3px solid #a8bfd7; border-radius: 0 9px 9px 0; background: #f6f9fc; }
.difference-list strong { color: var(--primary); font-size: .75rem; }
.difference-list p { margin: 3px 0; color: #505861; font-size: .72rem; }
.difference-list span { color: #6d5a36; font-size: .67rem; font-style: italic; }
.precision-note { display: flex; align-items: flex-start; gap: 12px; margin-top: 14px; padding: 12px 14px; border: 1px solid #e0ca83; border-radius: 11px; background: #fff9e8; color: #65521c; }
.precision-note strong { flex: 0 0 auto; font-size: .75rem; }
.precision-note span { font-size: .75rem; }
.symbol-card-actions { display: flex; justify-content: flex-end; margin-top: 14px; }

/* Taller de construcción libre por secuencia */
.construction-brief {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(240px, .75fr);
  gap: 14px;
  margin-bottom: 17px;
}
.construction-brief > div,
.orientation-text {
  margin: 0;
  padding: 15px 17px;
  border: 2px solid var(--border);
  border-radius: 15px;
  background: var(--card-bg);
}
.construction-brief > div { border-color: #b6c9dd; background: var(--info-bg); }
.brief-label { display: block; margin-bottom: 4px; color: var(--review); font-size: .66rem; font-weight: 850; letter-spacing: .1em; text-transform: uppercase; }
.construction-brief .consigna-text { margin: 0; padding: 0; border-radius: 0; background: transparent; color: var(--primary); text-align: left; font-size: 1rem; }
.orientation-text { display: flex; align-items: center; color: #62594d; font-size: .8rem; }
.orientation-text::before { content: "Pista"; flex: 0 0 auto; margin-right: 10px; padding: 4px 7px; border-radius: 999px; background: #fff2c7; color: #775800; font-size: .62rem; font-weight: 850; text-transform: uppercase; }
.structure-row { align-items: center; padding: 13px; border: 1px solid var(--border); border-radius: 15px; background: rgba(255, 253, 248, .72); }
.structure-chip { position: relative; min-width: 76px; padding-top: 11px; }
.structure-position { position: absolute; top: 4px; right: 5px; display: grid; place-items: center; width: 18px; height: 18px; border-radius: 50%; background: var(--info-bg); color: var(--primary); font-size: .58rem; font-weight: 850; }
.sequence-arrow { color: #aa9f90; font-size: 1.2rem; font-weight: 800; }
.build-slots.free-entry {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  align-items: stretch;
  gap: 11px;
  margin: 18px 0 14px;
}
.free-build-slot {
  position: relative;
  min-width: 0;
  min-height: 162px;
  padding: 13px 11px 10px;
  border: 2px solid var(--border);
  border-radius: 15px;
  background: var(--card-bg);
  box-shadow: 0 4px 12px rgba(47, 42, 36, .055);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  cursor: text;
  transition: border-color .15s ease, box-shadow .15s ease, transform .15s ease;
}
.free-build-slot:focus-within { border-color: var(--primary); box-shadow: 0 0 0 4px rgba(27, 54, 93, .11); transform: translateY(-2px); }
.free-slot-number { position: absolute; top: 8px; right: 9px; display: grid; place-items: center; width: 21px; height: 21px; border-radius: 50%; background: #eee8dc; color: #6e665b; font-size: .65rem; font-weight: 850; }
.free-slot-symbol { display: flex; align-items: center; justify-content: center; min-height: 45px; }
.free-slot-category { color: var(--primary); font-size: .7rem; font-weight: 820; text-transform: uppercase; letter-spacing: .035em; }
.free-build-slot input {
  width: 100%;
  min-height: 42px;
  padding: 8px 9px;
  border: 1px solid #cfc4b5;
  border-radius: 9px;
  background: #fff;
  color: var(--text);
  font: 700 .93rem/1.2 var(--font-main);
  text-align: center;
}
.free-build-slot input::placeholder { color: #a39a8d; font-size: .7rem; font-weight: 550; }
.free-build-slot input:focus { outline: none; border-color: var(--primary); }
.free-slot-status { min-height: 16px; color: #776e62; font-size: .61rem; font-weight: 700; text-align: center; line-height: 1.25; }
