/* ==========================================================================
   PideFit — calculadora.css (solo /calculadora)
   Usa los colores, radios y tipografía de styles.css. Móvil primero; probado a 320, 390 y 1440 px.
   ========================================================================== */

:root {
  --error: #B42318;
  --error-soft: #FEF3F2;
}

.calc [hidden], .calc-form [hidden] { display: none !important; }

/* ---------- Distribución: formulario y resultado ---------- */
.calc-seccion { padding-top: 8px; }
.calc { display: grid; grid-template-columns: minmax(0, 1fr); gap: 20px; align-items: start; }
@media (min-width: 960px) {
  .calc { grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: 28px; }
  .calc-panel { position: sticky; top: calc(var(--nav-h) + 16px); }
}

/* ---------- Formulario ---------- */
.calc-form {
  display: grid; gap: 26px;
  padding: clamp(18px, 3vw, 32px);
  border-radius: var(--radius); background: var(--surface); border: 1px solid var(--line);
}
.calc-nojs {
  padding: 14px 16px; border-radius: var(--radius-sm);
  background: var(--amber-soft); color: var(--amber-ink); font-weight: 600; font-size: 15px;
}
.calc-grupo { margin: 0; padding: 0; border: 0; min-width: 0; }
.calc-grupo legend, .campo label {
  display: block; padding: 0; margin-bottom: 10px;
  font-weight: 800; font-size: 1.05rem; line-height: 1.3; letter-spacing: -0.01em;
}
.calc-grupo legend + .campo__pista { margin: -4px 0 10px; }

.opciones { display: grid; gap: 10px; }
.opciones--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.opciones--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.opciones--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.opciones--lista { grid-template-columns: repeat(auto-fill, minmax(min(100%, 220px), 1fr)); }

.opcion {
  display: flex; align-items: center; gap: 10px;
  min-height: 52px; padding: 11px 14px;
  border-radius: 14px; border: 1.5px solid var(--line-strong); background: var(--surface);
  cursor: pointer; line-height: 1.25;
  transition: border-color .15s ease, background-color .15s ease;
}
.opcion:hover { border-color: var(--ink); }
.opcion input { flex: none; width: 18px; height: 18px; margin: 0; accent-color: var(--accent-ink); }
.opcion b { display: block; font-weight: 700; font-size: 15.5px; }
.opcion small { display: block; margin-top: 2px; color: var(--muted); font-size: 13.5px; }
.opcion:has(input:checked) { border-color: var(--accent-ink); background: var(--accent-soft); }
.opcion:has(input:focus-visible) { outline: 3px solid var(--accent); outline-offset: 2px; }
.opcion input:focus-visible { outline: none; }
.calc-grupo[aria-invalid="true"] .opcion:not(:has(input:checked)) { border-color: var(--error); }

.calc-campos { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.campo { min-width: 0; }
.campo__caja {
  display: flex; align-items: center;
  border-radius: 12px; border: 1.5px solid var(--line-strong); background: var(--surface);
  transition: border-color .15s ease;
}
.campo__caja:focus-within { border-color: var(--accent-ink); box-shadow: 0 0 0 3px rgba(77, 170, 255, .35); }
.campo__caja:has([aria-invalid="true"]) { border-color: var(--error); background: var(--error-soft); }
.campo__caja input {
  flex: 1; min-width: 0; width: 100%;
  padding: 12px 8px 12px 14px; border: 0; border-radius: 12px; background: transparent;
  color: var(--ink); font: inherit; font-size: 18px; font-weight: 700; font-variant-numeric: tabular-nums;
}
.campo__caja input:focus { outline: none; }
.campo__unidad { padding-right: 14px; color: var(--muted); font-weight: 600; font-size: 15px; }
.campo__pista { margin-top: 6px; color: var(--muted); font-size: 13.5px; line-height: 1.45; }
.campo__opcional { color: var(--muted); font-weight: 600; font-size: .9em; }
.calc-error { margin-top: 6px; color: var(--error); font-size: 14px; font-weight: 600; line-height: 1.4; }

.calc-cambio {
  display: grid; gap: 22px;
  padding: clamp(16px, 2.5vw, 22px);
  border-radius: var(--radius-sm); background: var(--alt);
}
.campo--meta { max-width: 360px; }

.calc-enviar { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 16px; }
.calc-boton { min-width: 220px; min-height: 52px; font-size: 17px; }
.calc-boton:disabled { opacity: .45; cursor: not-allowed; }

/* ---------- Resultado ---------- */
.calc-espera, .calc-menor, .calc-resultado {
  padding: clamp(20px, 3vw, 28px);
  border-radius: var(--radius); background: var(--surface); border: 1px solid var(--line);
}
.calc-espera { border-style: dashed; border-color: var(--line-strong); background: transparent; }
.calc-espera__titulo { font-weight: 800; font-size: 1.25rem; letter-spacing: -0.015em; }
.calc-espera__lista { display: grid; gap: 10px; margin: 16px 0; list-style: none; color: var(--muted); font-weight: 600; }
.calc-espera__lista li { display: flex; align-items: center; gap: 10px; }
.calc-espera__lista li::after { content: ""; flex: 1; height: 10px; margin-left: 6px; border-radius: var(--pill); background: var(--alt); }
.calc-menor { border-color: var(--amber); background: var(--amber-soft); }
.calc-menor p + p { margin-top: 8px; color: var(--ink); }
.calc-menor:focus { outline: 3px solid var(--accent); outline-offset: 3px; }

