/* =============================================================
   1. Tokens
   ============================================================= */
:root{
  --ink:#0F1B2D;
  --ink-soft:#57657A;
  --paper:#FFFFFF;
  --bg:#F6F4EF;
  --bg-soft:#EEEAE0;
  --navy:#0F1B2D;
  --navy-2:#18283F;
  --gold:#AB8542;
  --gold-hover:#93702F;
  --gold-soft:#F3ECDC;
  --accent:#0F1B2D;
  --accent-hover:#18283F;
  --accent-soft:#E8EBF1;
  --success:#1E7A52;
  --success-soft:#E3F2EA;
  --danger:#A83A3A;
  --danger-soft:#F8EAEA;
  --warn:#AB8542;
  --warn-soft:#F3ECDC;
  --border:#DEE2E9;
  --radius:12px;
  --font-display:'Fraunces',serif;
  --font-body:'Inter',sans-serif;
  --shadow-sm:0 2px 10px -5px rgba(15,27,45,.18);
  --shadow-md:0 20px 40px -20px rgba(15,27,45,.35);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

/* =============================================================
   2. Reset & base
   ============================================================= */
*,*::before,*::after{box-sizing:border-box;margin:0;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  font-family:var(--font-body);font-size:16px;line-height:1.6;color:var(--ink);
  background-color:var(--bg);
  background-image:
    radial-gradient(ellipse 900px 500px at 12% -5%, rgba(15,27,45,.05), transparent 60%),
    radial-gradient(ellipse 700px 420px at 100% 15%, rgba(171,133,66,.07), transparent 60%);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;overflow-x:clip;
}
img,svg{display:block;max-width:100%;}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none;}
a{color:inherit;text-decoration:none;}
h1,h2,h3,h4{font-family:var(--font-display);line-height:1.15;letter-spacing:-.01em;font-weight:600;color:var(--ink);}
p{color:var(--ink-soft);}
[hidden]{display:none !important;}
::selection{background:var(--accent-soft);color:var(--accent-hover);}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}
input,select,textarea{font:inherit;color:var(--ink);}

/* =============================================================
   3. Utilities
   ============================================================= */
.skip-link{position:fixed;top:-100px;left:1rem;padding:.6rem 1rem;background:var(--ink);color:#fff;z-index:9999;border-radius:8px;font-weight:600;}
.skip-link:focus{top:1rem;}
.container{max-width:1120px;margin:0 auto;padding:0 24px;}
.pill{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:20px;font-size:.8rem;font-weight:600;}
.pill-accent{background:var(--accent-soft);color:var(--accent-hover);}
.pill-warn{background:var(--warn-soft);color:var(--warn);}
.badge-demo{display:inline-flex;align-items:center;gap:6px;background:var(--warn-soft);color:var(--warn);border:1px solid rgba(201,130,30,.3);padding:6px 12px;border-radius:10px;font-size:.82rem;font-weight:600;}

/* =============================================================
   4. Buttons & form controls
   ============================================================= */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:10px;font-weight:600;font-size:.96rem;
  transition:background .15s var(--ease-out),transform .15s var(--ease-out),box-shadow .2s var(--ease-out);
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--shadow-sm);}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px);}
.btn-primary:disabled{opacity:.55;cursor:not-allowed;transform:none;}
.btn-ghost{background:none;color:var(--ink);border:1px solid var(--border);}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);}
.btn-danger{background:var(--danger-soft);color:var(--danger);}
.btn-danger:hover{background:var(--danger);color:#fff;}
.btn-sm{padding:8px 14px;font-size:.85rem;border-radius:8px;}
.btn-block{width:100%;}

.field{display:flex;flex-direction:column;gap:6px;margin-bottom:16px;}
.field label{font-size:.85rem;font-weight:600;color:var(--ink);}
.field input,.field select,.field textarea{
  padding:11px 14px;border:1px solid var(--border);border-radius:10px;background:var(--paper);
  transition:border-color .15s;
}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--accent);outline:none;}
.field textarea{resize:vertical;min-height:80px;}
.field-hint{font-size:.78rem;color:var(--ink-soft);}
.field-row{display:flex;gap:12px;}
.field-row .field{flex:1;}

.card{background:var(--paper);border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-sm);}

