/* ========================================================
     SISTEMA DE DISEÑO — alineado con talonarios_v4
     Paleta: paper #fefdfb, ink #1a1a1a
     Acentos por documento (los mismos del talonario):
       OP   #1e3a5f azul real
       RC   #9c2b5f magenta borgoña  ← color de marca primario
       CV   #6b2424 vino oscuro
       REM  #3d3d3d grafito
       COT  #2d5f3f verde bosque (no usado aquí, reservado)
     ======================================================== */
  :root {
    --paper: #fefdfb;
    --paper-soft: #f5f1ea;
    --ink: #1a1a1a;
    --ink-soft: #4a4a4a;
    --muted: #7a7a7a;
    --line: #e0d8cc;
    --line-strong: #c4b9a7;

    --op: #1e3a5f;
    --rc: #9c2b5f;
    --cv: #6b2424;
    --rem: #3d3d3d;

    --serif: 'Fraunces', Georgia, serif;
    --sans: 'Manrope', system-ui, sans-serif;
    --mono: 'JetBrains Mono', ui-monospace, monospace;

    --pad-page: clamp(20px, 5vw, 56px);
    --pad-section: clamp(40px, 8vw, 80px);
  }

  * { box-sizing: border-box; margin: 0; padding: 0; }

  html { scroll-behavior: smooth; scroll-padding-top: 64px; -webkit-text-size-adjust: 100%; }

  body {
    font-family: var(--sans);
    font-size: 16px;
    line-height: 1.55;
    color: var(--ink);
    background: var(--paper);
    overflow-x: hidden;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
  }

  ::selection { background: var(--brand); color: var(--paper); }

  /* ========================================================
     HEADER STICKY · COMPACTO
     ======================================================== */
  .topbar {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(254, 253, 251, 0.94);
    backdrop-filter: saturate(180%) blur(12px);
    -webkit-backdrop-filter: saturate(180%) blur(12px);
    border-bottom: 1px solid var(--line);
  }

  .topbar-inner {
    max-width: 920px;
    margin: 0 auto;
    padding: 12px var(--pad-page);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
  }

  .brand-mark {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--ink);
  }

  .brand-mark-text {
    display: flex;
    flex-direction: column;
    line-height: 1;
  }

  .brand-mark-name {
    font-family: var(--serif);
    font-weight: 600;
    font-size: 17px;
    letter-spacing: -0.01em;
  }

  .brand-mark-sub {
    font-family: var(--mono);
    font-size: 9px;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    color: var(--muted);
    margin-top: 3px;
  }

  /* monograma decorativo del talonario */
  .monogram {
    width: 32px;
    height: 32px;
    border: 1.5px solid var(--brand);
    display: grid;
    place-items: center;
    font-family: var(--serif);
    font-weight: 700;
    font-size: 14px;
    color: var(--brand);
    letter-spacing: -0.02em;
    flex-shrink: 0;
  }

  .toc-trigger {
    background: var(--ink);
    color: var(--paper);
    border: none;
    padding: 8px 14px;
    font-family: var(--mono);
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: background 0.2s;
  }
  .toc-trigger:hover { background: var(--brand); }
  .toc-trigger:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; }

  /* ========================================================
     DRAWER · ÍNDICE
     ======================================================== */
  .toc-overlay {
    position: fixed;
    inset: 0;
    background: rgba(20, 16, 12, 0.5);
    z-index: 99;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s, visibility 0.25s;
  }
  .toc-overlay.open { opacity: 1; visibility: visible; }

  .toc-drawer {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(340px, 88vw);
    background: var(--paper);
    z-index: 100;
    transform: translateX(100%);
    transition: transform 0.3s cubic-bezier(0.32, 0.72, 0, 1);
    overflow-y: auto;
    border-left: 1px solid var(--line);
  }
  .toc-drawer.open { transform: translateX(0); }

  .toc-drawer-inner { padding: 28px 24px 48px; }

  .toc-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
  }

  .toc-label {
    font-family: var(--mono);
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    color: var(--muted);
  }

  .toc-close {
    background: none;
    border: 1px solid var(--line);
    width: 28px;
    height: 28px;
    cursor: pointer;
    font-size: 16px;
    color: var(--ink);
    transition: all 0.15s;
  }
  .toc-close:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }

