/* ============================================================
   DEMO FACTURA VERIFACTU LIVE — estilos
   Usa tokens globales del :root del index.html (no redefinir).
   --o, --ob, --od, --odd, --bg, --bg2, --bg3, --w, --g, --gd,
   --bd, --bd2, --glass.
   ============================================================ */

.dfac-section{position:relative;overflow:hidden}
.dfac-section::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(800px 400px at 80% 0%, rgba(249,115,22,.08), transparent 60%),
    radial-gradient(700px 380px at 0% 100%, rgba(154,52,18,.10), transparent 60%);
  opacity:.9;
}
.dfac-section > .container{position:relative;z-index:1}

/* ============================================================
   Banner "es una simulación"
   ============================================================ */
.dfac-banner{
  display:inline-flex;align-items:center;gap:10px;
  margin:0 auto 48px;padding:10px 20px;
  background:rgba(249,115,22,.08);
  border:1px solid rgba(249,115,22,.22);
  border-radius:100px;
  font-size:13px;color:var(--w);
  letter-spacing:.2px;
  max-width:max-content;
  box-shadow:0 8px 30px rgba(249,115,22,.06);
}
.section-head + .dfac-banner{display:flex}
.dfac-banner strong{font-family:Syne,sans-serif;color:var(--o);text-transform:uppercase;letter-spacing:1.5px;font-size:11px}
.dfac-banner-sep{color:var(--gd);opacity:.6}
.dfac-banner-dot{
  width:8px;height:8px;border-radius:50%;
  background:var(--o);
  box-shadow:0 0 0 4px rgba(249,115,22,.18);
  animation:dfacPulse 2.4s cubic-bezier(.16,1,.3,1) infinite;
}
@keyframes dfacPulse{
  0%,100%{transform:scale(1);opacity:1}
  50%{transform:scale(1.2);opacity:.7}
}

/* ============================================================
   Grid principal: papel | pasos
   ============================================================ */
.dfac-grid{
  display:grid;
  grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);
  gap:40px;
  align-items:start;
}

/* ============================================================
   Papel factura
   ============================================================ */
.dfac-paper{
  position:relative;
  background:linear-gradient(180deg,#FBFBFB 0%, #F4F4F4 100%);
  color:#0F172A;
  border-radius:18px;
  padding:36px 36px 32px;
  box-shadow:
    0 30px 80px rgba(0,0,0,.45),
    0 6px 20px rgba(0,0,0,.25),
    inset 0 1px 0 rgba(255,255,255,.8);
  border:1px solid rgba(0,0,0,.06);
  font-family:'DM Sans','Inter',sans-serif;
  isolation:isolate;
  overflow:hidden;
}
.dfac-paper::before{
  content:"";position:absolute;inset:0;
  background:repeating-linear-gradient(
    180deg,
    transparent 0 39px,
    rgba(15,23,42,.025) 39px 40px
  );
  pointer-events:none;opacity:.5;
}
.dfac-paper::after{
  content:"DEMO";
  position:absolute;top:50%;left:50%;
  transform:translate(-50%,-50%) rotate(-22deg);
  font-family:Syne,sans-serif;font-weight:800;
  font-size:140px;letter-spacing:8px;
  color:rgba(249,115,22,.07);
  pointer-events:none;
  z-index:0;
  white-space:nowrap;
}
.dfac-paper > *{position:relative;z-index:1}

/* Header */
.dfac-paper-head{
  display:flex;align-items:flex-start;justify-content:space-between;
  gap:24px;flex-wrap:wrap;
  padding-bottom:20px;
  border-bottom:1px solid rgba(15,23,42,.10);
}
.dfac-brand{display:flex;align-items:center;gap:12px}
.dfac-logo{
  width:44px;height:44px;border-radius:12px;
  background:linear-gradient(135deg,var(--o),var(--od));
  color:#fff;display:grid;place-items:center;
  box-shadow:0 6px 20px rgba(249,115,22,.35);
}
.dfac-brand-text{display:flex;flex-direction:column;gap:2px;line-height:1.1}
.dfac-brand-name{font-family:Syne,sans-serif;font-weight:800;font-size:20px;color:#0F172A;letter-spacing:-.5px}
.dfac-brand-sub{font-size:11px;color:#64748B;text-transform:uppercase;letter-spacing:1.2px;font-weight:600}

.dfac-meta{display:flex;flex-direction:column;gap:6px;text-align:right;min-width:200px}
.dfac-meta-row{display:flex;justify-content:space-between;gap:16px;font-size:13px}
.dfac-k{color:#64748B}
.dfac-v{color:#0F172A;font-weight:600}

