/* ==========================================================================
   Calculadora ROI — Design system calima-valorador
   ========================================================================== */

:root {
  --color-bg: #EDEAE4;
  --color-shell: #FAFAF8;
  --color-surface: #FFFFFF;
  --color-text: #111111;
  --color-text-muted: #7A7772;
  --color-text-soft: #A8A4A0;
  --color-border: #E8E4DE;
  --color-border-input: #DDD9D3;

  --color-accent: #E8A23A;
  --color-accent-dot: #F0A030;
  --color-accent-soft: rgba(232, 162, 58, 0.12);
  --color-accent-ring: rgba(232, 162, 58, 0.3);

  --color-chart-expenses: #C8C4BD;
  --color-chart-irpf: #3D3D3D;
  --color-chart-profit: #E8A23A;

  --color-quality-low: #9A9690;
  --color-quality-ok: #B8A070;
  --color-quality-good: #E8A23A;
  --color-quality-excellent: #2D8A5E;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-serif: 'Playfair Display', Georgia, serif;

  --radius-shell: 32px;
  --radius-input: 14px;
  --radius-tile: 18px;
  --radius-pill: 999px;

  --shadow-shell: 0 8px 40px rgba(17, 17, 17, 0.08), 0 2px 8px rgba(17, 17, 17, 0.04);
  --shadow-tile: 0 2px 8px rgba(17, 17, 17, 0.06);

  --donut-circumference: 389.56;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
}

body {
  font-family: var(--font-sans);
  font-size: 14px;
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100dvh;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  width: 100%;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* Página centrada — mobile-first, sin desbordar viewport */
.page {
  width: 100%;
  max-width: 640px;
  margin-inline: auto;
  padding: 12px;
  padding-left: max(12px, env(safe-area-inset-left));
  padding-right: max(12px, env(safe-area-inset-right));
}

/* Tarjeta principal */
.shell {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  background: var(--color-shell);
  border-radius: 24px;
  box-shadow: var(--shadow-shell);
  padding: 16px 12px 20px;
}

/* Barra superior */
.shell-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 20px;
  min-width: 0;
}

.shell-tag {
  flex: 1;
  min-width: 0;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-soft);
}

/* Selector idioma estilo valorador */
.lang-switch {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  padding: 4px 10px;
}

.lang-switch__sep {
  color: var(--color-border-input);
  font-size: 11px;
  user-select: none;
}

.lang-switch__btn {
  font-size: 11px;
  font-weight: 600;
  font-family: inherit;
  letter-spacing: 0.04em;
  border: none;
  background: transparent;
  color: var(--color-text-soft);
  cursor: pointer;
  padding: 2px 4px;
  transition: color 0.15s;
}

.lang-switch__btn.active { color: var(--color-text); }
.lang-switch__btn:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }

/* Marca */
.brand {
  text-align: center;
  margin-bottom: 24px;
}

.brand__name {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--color-text);
}

.brand__subtitle {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-top: 4px;
}

/* Formulario */
.form-heading {
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-align: center;
  margin-bottom: 6px;
}

.form-sub {
  font-size: 12px;
  color: var(--color-text-muted);
  text-align: center;
  margin-bottom: 20px;
}

.section {
  border: none;
  margin-bottom: 16px;
  padding: 0;
  width: 100%;
  min-width: 0;
}

.form {
  width: 100%;
  min-width: 0;
  max-width: 100%;
}

.section__title {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-soft);
  margin-bottom: 8px;
}

/* Cuadrícula 2 columnas compacta (móvil y desktop) */
.field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  width: 100%;
}

.field-grid--4,
.field-grid--2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.field {
  min-width: 0;
  width: 100%;
}

.field--irpf { margin-top: 10px; }

.field__label {
  display: block;
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 4px;
  line-height: 1.25;
  /* Permite salto de línea en labels largos */
  overflow-wrap: anywhere;
}

.field__label--inline {
  display: inline;
  margin-bottom: 0;
  margin-right: 6px;
}

.field__input-wrap {
  display: flex;
  align-items: center;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  background: var(--color-surface);
  border: 1px solid var(--color-border-input);
  border-radius: 12px;
  overflow: hidden;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.field__input-wrap:focus-within {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-ring);
}

