/* Private Patent Drafting — Claimset Intake
   Self-contained, mobile-friendly, system fonts */

:root {
  --bg: #f3efe6;
  --surface: #ffffff;
  --ink: #1a1d23;
  --muted: #5c6570;
  --border: #d8dde3;
  --accent: #1F3864;
  --accent-hover: #152a4a;
  --accent-soft: #e8e2d6;
  --ok: #1b6b3a;
  --warn: #8a5a00;
  --danger: #9b1c1c;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(0,0,0,.06), 0 8px 24px rgba(0,0,0,.04);
  --max: 760px;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.5;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: #fff;
  padding: .5rem 1rem;
  z-index: 100;
}
.skip-link:focus { left: 0; }

.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 1.25rem 1.25rem 1rem;
}
.site-header-inner {
  max-width: var(--max);
  margin: 0 auto;
}
.brand-kicker {
  font-size: .75rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 .25rem;
}
.site-header h1 {
  margin: 0;
  font-size: 1.45rem;
  font-weight: 650;
  letter-spacing: -.02em;
}
.site-header .tagline {
  margin: .4rem 0 0;
  color: var(--muted);
  font-size: .95rem;
}

.privacy-banner {
  max-width: var(--max);
  margin: 1rem auto 0;
  padding: .85rem 1rem;
  background: #fff8e8;
  border: 1px solid #ead7a0;
  border-radius: var(--radius);
  color: #5a4500;
  font-size: .9rem;
}
.privacy-banner strong { color: #3d2f00; }

.progress-wrap {
  max-width: var(--max);
  margin: 1.25rem auto 0;
  padding: 0 1.25rem;
}
.progress-label {
  display: flex;
  justify-content: space-between;
  font-size: .8rem;
  color: var(--muted);
  margin-bottom: .4rem;
}
.progress-track {
  height: 8px;
  background: var(--border);
  border-radius: 99px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  width: 0%;
  background: var(--accent);
  border-radius: 99px;
  transition: width .25s ease;
}
.step-dots {
  display: flex;
  flex-wrap: wrap;
  gap: .35rem;
  margin-top: .65rem;
}
.step-dot {
  font-size: .7rem;
  padding: .2rem .55rem;
  border-radius: 99px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  cursor: pointer;
}
.step-dot[aria-current="step"] {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
  font-weight: 600;
}
.step-dot.done {
  border-color: #9bc4a8;
  color: var(--ok);
}

main {
  max-width: var(--max);
  margin: 0 auto;
  padding: 1.25rem 1.25rem 4rem;
}

.panel {
  display: none;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 2px);
  box-shadow: var(--shadow);
  padding: 1.5rem 1.4rem 1.25rem;
}
.panel.active { display: block; }

.panel h2 {
  margin: 0 0 .35rem;
  font-size: 1.25rem;
  letter-spacing: -.01em;
}
.panel-lead {
  margin: 0 0 1.25rem;
  color: var(--muted);
  font-size: .95rem;
}

.field {
  margin-bottom: 1.15rem;
}
.field label,
.field .label {
  display: block;
  font-weight: 600;
  font-size: .95rem;
  margin-bottom: .35rem;
}
.help {
  display: block;
  font-size: .82rem;
  color: var(--muted);
  font-weight: 400;
  margin-top: .25rem;
  line-height: 1.4;
}
.req {
  color: var(--danger);
  font-weight: 600;
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="month"],
input[type="url"],
textarea,
select {
  width: 100%;
  font: inherit;
  padding: .65rem .75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
}
input:focus,
textarea:focus,
select:focus {
  outline: 2px solid #c9a227;
  outline-offset: 1px;
  border-color: var(--accent);
}
textarea { min-height: 96px; resize: vertical; }
textarea.tall { min-height: 140px; }

.choices {
  display: flex;
  flex-direction: column;
  gap: .4rem;
}
.choice {
  display: flex;
  gap: .6rem;
  align-items: flex-start;
  padding: .55rem .7rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fafbfc;
  cursor: pointer;
}
.choice:hover { border-color: #b0bac6; }
.choice input { margin-top: .2rem; flex-shrink: 0; }
.choice span { font-size: .92rem; }

.row-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
@media (max-width: 560px) {
  .row-2 { grid-template-columns: 1fr; }
}