  .toc-list { list-style: none; }
  .toc-list li { border-bottom: 1px solid var(--line); }
  .toc-list a {
    display: flex;
    align-items: baseline;
    gap: 12px;
    padding: 12px 0;
    color: var(--ink);
    text-decoration: none;
    font-size: 15px;
    transition: color 0.15s;
  }
  .toc-list a:hover { color: var(--brand); }
  .toc-list .toc-num {
    font-family: var(--mono);
    font-size: 10px;
    color: var(--muted);
    letter-spacing: 0.08em;
    min-width: 22px;
  }

  /* ========================================================
     HERO
     ======================================================== */
  .hero {
    padding: clamp(48px, 12vw, 120px) var(--pad-page) clamp(40px, 10vw, 80px);
    max-width: 920px;
    margin: 0 auto;
    position: relative;
  }

  .hero::before {
    /* marca de QR sutil arriba a la derecha */
    content: '';
    position: absolute;
    top: clamp(24px, 5vw, 48px);
    right: var(--pad-page);
    width: 56px;
    height: 56px;
    background:
      linear-gradient(var(--ink), var(--ink)) 0 0 / 60% 8% no-repeat,
      linear-gradient(var(--ink), var(--ink)) 0 0 / 8% 60% no-repeat,
      linear-gradient(var(--ink), var(--ink)) 100% 0 / 60% 8% no-repeat,
      linear-gradient(var(--ink), var(--ink)) 100% 0 / 8% 60% no-repeat,
      linear-gradient(var(--ink), var(--ink)) 0 100% / 60% 8% no-repeat,
      linear-gradient(var(--ink), var(--ink)) 0 100% / 8% 60% no-repeat;
    opacity: 0.15;
  }

  .hero-eyebrow {
    font-family: var(--mono);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.22em;
    color: var(--brand);
    margin-bottom: 18px;
    display: flex;
    align-items: center;
    gap: 8px;
  }
  .hero-eyebrow::before {
    content: '';
    width: 28px;
    height: 1px;
    background: var(--brand);
  }

  .hero-title {
    font-family: var(--serif);
    font-weight: 500;
    font-size: clamp(34px, 7vw, 64px);
    line-height: 1.02;
    letter-spacing: -0.025em;
    margin-bottom: 24px;
    /* fraunces optical size grande */
    font-variation-settings: "opsz" 120;
  }

  .hero-title em {
    font-style: italic;
    font-weight: 400;
    color: var(--brand);
  }

  .hero-lede {
    font-size: clamp(16px, 2.2vw, 19px);
    line-height: 1.6;
    color: var(--ink-soft);
    max-width: 620px;
    margin-bottom: 36px;
  }

  /* identificación · ficha "ID card" */
  .id-card {
    border-top: 2px solid var(--ink);
    border-bottom: 2px solid var(--ink);
    padding: 20px 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 18px 28px;
  }

  .id-field { display: flex; flex-direction: column; gap: 4px; }
  .id-key {
    font-family: var(--mono);
    font-size: 9.5px;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--muted);
  }
  .id-val {
    font-family: var(--sans);
    font-size: 14px;
    font-weight: 500;
    color: var(--ink);
    line-height: 1.35;
  }

  /* ========================================================
     NAVEGACIÓN RÁPIDA (chips arriba)
     ======================================================== */
  .quick-nav {
    max-width: 920px;
    margin: 0 auto;
    padding: 0 var(--pad-page) clamp(40px, 8vw, 64px);
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
  }
  .quick-nav a {
    text-decoration: none;
    border: 1px solid var(--line-strong);
    padding: 7px 13px;
    font-size: 12px;
    font-weight: 500;
    color: var(--ink);
    transition: all 0.15s;
    border-radius: 100px;
  }
  .quick-nav a:hover {
    background: var(--ink);
    color: var(--paper);
    border-color: var(--ink);
  }
  .quick-nav a[data-accent="op"]:hover { background: var(--op); border-color: var(--op); }
  .quick-nav a[data-accent="rc"]:hover { background: var(--rc); border-color: var(--rc); }
  .quick-nav a[data-accent="cv"]:hover { background: var(--cv); border-color: var(--cv); }

  /* ========================================================
     SECCIONES
     ======================================================== */
  .section {
    max-width: 920px;
    margin: 0 auto;
    padding: var(--pad-section) var(--pad-page);
    border-top: 1px solid var(--line);
    position: relative;
  }