/* Partes */
.dfac-parties{
  display:grid;grid-template-columns:1fr 1fr;gap:24px;
  padding:22px 0;
  border-bottom:1px solid rgba(15,23,42,.08);
}
.dfac-party{display:flex;flex-direction:column;gap:4px;min-height:108px}
.dfac-party-tag{
  font-size:10px;text-transform:uppercase;letter-spacing:1.6px;font-weight:700;
  color:var(--o);margin-bottom:6px;
}
.dfac-party-name{font-family:Syne,sans-serif;font-weight:700;font-size:17px;color:#0F172A;letter-spacing:-.3px}
.dfac-party-line{font-size:13px;color:#475569}
.dfac-muted{color:#94A3B8;font-style:italic;font-size:11px}

/* Tabla */
.dfac-table-wrap{padding:18px 0 8px}
.dfac-table{display:flex;flex-direction:column}
.dfac-tr{
  display:grid;
  grid-template-columns:1fr 80px 100px 110px;
  gap:12px;align-items:center;
  padding:10px 0;
  border-bottom:1px solid rgba(15,23,42,.06);
  font-size:14px;color:#0F172A;
}
.dfac-thead{
  font-size:10px;text-transform:uppercase;letter-spacing:1.4px;
  color:#64748B;font-weight:700;
  border-bottom:1px solid rgba(15,23,42,.12);
  padding-bottom:8px;
}
.dfac-num{text-align:right;font-variant-numeric:tabular-nums}
.dfac-concept{color:#0F172A;min-height:1.2em}
.dfac-line .dfac-concept,
.dfac-line .dfac-num{
  position:relative;
  transition:opacity .3s cubic-bezier(.16,1,.3,1);
}
.dfac-line.is-typing .dfac-concept::after{
  content:"";display:inline-block;width:2px;height:14px;
  background:var(--o);margin-left:2px;vertical-align:middle;
  animation:dfacCaret 700ms cubic-bezier(.16,1,.3,1) infinite;
}
@keyframes dfacCaret{
  0%,100%{opacity:1}
  50%{opacity:0}
}

/* Totales */
.dfac-totals{padding:18px 0 8px}
.dfac-totals-rows{
  margin-left:auto;max-width:340px;
  display:flex;flex-direction:column;gap:6px;
}
.dfac-totals-row{
  display:flex;justify-content:space-between;align-items:baseline;
  font-size:14px;color:#475569;
}
.dfac-totals-row span:first-child{color:#64748B}
.dfac-totals-row span:last-child{color:#0F172A;font-weight:600}
.dfac-neg{color:#9A3412 !important}
.dfac-totals-grand{
  margin-top:10px;padding-top:14px;
  border-top:2px solid rgba(15,23,42,.12);
  font-size:18px;
}
.dfac-totals-grand span:first-child{
  font-family:Syne,sans-serif;font-weight:800;color:#0F172A;letter-spacing:-.4px;font-size:16px;
}
.dfac-totals-grand span:last-child{
  font-family:'JetBrains Mono',monospace;font-weight:700;color:var(--od);font-size:22px;
}

/* VeriFactu footer */
.dfac-vf{
  margin-top:22px;padding-top:22px;
  border-top:1px dashed rgba(15,23,42,.18);
  display:grid;grid-template-columns:auto 1fr;gap:24px;align-items:center;
}
.dfac-vf-qrcol{display:flex;flex-direction:column;align-items:center;gap:8px}
.dfac-qr{
  width:128px;height:128px;
  background:#FBFBFB;
  border:1px solid rgba(15,23,42,.12);
  border-radius:8px;
  padding:6px;display:grid;place-items:center;
  position:relative;
}
.dfac-qr svg{width:100%;height:100%;display:block}
.dfac-qr-mod{
  fill:var(--od);
  opacity:0;
  transform-origin:center;
  transition:opacity .25s cubic-bezier(.16,1,.3,1);
}
.dfac-qr-mod.is-on{opacity:1}
.dfac-qr-cap{
  font-size:10px;letter-spacing:1.4px;text-transform:uppercase;
  color:#64748B;font-weight:700;
}

