/* =========================================================================
   PROPOSALFORGE — "STUDIO LEDGER" DESIGN SYSTEM
   A visual language borrowed from formal proposals themselves: numbered
   clauses, ruled paper, a wax-seal accent, ledger typography. Not a generic
   SaaS card kit — every structural device here maps to something a real
   proposal document actually has.
   ========================================================================= */

@import url('https://fonts.googleapis.com/css2?family=Source+Serif+4:opsz,wght@8..60,400;8..60,500;8..60,600;8..60,700&family=Inter:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root {
  /* Color: named tokens, not utility-class abstractions */
  --ink:          #1B2430;   /* primary text / dark surfaces */
  --ink-soft:     #4A5568;   /* secondary text on paper */
  --paper:        #F7F5F0;   /* base background — warm, not cream-cliché */
  --paper-raised: #FFFFFF;   /* cards / raised document sheets */
  --rule:         #D8D3C8;   /* hairline rules, borders */
  --amber:        #C97A2B;   /* sealing-wax accent — the one bold move */
  --amber-dark:   #A6621F;
  --ledger-green: #3F6B52;   /* confirmations, positive states */
  --ledger-red:   #A13D3D;   /* errors */

  /* Type */
  --font-display: 'Source Serif 4', Georgia, serif;
  --font-body:    'Inter', -apple-system, sans-serif;
  --font-mono:    'IBM Plex Mono', 'SF Mono', monospace;

  --radius-doc: 2px;   /* documents have square corners, not app-card corners */
  --shadow-sheet: 0 1px 2px rgba(27,36,48,0.06), 0 12px 32px -16px rgba(27,36,48,0.18);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 600; margin: 0; color: var(--ink); }
p { margin: 0; }
a { color: inherit; }
button { font-family: inherit; cursor: pointer; }
:focus-visible { outline: 2px solid var(--amber); outline-offset: 3px; }

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 28px; }
.measure { max-width: 62ch; }

/* ---- Ruled section dividers (a document's own device, not decoration) --- */
.rule { border: none; border-top: 1px solid var(--rule); margin: 0; }

/* ---- Top bar: looks like a document header strip ---- */
.topbar {
  position: sticky; top: 0; z-index: 40;
  background: rgba(247,245,240,0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--rule);
}
.topbar-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 28px; max-width: 1120px; margin: 0 auto;
}
.brand {
  display: flex; align-items: baseline; gap: 10px;
  font-family: var(--font-display); font-weight: 600; font-size: 20px;
  text-decoration: none; color: var(--ink);
}
.brand .seal {
  width: 22px; height: 22px; border-radius: 50%;
  background: var(--amber); color: var(--paper);
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--font-mono); font-size: 11px; flex: none;
}
.nav-links { display: flex; gap: 28px; align-items: center; }
.nav-links a { text-decoration: none; color: var(--ink-soft); font-size: 15px; }
.nav-links a:hover { color: var(--ink); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 22px; border-radius: var(--radius-doc);
  font-size: 15px; font-weight: 500; border: 1px solid transparent;
  transition: transform 120ms ease, background 120ms ease, border-color 120ms ease;
  text-decoration: none; white-space: nowrap;
}
.btn:active { transform: scale(0.98); }
.btn-primary { background: var(--ink); color: var(--paper); }
.btn-primary:hover { background: #0F151D; }
.btn-amber { background: var(--amber); color: var(--paper); }
.btn-amber:hover { background: var(--amber-dark); }
.btn-ghost { background: transparent; border-color: var(--rule); color: var(--ink); }
.btn-ghost:hover { border-color: var(--ink); }
.btn-sm { padding: 8px 14px; font-size: 13px; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* ---- Hero: the cover page of a proposal ---- */
.hero {
  padding: 96px 0 72px;
  border-bottom: 1px solid var(--rule);
}
.hero-grid {
  display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 64px; align-items: start;
}
.hero-eyebrow {
  font-family: var(--font-mono); font-size: 13px; color: var(--ink-soft);
  margin-bottom: 20px;
}
.hero h1 {
  font-size: clamp(38px, 5vw, 58px); line-height: 1.08; letter-spacing: -0.01em;
}
.hero .dek {
  margin-top: 22px; font-size: 19px; color: var(--ink-soft); max-width: 46ch;
}
.hero-actions { margin-top: 34px; display: flex; gap: 14px; flex-wrap: wrap; }

