.mono { font-family: 'JetBrains Mono', monospace; }
.syne { font-family: 'Syne', sans-serif; }

/* ── Layout ─────────────────────────────────────────── */
.app-wrapper {
  position: relative; z-index: 1;
  max-width: 1140px;
  margin: 0 auto;
  padding: 2rem 1.5rem 5rem;
}

/* ── HEADER / BRAND ─────────────────────────────────── */
.brand-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--hairline);
  background: linear-gradient(180deg, transparent 0%, var(--placeholder-fade) 160%);
  border-radius: var(--radius-md);
}

.brand-left { display: flex; align-items: center; gap: 1.2rem; }

/* Logo mark */
.logo-mark {
  position: relative;
  width: 52px; height: 52px;
  flex-shrink: 0;
}
.logo-mark svg { width: 52px; height: 52px; }

/* Wordmark */
.brand-wordmark {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 2rem;
  letter-spacing: -2px;
  line-height: 1;
  color: var(--text);
}
.brand-wordmark span {
  color: var(--accent);
}

.brand-tagline {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  color: var(--text-dim);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-top: 0.25rem;
}

/* Badges norma */
.brand-badges {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  align-items: center;
}
.brand-badge {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.62rem;
  padding: 0.2rem 0.5rem;
  border-radius: 3px;
  border: 1px solid var(--border);
  color: var(--text-dim);
  background: var(--bg-card);
  letter-spacing: 0.3px;
}

#tabla-link {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(99,102,241,0.07);
  height: auto;
  width: fit-content;
  font-size: 0.62rem;
}

.nav-link {
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: 8px;
  border: 1px solid var(--border);
  transition: color 0.25s ease, border-color 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
}
.nav-link:hover {
  color: var(--accent);
  border-color: var(--border-acc);
  background: var(--bg-hover);
  box-shadow: 0 0 12px var(--accent-glow);
}

.brand-badge.primary {
  border-color: var(--border-acc);
  color: var(--accent2);
  background: rgba(99,102,241,0.07);
}

/* ── Main grid ──────────────────────────────────────── */
.main-grid {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 1.25rem;
  align-items: stretch;
}
@media (max-width: 800px) { .main-grid { grid-template-columns: 1fr; } }

.controls-col {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* ── Paneles ─────────────────────────────────────────── */
.panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.35rem;
  box-shadow: var(--shadow-panel);
  transition: border-color 0.1s ease, box-shadow 0.1s ease;
}
.panel:hover {
  border-color: var(--border-acc);
}
.panel-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--text-dim);
  margin-bottom: 0.9rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.panel-title .pt-accent { color: var(--accent); }

/* ── Select exposición ──────────────────────────────── */
label.field-label {
  display: block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.62rem;
  color: var(--text-dim);
  margin-bottom: 0.4rem;
  letter-spacing: 0.5px;
}
select#select-exposicion {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  padding: 0.6rem 2rem 0.6rem 0.8rem;
  border-radius: 6px;
  outline: none;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2355556a' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.8rem center;
  transition: border-color 0.15s;
}
select#select-exposicion:focus { border-color: var(--accent); }
select#select-exposicion option,
select#select-exposicion optgroup { background: var(--bg-card2); color: var(--text); }

/* Info box */
.exposicion-info-box {
  margin-top: 0.85rem;
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-card2);
  font-size: 0.78rem;
}
.info-row { display: flex; gap: 0.5rem; align-items: baseline; margin-bottom: 0.3rem; flex-wrap: wrap; }
.info-key { font-family: 'JetBrains Mono', monospace; font-size: 0.62rem; color: var(--text-dim); min-width: 76px; }

/* Ambiente doble denominación */
.amb-moderno {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  color: var(--accent);
}
.amb-antiguo {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.62rem;
  color: var(--text-dim);
  margin-left: 0.3rem;
}

/* ── Tipo cards ─────────────────────────────────────── */
.tipo-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
  margin-top: 0.9rem;
}
.tipo-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 0.85rem 0.4rem;
  cursor: pointer;
  text-align: center;
  transition: all 0.15s ease;
  user-select: none;
}
.tipo-card:hover { border-color: var(--accent2); background: var(--bg-hover); }
.tipo-card.active {
  border-color: var(--accent);
  background: var(--accent-glow);
  box-shadow: 0 0 0 1px var(--accent), 0 0 16px rgba(99,102,241,0.1);
}
.tc-icon  { font-size: 1.3rem; margin-bottom: 0.3rem; }
.tc-label { font-family: 'JetBrains Mono', monospace; font-size: 0.62rem; font-weight: 600;
            color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.5px; }
.tipo-card.active .tc-label { color: var(--accent2); }