.calc-resultado { box-shadow: var(--shadow); scroll-margin-top: calc(var(--nav-h) + 12px); }
.calc-resultado h2 { font-size: 1.3rem; letter-spacing: -0.015em; }
.calc-resultado h2:focus { outline: none; }
.calc-kcal { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 10px; margin-top: 10px; }
.calc-kcal .dot { align-self: center; }
.calc-kcal b { font-size: clamp(2.6rem, 2rem + 2.4vw, 3.4rem); font-weight: 800; letter-spacing: -0.035em; line-height: 1; font-variant-numeric: tabular-nums; }
.calc-kcal span:last-child { color: var(--muted); font-weight: 600; }

.calc-macros { margin-top: 14px; list-style: none; }
.calc-macros li {
  display: grid; grid-template-columns: minmax(0, 1fr) auto 3.4em; align-items: baseline; gap: 12px;
  padding: 10px 0; border-top: 1px solid var(--line);
}
.calc-macros__nombre { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; }
.calc-macros b { font-size: 1.4rem; font-weight: 800; font-variant-numeric: tabular-nums; }
.calc-macros small { color: var(--muted); font-size: 13.5px; text-align: right; font-variant-numeric: tabular-nums; }
.calc-barra { display: flex; height: 10px; margin-top: 6px; overflow: hidden; border-radius: var(--pill); background: var(--alt); }
.calc-barra span { display: block; height: 100%; }
.calc-barra__pro { background: var(--blue); }
.calc-barra__carb { background: var(--amber); }
.calc-barra__fat { background: var(--purple); }
.calc-barra__nota { margin-top: 8px; }

.calc-comida { margin-top: 20px; padding: 16px; border-radius: var(--radius-sm); background: var(--alt); }
.calc-comida h3 { font-size: 1.02rem; }
.calc-comida .macros { margin-top: 8px; }
.calc-comida .note { margin-top: 8px; }

.calc-aviso {
  margin-top: 16px; padding: 12px 14px; border-radius: 12px;
  background: var(--amber-soft); color: var(--amber-ink); font-size: 14.5px; font-weight: 600; line-height: 1.5;
}
.calc-supuestos { margin-top: 14px; }
.calc-detalle { margin-top: 18px; border-top: 1px solid var(--line); padding-top: 14px; }
.calc-detalle summary { cursor: pointer; font-weight: 700; }
.calc-pasos { margin-top: 10px; padding-left: 22px; list-style: decimal; color: #2E343B; font-size: 14.5px; line-height: 1.55; }
.calc-pasos li { margin-top: 8px; padding-left: 2px; }
.calc-honesto { margin-top: 16px; }
.calc-puente {
  display: block; margin-top: 14px; padding: 14px 16px;
  border-radius: var(--radius-sm); background: var(--accent-soft); border: 1px solid #CFE6FB;
  color: var(--accent-ink); font-weight: 700; line-height: 1.4; text-decoration: none;
}
.calc-puente:hover { text-decoration: underline; }

/* ---------- Puente a la app y cadenas ---------- */
.calc-cadenas__titulo { margin-top: 4px; font-size: 1.05rem; }
.calc-cadenas { list-style: none; margin-top: 12px; }

/* ---------- Texto de apoyo (cómo usarla, cómo se calcula, macros) ---------- */
.calc-texto > p { margin-top: 14px; color: var(--muted); }
.calc-texto .note { margin-top: 16px; }
.calc-lista { margin-top: 16px; padding-left: 24px; list-style: decimal; color: var(--muted); }
.calc-lista li { margin-top: 12px; padding-left: 4px; }
.calc-lista b { color: var(--ink); }
.calc-tabla { max-width: 100%; }
.calc-tabla__sub { color: var(--muted); font-size: 13.5px; font-weight: 500; }
.calc-texto .tabla-wrap { max-width: 520px; margin-top: 22px; }

.calc-macro-cards { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: clamp(12px, 2vw, 20px); margin-top: 22px; }
.calc-macro-cards .card { padding: 22px; }
.calc-macro-cards h3 { display: flex; align-items: center; gap: 10px; }
.calc-faq { margin-top: 20px; }

/* ---------- Responsive ---------- */
@media (max-width: 1000px) {
  .calc-macro-cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  .calc-campos { grid-template-columns: 1fr 1fr; }
  .calc-campos .campo:first-child { grid-column: 1 / -1; max-width: calc(50% - 8px); }
  .calc-macro-cards { grid-template-columns: 1fr; }
  .calc-boton { width: 100%; }
}
@media (max-width: 520px) {
  .opciones--3:not(.opciones--corto) { grid-template-columns: 1fr; }
  .opciones--2 { grid-template-columns: 1fr; }
  .calc-espera { display: none; }
}
@media (max-width: 400px) {
  .calc-campos { grid-template-columns: 1fr; }
  .calc-campos .campo:first-child { max-width: none; }
  .opcion { padding: 10px 12px; }
  .opciones--4 { grid-template-columns: 1fr; }
  /* Hombre, Mujer y Otro siguen en una fila: el círculo va arriba del texto. */
  .opciones--corto .opcion { flex-direction: column; justify-content: center; gap: 6px; padding: 10px 4px; text-align: center; }
  /* El porcentaje pasa debajo del nombre para que «Carbohidratos» y sus gramos no choquen. */
  .calc-macros li { grid-template-columns: minmax(0, 1fr) auto; grid-template-areas: 'nombre valor' 'parte valor'; gap: 0 8px; align-items: center; }
  .calc-macros__nombre { grid-area: nombre; }
  .calc-macros li > span:nth-child(2) { grid-area: valor; }
  .calc-macros small { grid-area: parte; text-align: left; padding-left: 18px; }
}