/* FEX1001 — folha de estilo compartilhada das páginas de laboratório.
   Herda a paleta e a tipografia do site da disciplina. */

:root {
  --ink: #102333;
  --muted: #607080;
  --paper: #f6f3ec;
  --white: #fffdf8;
  --navy: #071b2c;
  --blue: #1e5c83;
  --cyan: #8dd7dc;
  --gold: #e6b75c;
  --line: rgba(16, 35, 51, 0.14);
  --line-strong: rgba(16, 35, 51, 0.28);
  --shadow: 0 24px 70px rgba(7, 27, 44, 0.12);
  --ok: #1f6f4a;
  --warn: #9a5b12;
  --err: #9b2f3a;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Manrope", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; border-radius: 3px; }

.skip-link {
  position: fixed; top: .5rem; left: .5rem; z-index: 20;
  padding: .7rem 1rem; background: var(--white); transform: translateY(-150%);
}
.skip-link:focus { transform: translateY(0); }

/* ---------------------------------------------------------- cabeçalho */
.lab-header {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; flex-wrap: wrap;
  padding: 1.1rem clamp(1rem, 4vw, 2.5rem);
  background: var(--navy); color: #eef7f6;
}
.lab-header .brand {
  display: flex; align-items: center; gap: .7rem;
  font-weight: 700; letter-spacing: .02em; text-decoration: none;
}
.brand-mark {
  display: inline-flex; align-items: center; justify-content: center;
  padding: .25rem .5rem; border: 1px solid rgba(238, 247, 246, .35);
  border-radius: 3px; font-family: "DM Mono", monospace; font-size: .8rem;
}
.mark-value b { color: var(--gold); }
.lab-header nav { display: flex; gap: 1.3rem; font-size: .92rem; }
.lab-header nav a { text-decoration: none; opacity: .88; }
.lab-header nav a:hover { opacity: 1; text-decoration: underline; }

/* --------------------------------------------------------------- hero */
main { width: min(1080px, calc(100% - 2.5rem)); margin: 0 auto; padding-bottom: 5rem; }

.lab-hero { padding: 3rem 0 1.5rem; }
.eyebrow {
  font-family: "DM Mono", monospace; font-size: .78rem; letter-spacing: .14em;
  text-transform: uppercase; color: var(--blue); margin: 0 0 .8rem;
}
.lab-hero h1 {
  font-family: "Newsreader", Georgia, serif; font-weight: 600;
  font-size: clamp(2rem, 5vw, 3rem); line-height: 1.08; margin: 0 0 .8rem;
  text-wrap: balance;
}
.lead { font-size: 1.08rem; color: var(--muted); max-width: 62ch; margin: 0 0 1.6rem; }

.hero-note {
  background: var(--white); border: 1px solid var(--line);
  border-left: 3px solid var(--gold); padding: 1.1rem 1.3rem;
  box-shadow: var(--shadow);
}
.hero-note p { margin: 0 0 .6rem; font-size: .95rem; max-width: 74ch; }
.hero-note p:last-child { margin-bottom: 0; }
.autosave { color: var(--muted); font-size: .85rem !important; }

/* -------------------------------------------------------------- cards */
.card {
  background: var(--white); border: 1px solid var(--line);
  padding: 1.6rem clamp(1rem, 3vw, 1.9rem); margin-top: 1.4rem;
  box-shadow: var(--shadow);
}
.card h2 {
  font-family: "Newsreader", Georgia, serif; font-weight: 600;
  font-size: 1.5rem; margin: 0 0 .9rem; display: flex; align-items: baseline;
  gap: .6rem; flex-wrap: wrap;
}
.tag {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 1.8rem; height: 1.8rem; padding: 0 .5rem;
  background: var(--navy); color: var(--white);
  font-family: "DM Mono", monospace; font-size: .85rem; font-weight: 500;
  border-radius: 2px;
}
.pts {
  font-family: "DM Mono", monospace; font-size: .8rem; color: var(--muted);
  margin-left: auto;
}
.task { font-size: .95rem; color: var(--muted); max-width: 76ch; margin: 0 0 1rem; }
.hint { font-size: .85rem; color: var(--muted); margin: .5rem 0 0; }