/* ── Consistencia cards ─────────────────────────────── */
.cons-grid {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-top: 0.9rem;
}
.cons-card {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 0.65rem 0.9rem;
  cursor: pointer;
  transition: all 0.15s ease;
  user-select: none;
}
.cons-card:hover { border-color: var(--accent2); background: var(--bg-hover); }
.cons-card.active {
  border-color: var(--accent3);
  background: rgba(52,211,153,0.07);
  box-shadow: 0 0 0 1px var(--accent3);
}
.cons-visual {
  display: flex;
  gap: 2px;
  align-items: flex-end;
  flex-shrink: 0;
}
.cons-bar {
  width: 4px;
  border-radius: 2px;
  background: var(--border);
  transition: background 0.15s;
}
.cons-card.active .cons-bar.filled { background: var(--accent3); }
.cons-card:not(.active) .cons-bar.filled { background: var(--text-dim); }

.cons-info { flex: 1; min-width: 0; }
.cons-label {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--text);
  line-height: 1.2;
}
.cons-card.active .cons-label { color: var(--accent3); }
.cons-sub {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.62rem;
  color: var(--text-dim);
  margin-top: 0.1rem;
}
.cons-codigo {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.68rem;
  padding: 0.15rem 0.4rem;
  border-radius: 3px;
  border: 1px solid var(--border);
  color: var(--text-dim);
  background: var(--bg-card2);
  flex-shrink: 0;
}
.cons-card.active .cons-codigo { border-color: var(--accent3); color: var(--accent3); }

/* ── Botones ─────────────────────────────────────────── */
.btn-row { display: flex; gap: 0.6rem; margin-top: 1rem; }
.btn-calcular {
  flex: 1;
  padding: 0.75rem 1rem;
  font-family: 'Syne', sans-serif;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 7px;
  cursor: pointer;
  transition: all 0.15s ease;
  box-shadow: 0 0 0 0 rgba(99,102,241,0);
}
.btn-calcular:hover {
      background: var(--btn-calcular-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(99,102,241,0.35);
}
.btn-calcular:active { transform: translateY(0); }
.btn-reset {
  padding: 0.75rem 0.85rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 7px;
  cursor: pointer;
  transition: all 0.15s;
}
.btn-reset:hover { border-color: var(--text-muted); color: var(--text); }

/* ── Columna resultados ─────────────────────────────── */
.results-col {
  display: flex;
  flex-direction: column;
  min-height: 0;
  position: relative;
}

/* Placeholder (sin caja sólida — estado inicial) */
.results-placeholder {
  position: relative;
  flex: 1;
  min-height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem 1rem 1.75rem;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: radial-gradient(
      ellipse 120% 80% at 50% -20%,
      var(--placeholder-glow) 0%,
      transparent 55%
    ),
    linear-gradient(165deg, var(--placeholder-fade) 0%, transparent 42%);
  border: 1px solid var(--placeholder-border);
  box-shadow: 0 0 0 1px var(--hairline) inset;
}

.results-placeholder__glow {
  position: absolute;
  width: 200px;
  height: 200px;
  top: 10%;
  right: 8%;
  border-radius: 50%;
  background: radial-gradient(circle, var(--placeholder-glow) 0%, transparent 70%);
  filter: blur(28px);
  opacity: 0.65;
  pointer-events: none;
}

.results-placeholder__inner {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 26rem;
  text-align: left;
}

.results-placeholder__eyebrow {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.58rem;
  font-weight: 600;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--accent2);
  margin-bottom: 0.5rem;
  opacity: 0.95;
}

.results-placeholder__title {
  font-family: "Syne", sans-serif;
  font-size: clamp(1.35rem, 2.8vw, 1.75rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  color: var(--text);
  margin-bottom: 0.65rem;
}

.results-placeholder__lead {
  font-size: 0.8rem;
  line-height: 1.65;
  color: var(--text-muted);
  font-weight: 400;
  max-width: 28em;
}

.results-placeholder__lead strong {
  color: var(--text);
  font-weight: 600;
}

.results-placeholder__list {
  list-style: none;
  margin: 1.35rem 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--hairline);
}