.dfac-vf-info{display:flex;flex-direction:column;gap:10px;min-width:0}
.dfac-vf-row{display:flex;flex-direction:column;gap:2px;min-width:0}
.dfac-vf-k{
  font-size:10px;text-transform:uppercase;letter-spacing:1.4px;font-weight:700;
  color:#64748B;
}
.dfac-vf-hash{
  font-size:11px;color:#0F172A;
  background:rgba(15,23,42,.04);
  border:1px solid rgba(15,23,42,.08);
  border-radius:6px;padding:6px 10px;
  word-break:break-all;line-height:1.4;
  min-height:1.4em;
  font-feature-settings:"liga" 0;
}
.dfac-vf-prev{color:#94A3B8;opacity:.7}
.dfac-stamp{
  display:inline-flex;align-items:center;gap:8px;
  margin-top:4px;padding:8px 14px;
  background:rgba(34,197,94,.08);
  border:1px solid rgba(34,197,94,.28);
  border-radius:100px;
  color:#15803D;
  font-family:Syne,sans-serif;font-weight:700;font-size:11px;letter-spacing:1.2px;text-transform:uppercase;
  align-self:flex-start;
  opacity:0;
  transform:rotate(-12deg) scale(.6);
  transition:opacity .55s cubic-bezier(.16,1,.3,1), transform .55s cubic-bezier(.16,1,.3,1);
  pointer-events:none;
}
.dfac-stamp.is-on{
  opacity:1;
  transform:rotate(-2deg) scale(1);
}
.dfac-stamp svg{stroke:#15803D}

/* Mono helper */
.dfac-mono{font-family:'JetBrains Mono','Fira Code',monospace;font-feature-settings:"liga" 0}

/* ============================================================
   Lateral — pasos + controles
   ============================================================ */
.dfac-side{
  position:sticky;top:120px;
  display:flex;flex-direction:column;gap:24px;
}
.dfac-steps{
  list-style:none;padding:0;margin:0;
  display:flex;flex-direction:column;gap:14px;
}
.dfac-step{
  display:grid;
  grid-template-columns:auto 1fr auto;
  align-items:center;gap:18px;
  padding:18px 20px;
  background:var(--glass);
  border:1px solid var(--bd);
  border-radius:16px;
  transition:all .5s cubic-bezier(.16,1,.3,1);
  backdrop-filter:blur(20px);
  position:relative;overflow:hidden;
}
.dfac-step::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:linear-gradient(180deg,var(--o),var(--od));
  transform:scaleY(0);transform-origin:top;
  transition:transform .5s cubic-bezier(.16,1,.3,1);
}
.dfac-step.is-active{
  border-color:rgba(249,115,22,.35);
  background:rgba(249,115,22,.04);
  transform:translateX(4px);
}
.dfac-step.is-active::before{transform:scaleY(1)}
.dfac-step.is-done{
  border-color:rgba(34,197,94,.25);
  background:rgba(34,197,94,.03);
}
.dfac-step.is-done::before{
  background:linear-gradient(180deg,#22C55E,#15803D);
  transform:scaleY(1);
}

.dfac-step-num{
  font-family:'JetBrains Mono',monospace;font-weight:700;font-size:12px;
  color:var(--gd);letter-spacing:1px;
  width:32px;text-align:center;
  transition:color .4s cubic-bezier(.16,1,.3,1);
}
.dfac-step.is-active .dfac-step-num{color:var(--o)}
.dfac-step.is-done .dfac-step-num{color:#22C55E}

.dfac-step-body{display:flex;flex-direction:column;gap:4px;min-width:0}
.dfac-step-body h3{
  font-family:Syne,sans-serif;font-weight:700;font-size:15px;
  color:var(--w);letter-spacing:-.3px;margin:0;
}
.dfac-step-body p{
  font-size:13px;color:var(--g);line-height:1.5;margin:0;
}

.dfac-step-state{
  width:24px;height:24px;border-radius:50%;
  border:2px solid var(--bd2);
  display:grid;place-items:center;flex-shrink:0;
  position:relative;
  transition:all .4s cubic-bezier(.16,1,.3,1);
}
.dfac-step.is-active .dfac-step-state{
  border-color:var(--o);
}
.dfac-step.is-active .dfac-step-state::after{
  content:"";width:10px;height:10px;border-radius:50%;
  background:var(--o);
  animation:dfacSpin 1s cubic-bezier(.16,1,.3,1) infinite;
}
@keyframes dfacSpin{
  0%{transform:scale(.6);opacity:.7}
  50%{transform:scale(1);opacity:1}
  100%{transform:scale(.6);opacity:.7}
}
.dfac-step.is-done .dfac-step-state{
  background:#22C55E;border-color:#22C55E;
}
.dfac-step.is-done .dfac-step-state::after{
  content:"";
  width:11px;height:6px;
  border-left:2px solid #fff;border-bottom:2px solid #fff;
  transform:translateY(-1px) rotate(-45deg);
}