.eq-display {
  font-family: "Newsreader", Georgia, serif; font-size: 1.35rem;
  text-align: center; margin: 1.2rem 0; position: relative;
}
.eq-num { font-family: "DM Mono", monospace; font-size: .8rem; color: var(--muted); }
.eq-display .eq-num { position: absolute; right: 0; top: 50%; transform: translateY(-50%); }

/* ------------------------------------------------------------ campos */
label { display: block; font-size: .88rem; font-weight: 600; margin-bottom: 1rem; }
label .hint { font-weight: 400; display: inline; }

input[type="text"], input[type="date"], textarea, select {
  display: block; width: 100%; margin-top: .35rem;
  padding: .55rem .7rem; font: inherit; font-size: .95rem; font-weight: 400;
  color: var(--ink); background: var(--paper);
  border: 1px solid var(--line-strong); border-radius: 3px;
}
textarea { resize: vertical; line-height: 1.55; }
input:focus, textarea:focus, select:focus { background: var(--white); }

.inline-field { display: flex; align-items: center; gap: .6rem; flex-wrap: wrap; }
.inline-field select { width: auto; margin-top: 0; }

.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 0 1.2rem; }
.grid-4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 0 1.2rem; }

/* ------------------------------------------------------------ tabelas */
.table-wrap { overflow-x: auto; margin-bottom: 1rem; }
.data-table { border-collapse: collapse; width: 100%; min-width: 520px; font-size: .92rem; }
.data-table.narrow { min-width: 320px; }
.data-table caption {
  caption-side: top; text-align: left; font-size: .85rem; font-weight: 600;
  color: var(--muted); padding-bottom: .5rem;
}
.data-table caption .auto {
  font-weight: 400; font-family: "DM Mono", monospace; font-size: .75rem;
  color: var(--blue); margin-left: .4rem;
}
.data-table th {
  text-align: left; font-family: "DM Mono", monospace; font-size: .78rem;
  font-weight: 500; letter-spacing: .04em; color: var(--muted);
  padding: .55rem .6rem; border-bottom: 1px solid var(--line-strong);
  white-space: nowrap;
}
.data-table td { padding: .3rem .35rem; border-bottom: 1px solid var(--line); }
.data-table td.fixed { padding: .55rem .6rem; color: var(--muted); white-space: nowrap; }
.data-table input { margin-top: 0; border-color: transparent; background: transparent; }
.data-table input:hover { border-color: var(--line); }
.data-table input:focus { border-color: var(--blue); background: var(--white); }
.data-table th.mine, .data-table td.mine { background: rgba(141, 215, 220, .18); }
.data-table th.mine { color: var(--blue); font-weight: 600; }

.computed td {
  font-family: "DM Mono", monospace; font-size: .86rem;
  font-variant-numeric: tabular-nums; padding: .5rem .6rem; color: var(--ink);
}
.computed td.empty { color: var(--muted); }

.col-action { width: 2.4rem; }
.del-row {
  border: none; background: transparent; color: var(--muted);
  cursor: pointer; font-size: 1.1rem; line-height: 1; padding: .3rem .45rem;
}
.del-row:hover { color: var(--err); }

.row-actions { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }

/* ------------------------------------------------------------ botões */
.button {
  display: inline-block; padding: .6rem 1.1rem; font: inherit; font-size: .9rem;
  font-weight: 600; border: 1px solid var(--line-strong); border-radius: 3px;
  background: var(--paper); color: var(--ink); cursor: pointer;
}
.button:hover { background: var(--white); border-color: var(--blue); }
.button-primary { background: var(--navy); border-color: var(--navy); color: var(--white); }
.button-primary:hover { background: var(--blue); border-color: var(--blue); color: var(--white); }
.button-ghost { color: var(--muted); }