/* A literal proposal "cover sheet" preview, tilted subtly like a document
   pulled from a stack — the one orchestrated visual moment on the page. */
.cover-sheet {
  background: var(--paper-raised);
  border: 1px solid var(--rule);
  box-shadow: var(--shadow-sheet);
  padding: 32px 30px;
  transform: rotate(1.1deg);
  animation: sheet-settle 900ms cubic-bezier(.16,1,.3,1) both;
}
@keyframes sheet-settle {
  from { opacity: 0; transform: rotate(4deg) translateY(18px); }
  to   { opacity: 1; transform: rotate(1.1deg) translateY(0); }
}
.cover-sheet .stamp {
  float: right; width: 54px; height: 54px; border-radius: 50%;
  border: 2px solid var(--amber); color: var(--amber);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono); font-size: 10px; text-align: center; line-height: 1.2;
  transform: rotate(8deg);
}
.cover-sheet h4 { font-size: 15px; color: var(--ink-soft); font-family: var(--font-mono); font-weight: 400; }
.cover-sheet .title { font-family: var(--font-display); font-size: 26px; margin-top: 10px; line-height: 1.2; }
.cover-sheet .meta-line { display: flex; justify-content: space-between; padding: 10px 0; border-top: 1px dashed var(--rule); font-size: 13px; color: var(--ink-soft); font-family: var(--font-mono); }
.cover-sheet .price { font-family: var(--font-mono); font-size: 28px; color: var(--ink); margin-top: 4px; }

/* ---- Table-of-contents style feature list (dotted leaders) ---- */
.toc-section { padding: 88px 0; border-bottom: 1px solid var(--rule); }
.toc-head { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; margin-bottom: 56px; align-items: end; }
.toc-list { list-style: none; margin: 0; padding: 0; }
.toc-item {
  display: grid; grid-template-columns: auto 1fr auto; align-items: baseline; gap: 12px;
  padding: 26px 0; border-top: 1px solid var(--rule);
}
.toc-item:last-child { border-bottom: 1px solid var(--rule); }
.toc-num { font-family: var(--font-mono); color: var(--amber); font-size: 15px; }
.toc-body h3 { font-size: 20px; margin-bottom: 8px; }
.toc-body p { color: var(--ink-soft); max-width: 56ch; font-size: 15.5px; }
.toc-tag { font-family: var(--font-mono); font-size: 12px; color: var(--ink-soft); align-self: start; }

/* ---- How it works: numbered clauses, genuinely sequential ---- */
.clauses { padding: 88px 0; border-bottom: 1px solid var(--rule); }
.clause-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; margin-top: 48px; }
.clause { border-left: 2px solid var(--amber); padding-left: 20px; }
.clause .n { font-family: var(--font-mono); color: var(--ink-soft); font-size: 13px; }
.clause h3 { font-size: 19px; margin: 10px 0 8px; }
.clause p { color: var(--ink-soft); font-size: 15px; }

/* ---- Use cases ---- */
.usecases { padding: 88px 0; border-bottom: 1px solid var(--rule); }
.usecase-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--rule); margin-top: 48px; border: 1px solid var(--rule); }
.usecase { background: var(--paper); padding: 28px 24px; }
.usecase .who { font-family: var(--font-mono); font-size: 12px; color: var(--amber); margin-bottom: 10px; }
.usecase p { font-size: 15px; color: var(--ink-soft); }

/* ---- FAQ ---- */
.faq { padding: 88px 0; border-bottom: 1px solid var(--rule); }
.faq-item { border-top: 1px solid var(--rule); padding: 22px 0; }
.faq-item:last-child { border-bottom: 1px solid var(--rule); }
.faq-q {
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  cursor: pointer; font-size: 17px; font-family: var(--font-display); font-weight: 600;
  background: none; border: none; width: 100%; text-align: left; padding: 0; color: var(--ink);
}
.faq-q .plus { font-family: var(--font-mono); color: var(--amber); font-size: 20px; transition: transform 160ms ease; flex: none; }
.faq-item[open] .plus { transform: rotate(45deg); }
.faq-a { margin-top: 14px; color: var(--ink-soft); font-size: 15px; max-width: 68ch; }