  .section-meta {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 18px;
  }

  .section-num {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.2em;
    color: var(--muted);
    text-transform: uppercase;
  }

  .section-tag {
    font-family: var(--mono);
    font-size: 9px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    padding: 3px 8px;
    border: 1px solid currentColor;
  }
  .section-tag[data-doc="op"]  { color: var(--op); }
  .section-tag[data-doc="rc"]  { color: var(--rc); }
  .section-tag[data-doc="cv"]  { color: var(--cv); }
  .section-tag[data-doc="rem"] { color: var(--rem); }
  .section-tag[data-doc="all"] { color: var(--ink); }

  .section h2 {
    font-family: var(--serif);
    font-weight: 500;
    font-size: clamp(28px, 4.5vw, 42px);
    line-height: 1.08;
    letter-spacing: -0.02em;
    margin-bottom: 20px;
    font-variation-settings: "opsz" 72;
  }

  .section-intro {
    font-size: clamp(15px, 2vw, 17px);
    line-height: 1.65;
    color: var(--ink-soft);
    margin-bottom: 28px;
    max-width: 680px;
  }

  .section h3 {
    font-family: var(--serif);
    font-weight: 600;
    font-size: clamp(20px, 2.6vw, 24px);
    letter-spacing: -0.01em;
    margin: 36px 0 12px;
    line-height: 1.2;
  }

  .section h4 {
    font-family: var(--sans);
    font-weight: 700;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin: 24px 0 8px;
  }

  .section p {
    margin-bottom: 14px;
    color: var(--ink-soft);
    max-width: 680px;
  }

  .section p strong { color: var(--ink); font-weight: 600; }

  .section ul, .section ol {
    margin: 8px 0 18px 0;
    padding-left: 22px;
    max-width: 680px;
  }
  .section li { color: var(--ink-soft); margin-bottom: 6px; }
  .section li::marker { color: var(--brand); font-weight: 700; }

  /* link inline */
  .section a { color: var(--brand-deep); text-decoration: underline; text-underline-offset: 3px; }
  .section a:hover { color: var(--brand); }

  /* citas legales · "marginalia" */
  .legal-cite {
    display: inline-block;
    font-family: var(--mono);
    font-size: 10.5px;
    background: var(--paper-soft);
    padding: 1px 6px;
    border-radius: 2px;
    color: var(--ink);
    letter-spacing: 0.01em;
    white-space: nowrap;
  }

  /* callout boxes */
  .callout {
    margin: 20px 0;
    padding: 18px 22px;
    border-left: 3px solid var(--brand);
    background: var(--paper-soft);
    max-width: 680px;
  }
  .callout-title {
    font-family: var(--sans);
    font-weight: 700;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--brand-deep);
    margin-bottom: 8px;
  }
  .callout p { margin-bottom: 8px; font-size: 14.5px; }
  .callout p:last-child { margin-bottom: 0; }

  .callout[data-tone="warn"] { border-left-color: #b8860b; background: #fbf5e3; }
  .callout[data-tone="warn"] .callout-title { color: #6b4e0a; }

  .callout[data-tone="info"] { border-left-color: var(--op); background: #eef3f9; }
  .callout[data-tone="info"] .callout-title { color: var(--op); }

  /* tabla de garantía escalonada */
  .scale-table {
    width: 100%;
    max-width: 680px;
    border-collapse: collapse;
    margin: 16px 0 24px;
    font-size: 14px;
  }
  .scale-table th, .scale-table td {
    text-align: left;
    padding: 10px 12px;
    border-bottom: 1px solid var(--line);
    vertical-align: top;
  }
  .scale-table th {
    font-family: var(--mono);
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--muted);
    border-bottom: 1px solid var(--ink);
    font-weight: 500;
  }
  .scale-table td:first-child {
    font-family: var(--mono);
    font-weight: 600;
    color: var(--brand);
    white-space: nowrap;
  }
  .scale-table td:nth-child(2) { font-weight: 500; color: var(--ink); }
  .scale-table td:nth-child(3) { color: var(--muted); font-size: 13px; }

