/* Registro de calicata: entradas a la izquierda, resultado tipo columna estratigráfica a la derecha. */
:root {
  --bg: #F5F5F8; --surface: #FFFFFF; --panel: #E4E5EC; --ink: #1B1B23; --ink-2: #4B4D5A; --line: #CDCFDA;
  --accent: #A65A12; --accent-soft: #F6E5D0; --ok: #2C7A4B; --warn: #8F5D07; --bad: #B3321E;
  --f-display: 'Raleway', system-ui, sans-serif; --f-body: 'Roboto', system-ui, -apple-system, 'Segoe UI', sans-serif; --f-mono: 'Roboto Mono', ui-monospace, Consolas, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #13141A; --surface: #1C1E27; --panel: #272A35; --ink: #ECEDF2; --ink-2: #A9ABBA; --line: #363949;
    --accent: #E5A152; --accent-soft: #3B2D19; --ok: #62C08A; --warn: #E6B552; --bad: #F2846F; color-scheme: dark;
  }
}
*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--f-body); font-size: 15px; line-height: 1.55; }
.wrap { max-width: 1120px; margin: 0 auto; padding-block: 28px 56px; padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }
.eyebrow { font: 500 .72rem/1.2 var(--f-mono); text-transform: uppercase; letter-spacing: .12em; color: var(--ink-2); margin: 0; }
h1 { font-family: var(--f-display); font-weight: 300; font-size: clamp(2.6rem, 7vw, 4rem); line-height: 1; letter-spacing: -.015em; margin: 10px 0 12px; }
h2 { font-family: var(--f-display); font-weight: 500; font-size: 1.5rem; line-height: 1.2; margin: 0; text-wrap: balance; }
h3 { font: 500 .78rem/1.2 var(--f-mono); text-transform: uppercase; letter-spacing: .1em; color: var(--ink-2); margin: 0 0 10px; }
.lede { max-width: 66ch; color: var(--ink-2); margin: 0 0 24px; font-size: 1.02rem; }

/* Pestañas */
.tabs { display: flex; gap: 2px; overflow-x: auto; border-bottom: 1px solid var(--line); margin-bottom: 22px; scrollbar-width: thin; }
.tabs button { font: 500 .9rem var(--f-body); white-space: nowrap; padding: 11px 16px; background: transparent; color: var(--ink-2); border: 0; border-bottom: 2px solid transparent; margin-bottom: -1px; cursor: pointer; }
.tabs button[aria-selected="true"] { color: var(--ink); border-bottom-color: var(--accent); }
.tabs button:hover { color: var(--ink); }

.cols { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: 20px; align-items: start; }
@media (max-width: 860px) { .cols { grid-template-columns: minmax(0, 1fr); } }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 6px; padding: 20px; min-width: 0; }
.stack { display: flex; flex-direction: column; gap: 18px; min-width: 0; }

label.lbl { display: block; font-weight: 500; margin-bottom: 6px; }
label.lbl.mini { font-weight: 400; font-size: .85rem; color: var(--ink-2); margin-bottom: 4px; }
.hint { color: var(--ink-2); font-size: .85rem; margin: 6px 0 0; }
.jump { position: fixed; z-index: 20; left: 50%; transform: translateX(-50%); bottom: calc(14px + env(safe-area-inset-bottom, 0px)); max-width: calc(100% - 32px);
  font: 500 .9rem var(--f-body); padding: 10px 18px; border-radius: 99px; border: 1px solid var(--ink); background: var(--ink); color: var(--bg); cursor: pointer; box-shadow: 0 4px 16px rgba(0, 0, 0, .25); }
@media (min-width: 861px) { .jump { display: none !important; } }
@media print { .jump { display: none !important; } }
textarea, input[type=number], input[type=text], select {
  width: 100%; font: inherit; color: var(--ink); background: var(--bg); border: 1px solid var(--line); border-radius: 6px; padding: 9px 11px;
}
textarea { resize: vertical; min-height: 112px; }
input[type=number] { font-family: var(--f-mono); font-size: .92rem; }
select { appearance: auto; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.btn { font: 500 .9rem var(--f-body); padding: 9px 15px; border-radius: 6px; border: 1px solid var(--ink); background: var(--ink); color: var(--bg); cursor: pointer; text-align: center; }
.btn.ghost { background: transparent; color: var(--ink); }
.btn.small { padding: 6px 11px; font-size: .82rem; }
.btn[disabled] { opacity: .5; cursor: not-allowed; }
.row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.examples { margin-top: 10px; }
fieldset { border: 0; padding: 0; margin: 18px 0 0; min-width: 0; }
legend { padding: 0; margin-bottom: 8px; font: 500 .78rem/1.2 var(--f-mono); text-transform: uppercase; letter-spacing: .1em; color: var(--ink-2); }
details > summary { cursor: pointer; font-weight: 500; }
details.card > summary { font: 500 .78rem/1.2 var(--f-mono); text-transform: uppercase; letter-spacing: .1em; color: var(--ink-2); }
details p { margin-top: 6px; }