.results-placeholder__list li {
  display: flex;
  align-items: baseline;
  gap: 0.85rem;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--hairline);
  font-size: 0.76rem;
  color: var(--text-muted);
  transition: color 0.15s ease, padding-left 0.15s ease;
}

.results-placeholder__list li:last-child {
  border-bottom: none;
}

.results-placeholder__list li:hover {
  color: var(--text);
  padding-left: 0.2rem;
}

.rp-idx {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.58rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--accent);
  opacity: 0.85;
  min-width: 1.5rem;
}

.rp-txt {
  flex: 1;
  letter-spacing: 0.01em;
}

/* ── Resultados panel (contenido / error) ──────────── */
.resultados-panel {
  border-radius: var(--radius-lg);
}

.resultados-panel--content {
  background: var(--bg-card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-result);
}

.resultados-panel--message {
  background: var(--bg-card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-panel);
}

.resultados-error.resultados-panel--message {
  border-color: rgba(248, 113, 113, 0.28);
  background: linear-gradient(165deg, var(--bg-card) 0%, rgba(248, 113, 113, 0.06) 100%);
}

[data-theme="light"] .resultados-error.resultados-panel--message {
  border-color: rgba(220, 38, 38, 0.22);
  background: linear-gradient(165deg, var(--bg-card) 0%, rgba(220, 38, 38, 0.05) 100%);
}

.resultado-header {
  padding: 1.2rem 1.4rem;
  background: linear-gradient(135deg, var(--bg-card2), var(--bg-card3));
  border-bottom: 1px solid var(--border);
  position: relative;
}

.resultado-header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent) 0%, transparent 92%);
  opacity: 0.75;
  pointer-events: none;
}
.resultado-title-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 0.4rem;
}
.resultado-clase {
  font-family: 'Syne', sans-serif;
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  letter-spacing: -1px;
}

/* Denominación doble ambiente */
.ambiente-stack { display: flex; flex-direction: column; justify-content: center; gap: 0.05rem; }
.ambiente-moderno {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text);
  line-height: 1.1;
}
.ambiente-antiguo {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6rem;
  color: var(--text-dim);
  line-height: 1;
}

.resultado-desc { font-size: 0.78rem; color: var(--text-muted); margin-top: 0.15rem; }
.resultado-tipo-badge {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.62rem;
  padding: 0.2rem 0.5rem;
  border-radius: 3px;
  background: rgba(99,102,241,0.12);
  color: var(--accent2);
  border: 1px solid rgba(99,102,241,0.3);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ── Métricas grid ──────────────────────────────────── */
.resultado-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--border);
  border-bottom: 1px solid var(--border);
}
@media (max-width: 500px) { .resultado-grid { grid-template-columns: 1fr; } }

.metric-card {
  background: var(--bg-card);
  padding: 1.1rem 1.2rem;
  display: flex;
  flex-direction: column;
}
.metric-card.resistencia-card {
      background: var(--gradient-resistencia);
    }
.metric-icon { font-size: 1rem; margin-bottom: 0.5rem; }
.metric-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 0.3rem;
}
.metric-value {
  font-family: 'Syne', sans-serif;
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1;
}
.metric-value-big {
  font-family: 'Syne', sans-serif;
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  color: var(--accent3);
  line-height: 1;
  letter-spacing: -1px;
}
.metric-unit {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.62rem;
  color: var(--text-dim);
  margin-top: 0.25rem;
}
.metric-sub {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.68rem;
  color: var(--text-muted);
  margin-top: 0.3rem;
}

@keyframes cardIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0);   }
}
.card-animate { animation: cardIn 0.35s ease both; }

/* ── Árido máximo ───────────────────────────────────── */
.arido-section {
  padding: 1.1rem 1.4rem;
  border-top: 1px solid var(--border);
  background: var(--bg-card2);
}
.arido-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--gold);
  margin-bottom: 0.15rem;
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  flex-wrap: wrap;
}
.arido-subtitle {
  font-weight: 400;
  color: var(--text-dim);
  letter-spacing: 0.5px;
}
.arido-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.5rem;
  margin-top: 0.75rem;
}
@media (max-width: 600px) { .arido-grid { grid-template-columns: repeat(2, 1fr); } }
.arido-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.7rem 0.7rem 0.6rem;
  text-align: center;
}
.arido-uso {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6rem;
  color: var(--text-dim);
  margin-bottom: 0.4rem;
  line-height: 1.4;
}
.arido-valor {
  font-family: 'Syne', sans-serif;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--gold);
  line-height: 1;
}
.arido-mm {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6rem;
  color: var(--text-dim);
  margin-left: 2px;
  font-weight: 400;
}
.arido-nota {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6rem;
  color: var(--text-dim);
  margin-top: 0.6rem;
  line-height: 1.5;
}