.free-build-slot.state-escrito { border-color: #a8b8c8; }
.free-build-slot.state-correcto { border-color: #4b9366; background: #f4fbf6; }
.free-build-slot.state-confirmado { border-color: #557fae; background: #f1f6fb; }
.free-build-slot.state-duda { border-color: #d19b28; background: #fffaf0; }
.free-build-slot.state-revisar,
.free-build-slot.state-varias,
.free-build-slot.state-ortografia { border-color: #b65c4f; background: #fff7f5; }
.free-build-slot.state-correcto .free-slot-status { color: #277044; }
.free-build-slot.state-confirmado .free-slot-status { color: #315f91; }
.free-build-slot.state-duda .free-slot-status { color: #865f08; }
.free-build-slot.state-revisar .free-slot-status,
.free-build-slot.state-varias .free-slot-status,
.free-build-slot.state-ortografia .free-slot-status { color: #913e34; }
.slot-confirm { padding: 4px 7px; border: 1px solid #b9994a; border-radius: 7px; background: #fff; color: #775607; font-size: .6rem; font-weight: 800; }
.slot-confirm:hover { background: #fff3cf; }
.built-sentence-preview {
  min-height: 84px;
  margin: 0 0 15px;
  padding: 13px 17px;
  border: 2px solid #b8cce0;
  border-radius: 15px;
  background: linear-gradient(145deg, #f7fbff, #edf4fa);
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: center;
  gap: 8px 12px;
  text-align: center;
  font-style: normal;
}
.preview-label { width: 100%; color: #6f7f90; font-size: .62rem; font-weight: 850; letter-spacing: .09em; text-transform: uppercase; }
.built-sentence-preview strong { color: var(--primary); font-size: 1.08rem; }
.built-sentence-preview small { color: #6b7885; font-size: .67rem; }
.preview-placeholder { color: #87919b; font-size: .8rem; }
.construction-result-list { display: grid; gap: 7px; margin: 10px 0 17px; }
.construction-result-row { display: grid; grid-template-columns: 25px minmax(90px, .35fr) 1fr; gap: 8px; align-items: start; padding: 9px 11px; border: 1px solid var(--border); border-radius: 10px; background: #fff; }
.construction-result-row > span { display: grid; place-items: center; width: 22px; height: 22px; border-radius: 50%; background: #ece7de; color: #5f574c; font-size: .7rem; font-weight: 900; }
.construction-result-row > strong { color: var(--primary); font-size: .78rem; }
.construction-result-row > small { color: #5f584f; font-size: .7rem; line-height: 1.4; }
.construction-result-row.correcto > span { background: #dff1e5; color: #266640; }
.construction-result-row.confirmado > span { background: #e0ebf7; color: #315f91; }
.construction-result-row.duda > span { background: #fff0c7; color: #7d5906; }
.construction-result-row.revisar > span { background: #f7dedb; color: #8c372e; }
.construction-result-row.ortografia > span { background: #f7dedb; color: #8c372e; }
.construction-agreement { margin: 8px 0; padding: 10px 12px; border-left: 4px solid #c48917; border-radius: 0 9px 9px 0; background: #fff5dd; color: #704f0b; font-size: .77rem; }
.construction-spelling { margin: 8px 0; padding: 10px 12px; border-left: 4px solid #b85a4f; border-radius: 0 9px 9px 0; background: #fff1ef; color: #77362f; font-size: .77rem; }

@media (max-width: 900px) {
  .subtype-grid { grid-template-columns: repeat(2, 1fr); }
  .usage-comparison-grid { grid-template-columns: 1fr; }
  .construction-brief { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  .brand-logo { max-width: 118px; height: 40px; }
  .symbol-overview-grid, .subtype-grid { grid-template-columns: 1fr; }
  .symbol-card.expanded { padding: 14px; }
  .precision-note { flex-direction: column; gap: 4px; }
  .sequence-arrow { display: none; }
  .structure-row { gap: 7px; }
  .structure-chip { min-width: 66px; flex: 1 1 28%; }
  .build-slots.free-entry { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .free-build-slot { min-height: 156px; }
  .construction-result-row { grid-template-columns: 24px 1fr; }
  .construction-result-row > small { grid-column: 2; }
}