/* Casillas tipo chip y radios tipo chip */
.chips, .radios { display: flex; flex-wrap: wrap; gap: 7px; }
.chip { position: relative; display: inline-block; }
.chip input { position: absolute; opacity: 0; inset: 0; width: 100%; height: 100%; margin: 0; cursor: pointer; }
.chip span { display: inline-block; padding: 5px 11px; border: 1px solid var(--line); border-radius: 99px; font-size: .84rem; background: var(--bg); color: var(--ink); }
.chip input:checked + span { background: var(--accent-soft); border-color: var(--accent); }
.chip input:focus-visible + span { outline: 2px solid var(--accent); outline-offset: 2px; }
.radios { margin-top: 8px; }
.chk { display: flex; gap: 8px; align-items: flex-start; cursor: pointer; font-size: .92rem; }
.chk input { margin-top: 4px; flex: none; }
.checks { display: flex; flex-direction: column; gap: 8px; margin-top: 14px; }

.drop { display: block; position: relative; border: 1.5px dashed var(--line); border-radius: 6px; padding: 22px 16px; text-align: center; cursor: pointer; color: var(--ink-2); background: var(--bg); }
.drop.over { border-color: var(--accent); background: var(--accent-soft); }
.drop input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.drop:focus-within { outline: 2px solid var(--accent); outline-offset: 2px; }
.preview { display: block; max-width: 100%; max-height: 320px; margin: 14px auto 0; border-radius: 6px; border: 1px solid var(--line); }
.msg { font-size: .88rem; color: var(--ink-2); margin: 10px 0 0; }
.msg.err { color: var(--bad); }
.sw { display: inline-block; flex: none; line-height: 0; }
.verdict { display: flex; gap: 16px; align-items: center; }
.verdict h2 { font-size: 1.9rem; font-weight: 300; }
.src { display: inline-block; margin-top: 6px; }
.pill { display: inline-block; font: 500 .68rem/1 var(--f-mono); letter-spacing: .06em; text-transform: uppercase; padding: 4px 8px; border-radius: 99px; border: 1px solid currentColor; color: var(--ink-2); white-space: nowrap; }
.pill.warn { color: var(--warn); }
.pill.bad { color: var(--bad); }
.pill.ok { color: var(--ok); }
.facts { display: grid; grid-template-columns: minmax(0, 1fr); margin: 18px 0 0; border-top: 1px solid var(--line); }
.facts div { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 4px 16px; padding: 9px 0; border-bottom: 1px solid var(--line); }
.facts dt { color: var(--ink-2); }
.facts dd { margin: 0; font-weight: 500; text-align: right; }
.mono { font-family: var(--f-mono); }
.sec { margin-top: 22px; }
ul.plain { margin: 0; padding-left: 18px; }
ul.plain li { margin: 3px 0; }
.alert { border: 1px solid var(--line); border-radius: 6px; padding: 12px 14px; background: var(--bg); margin-bottom: 10px; }
.alert .head { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; justify-content: space-between; margin-bottom: 4px; }
.alert strong { font-weight: 700; }
.alert p { margin: 4px 0 0; font-size: .9rem; }
.rank { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 6px 12px; align-items: center; }
.rank .nm { font-size: .9rem; }
.bar { height: 8px; background: var(--panel); border-radius: 4px; overflow: hidden; min-width: 60px; }
.bar i { display: block; height: 100%; background: var(--ink-2); }
.rank .top .bar i { background: var(--accent); }
.tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tag { font-size: .8rem; padding: 3px 9px; border-radius: 4px; background: var(--panel); color: var(--ink); }
.tag small { color: var(--ink-2); font-family: var(--f-mono); margin-left: 6px; }
.symbol { font: 300 3rem/1 var(--f-display); letter-spacing: -.01em; }