/* ---- Closing CTA ---- */
.cta-block { padding: 96px 0; text-align: left; }
.cta-block h2 { font-size: clamp(30px, 4vw, 42px); max-width: 20ch; }
.cta-block .dek { margin-top: 16px; color: var(--ink-soft); font-size: 17px; max-width: 48ch; }
.cta-block .actions { margin-top: 30px; display: flex; gap: 14px; }

footer { border-top: 1px solid var(--rule); padding: 40px 0; }
.footer-row { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px; }
.footer-row small { color: var(--ink-soft); font-size: 13px; font-family: var(--font-mono); }

/* =========================================================================
   APP / DASHBOARD (app.html)
   ========================================================================= */

.app-shell { min-height: 100vh; display: flex; flex-direction: column; }
.app-main { flex: 1; padding: 40px 0 80px; }
.app-header { margin-bottom: 36px; }
.app-header .kicker { font-family: var(--font-mono); font-size: 12px; color: var(--amber); }
.app-header h1 { font-size: 30px; margin-top: 8px; }

.app-grid { display: grid; grid-template-columns: 420px 1fr; gap: 40px; align-items: start; }

.panel {
  background: var(--paper-raised); border: 1px solid var(--rule);
  box-shadow: var(--shadow-sheet);
}
.panel-head { padding: 20px 24px; border-bottom: 1px solid var(--rule); display: flex; justify-content: space-between; align-items: center; }
.panel-head h2 { font-size: 15px; font-family: var(--font-mono); font-weight: 500; color: var(--ink-soft); text-transform: none; }
.panel-body { padding: 24px; }

.field { margin-bottom: 20px; }
.field label { display: block; font-size: 13px; font-weight: 500; margin-bottom: 8px; color: var(--ink); }
.field .hint { font-size: 12px; color: var(--ink-soft); margin-top: 6px; }
.field input[type=text], .field input[type=number], .field textarea, .field select {
  width: 100%; padding: 12px 14px; border: 1px solid var(--rule); border-radius: var(--radius-doc);
  background: var(--paper); font-family: var(--font-body); font-size: 14.5px; color: var(--ink);
  transition: border-color 120ms ease;
}
.field input:focus, .field textarea:focus, .field select:focus { border-color: var(--amber); outline: none; }
.field textarea { resize: vertical; min-height: 80px; }

.chip-group { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  padding: 8px 14px; border: 1px solid var(--rule); border-radius: 999px; font-size: 13px;
  background: var(--paper); color: var(--ink-soft); transition: all 120ms ease;
}
.chip.active { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.chip:hover:not(.active) { border-color: var(--ink); color: var(--ink); }

.form-actions { display: flex; gap: 12px; margin-top: 8px; }
.form-actions .btn { flex: 1; }

/* Output document panel */
.doc-toolbar { display: flex; gap: 8px; flex-wrap: wrap; }
.doc-sheet {
  padding: 48px 52px; font-family: var(--font-body); min-height: 480px; line-height: 1.7;
}
.doc-sheet[contenteditable="true"]:focus { outline: none; background: #FFFDF8; }
.doc-sheet h2 { font-size: 15px; font-family: var(--font-mono); color: var(--amber); text-transform: uppercase; letter-spacing: 0.04em; margin: 32px 0 12px; }
.doc-sheet h2:first-child { margin-top: 0; }
.doc-sheet .doc-title { font-family: var(--font-display); font-size: 28px; margin-bottom: 4px; }
.doc-sheet .doc-sub { color: var(--ink-soft); font-family: var(--font-mono); font-size: 13px; margin-bottom: 28px; }
.doc-sheet p { margin-bottom: 12px; color: var(--ink); font-size: 15px; }
.doc-sheet ul { margin: 0 0 12px; padding-left: 20px; }
.doc-sheet li { margin-bottom: 6px; font-size: 15px; }
.pricing-table { width: 100%; border-collapse: collapse; margin: 8px 0 20px; }
.pricing-table th, .pricing-table td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--rule); font-size: 14.5px; }
.pricing-table th { font-family: var(--font-mono); font-size: 12px; color: var(--ink-soft); font-weight: 500; }
.pricing-table td.amount, .pricing-table th.amount { text-align: right; font-family: var(--font-mono); }
.pricing-table tfoot td { font-weight: 600; border-bottom: none; border-top: 2px solid var(--ink); }