.skip-row {
  display: flex;
  align-items: center;
  gap: .45rem;
  margin-top: .45rem;
  font-size: .85rem;
  color: var(--muted);
}
.skip-row input { accent-color: var(--accent); }

.reveal {
  display: none;
  margin-top: .75rem;
  padding: 1rem;
  border-left: 3px solid var(--accent);
  background: var(--accent-soft);
  border-radius: 0 8px 8px 0;
}
.reveal.open { display: block; }
.reveal h3 {
  margin: 0 0 .75rem;
  font-size: .95rem;
  color: var(--accent);
}

.file-box {
  border: 1px dashed #aeb6c0;
  border-radius: 8px;
  padding: .85rem;
  background: #fafbfc;
}
.file-box input[type="file"] { width: 100%; font-size: .85rem; }
.file-list {
  margin: .5rem 0 0;
  padding: 0;
  list-style: none;
  font-size: .85rem;
  color: var(--muted);
}
.file-list li {
  padding: .2rem 0;
  font-family: var(--mono);
  font-size: .78rem;
}

.nav-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: .75rem;
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
}
.btn {
  font: inherit;
  font-weight: 600;
  font-size: .92rem;
  padding: .65rem 1.15rem;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: .4rem;
}
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover:not(:disabled) { background: var(--accent-hover); }
.btn-secondary {
  background: var(--surface);
  border-color: var(--border);
  color: var(--ink);
}
.btn-secondary:hover:not(:disabled) { background: #f0f2f5; }
.btn-export {
  background: var(--ok);
  color: #fff;
}
.btn-export:hover:not(:disabled) { background: #14532d; }

.export-box {
  margin-top: 1.25rem;
  padding: 1rem;
  background: #f0f7f2;
  border: 1px solid #b7d4c0;
  border-radius: var(--radius);
}
.export-box h3 { margin: 0 0 .5rem; font-size: 1rem; }
.export-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  margin-top: .75rem;
}

.review-block {
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}
.review-block h3 {
  margin: 0 0 .4rem;
  font-size: .95rem;
  color: var(--accent);
}
.review-block dl {
  margin: 0;
  display: grid;
  grid-template-columns: minmax(120px, 34%) 1fr;
  gap: .35rem .75rem;
  font-size: .88rem;
}
.review-block dt { color: var(--muted); }
.review-block dd { margin: 0; white-space: pre-wrap; word-break: break-word; }

.site-footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.25rem 2.5rem;
  font-size: .8rem;
  color: var(--muted);
}
.site-footer code {
  font-family: var(--mono);
  font-size: .75rem;
  background: #eef1f4;
  padding: .1rem .35rem;
  border-radius: 4px;
}

.err {
  color: var(--danger);
  font-size: .85rem;
  margin-top: .35rem;
  display: none;
}
.err.show { display: block; }

.checkbox-ack {
  display: flex;
  gap: .65rem;
  align-items: flex-start;
  padding: .85rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fafbfc;
}
.checkbox-ack input { margin-top: .25rem; }

/* Skip: hide interactive targets, keep skip checkbox visible */
.field.is-skipped > .choices,
.field.is-skipped > input:not([data-skip]),
.field.is-skipped > textarea,
.field.is-skipped > select,
.field.is-skipped > .help:not(.skip-row),
.field.is-skipped > label:not(.skip-row):not(.checkbox-ack) {
  opacity: 0.35;
  pointer-events: none;
}
.field.is-skipped > .choices {
  display: none;
}
.field.is-skipped > input:not([type="checkbox"]):not([data-skip]),
.field.is-skipped > textarea,
.field.is-skipped > select {
  display: none;
}
.field.is-skipped .skip-row {
  color: var(--ok);
  font-weight: 600;
}

.draft-bar {
  max-width: var(--max);
  margin: 0.75rem auto 0;
  padding: 0 1.25rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1rem;
  font-size: 0.8rem;
  color: var(--muted);
}
.draft-bar button {
  font: inherit;
  font-size: 0.78rem;
  padding: 0.25rem 0.6rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surface);
  cursor: pointer;
  color: var(--muted);
}
.draft-bar button:hover {
  border-color: var(--accent);
  color: var(--accent);
}