.field__input-wrap--small {
  display: inline-flex;
  width: auto;
}

.field__input-wrap--small .field__input {
  width: 48px;
  padding: 6px 8px;
  font-size: 13px;
}

.field__input {
  flex: 1 1 0;
  width: 0;
  min-width: 0;
  max-width: 100%;
  padding: 10px 6px;
  font-size: 16px;
  font-family: inherit;
  font-weight: 500;
  color: var(--color-text);
  background: transparent;
  border: none;
  outline: none;
  -moz-appearance: textfield;
  appearance: textfield;
}

.field__input::-webkit-outer-spin-button,
.field__input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }

.field__suffix {
  flex-shrink: 0;
  padding-right: 8px;
  padding-left: 2px;
  font-size: 11px;
  color: var(--color-text-soft);
  font-weight: 500;
}

/* Tiles cuadrados estilo valorador (IRPF) */
.tile-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 6px;
  width: 100%;
}

.tile {
  position: relative;
  aspect-ratio: 1;
  min-width: 0;
  min-height: 0;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: inherit;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-tile);
  box-shadow: var(--shadow-tile);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s, transform 0.1s;
}

.tile__label {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text);
}

.tile:hover {
  border-color: var(--color-border-input);
  transform: translateY(-1px);
}

/* Tile activo: negro + punto ámbar (como valorador) */
.tile.active {
  background: var(--color-text);
  border-color: var(--color-accent);
  box-shadow: 0 0 0 1px var(--color-accent);
}

.tile.active .tile__label { color: #fff; }

.tile.active::after {
  content: '';
  position: absolute;
  top: 8px;
  right: 8px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-accent-dot);
}

.tile:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

@media (max-width: 520px) {
  .form-heading {
    font-size: 0.95rem;
    letter-spacing: 0.03em;
  }

  .tile__label { font-size: 10px; }

  .tile.active::after {
    top: 4px;
    right: 4px;
    width: 5px;
    height: 5px;
  }

  .metrics-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .metric { min-width: 0; }

  .chart-block__header {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }

  .field--inline { justify-content: space-between; }

  .stacked-legend { gap: 6px 10px; }
}

@media (max-width: 340px) {
  .field-grid,
  .field-grid--2,
  .field-grid--4 {
    grid-template-columns: 1fr;
  }

  .tile-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .tile-grid .tile:nth-child(4) { grid-column: 1; }
  .tile-grid .tile:nth-child(5) { grid-column: 2; }
}

/* Botones */
.btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 14px 20px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  font-family: inherit;
  border: none;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: background 0.15s, transform 0.1s, opacity 0.15s;
}

.btn svg { width: 16px; height: 16px; }

.btn--calc {
  background: var(--color-text);
  color: #fff;
  margin-top: 8px;
}

.btn--calc:hover { background: #2a2a2a; }
.btn--calc:active { transform: scale(0.98); }

.btn--share {
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border-input);
  margin-top: 4px;
}

.btn--share:hover { background: var(--color-shell); }

.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Resultados (debajo del formulario) */
.results {
  width: 100%;
  min-width: 0;
  max-width: 100%;
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.results-heading {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-align: center;
}

/* Donut */
.donut-hero {
  position: relative;
  width: 150px;
  height: 150px;
  margin: 0 auto;
}

.donut-hero__svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.donut-hero__track {
  fill: none;
  stroke: var(--color-border);
  stroke-width: 14;
}

.donut-hero__fill {
  fill: none;
  stroke: var(--color-accent);
  stroke-width: 14;
  stroke-linecap: round;
  stroke-dasharray: var(--donut-circumference);
  stroke-dashoffset: var(--donut-circumference);
  transition: stroke-dashoffset 0.5s ease, stroke 0.3s ease;
}

.donut-hero__center {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.donut-hero__value {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
}

.donut-hero__label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-soft);
  margin-top: 4px;
}

/* Indicador cualitativo */
.quality-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 600;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
}

.quality-badge__icon { width: 16px; height: 16px; stroke-width: 2; }

.quality-badge--low { color: var(--color-quality-low); }
.quality-badge--ok { color: var(--color-quality-ok); background: #F8F4EC; border-color: #EDE6D8; }
.quality-badge--good { color: var(--color-quality-good); background: var(--color-accent-soft); border-color: rgba(232,162,58,0.3); }
.quality-badge--excellent { color: var(--color-quality-excellent); background: #E8F5EE; border-color: #C8E6D8; }

