:root {
  --paper: #F2EDE4;
  --card: #FBF8F2;
  --ink: #2B211B;
  --ink-soft: #6B5D4F;
  --burgundy: #7A2E2E;
  --burgundy-dim: #5E2222;
  --forest: #3F5B44;
  --gold: #A9823F;
  --line: #DDD2BF;

  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'Source Serif 4', Georgia, serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}

.page { max-width: 820px; margin: 0 auto; padding: 0 24px 80px; }

/* ---------------- Topbar ---------------- */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 30px 0 22px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 32px;
}

.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark { font-size: 26px; }
.brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 22px;
  color: var(--burgundy);
}
.brand-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

.tabs { display: flex; gap: 6px; }
.tab-btn {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--ink-soft);
  padding: 8px 16px;
  border-radius: 20px;
  font-family: var(--font-body);
  font-size: 13.5px;
  cursor: pointer;
}
.tab-btn.active { background: var(--burgundy); border-color: var(--burgundy); color: #FBF8F2; }
.tab-btn:not(.active):hover { border-color: var(--burgundy); color: var(--burgundy); }

/* ---------------- Content ---------------- */

.view { display: none; }
.view.active { display: block; animation: fade-in 0.2s ease; }

@keyframes fade-in {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

.intro { margin-bottom: 24px; }
.eyebrow {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--gold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}
.lede { font-size: 15.5px; color: var(--ink-soft); line-height: 1.6; max-width: 62ch; margin: 0; }

/* ---------------- Forms ---------------- */

.run-form {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 24px 26px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 26px;
}

.run-form label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13.5px;
  color: var(--ink-soft);
  font-weight: 600;
  font-family: var(--font-body);
}

.run-form input, .run-form select, .run-form textarea {
  font-family: var(--font-body);
  font-size: 14.5px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: #fff;
  color: var(--ink);
}
.run-form textarea { resize: vertical; }
.run-form input:focus, .run-form select:focus, .run-form textarea:focus {
  outline: 2px solid var(--gold);
  outline-offset: 1px;
}

.row-inline { display: flex; gap: 16px; flex-wrap: wrap; }
.row-inline label { flex: 1; min-width: 200px; }

.run-btn {
  align-self: flex-start;
  background: var(--burgundy);
  color: #FBF8F2;
  border: none;
  padding: 11px 24px;
  border-radius: 5px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
}
.run-btn:hover { background: var(--burgundy-dim); }
.run-btn:disabled { background: var(--line); color: var(--ink-soft); cursor: wait; }

.status-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 10px;
  text-transform: uppercase;
  margin-left: 6px;
}
.status-tag.ok { background: rgba(63,91,68,0.14); color: var(--forest); }
.status-tag.missing { background: rgba(122,46,46,0.1); color: var(--burgundy); }

/* ---------------- Results ---------------- */

.spinner-line {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-soft);
  display: flex;
  align-items: center;
  gap: 10px;
}
.spinner-dot {
  width: 8px; height: 8px; border-radius: 50%; background: var(--burgundy);
  animation: pulse 1s ease-in-out infinite;
}
@keyframes pulse { 0%,100% { opacity: 0.25; } 50% { opacity: 1; } }

.error-box {
  background: rgba(122,46,46,0.07);
  border: 1px solid rgba(122,46,46,0.3);
  color: var(--burgundy);
  padding: 12px 14px;
  border-radius: 7px;
  font-size: 13.5px;
  margin-bottom: 16px;
}

.result-card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 26px 26px 24px 34px;
  overflow: hidden;
}

/* ribbon bookmark — elemento distintivo */
.ribbon {
  position: absolute;
  top: 0;
  left: 22px;
  width: 20px;
  height: 58px;
  background: var(--burgundy);
}
.ribbon::after {
  content: "";
  position: absolute;
  bottom: -14px;
  left: 0;
  width: 0; height: 0;
  border-left: 10px solid transparent;
  border-right: 10px solid transparent;
  border-top: 14px solid var(--paper);
}

.block-title {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  margin: 22px 0 10px;
}
.block-title:first-of-type { margin-top: 4px; }

.option-list { display: flex; flex-direction: column; gap: 8px; margin-bottom: 4px; }
.option-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  cursor: pointer;
  font-size: 15px;
}
.option-item.selected { border-color: var(--gold); background: rgba(169,130,63,0.08); }
.option-item input { margin-top: 3px; }
.option-item .opt-title { font-family: var(--font-display); font-weight: 600; font-size: 16.5px; }

.kw-grid { display: flex; flex-direction: column; gap: 8px; }
.kw-row {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.kw-row.ok { border-left: 3px solid var(--forest); }
.kw-row.warn { border-left: 3px solid var(--burgundy); }
.kw-head { display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.kw-text { font-family: var(--font-mono); font-size: 13.5px; }
.kw-count { font-family: var(--font-mono); font-size: 11.5px; color: var(--ink-soft); white-space: nowrap; }
.kw-count.over { color: var(--burgundy); font-weight: 600; }
.kw-warnings { font-size: 12px; color: var(--burgundy); line-height: 1.5; }
.kw-warnings div::before { content: "⚠ "; }

.chip-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 4px; }
.chip {
  font-family: var(--font-mono);
  font-size: 12px;
  background: rgba(169,130,63,0.12);
  color: var(--gold);
  padding: 4px 10px;
  border-radius: 12px;
}

.notice-box {
  background: rgba(169,130,63,0.09);
  border: 1px solid rgba(169,130,63,0.35);
  color: #6b511f;
  padding: 12px 14px;
  border-radius: 7px;
  font-size: 13px;
  margin-top: 20px;
  line-height: 1.5;
}

.actions-row { display: flex; gap: 10px; margin-top: 20px; flex-wrap: wrap; }
.ghost-btn {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--ink-soft);
  padding: 8px 15px;
  border-radius: 6px;
  font-family: var(--font-body);
  font-size: 13px;
  cursor: pointer;
}
.ghost-btn:hover { border-color: var(--burgundy); color: var(--burgundy); }

.checkbox-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 6px 12px;
  font-weight: 400;
}
.checkbox-item {
  display: flex !important;
  flex-direction: row !important;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--ink);
  font-weight: 400 !important;
  cursor: pointer;
}
.checkbox-item input { margin: 0; }

.hint {
  font-size: 12px;
  color: var(--ink-soft);
  margin: -8px 0 0;
  line-height: 1.4;
}
.sep {
  border: none;
  border-top: 1px solid var(--line);
  margin: 4px 0;
}
.vol-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--forest);
  background: rgba(63,91,68,0.1);
  padding: 1px 7px;
  border-radius: 8px;
}
.vol-tag.none { color: var(--ink-soft); background: rgba(107,93,79,0.1); }
.source-note {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--ink-soft);
  margin-bottom: 14px;
}

.history-project {
  border: 1px solid var(--line);
  border-radius: 8px;
  margin-bottom: 10px;
  overflow: hidden;
}
.history-project-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 16px;
  background: var(--card);
  cursor: pointer;
}
.history-project-head:hover { background: rgba(169,130,63,0.06); }
.history-generations {
  padding: 4px 16px 12px;
  border-top: 1px solid var(--line);
}
.history-generation {
  padding: 9px 4px;
  border-bottom: 1px solid var(--line);
  font-size: 13.5px;
  cursor: pointer;
}
.history-generation:last-child { border-bottom: none; }
.history-generation:hover { color: var(--burgundy); }

@media (max-width: 640px) {
  .topbar { flex-direction: column; align-items: flex-start; gap: 14px; }
  .page { padding: 0 16px 60px; }
}