/* Paleta e tipografia iguais as da Plataforma de Provas Uninorte
   (gradeomr.eulerazevedo.eng.br) -- mesmo produto do Euler, mesma
   identidade visual em ambos. */
:root {
  --bg: #faf8f4;
  --card: #ffffff;
  --ink: #171a24;
  --muted: #5b6072;
  --accent: #e85d1f;
  --accent-dark: #c74a14;
  --navy: #1b2559;
  --ok: #146152;
  --warn: #9a6314;
  --bad: #b42318;
  --border: #e3ddd0;
  --tag-bg: #fbeae0;
  --shadow-sm: 0 1px 2px rgba(15, 20, 40, 0.05), 0 1px 1px rgba(15, 20, 40, 0.04);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Source Sans 3", "Segoe UI", ui-sans-serif, system-ui, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: "Bricolage Grotesque", ui-sans-serif, system-ui, sans-serif;
  color: var(--navy);
}

header.topbar {
  padding: 16px 20px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

header.topbar h1 { font-size: 1.15rem; margin: 0; }
header.topbar a { color: var(--muted); text-decoration: none; font-size: 0.9rem; }
header.topbar a:hover { color: var(--accent); }

main { max-width: 720px; margin: 0 auto; padding: 20px; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow-sm);
  padding: 20px;
  margin-bottom: 16px;
}

button {
  font: inherit;
  font-weight: 700;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 12px 18px;
  cursor: pointer;
  background: var(--accent);
  color: white;
  transition: background-color 0.14s ease;
}
button:hover { background: var(--accent-dark); }

button.secondary { background: var(--card); border-color: var(--border); color: var(--navy); }
button.secondary:hover { background: var(--tag-bg); }
button.danger { background: var(--bad); }
button:disabled { opacity: 0.5; cursor: not-allowed; }

input[type="text"] {
  font: inherit;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--ink);
  padding: 10px 12px;
}
input[type="text"]:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(232, 93, 31, 0.14);
}

video, canvas.preview {
  width: 100%;
  border-radius: 10px;
  background: #000;
}

.camera-wrap {
  position: relative;
}

.camera-wrap video {
  width: 100%;
  display: block;
  border-radius: 10px;
  background: #000;
}

.camera-wrap canvas.overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.status { font-size: 0.9rem; color: var(--muted); margin-top: 8px; }
.status.ok { color: var(--ok); }
.status.bad { color: var(--bad); }

.question-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}

.question-row:last-child { border-bottom: none; }

.q-label { font-weight: 700; width: 70px; color: var(--navy); }

.alt-buttons { display: flex; gap: 6px; }

.alt-btn {
  width: 36px; height: 36px;
  border-radius: 8px;
  background: var(--tag-bg);
  color: var(--navy);
  font-weight: 700;
  padding: 0;
}

.alt-btn.selected { background: var(--accent); color: white; }
.alt-btn.low-confidence.selected { background: var(--warn); }
.alt-btn.blank { background: #f1efe9; color: var(--muted); }

.confidence-tag {
  font-size: 0.75rem;
  margin-left: 8px;
  padding: 2px 8px;
  border-radius: 999px;
}

.confidence-tag.high { background: #dcf3ec; color: var(--ok); }
.confidence-tag.low { background: #f8ecd4; color: var(--warn); }
.confidence-tag.blank { background: #f1efe9; color: var(--muted); }

.score-summary {
  text-align: center;
  padding: 24px 0;
}

.score-summary .big {
  font-family: "Bricolage Grotesque", ui-sans-serif, system-ui, sans-serif;
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--accent);
}

table.export-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

table.export-table th, table.export-table td {
  border: 1px solid var(--border);
  padding: 6px 8px;
  text-align: left;
}
table.export-table th {
  background: var(--navy);
  color: #fff;
  font-family: "IBM Plex Mono", "SFMono-Regular", ui-monospace, monospace;
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ---------- Folha de respostas impressa (usada pelo gerador legado) ---------- */

@page { size: A4; margin: 0; }

.sheet {
  width: 210mm;
  height: 297mm;
  position: relative;
  background: white;
  page-break-after: always;
  font-family: Arial, sans-serif;
}

.sheet-header {
  position: absolute;
  top: 10mm;
  left: 15mm;
  right: 15mm;
}

.sheet-header h2 { margin: 0 0 4px; font-size: 14pt; }
.sheet-header .meta { font-size: 9pt; color: #444; }
.sheet-header .fields { font-size: 9pt; margin-top: 5mm; display: flex; gap: 10mm; }
.sheet-header .fields div { border-bottom: 0.3mm solid #000; width: 85mm; padding-bottom: 1mm; }
.sheet-header .box-instructions { font-size: 8pt; color: #333; margin-top: 4mm; }

/* Grade de respostas compacta — os 4 marcadores cercam so a grade (nao a
   folha inteira, nem o QR Code), pra dar pra escanear de perto. O QR fica
   ao lado, fora da area demarcada (lido numa etapa separada da camera). */

.answer-box {
  position: absolute;
  /* sem borda decorativa -- ela tocava os marcadores fiduciais dos cantos e
     se fundia com eles na binarizacao da imagem (OMR), fazendo o marcador
     "sumir" dentro do contorno da borda. Os 4 marcadores ja delimitam a
     caixa visualmente o suficiente. */
}

.marker {
  position: absolute;
  background: black;
}

.qr-target {
  position: absolute;
}

.alt-letter {
  position: absolute;
  font-size: 8pt;
  font-weight: bold;
  transform: translate(-50%, -50%);
}

.q-cell-label {
  position: absolute;
  font-size: 8pt;
  font-weight: bold;
  transform: translate(-100%, -50%);
  white-space: nowrap;
}

.answer-cell {
  position: absolute;
  border: 0.3mm solid black;
  transform: translate(-50%, -50%);
}

.box-id-label {
  position: absolute;
  font-size: 7pt;
  color: #444;
  text-align: center;
}

@media screen {
  .sheet-page-wrapper {
    display: flex;
    justify-content: center;
    padding: 20px;
    background: #ddd;
  }
}