/* ── Avisos ─────────────────────────────────────────── */
.avisos-section, .notas-section { padding: 1rem 1.4rem 0; }
.section-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-dim);
  margin-bottom: 0.55rem;
}
.avisos-list { display: flex; flex-direction: column; gap: 0.45rem; }
.aviso-item {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  padding: 0.65rem 0.85rem;
  border-radius: 6px;
  border-left: 3px solid;
  font-size: 0.78rem;
}
.aviso-icon { font-size: 0.95rem; flex-shrink: 0; line-height: 1.5; }
.aviso-titulo {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.66rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 0.2rem;
}
.aviso-texto { color: var(--text-muted); font-size: 0.75rem; line-height: 1.5; }

.aviso-sr  { background: rgba(248,113,113,0.07); border-color: var(--red);    }
.aviso-sr .aviso-titulo  { color: var(--red); }
.aviso-mr  { background: rgba(96,165,250,0.07);  border-color: var(--blue);   }
.aviso-mr .aviso-titulo  { color: var(--blue); }
.aviso-xf  { background: rgba(34,211,238,0.07);  border-color: var(--cyan);   }
.aviso-xf .aviso-titulo  { color: var(--cyan); }
.aviso-cl  { background: rgba(251,146,60,0.07);  border-color: var(--orange); }
.aviso-cl .aviso-titulo  { color: var(--orange); }
.aviso-sev { background: rgba(248,113,113,0.07); border-color: var(--red);    }
.aviso-sev .aviso-titulo { color: var(--red); }

/* ── Notas ──────────────────────────────────────────── */
.notas-list { list-style: none; }
.nota-item {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.68rem;
  color: var(--text-muted);
  padding: 0.28rem 0;
  border-bottom: 1px solid var(--border);
}
.nota-item:last-child { border-bottom: none; }

/* ── Footer resultado ───────────────────────────────── */
.resultado-footer {
  padding: 0.75rem 1.4rem;
  border-top: 1px solid var(--border);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.58rem;
  color: var(--text-dim);
}

/* ── Error / aviso en panel ─────────────────────────── */
.resultados-error {
  padding: 2rem 1.5rem 2.25rem;
  text-align: center;
}

.error-icon { font-size: 2rem; margin-bottom: 0.6rem; }
.error-title {
  font-family: 'Syne', sans-serif;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--red);
  margin-bottom: 0.4rem;
}
.resultados-error p { font-size: 0.8rem; color: var(--text-muted); line-height: 1.6; }
.resultados-error p strong { color: var(--text); }
.error-sub { font-size: 0.72rem !important; margin-top: 0.4rem !important; }

/* ── Badges grupo ───────────────────────────────────── */
.badge-grupo {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 0.2rem 0.5rem;
  border-radius: 3px;
}
.badge-sin_riesgo    { background: rgba(52,211,153,0.12);  color: var(--accent3); border: 1px solid rgba(52,211,153,0.3); }
.badge-carbonatacion { background: rgba(251,191,36,0.12);  color: var(--gold);    border: 1px solid rgba(251,191,36,0.3); }
.badge-marina        { background: rgba(96,165,250,0.12);  color: var(--blue);    border: 1px solid rgba(96,165,250,0.3); }
.badge-cloruros      { background: rgba(251,146,60,0.12);  color: var(--orange);  border: 1px solid rgba(251,146,60,0.3); }
.badge-hielo         { background: rgba(34,211,238,0.12);  color: var(--cyan);    border: 1px solid rgba(34,211,238,0.3); }
.badge-quimico       { background: rgba(248,113,113,0.12); color: var(--red);     border: 1px solid rgba(248,113,113,0.3); }
.badge-abrasion      { background: rgba(192,132,252,0.12); color: var(--purple);  border: 1px solid rgba(192,132,252,0.3); }