/* Empty state */
.empty-state { padding: 90px 40px; text-align: center; color: var(--ink-soft); }
.empty-state .glyph { font-size: 38px; margin-bottom: 18px; opacity: 0.5; }
.empty-state h3 { font-family: var(--font-display); font-size: 20px; color: var(--ink); margin-bottom: 8px; }
.empty-state p { font-size: 14.5px; max-width: 40ch; margin: 0 auto; }

/* Loading state */
.loading-state { padding: 90px 40px; text-align: center; }
.loading-line {
  height: 2px; width: 160px; margin: 0 auto 22px; background: var(--rule); position: relative; overflow: hidden;
}
.loading-line::after {
  content: ''; position: absolute; top: 0; left: -40%; width: 40%; height: 100%; background: var(--amber);
  animation: sweep 1.1s ease-in-out infinite;
}
@keyframes sweep { 0% { left: -40%; } 100% { left: 100%; } }
.loading-state p { font-family: var(--font-mono); font-size: 13px; color: var(--ink-soft); }

/* Toast */
.toast {
  position: fixed; bottom: 28px; left: 50%; transform: translateX(-50%) translateY(20px);
  background: var(--ink); color: var(--paper); padding: 12px 20px; border-radius: var(--radius-doc);
  font-size: 14px; opacity: 0; pointer-events: none; transition: all 220ms ease; z-index: 100;
  display: flex; align-items: center; gap: 10px;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.error { background: var(--ledger-red); }
.toast.success { background: var(--ledger-green); }

/* History list */
.history-item {
  padding: 14px 0; border-top: 1px solid var(--rule); display: flex; justify-content: space-between; align-items: center; gap: 12px;
}
.history-item:hover { cursor: pointer; }
.history-item .h-title { font-size: 14px; }
.history-item .h-meta { font-family: var(--font-mono); font-size: 11px; color: var(--ink-soft); }

.badge-demo {
  display: inline-flex; align-items: center; gap: 6px; font-family: var(--font-mono); font-size: 11px;
  color: var(--amber-dark); border: 1px solid var(--amber); padding: 4px 10px; border-radius: 999px;
}
.badge-demo::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--amber); }

/* Responsive */
@media (max-width: 920px) {
  .hero-grid { grid-template-columns: 1fr; gap: 44px; }
  .toc-head { grid-template-columns: 1fr; gap: 20px; }
  .clause-grid { grid-template-columns: 1fr; gap: 30px; }
  .usecase-grid { grid-template-columns: repeat(2, 1fr); }
  .app-grid { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .doc-sheet { padding: 32px 24px; }
}
@media (max-width: 560px) {
  .wrap { padding: 0 18px; }
  .hero { padding: 56px 0 48px; }
  .usecase-grid { grid-template-columns: 1fr; }
  .cover-sheet { transform: none; padding: 24px 20px; }
  .cta-block .actions, .hero-actions { flex-direction: column; }
  .btn { width: 100%; }
  .form-actions { flex-direction: column; }
}

/* Print (used for "Download as PDF" via browser print dialog) */
@media print {
  .topbar, .app-header, .panel-head, .doc-toolbar, .no-print { display: none !important; }
  .app-grid { grid-template-columns: 1fr !important; }
  .panel { border: none !important; box-shadow: none !important; }
  body { background: #fff; }
}


/* Local branding — permanently free, browser-only */
.brand-fields input + input { display:block; }
.doc-brand { font-family: var(--font-mono); font-size: 12px; color: var(--ink-soft); margin: -16px 0 28px; }
.doc-brand strong { color: var(--ink); }