/* ------------------------------------------------------------ upload */
.upload { margin-bottom: 1rem; }
.upload input[type="file"] { font-size: .88rem; font-weight: 400; margin-top: .4rem; }
.thumb:empty { display: none; }
.thumb {
  margin-top: .7rem; padding: .5rem; border: 1px solid var(--line);
  background: var(--paper); display: inline-block;
}
.thumb img { display: block; max-width: 260px; max-height: 180px; }
.thumb .name {
  font-family: "DM Mono", monospace; font-size: .75rem; color: var(--muted);
  margin-top: .35rem;
}

/* ------------------------------------------------------------ gráfico */
.chart-block { margin: 1.4rem 0; }
#grafico {
  display: block; width: 100%; height: auto;
  border: 1px solid var(--line); background: var(--white);
}
.fit-readout, .derived {
  font-family: "DM Mono", monospace; font-size: .85rem; color: var(--blue);
  margin: .7rem 0 0; padding: .6rem .8rem; background: rgba(141, 215, 220, .14);
  border-left: 2px solid var(--cyan);
}

/* ---------------------------------------------------------- resultados */
.result-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 1px; background: var(--line); border: 1px solid var(--line);
  margin-bottom: 1.3rem;
}
.result-tile { background: var(--white); padding: .9rem 1rem; }
.result-tile.ref { background: var(--paper); }
.result-tile .k {
  display: block; font-family: "DM Mono", monospace; font-size: .72rem;
  letter-spacing: .06em; text-transform: uppercase; color: var(--muted);
  margin-bottom: .4rem;
}
.result-tile .n {
  display: block; font-family: "Newsreader", Georgia, serif; font-size: 1.5rem;
  font-variant-numeric: tabular-nums;
}

/* ------------------------------------------------------------- gerar */
.generate { border-left: 3px solid var(--blue); }
.gen-actions { display: flex; gap: .8rem; flex-wrap: wrap; margin-bottom: .8rem; }
.status { font-size: .9rem; margin: 0; min-height: 1.4em; }
.status.ok { color: var(--ok); }
.status.err { color: var(--err); }
.status.busy { color: var(--muted); }

.lab-footer {
  border-top: 1px solid var(--line); padding: 1.6rem 0; text-align: center;
  font-size: .85rem; color: var(--muted);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

/* ------------------------------------------- coluna calculada na Tabela 1 */
.data-table td.derived-cell {
  font-family: "DM Mono", monospace; font-size: .86rem;
  font-variant-numeric: tabular-nums; color: var(--blue);
  padding: .55rem .6rem; background: rgba(141, 215, 220, .1);
  white-space: nowrap;
}

/* -------------------------------------------------- painel de constantes */
.constants {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1px; background: var(--line); border: 1px solid var(--line);
  margin-bottom: 1.1rem;
}
.constant { background: var(--paper); padding: .6rem .8rem; }
.constant.editable { background: var(--white); }
.constant .k {
  display: block; font-family: "DM Mono", monospace; font-size: .7rem;
  letter-spacing: .06em; text-transform: uppercase; color: var(--muted);
  margin-bottom: .25rem;
}
.constant .v {
  display: block; font-family: "DM Mono", monospace; font-size: .95rem;
  font-variant-numeric: tabular-nums; color: var(--ink);
}
.constant input { margin-top: 0; padding: .35rem .5rem; font-size: .9rem; }

/* cabeçalho de duas faixas, quando a equipe mede mais de uma grandeza */
.data-table thead tr.group th {
  text-align: center; border-bottom: 1px solid var(--line);
  color: var(--ink); font-weight: 600;
}
.data-table thead tr.group th.spacer { border-bottom: none; }