/* Controles */
.dfac-controls{
  display:flex;align-items:center;gap:12px;flex-wrap:wrap;
}
.dfac-btn{padding:12px 22px;font-size:13px}
.dfac-btn svg{display:block}
.dfac-btn-pause[disabled],
.dfac-btn-play[disabled]{
  opacity:.45;cursor:not-allowed;transform:none !important;
}
.dfac-status{
  font-family:'JetBrains Mono',monospace;font-size:12px;
  color:var(--g);letter-spacing:.4px;
  margin-left:auto;
}

/* ============================================================
   LIGHT MODE
   ============================================================ */
html[data-theme="light"] .dfac-section::before{
  background:
    radial-gradient(800px 400px at 80% 0%, rgba(249,115,22,.10), transparent 60%),
    radial-gradient(700px 380px at 0% 100%, rgba(154,52,18,.06), transparent 60%);
}
html[data-theme="light"] .dfac-banner{
  background:rgba(249,115,22,.10);
  border-color:rgba(249,115,22,.30);
  color:#0F172A;
}
html[data-theme="light"] .dfac-banner-sep{color:#64748B}
html[data-theme="light"] .dfac-paper{
  background:linear-gradient(180deg,#FFFFFF 0%, #F8FAFC 100%);
  box-shadow:
    0 30px 60px rgba(15,23,42,.18),
    0 6px 18px rgba(15,23,42,.10),
    inset 0 1px 0 rgba(255,255,255,.9);
  border-color:rgba(15,23,42,.08);
}
html[data-theme="light"] .dfac-step{
  background:rgba(15,23,42,.03);
  border-color:rgba(15,23,42,.10);
  backdrop-filter:none;
}
html[data-theme="light"] .dfac-step-body h3{color:#0F172A}
html[data-theme="light"] .dfac-step-body p{color:#475569}
html[data-theme="light"] .dfac-step.is-active{
  background:rgba(249,115,22,.08);
  border-color:rgba(249,115,22,.40);
}
html[data-theme="light"] .dfac-step.is-done{
  background:rgba(34,197,94,.06);
  border-color:rgba(34,197,94,.35);
}
html[data-theme="light"] .dfac-step-num{color:#94A3B8}
html[data-theme="light"] .dfac-step-state{border-color:rgba(15,23,42,.18)}
html[data-theme="light"] .dfac-status{color:#475569}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width:1100px){
  .dfac-grid{grid-template-columns:1fr;gap:32px}
  .dfac-side{position:static;top:auto}
}
@media (max-width:980px){
  .dfac-paper{padding:28px 24px 24px}
  .dfac-paper::after{font-size:96px}
  .dfac-tr{grid-template-columns:1fr 60px 80px 90px;gap:8px;font-size:13px}
  .dfac-vf{grid-template-columns:1fr;gap:20px;justify-items:center;text-align:center}
  .dfac-vf-info{align-items:center;width:100%}
  .dfac-stamp{align-self:center}
}
@media (max-width:640px){
  .dfac-banner{margin-bottom:32px;padding:8px 14px;font-size:12px}
  .dfac-paper{padding:22px 18px 20px;border-radius:14px}
  .dfac-paper::after{font-size:64px;letter-spacing:4px}
  .dfac-paper-head{gap:14px}
  .dfac-meta{text-align:left;min-width:0;width:100%}
  .dfac-parties{grid-template-columns:1fr;gap:16px;padding:16px 0}
  .dfac-tr{
    grid-template-columns:1fr 50px 70px 80px;
    gap:6px;font-size:12px;
  }
  .dfac-thead{font-size:9px;letter-spacing:1px}
  .dfac-totals-rows{max-width:100%}
  .dfac-totals-grand{font-size:16px}
  .dfac-totals-grand span:last-child{font-size:18px}
  .dfac-qr{width:104px;height:104px}
  .dfac-step{padding:14px 14px;gap:12px}
  .dfac-step-body h3{font-size:14px}
  .dfac-step-body p{font-size:12px}
  .dfac-step-num{width:24px;font-size:11px}
  .dfac-controls{justify-content:center}
  .dfac-status{margin-left:0;width:100%;text-align:center}
}

/* ============================================================
   PREFERS-REDUCED-MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce){
  .dfac-banner-dot,
  .dfac-step.is-active .dfac-step-state::after,
  .dfac-line.is-typing .dfac-concept::after{
    animation:none !important;
  }
  .dfac-step,
  .dfac-stamp,
  .dfac-qr-mod,
  .dfac-line .dfac-concept,
  .dfac-line .dfac-num{
    transition:none !important;
  }
  .dfac-paper::after{display:none}
}