/* ===== design tokens =====
   Direction: cyanotype blueprint desk. A dark drafting-table navy canvas
   with a live blueprint grid, and a warm drafting-paper document pinned on
   top of it. Safety-orange + tape-measure amber carry the construction
   vocabulary instead of a generic accent. */
:root {
  --color-canvas: #0C2536;
  --color-canvas-line: #1E4A63;
  --color-canvas-ink: #ECE7D8;
  --color-canvas-ink-soft: #85A0B2;

  --color-paper: #F5F1E5;
  --color-paper-dim: #EAE2CC;
  --color-line: #D8CDAE;

  --color-ink: #1B2530;
  --color-ink-soft: #5E6A72;

  --color-primary: #1C4A63;
  --color-primary-dark: #0F2E3E;

  --color-accent: #E2A233;
  --color-cta: #D2551E;
  --color-cta-dark: #A63F14;

  --color-success: #3E7D57;
  --color-error: #BE402A;
}

* { font-family: inherit; }
body { font-family: 'Public Sans', sans-serif; }
.font-body { font-family: 'Public Sans', sans-serif; }
.font-display { font-family: 'Big Shoulders Display', sans-serif; }
.font-mono, input, select, textarea, .font-mono * { font-variant-numeric: tabular-nums; }
.font-mono { font-family: 'JetBrains Mono', monospace; }
.font-900 { font-weight: 900; }
.font-800 { font-weight: 800; }

/* ===== canvas: blueprint grid + diagonal hatch band ===== */
.blueprint-grid {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-color: var(--color-canvas);
  background-image:
    linear-gradient(var(--color-canvas-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-canvas-line) 1px, transparent 1px),
    linear-gradient(var(--color-canvas-line) 2px, transparent 2px),
    linear-gradient(90deg, var(--color-canvas-line) 2px, transparent 2px);
  background-size: 22px 22px, 22px 22px, 110px 110px, 110px 110px;
  opacity: 0.55;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, black 40%, transparent 85%);
}

/* ===== masthead ===== */
.mark-badge {
  border: 1px solid var(--color-canvas-line);
  background: rgba(245, 241, 229, 0.04);
}

/* ===== document meta stamp ===== */
.doc-stamp {
  border: 1px solid var(--color-line);
  background: var(--color-paper);
  color: var(--color-ink);
  padding: 10px 16px;
  min-width: 230px;
  box-shadow: 0 10px 24px -12px rgba(6, 20, 30, 0.55);
}

/* ===== index rail (sits directly on dark canvas) ===== */
.idx-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 4px;
  font-size: 13px;
  color: var(--color-canvas-ink-soft);
  border-left: 2px solid transparent;
  padding-left: 12px;
  transition: color .15s ease, border-color .15s ease;
}
.idx-link:hover { color: var(--color-canvas-ink); }
.idx-link.active {
  color: var(--color-accent);
  border-left-color: var(--color-cta);
  font-weight: 600;
}
.idx-link .idx-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--color-canvas-ink-soft);
  width: 20px;
}
.idx-link.active .idx-num { color: var(--color-cta); }

/* ===== document card + crop/registration marks ===== */
.doc-card {
  background: var(--color-paper);
  border: 1px solid var(--color-line);
  color: var(--color-ink);
  box-shadow:
    0 30px 70px -30px rgba(4, 14, 22, 0.65),
    0 2px 0 rgba(255, 255, 255, 0.4) inset;
}
.crop {
  position: absolute;
  width: 16px;
  height: 16px;
  pointer-events: none;
}
.crop::before, .crop::after { content: ""; position: absolute; background: var(--color-cta); }
.crop::before { width: 100%; height: 1.5px; top: 50%; transform: translateY(-50%); }
.crop::after { height: 100%; width: 1.5px; left: 50%; transform: translateX(-50%); }
.crop-tl { top: -8px; left: -8px; }
.crop-tr { top: -8px; right: -8px; }
.crop-bl { bottom: -8px; left: -8px; }
.crop-br { bottom: -8px; right: -8px; }