@media (max-width: 390px) {
  .build-slots.free-entry { grid-template-columns: 1fr; }
}

/* ================= REVISIÓN LINGÜÍSTICA POR CAPAS V4 ================= */
.lexicon-status {
  position: relative;
  z-index: 1;
  margin: 13px 0 0;
  padding: 9px 11px;
  border: 1px solid #a9cdb8;
  border-radius: 10px;
  background: #edf8f1;
  color: #285d3d;
  font-size: .7rem;
  font-weight: 750;
}
.lexicon-status.notice { border-color: #dfc47c; background: #fff8e6; color: #765819; }

.review-verdict {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 11px;
  align-items: start;
  margin: 16px 0 12px;
  padding: 14px 16px;
  border: 2px solid;
  border-radius: 14px;
}
.review-verdict.ok { border-color: #77aa89; background: #f0f8f3; color: #285d3d; }
.review-verdict.warn { border-color: #d29b42; background: #fff7e8; color: #744c0c; }
.review-verdict.review { border-color: #8fa9c5; background: #f0f5fa; color: #344f6d; }
.verdict-icon,
.layer-icon {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .78);
  color: inherit;
  font-weight: 900;
}
.review-verdict strong { display: block; font-size: .95rem; }
.review-verdict small { display: block; margin-top: 3px; color: inherit; font-size: .74rem; line-height: 1.42; opacity: .9; }

.layer-review {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 18px;
}
.layer-card {
  position: relative;
  display: grid;
  grid-template-columns: 27px minmax(0, 1fr);
  gap: 8px;
  align-items: start;
  min-height: 112px;
  padding: 11px 10px 28px;
  border: 1px solid var(--border);
  border-radius: 11px;
  background: #fff;
}
.layer-card.ok { border-color: #b5d4c0; background: #f6fbf7; color: #285d3d; }
.layer-card.warn { border-color: #e1c17e; background: #fffaf0; color: #744c0c; }
.layer-card.review { border-color: #bdcddd; background: #f5f8fb; color: #344f6d; }
.layer-card .layer-icon { width: 25px; height: 25px; font-size: .7rem; }
.layer-card strong { display: block; color: inherit; font-size: .74rem; }
.layer-card small { display: block; margin-top: 3px; color: inherit; font-size: .65rem; line-height: 1.38; opacity: .88; }
.layer-state {
  position: absolute;
  right: 8px;
  bottom: 7px;
  padding: 2px 6px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .82);
  color: inherit;
  font-size: .55rem;
  font-weight: 850;
  letter-spacing: .03em;
  text-transform: uppercase;
}

.analyzed-token.spelling-review { border-color: #7897b6; background: #f4f8fc; }
.spelling-flag.review { background: #dfeaf4; color: #345a7c; }
.inspector-spelling.review { border-left-color: #7897b6; background: #f1f6fa; color: #345570; }
.diagnostic-item.review { background: #edf3f8; color: #38536f; }

.register-help { margin: 0 0 12px; color: #5d574e; font-size: .75rem; }
.register-help code { color: var(--primary); font-weight: 750; }
.unknown-list { display: flex; flex-wrap: wrap; gap: 7px; }
.unknown-chip {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 6px 9px;
  border: 1px solid #c7d4df;
  border-radius: 999px;
  background: #f4f8fb;
  color: var(--primary);
}
.unknown-chip strong { font-size: .72rem; }
.unknown-chip small { color: #687887; font-size: .6rem; }
.register-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 9px; margin-top: 13px; }
.btn.compact { min-height: 34px; padding: 6px 10px; font-size: .7rem; }

@media (max-width: 760px) {
  .layer-review { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 470px) {
  .layer-review { grid-template-columns: 1fr; }
  .layer-card { min-height: 92px; }
  .review-verdict { grid-template-columns: 31px minmax(0, 1fr); padding: 12px; }
  .verdict-icon { width: 28px; height: 28px; }
}