:root {
  --paper: #f6f3ec;
  --paper-deep: #ebe6db;
  --ink: #0b1c33;
  --ink-soft: #3a4d66;
  --muted: #6b7c91;
  --line: rgba(11, 28, 51, 0.14);
  --navy: #0b1c33;
  --navy-mid: #16304f;
  --gold: #b8892d;
  --gold-soft: rgba(184, 137, 45, 0.18);
  --danger: #b42318;
  --font: "Source Serif 4", "Source Serif Pro", Georgia, serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --display: "Source Serif 4", Georgia, serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.55;
}
.atmosphere {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(180deg, rgba(11, 28, 51, 0.04), transparent 28%),
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 27px,
      rgba(11, 28, 51, 0.035) 28px
    ),
    radial-gradient(ellipse 70% 45% at 100% 0%, var(--gold-soft), transparent 55%),
    linear-gradient(165deg, var(--paper), var(--paper-deep));
}

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--line);
  background: rgba(246, 243, 236, 0.88);
  backdrop-filter: blur(6px);
}
.brand {
  font-family: var(--mono);
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink);
  text-decoration: none;
}
.top nav { display: flex; gap: 0.75rem; align-items: center; }
.top nav a:not(.btn) {
  color: var(--muted);
  text-decoration: none;
  font-family: var(--mono);
  font-size: 0.8rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  cursor: pointer;
  text-decoration: none;
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  padding: 0.65rem 1.05rem;
  border-radius: 2px;
}
.btn.buy {
  background: var(--navy);
  color: var(--paper);
}
.btn.buy:hover { background: var(--navy-mid); }
.btn.ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}
.btn.ghost:hover { border-color: var(--ink-soft); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }

.hero {
  min-height: calc(100vh - 4rem);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 3rem 1.5rem 4rem;
  max-width: 42rem;
  position: relative;
}
.hero::before {
  content: "";
  position: absolute;
  left: 1.5rem;
  top: 18%;
  bottom: 22%;
  width: 3px;
  background: linear-gradient(180deg, var(--gold), var(--navy));
  opacity: 0.85;
}
.brand-hero {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(2.6rem, 9vw, 4.4rem);
  letter-spacing: -0.03em;
  margin: 0 0 1.1rem;
  line-height: 0.95;
  padding-left: 1.1rem;
  color: var(--navy);
  animation: rise 0.7s ease-out both;
}
.hero h1 {
  font-family: var(--font);
  font-size: clamp(1.2rem, 2.8vw, 1.55rem);
  font-weight: 600;
  margin: 0 0 0.75rem;
  max-width: 26ch;
  padding-left: 1.1rem;
  color: var(--ink-soft);
  animation: rise 0.7s 0.12s ease-out both;
}
.lede {
  color: var(--muted);
  margin: 0 0 1.75rem;
  max-width: 38ch;
  padding-left: 1.1rem;
  animation: rise 0.7s 0.22s ease-out both;
}
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding-left: 1.1rem;
  animation: rise 0.7s 0.32s ease-out both;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.strip {
  padding: 2.5rem 1.5rem 3rem;
  border-top: 1px solid var(--line);
  max-width: 42rem;
}
.strip h2 {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 0 0 1rem;
  color: var(--gold);
}
.strip ul { margin: 0; padding-left: 1.1rem; color: var(--ink-soft); }
.strip li { margin-bottom: 0.45rem; }

.foot {
  padding: 1.5rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
}
.foot a { color: var(--navy); font-weight: 600; }

/* —— App —— */
.app-body .workspace {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 3rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  align-items: start;
}
.panel {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}
.panel-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}
.status {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0;
}
.status.unlocked { color: var(--gold); }

.field-label,
label > span.label-text,
.section-label {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}
label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
input, textarea, select {
  font: inherit;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 0.65rem 0.75rem;
}
input:focus, textarea:focus {
  outline: 2px solid rgba(11, 28, 51, 0.2);
  outline-offset: 1px;
}
textarea { resize: vertical; min-height: 4.5rem; }

.agenda-block { display: flex; flex-direction: column; gap: 0.5rem; }
.agenda-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.4rem;
  align-items: center;
}
.agenda-row input { width: 100%; }
.agenda-row .remove-row {
  font-family: var(--mono);
  font-size: 0.7rem;
  padding: 0.45rem 0.55rem;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--muted);
  cursor: pointer;
  border-radius: 2px;
}
.agenda-row .remove-row:hover { color: var(--danger); border-color: var(--danger); }
.add-row {
  align-self: flex-start;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  background: transparent;
  border: 1px dashed var(--line);
  color: var(--ink-soft);
  padding: 0.45rem 0.7rem;
  cursor: pointer;
  border-radius: 2px;
}
.add-row:hover { border-color: var(--navy); color: var(--navy); }

.actions { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.25rem; }

.preview-shell {
  position: sticky;
  top: 1rem;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 12px 40px rgba(11, 28, 51, 0.08);
  min-height: 28rem;
}
.preview-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.55rem 0.75rem;
  border-bottom: 1px solid var(--line);
  background: var(--paper);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}
.one-pager {
  padding: 1.5rem 1.4rem 1.75rem;
  color: var(--ink);
}
.one-pager .op-kicker {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
  margin: 0 0 0.35rem;
}
.one-pager h2 {
  font-family: var(--display);
  font-size: 1.55rem;
  font-weight: 700;
  margin: 0 0 1.1rem;
  letter-spacing: -0.02em;
  line-height: 1.15;
  border-bottom: 2px solid var(--navy);
  padding-bottom: 0.55rem;
}
.one-pager .op-section {
  margin-bottom: 0.85rem;
}
.one-pager .op-section h3 {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 0.25rem;
  font-weight: 500;
}
.one-pager .op-section p,
.one-pager .op-section li {
  margin: 0;
  font-size: 0.92rem;
  color: var(--ink-soft);
}
.one-pager .op-section ul {
  margin: 0;
  padding-left: 1.1rem;
}
.one-pager .op-section li + li { margin-top: 0.15rem; }
.one-pager .op-empty { color: var(--muted); font-style: italic; }
.one-pager.watermark::after {
  content: "DEMO — Brief Packer";
  position: absolute;
  right: 1rem;
  bottom: 0.75rem;
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(11, 28, 51, 0.22);
}
.preview-shell { position: sticky; }
.one-pager { position: relative; }

dialog {
  border: 1px solid var(--line);
  border-radius: 2px;
  background: var(--paper);
  color: var(--ink);
  padding: 1.25rem;
  max-width: 22rem;
}
dialog::backdrop { background: rgba(11, 28, 51, 0.45); }
dialog h2 {
  font-family: var(--display);
  margin: 0 0 0.5rem;
  font-size: 1.3rem;
}
dialog p { color: var(--muted); font-size: 0.9rem; }
.err { color: var(--danger); font-size: 0.85rem; }

@media (max-width: 860px) {
  .app-body .workspace {
    grid-template-columns: 1fr;
  }
  .preview-shell { position: static; }
}

@media (max-width: 560px) {
  .top { flex-wrap: wrap; gap: 0.75rem; }
  .hero::before { display: none; }
  .brand-hero, .hero h1, .lede, .cta-row { padding-left: 0; }
}

/* Print-optimized one-pager */
@media print {
  body * { visibility: hidden; }
  #printRoot, #printRoot * { visibility: visible; }
  #printRoot {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    background: #fff;
    box-shadow: none;
    border: none;
  }
  .preview-toolbar, .top, .actions, .panel:first-child, dialog { display: none !important; }
}