/* ── Severidad ──────────────────────────────────────── */
.text-sev-0 { color: var(--text-dim); }
.text-sev-1 { color: var(--accent3);  }
.text-sev-2 { color: var(--gold);     }
.text-sev-3 { color: var(--orange);   }
.text-sev-4 { color: var(--red);      }
.text-sev-5 { color: var(--red-extreme); font-weight: 800; }

/* ── Referencia rápida ──────────────────────────────── */
.ref-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.45rem;
  margin-top: 0.6rem;
}
.ref-chip {
  padding: 0.5rem 0.55rem;
  border-radius: 5px;
  border: 1px solid var(--border);
  background: var(--bg);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.62rem;
  cursor: pointer;
  transition: all 0.15s;
}
.ref-chip:hover { transform: translateY(-1px); }
.ref-chip-code { font-weight: 700; font-size: 0.75rem; margin-bottom: 0.1rem; }
.ref-chip-desc { color: var(--text-dim); font-size: 0.58rem; line-height: 1.3; }

    /* ── Nota + footer (bloque inferior) ───────────────── */
    .app-bottom {
      margin-top: 1.25rem;
    }

    .app-bottom .app-footer {
      margin-top: 1rem;
    }

    /* ── Footer app ─────────────────────────────────────── */
    .app-footer {
      margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  justify-content: space-between;
  align-items: flex-start;
}
.footer-refs {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.62rem;
  color: var(--text-dim);
  line-height: 2;
}
.footer-brand {
  font-family: 'Syne', sans-serif;
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-dim);
  letter-spacing: -0.5px;
}
.footer-brand span { color: var(--accent); }
.footer-version {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6rem;
  color: var(--text-dim);
  margin-top: 0.2rem;
}

/* ── Selector de árido ──────────────────────────────── */
.arido-sel-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.4rem;
  margin-top: 0.1rem;
}
@media (max-width: 400px) { .arido-sel-grid { grid-template-columns: repeat(4, 1fr); } }
.arido-sel-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.55rem 0.3rem 0.45rem;
  cursor: pointer;
  text-align: center;
  transition: all 0.15s ease;
  user-select: none;
}
.arido-sel-card:hover { border-color: var(--gold); background: rgba(251,191,36,0.05); }
.arido-sel-card.active {
  border-color: var(--gold);
  background: rgba(251,191,36,0.1);
  box-shadow: 0 0 0 1px var(--gold);
}
.arido-sel-val {
  font-family: 'Syne', sans-serif;
  font-size: 1rem;
  font-weight: 800;
  color: var(--text-dim);
  line-height: 1;
}
.arido-sel-card.active .arido-sel-val { color: var(--gold); }
.arido-sel-mm {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.52rem;
  font-weight: 400;
  color: var(--text-dim);
  margin-left: 1px;
}
.arido-sel-uso {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.55rem;
  color: var(--text-dim);
  margin-top: 0.25rem;
  line-height: 1.2;
}
.arido-sel-card.active .arido-sel-uso { color: var(--gold); opacity: 0.7; }
.arido-sel-nota {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.58rem;
  color: var(--text-dim);
  margin-top: 0.6rem;
  line-height: 1.5;
}

/* ── Tipificación ───────────────────────────────────── */
.tipif-section {
      padding: 1.1rem 1.4rem 0.9rem;
      border-bottom: 1px solid var(--border);
      background: var(--gradient-tipif);
    }
.tipif-header {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 0.85rem;
}
.tipif-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--accent2);
}
.tipif-norm {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.58rem;
  color: var(--text-dim);
}

/* Fórmula principal grande — clickable */
.tipif-formula-main {
  background: var(--bg-card);
  border: 1px solid rgba(99,102,241,0.3);
  border-radius: 10px;
  padding: 1rem 1.25rem 0.85rem;
  cursor: pointer;
  transition: all 0.15s ease;
  margin-bottom: 0.75rem;
  position: relative;
  overflow: hidden;
}
.tipif-formula-main::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(99,102,241,0.05), transparent);
  opacity: 0;
  transition: opacity 0.15s;
}
.tipif-formula-main:hover { border-color: var(--accent2); transform: translateY(-1px); box-shadow: 0 4px 20px rgba(99,102,241,0.15); }
.tipif-formula-main:hover::before { opacity: 1; }
.tipif-formula-main.copied { border-color: var(--accent3); }