/* ===== section titles ===== */
main section[id] { scroll-margin-top: 24px; }

.sec-title {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-family: 'Big Shoulders Display', sans-serif;
  font-weight: 700;
  font-size: 21px;
  letter-spacing: 0.01em;
  text-transform: uppercase;
  color: var(--color-primary-dark);
}
.sec-title .idx-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  font-weight: 500;
  color: var(--color-cta);
}

/* ===== form fields ===== */
.field { display: flex; flex-direction: column; }
.field label { font-size: 13px; font-weight: 600; margin-bottom: 6px; color: var(--color-ink); }
.field label em { color: var(--color-cta); font-style: normal; }
.field label .opt { color: var(--color-ink-soft); font-weight: 400; }

.field input, .field select, .field textarea {
  border: 1px solid var(--color-line);
  background: var(--color-paper-dim);
  padding: 10px 12px;
  font-size: 14px;
  color: var(--color-ink);
  transition: border-color .15s ease, background .15s ease, box-shadow .15s ease;
}
.field input:focus, .field select:focus, .field textarea:focus,
input[type="checkbox"]:focus {
  outline: none;
  border-color: var(--color-primary);
  background: var(--color-paper);
  box-shadow: 0 0 0 3px rgba(28, 74, 99, 0.15);
}
.field textarea { resize: vertical; }
.field input::placeholder, .field textarea::placeholder { color: #9B9378; }

.field .err {
  display: none;
  font-size: 12px;
  color: var(--color-error);
  margin-top: 5px;
}
.field.invalid input, .field.invalid select, .field.invalid textarea {
  border-color: var(--color-error);
}
.field.invalid .err { display: block; }

#agreeErr { display: none; }
#agree.invalid ~ #agreeErr,
.agree-invalid #agreeErr { display: block; }

input[type="checkbox"] {
  width: 17px; height: 17px;
  accent-color: var(--color-primary);
}

/* ===== scope of work table ===== */
.scope-table { width: 100%; border-collapse: collapse; min-width: 560px; }
.scope-table th {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-ink-soft);
  text-align: left;
  font-weight: 500;
  padding: 0 10px 8px;
  border-bottom: 1px solid var(--color-line);
}
.scope-table td { padding: 6px 10px 6px 0; vertical-align: top; }
.scope-table tr td:first-child {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--color-cta);
  padding-top: 14px;
}
.scope-table input, .scope-table select {
  width: 100%;
  height: 38px;
  box-sizing: border-box;
  border: 1px solid var(--color-line);
  background: var(--color-paper-dim);
  padding: 8px 10px;
  font-size: 13px;
  line-height: 1.2;
  appearance: none;
  -webkit-appearance: none;
}
.scope-table select {
  background-image: linear-gradient(45deg, transparent 50%, var(--color-ink-soft) 50%), linear-gradient(135deg, var(--color-ink-soft) 50%, transparent 50%);
  background-position: calc(100% - 14px) center, calc(100% - 9px) center;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
  padding-right: 26px;
}
.scope-table input:focus, .scope-table select:focus {
  outline: none;
  border-color: var(--color-primary);
  background: var(--color-paper);
}
.row-remove {
  color: var(--color-ink-soft);
  padding: 8px;
  transition: color .15s ease;
}
.row-remove:hover { color: var(--color-error); }

.add-row-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
  padding: 7px 12px;
  transition: background .15s ease, color .15s ease;
}
.add-row-btn:hover { background: var(--color-primary); color: #fff; }

