:root {
  --bg: #faf9f7;
  --bg-soft: #f2f0ec;
  --card: #eceae5;
  --ink: #111111;
  --muted: #6f6f6f;
  --line: rgba(17, 17, 17, 0.1);
  --serif: "Instrument Serif", Georgia, "Times New Roman", serif;
  --sans: "Inter", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html,
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-weight: 500;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: none;
}

.app-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  background: rgba(250, 249, 247, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.brand {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.app-header__label {
  margin: 0;
  font-size: 0.78rem;
  color: var(--muted);
}

.layout {
  display: grid;
  grid-template-columns: minmax(320px, 420px) 1fr;
  min-height: calc(100vh - 57px);
}

.panel {
  padding: 2rem 1.5rem 3rem;
  border-right: 1px solid var(--line);
  background: var(--bg);
}

.eyebrow {
  margin: 0 0 0.6rem;
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.panel h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 0.98;
}

.lede {
  margin: 0 0 1.75rem;
  color: var(--muted);
  font-size: 0.95rem;
  max-width: 42ch;
}

form {
  display: grid;
  gap: 0.85rem;
}

.field {
  display: grid;
  gap: 0.35rem;
}

.field span {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

input,
select,
textarea {
  width: 100%;
  padding: 0.7rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: #fff;
  color: var(--ink);
  font: inherit;
  font-size: 0.92rem;
}

input:focus,
select:focus,
textarea:focus {
  outline: 2px solid var(--ink);
  outline-offset: 1px;
}

textarea {
  resize: vertical;
  min-height: 4.2rem;
}

.formule-note {
  margin: -0.2rem 0 0;
  font-size: 0.85rem;
  color: var(--muted);
}

.formule-list {
  margin: 0 0 0.4rem;
  padding: 0.85rem 0.95rem 0.85rem 1.3rem;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  font-size: 0.82rem;
  color: var(--muted);
}

.formule-list li + li {
  margin-top: 0.28rem;
}

.actions {
  display: flex;
  gap: 0.65rem;
  margin-top: 0.5rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.05rem;
  border-radius: 2px;
  font: inherit;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: opacity 0.25s;
}

.btn:hover {
  opacity: 0.82;
}

.btn:disabled {
  opacity: 0.45;
  cursor: wait;
}

.btn--solid {
  background: var(--ink);
  border: 1px solid var(--ink);
  color: var(--bg);
}

.btn--ghost {
  background: transparent;
  border: 1px solid var(--line);
  color: inherit;
}

.hint {
  margin: 0.2rem 0 0;
  min-height: 1.2em;
  font-size: 0.8rem;
  color: var(--muted);
}

.preview-wrap {
  background: var(--bg-soft);
  padding: 1.25rem 1.25rem 3rem;
  overflow: auto;
}

.preview-bar {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.sheets {
  display: grid;
  gap: 1.25rem;
  justify-content: center;
}

#pdf-stage {
  position: fixed;
  left: 0;
  top: 0;
  width: 794px;
  height: 1123px;
  overflow: hidden;
  background: #fff;
  z-index: -1;
  pointer-events: none;
}

#pdf-stage .sheet {
  width: 794px;
  height: 1123px;
  min-height: 1123px;
  max-height: 1123px;
  margin: 0;
  box-shadow: none;
  padding: 60px 64px 68px;
}

#pdf-stage .doc-top {
  grid-template-columns: 1.2fr 0.8fr;
}

#pdf-stage .sign-grid {
  grid-template-columns: 1fr 1fr;
}

#pdf-stage .doc-meta {
  text-align: right;
}

.sheet {
  width: 210mm;
  min-height: 297mm;
  padding: 16mm 17mm 18mm;
  background: #fff;
  color: #111;
  box-shadow: 0 18px 50px rgba(17, 17, 17, 0.08);
  display: flex;
  flex-direction: column;
}

.sheet__body {
  flex: 1;
}

.sheet__footer {
  display: flex;
  justify-content: space-between;
  padding-top: 8mm;
  font-size: 8pt;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #888;
}

.doc-top {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 12mm;
  padding-bottom: 7mm;
  border-bottom: 1px solid #111;
}

.doc-brand {
  font-size: 11pt;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.doc-legal {
  margin: 2.5mm 0 0;
  font-size: 8.2pt;
  line-height: 1.45;
  color: #444;
}

.doc-meta {
  text-align: right;
  font-size: 8.2pt;
  line-height: 1.45;
  color: #444;
}

.doc-title {
  margin: 8mm 0 2mm;
  font-family: var(--serif);
  font-size: 22pt;
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.05;
}

.doc-sub {
  margin: 0 0 8mm;
  font-size: 10pt;
  color: #555;
}

.parties,
.defs,
.article {
  font-size: 9.4pt;
  line-height: 1.42;
}

.parties p,
.defs p,
.article p {
  margin: 0 0 2.6mm;
}

.article h2 {
  margin: 4.2mm 0 2mm;
  font-size: 10pt;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.article h3 {
  margin: 3mm 0 1.4mm;
  font-size: 9.4pt;
  font-weight: 700;
}

.article ul {
  margin: 0 0 2.8mm;
  padding-left: 4.5mm;
}

.article li + li,
.defs li + li {
  margin-top: 1.1mm;
}

.defs h2 {
  margin: 0 0 2.5mm;
  font-size: 10pt;
}

.sign-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14mm;
  margin-top: 10mm;
}

.sign-box {
  min-height: 42mm;
}

.sign-box p {
  margin: 0 0 1.6mm;
  font-size: 9.4pt;
  line-height: 1.4;
}

.sign-line {
  margin-top: 16mm;
  border-top: 1px solid #111;
  padding-top: 2mm;
  font-size: 8pt;
  color: #666;
}

.empty {
  color: #b00;
  border-bottom: 1px dotted #b00;
}

@media (max-width: 1100px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .panel {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .sheets {
    transform-origin: top center;
  }
}

@media (max-width: 860px) {
  .sheet {
    width: 100%;
    min-height: 0;
    height: auto;
    padding: 18px;
  }

  .field-row {
    grid-template-columns: 1fr;
  }

  .doc-top,
  .sign-grid {
    grid-template-columns: 1fr;
    text-align: left;
  }

  .doc-meta {
    text-align: left;
  }
}

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

@media print {
  .app-header,
  .panel,
  .preview-bar {
    display: none !important;
  }

  .layout,
  body,
  .preview-wrap,
  .sheets {
    display: block;
    background: #fff;
    padding: 0;
    margin: 0;
    min-height: 0;
    overflow: visible;
    box-shadow: none;
  }

  .sheet {
    box-shadow: none;
    width: 210mm;
    height: 297mm;
    min-height: 297mm;
    page-break-after: always;
    break-after: page;
  }

  .sheet:last-child {
    page-break-after: auto;
    break-after: auto;
  }

  .doc-top {
    grid-template-columns: 1.2fr 0.8fr !important;
  }

  .doc-meta {
    text-align: right !important;
  }

  .sign-grid {
    grid-template-columns: 1fr 1fr !important;
  }
}