  /* "pasos" para procedimiento */
  .step-list {
    list-style: none;
    counter-reset: step;
    padding-left: 0;
    margin: 16px 0;
    max-width: 680px;
  }
  .step-list li {
    counter-increment: step;
    padding: 14px 0 14px 52px;
    border-bottom: 1px solid var(--line);
    position: relative;
  }
  .step-list li::before {
    content: counter(step, decimal-leading-zero);
    position: absolute;
    left: 0;
    top: 14px;
    font-family: var(--mono);
    font-size: 11px;
    color: var(--brand);
    letter-spacing: 0.1em;
    font-weight: 600;
  }
  .step-list li::marker { content: none; }
  .step-list > li > strong { display: block; color: var(--ink); margin-bottom: 4px; font-size: 15px; }
  .step-list > li > span { color: var(--ink-soft); font-size: 14px; line-height: 1.55; }

  /* ========================================================
     FOOTER · CONTACTO
     ======================================================== */
  .contact-block {
    max-width: 920px;
    margin: 0 auto;
    padding: var(--pad-section) var(--pad-page);
    background: var(--ink);
    color: var(--paper);
  }
  .contact-block h2 { color: var(--paper); }
  .contact-block .section-intro { color: rgba(254, 253, 251, 0.7); }
  .contact-block .section-num,
  .contact-block .section-tag { color: rgba(254, 253, 251, 0.6); }
  .contact-block .section-tag { border-color: rgba(254, 253, 251, 0.3); }

  .contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 28px 32px;
    margin-top: 32px;
  }
  .contact-field-key {
    font-family: var(--mono);
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    color: rgba(254, 253, 251, 0.5);
    margin-bottom: 6px;
  }
  .contact-field-val {
    font-family: var(--sans);
    font-size: 16px;
    font-weight: 500;
    line-height: 1.45;
  }
  .contact-field-val a {
    color: var(--paper);
    text-decoration: underline;
    text-underline-offset: 4px;
    text-decoration-color: rgba(254, 253, 251, 0.3);
  }
  .contact-field-val a:hover { text-decoration-color: var(--paper); }

  .wa-button {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-top: 24px;
    background: var(--paper);
    color: var(--ink);
    padding: 14px 22px;
    text-decoration: none;
    font-family: var(--sans);
    font-weight: 600;
    font-size: 14px;
    transition: transform 0.15s;
  }
  .wa-button:hover { transform: translateY(-1px); }
  .wa-button:active { transform: translateY(0); }

  /* ========================================================
     FOOTER FINAL
     ======================================================== */
  .colophon {
    max-width: 920px;
    margin: 0 auto;
    padding: 40px var(--pad-page);
    font-family: var(--mono);
    font-size: 10.5px;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    display: flex;
    flex-wrap: wrap;
    gap: 16px 24px;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--line);
  }
  .colophon span { line-height: 1.6; }

  /* ========================================================
     PRINT STYLES · cliente que imprima los términos
     ======================================================== */
  @media print {
    @page { size: A4; margin: 14mm 16mm; }
    body { background: white; font-size: 10pt; line-height: 1.45; }
    .topbar, .toc-overlay, .toc-drawer, .toc-trigger, .quick-nav, .wa-button { display: none !important; }
    .hero { padding: 0 0 20mm; }
    .hero::before { display: none; }
    .section { padding: 12mm 0; border-top: 0.4pt solid #888; max-width: none; break-inside: avoid-page; }
    .section h2 { font-size: 18pt; margin-bottom: 6mm; }
    .section h3 { font-size: 13pt; margin: 6mm 0 2mm; break-after: avoid; }
    .section p, .section li { color: #111; max-width: none; }
    .callout { background: #f5f1ea !important; -webkit-print-color-adjust: exact; print-color-adjust: exact; }
    .contact-block { background: white !important; color: black !important; }
    .contact-block h2, .contact-block .section-intro, .contact-block .contact-field-val { color: black !important; }
    .contact-block .contact-field-val a { color: black !important; }
    .colophon { color: #555; border-top: 0.4pt solid #888; }
    a { color: var(--ink) !important; }
  }

  /* ========================================================
     RESPONSIVO
     ======================================================== */
  @media (max-width: 540px) {
    .id-card { grid-template-columns: 1fr 1fr; gap: 14px 18px; }
    .hero::before { width: 38px; height: 38px; top: 16px; }
    .brand-mark-name { font-size: 15px; }
    .brand-mark-sub { display: none; }
  }