/* ===== file drop zone ===== */
.drop-zone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  border: 1.5px dashed var(--color-line);
  padding: 32px 16px;
  cursor: pointer;
  color: var(--color-ink-soft);
  background: rgba(216, 205, 174, 0.14);
  transition: border-color .15s ease, background .15s ease;
}
.drop-zone:hover, .drop-zone.dragover {
  border-color: var(--color-primary);
  background: var(--color-paper-dim);
}
.file-chip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  border: 1px solid var(--color-line);
  background: var(--color-paper-dim);
  padding: 8px 12px;
  font-size: 13px;
}
.file-chip button { color: var(--color-ink-soft); }
.file-chip button:hover { color: var(--color-error); }

/* ===== dummy-data demo button ===== */
.dummy-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
  background: var(--color-paper-dim);
  border: 1px dashed var(--color-line);
  padding: 9px 13px;
  transition: border-color .15s ease, color .15s ease, background .15s ease;
}
.dummy-btn:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background: var(--color-paper);
}

/* ===== submit ===== */
.submit-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-cta);
  color: #fff;
  font-weight: 700;
  font-size: 14px;
  padding: 13px 24px;
  transition: background .15s ease, transform .1s ease;
}
.submit-btn:hover { background: var(--color-cta-dark); }
.submit-btn:active { transform: translateY(1px); }

/* ===== pdf export button ===== */
.pdf-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
  font-weight: 700;
  font-size: 14px;
  padding: 13px 24px;
  transition: background .15s ease, color .15s ease;
}
.pdf-btn:hover { background: var(--color-primary); color: #fff; }
.pdf-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  pointer-events: none;
}

/* ===== bottom nav (mobile) ===== */
.bottom-nav {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 50;
  display: flex;
  background: var(--color-paper);
  border-top: 1px solid var(--color-line);
  box-shadow: 0 -12px 26px -14px rgba(6, 20, 30, 0.45);
  padding-bottom: env(safe-area-inset-bottom, 0px);
}
.bottom-nav-link {
  flex: 1 1 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  padding: 9px 2px 8px;
  color: var(--color-ink-soft);
  border-top: 2px solid transparent;
  transition: color .15s ease, border-color .15s ease;
}
.bottom-nav-link span {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9.5px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.bottom-nav-link:active { color: var(--color-primary); }
.bottom-nav-link.active {
  color: var(--color-cta);
  border-top-color: var(--color-cta);
}

/* ===== success state ===== */
.success-mark {
  width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
  background: var(--color-success);
  color: #fff;
  border-radius: 50%;
}

/* ===== signature element: rubber-stamp watermark on the submit block ===== */
.stamp-mark {
  position: absolute;
  top: 14px;
  right: 22px;
  width: 108px;
  height: 108px;
  border: 2px solid var(--color-cta);
  border-radius: 50%;
  color: var(--color-cta);
  opacity: 0.16;
  transform: rotate(-11deg);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  line-height: 1.5;
  pointer-events: none;
  user-select: none;
}
.stamp-mark::before {
  content: "";
  position: absolute;
  inset: 8px;
  border: 1px solid var(--color-cta);
  border-radius: 50%;
}

/* ===== mobile responsiveness ===== */
@media (max-width: 640px) {
  .field input,
  .field select,
  .field textarea,
  .scope-table input,
  .scope-table select {
    font-size: 16px;
  }

  .doc-stamp {
    min-width: 0;
    width: 100%;
    padding: 10px 14px;
  }

  .submit-btn,
  .pdf-btn,
  .add-row-btn,
  .dummy-btn {
    width: 100%;
  }

  .submit-btn,
  .pdf-btn,
  .dummy-btn {
    padding: 14px 20px;
    justify-content: center;
  }

  input[type="checkbox"] {
    width: 20px;
    height: 20px;
  }

  .row-remove,
  .file-chip button {
    padding: 10px;
  }

  .scope-table { min-width: 480px; }
  .scope-table th,
  .scope-table td { padding: 6px 8px 8px 0; }

  .stamp-mark { display: none; }
}

@media (max-width: 400px) {
  .doc-stamp {
    font-size: 13px;
  }
}