/* Formularios en rejilla */
.fields { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px 14px; margin-top: 14px; }
.fields.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
@media (max-width: 520px) { .fields.three { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.fields label { display: block; font-size: .85rem; color: var(--ink-2); min-width: 0; }
.fields input, .fields select { margin-top: 4px; }
.modes { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 4px; }
.modes label { display: flex; gap: 6px; align-items: center; cursor: pointer; }
.big { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin: 14px 0; }
.big div { background: var(--bg); border: 1px solid var(--line); border-radius: 6px; padding: 12px 14px; min-width: 0; }
.big b { display: block; font: 500 1.6rem/1.2 var(--f-mono); font-variant-numeric: tabular-nums; }
.big span { font-size: .8rem; color: var(--ink-2); }
.tbl { overflow-x: auto; margin-top: 10px; }
table { border-collapse: collapse; width: 100%; font-size: .9rem; }
th, td { text-align: left; padding: 7px 10px; border-bottom: 1px solid var(--line); font-variant-numeric: tabular-nums; }
th { font: 500 .72rem var(--f-mono); text-transform: uppercase; letter-spacing: .08em; color: var(--ink-2); }
td.m { font-family: var(--f-mono); }
.block { border-top: 1px solid var(--line); margin-top: 18px; padding-top: 16px; }
.foot { margin-top: 36px; color: var(--ink-2); font-size: .84rem; max-width: 84ch; }

/* Patrones de los símbolos de suelo */
.hp { stroke: var(--ink-2); fill: none; stroke-width: 1.1; }
.hf { fill: var(--ink-2); }
.hl { stroke: var(--line); stroke-width: 1.2; fill: none; }

/* Gráfico de plasticidad (Casagrande) */
.chart { width: 100%; height: auto; max-width: 520px; display: block; }
.pc-grid { stroke: var(--line); stroke-width: .6; }
.pc-axis { stroke: var(--ink-2); stroke-width: 1; fill: none; }
.pc-a { stroke: var(--ink); stroke-width: 1.4; fill: none; }
.pc-u { stroke: var(--ink-2); stroke-width: 1; stroke-dasharray: 4 3; fill: none; }
.pc-v { stroke: var(--ink-2); stroke-width: 1; stroke-dasharray: 2 3; fill: none; }
.pc-zone { fill: var(--accent-soft); stroke: var(--accent); stroke-width: .8; }
.pc-t { fill: var(--ink-2); font: 10px var(--f-mono); }
.pc-lbl { fill: var(--ink); font: 500 11px var(--f-mono); }
.pc-dot { fill: var(--accent); stroke: var(--surface); stroke-width: 2; }

/* Perfil estratigráfico */
.perfil { margin-top: 16px; overflow-x: auto; }
.perfil svg { display: block; max-width: 100%; height: auto; }
.pf-t { fill: var(--ink); font: 12px var(--f-body); }
.pf-n { fill: var(--ink-2); font: 11px var(--f-body); }
.pf-d { fill: var(--ink-2); font: 10px var(--f-mono); }
.pf-ax { stroke: var(--line); stroke-width: 1; }
.pf-box { stroke: var(--ink-2); stroke-width: 1; }
.reg { display: flex; flex-wrap: wrap; gap: 6px 12px; align-items: center; justify-content: space-between; padding: 10px 0; border-bottom: 1px solid var(--line); }
.reg:last-child { border-bottom: 0; }
.reg b { font-weight: 500; }
.reg small { display: block; color: var(--ink-2); }

@media (prefers-reduced-motion: no-preference) { .drop { transition: background .15s, border-color .15s; } }

/* Informe imprimible: colores fijos para papel */
#informe { display: none; }
@media print {
  :root { --surface: #fff; --ink: #000; --ink-2: #333; --line: #999; --bg: #fff; }
  html, body { background: #fff !important; }
  #app { display: none !important; }
  #informe { display: block; color: #000; background: #fff; font: 12pt/1.45 Georgia, 'Times New Roman', serif; padding: 0; }
  #informe h1 { font: 300 24pt var(--f-display); margin: 0 0 4pt; color: #000; }
  #informe h2 { font: 700 12pt var(--f-body); margin: 16pt 0 4pt; border-bottom: 1px solid #000; padding-bottom: 2pt; color: #000; }
  #informe p, #informe li { margin: 3pt 0; }
  #informe table { font-size: 10.5pt; }
  #informe th, #informe td { border-bottom: 1px solid #999; color: #000; }
  #informe .pf-t, #informe .pf-n, #informe .pf-d { fill: #000; }
  #informe .hp { stroke: #333; } #informe .hf { fill: #333; } #informe .pf-box { stroke: #333; } #informe .pf-ax { stroke: #999; }
  #informe .small { font-size: 9.5pt; color: #333; }
}