.tipif-formula-display {
  font-family: 'Syne', sans-serif;
  font-size: clamp(1.5rem, 4vw, 2.2rem);
  font-weight: 800;
  letter-spacing: -1px;
  line-height: 1;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0;
}
.tf-sep  { color: var(--text-dim); font-weight: 400; font-size: 0.75em; margin: 0 2px; }
.tf-pre  { color: var(--accent2); }
.tf-fck  { color: var(--gold);    }
.tf-cons { color: var(--accent3); }
.tf-tmax { color: var(--cyan);    }
.tf-clase{ color: var(--orange);  }

.tipif-copy-hint {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6rem;
  color: var(--text-dim);
  margin-top: 0.5rem;
  transition: color 0.15s;
}
.tipif-formula-main:hover .tipif-copy-hint { color: var(--accent2); }
.tipif-formula-main.copied .tipif-copy-hint { color: var(--accent3); }

/* Leyenda desglose */
.tipif-format-legend {
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 0.65rem 0.9rem;
  margin-bottom: 0.6rem;
}
.tipif-legend-row {
  display: flex;
  align-items: flex-start;
  gap: 0.3rem;
  flex-wrap: wrap;
}
.tipif-legend-seg {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
}
.tipif-legend-divider {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
  color: var(--text-dim);
  padding-top: 0.25rem;
}
.tipif-seg { padding: 0.15rem 0.4rem; border-radius: 4px; font-family: 'JetBrains Mono', monospace; font-weight: 700; font-size: 0.78rem; }
.tipif-seg-pre   { background: rgba(167,139,250,0.12); color: var(--accent2); }
.tipif-seg-fck   { background: rgba(251,191,36,0.12);  color: var(--gold);    }
.tipif-seg-cons  { background: rgba(52,211,153,0.12);  color: var(--accent3); }
.tipif-seg-tmax  { background: rgba(34,211,238,0.12);  color: var(--cyan);    }
.tipif-seg-clase { background: rgba(251,146,60,0.12);  color: var(--orange);  }
.tipif-seg-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.56rem;
  text-align: center;
  line-height: 1;
}

.tipif-nota {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.58rem;
  color: var(--text-dim);
  line-height: 1.6;
}

/* ── Animations ─────────────────────────────────────── */
.animate-in { opacity: 0; }
.hidden { display: none !important; }

/* Escritorio: sin scroll en el documento; columnas con scroll interno */
@media (min-width: 801px) {
  html,
  body {
    height: 100%;
    overflow: hidden;
  }

  body {
    display: flex;
    flex-direction: column;
  }

  .app-wrapper {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
    max-width: 1980px;
    padding: 0.65rem 1rem 0.4rem;
    width: 100%;
  }

  .brand-header {
    margin-bottom: 0.5rem;
    padding-bottom: 0.45rem;
    flex-shrink: 0;
  }

  .main-grid {
    flex: 1;
    min-height: 0;
    grid-template-columns: minmax(272px, 348px) 1fr;
    gap: 0.75rem;
    align-items: stretch;
  }

  .controls-col {
    min-height: 0;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding-right: 4px;
  }

  .controls-col .panel {
    padding: 1rem 1.1rem;
  }

  .results-col {
    position: static;
    min-height: 0;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    display: flex;
    flex-direction: column;
  }

  .app-bottom {
    flex-shrink: 0;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 0.65rem;
    align-items: end;
    margin-top: 0.35rem;
    padding-top: 0.4rem;
    border-top: 1px solid var(--border);
  }

  .panel-nota {
    margin-top: 0 !important;
    padding: 0.6rem 0.85rem !important;
  }

  .panel-nota p {
    font-size: 0.72rem !important;
    line-height: 1.55 !important;
  }

  .app-footer.app-footer--compact {
    margin-top: 0 !important;
    padding-top: 0 !important;
    border-top: none;
    gap: 0.75rem;
  }

  .footer-refs {
    font-size: 0.58rem !important;
    line-height: 1.65 !important;
  }

  .footer-brand {
    font-size: 0.95rem !important;
  }
}

@media (min-width: 801px) and (max-width: 1024px) {
  .app-bottom {
    grid-template-columns: 1fr;
    align-items: stretch;
  }

  .app-bottom .app-footer.app-footer--compact {
    border-top: 1px solid var(--border);
    padding-top: 0.5rem;
  }
}

@media (max-width: 800px) {
  .results-col {
    position: static;
  }
}