/* Métricas */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.metric {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-input);
  padding: 10px 12px;
}

.metric__label {
  display: block;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-soft);
  margin-bottom: 4px;
}

.metric__value {
  font-size: 14px;
  font-weight: 700;
}

/* Gráficos */
.chart-block__title {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-soft);
  margin-bottom: 10px;
}

.chart-block__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 10px;
}

.chart-block__header .chart-block__title { margin-bottom: 0; }

.field--inline {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.stacked-bar {
  display: flex;
  height: 14px;
  border-radius: 7px;
  overflow: hidden;
  background: var(--color-border);
}

.stacked-bar__segment {
  height: 100%;
  transition: width 0.5s ease;
  min-width: 0;
}

.stacked-bar__segment--expenses { background: var(--color-chart-expenses); }
.stacked-bar__segment--irpf { background: var(--color-chart-irpf); }
.stacked-bar__segment--profit { background: var(--color-chart-profit); }

.stacked-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  margin-top: 10px;
  font-size: 11px;
  color: var(--color-text-muted);
}

.stacked-legend__item { display: flex; align-items: center; gap: 4px; }

.stacked-legend__dot {
  width: 8px;
  height: 8px;
  border-radius: 2px;
  flex-shrink: 0;
}

.stacked-legend__dot--expenses { background: var(--color-chart-expenses); }
.stacked-legend__dot--irpf { background: var(--color-chart-irpf); }
.stacked-legend__dot--profit { background: var(--color-chart-profit); }

.stacked-legend strong { font-weight: 600; color: var(--color-text); margin-left: 2px; }

.bar-chart { width: 100%; height: auto; display: block; }
.bar-chart__bg { fill: var(--color-surface); stroke: var(--color-border); stroke-width: 1; }
.bar-chart__bar { fill: var(--color-chart-expenses); transition: height 0.5s ease, y 0.5s ease; }
.bar-chart__bar--accent { fill: var(--color-accent); }
.bar-chart__labels { font-size: 10px; fill: var(--color-text-soft); font-family: var(--font-sans); font-weight: 500; }

.bar-chart__values {
  display: flex;
  justify-content: space-around;
  margin-top: 8px;
  font-size: 11px;
  color: var(--color-text-muted);
}

.bar-chart__values strong { display: block; font-size: 14px; color: var(--color-text); }

/* Desglose */
.details-block { font-size: 13px; }

.details-block summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--color-text-muted);
  padding: 4px 0;
  list-style: none;
}

.details-block summary::-webkit-details-marker { display: none; }
.details-block summary::before { content: '▸ '; display: inline-block; }
.details-block[open] summary::before { transform: rotate(90deg); }

.details-list { margin-top: 8px; }

.details-list__row {
  display: flex;
  justify-content: space-between;
  padding: 6px 0;
  border-bottom: 1px solid var(--color-border);
}

.details-list__row:last-child { border-bottom: none; }
.details-list dt { color: var(--color-text-muted); }
.details-list dd { font-weight: 600; }

.share-feedback {
  text-align: center;
  font-size: 11px;
  color: var(--color-quality-excellent);
  min-height: 1em;
}

/* Pie fuera de la tarjeta */
.footer {
  margin-top: 20px;
  text-align: center;
}

.footer__brand {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-soft);
  margin-bottom: 6px;
}

.footer__links {
  display: flex;
  justify-content: center;
  gap: 8px;
  font-size: 10px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.footer__links a {
  color: var(--color-text-muted);
  text-decoration: none;
}

.footer__links a:hover { color: var(--color-text); text-decoration: underline; }

/* Tablet/desktop: más aire */
@media (min-width: 521px) {
  .page { padding: 20px 16px 32px; }
  .shell {
    padding: 24px 24px 28px;
    border-radius: var(--radius-shell);
  }
  .field__label { font-size: 10px; letter-spacing: 0.06em; }
  .field__input { font-size: 14px; padding: 11px 10px; }
  .field-grid { gap: 10px; }
  .tile-grid { gap: 8px; }
  .tile__label { font-size: 13px; }
}