/* =============================================================
   5. Topbar (shared: landing + app)
   ============================================================= */
.topbar{
  position:sticky;top:0;z-index:40;background:var(--navy);
  border-bottom:1px solid rgba(171,133,66,.4);
}
.topbar-inner{max-width:1120px;margin:0 auto;padding:16px 24px;display:flex;align-items:center;justify-content:space-between;}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--font-display);font-weight:700;font-size:1.15rem;color:#fff;}
.brand-mark{width:34px;height:34px;border-radius:8px;background:linear-gradient(155deg,#D9BB7A,var(--gold) 60%,var(--gold-hover));display:flex;align-items:center;justify-content:center;color:var(--navy);font-weight:700;font-size:.92rem;box-shadow:0 3px 10px -3px rgba(171,133,66,.6);}
.topnav{display:flex;align-items:center;gap:26px;}
.topnav a{color:#B7C0CE;font-weight:500;font-size:.94rem;}
.topnav a:hover{color:#fff;}
.topnav-mobile-hide{display:flex;gap:26px;align-items:center;}
@media (max-width:720px){.topnav-mobile-hide{display:none;}}
.topbar .btn-ghost{border-color:rgba(255,255,255,.3);color:#fff;}
.topbar .btn-ghost:hover{border-color:var(--gold);color:var(--gold);}

/* =============================================================
   6. Sections — landing
   ============================================================= */
.hero{padding:72px 24px 40px;max-width:900px;margin:0 auto;text-align:center;}
.eyebrow{display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--gold-hover);background:var(--gold-soft);border:1px solid rgba(171,133,66,.35);padding:6px 14px;border-radius:20px;margin-bottom:20px;}
.hero h1{font-size:clamp(2rem,4.6vw,3.1rem);margin-bottom:18px;}
.hero .subtitle{font-size:1.1rem;max-width:640px;margin:0 auto 32px;}
.hero-ctas{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-bottom:14px;}
.hero-note{font-size:.85rem;color:var(--ink-soft);}

.demo-card{max-width:760px;margin:48px auto 0;background:var(--paper);border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow-md);overflow:hidden;text-align:left;}
.demo-card-head{background:var(--navy);color:#fff;padding:18px 24px;display:flex;align-items:center;justify-content:space-between;border-bottom:3px solid var(--gold);}
.demo-card-head strong{font-family:var(--font-display);font-size:1.05rem;letter-spacing:.02em;}
.demo-card-head span{font-size:.85rem;color:var(--gold);font-weight:600;}
.demo-card-body{padding:24px;}
.demo-line{display:flex;justify-content:space-between;padding:10px 0;border-bottom:1px dashed var(--border);font-size:.94rem;}
.demo-line:last-of-type{border-bottom:none;}
.demo-total{display:flex;justify-content:space-between;padding-top:14px;font-weight:700;font-size:1.1rem;}

section.steps,section.pricing,section.faq{max-width:1080px;margin:0 auto;padding:64px 24px;}
section h2{text-align:center;font-size:1.7rem;margin-bottom:44px;}

.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.step-card{background:var(--paper);border:1px solid var(--border);border-radius:16px;padding:26px 22px;}
.step-num{display:inline-flex;width:34px;height:34px;border-radius:50%;background:var(--navy);color:var(--gold);align-items:center;justify-content:center;font-weight:700;margin-bottom:14px;font-family:var(--font-display);}
.step-card h3{font-size:1.05rem;margin-bottom:6px;}
.step-card p{font-size:.92rem;margin:0;}

.pricing-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;max-width:760px;margin:0 auto;}
.plan-card{background:var(--paper);border:1px solid var(--border);border-radius:16px;padding:32px 28px;position:relative;}
.plan-card.destacado{border-color:var(--gold);box-shadow:var(--shadow-md);}
.plan-tag{position:absolute;top:-13px;left:28px;background:var(--gold);color:var(--navy);font-size:.75rem;font-weight:700;padding:5px 12px;border-radius:20px;}
.plan-name{font-size:1.2rem;margin-bottom:4px;}
.plan-price{display:flex;align-items:baseline;gap:6px;margin:12px 0 18px;}
.plan-price strong{font-family:var(--font-display);font-size:2.4rem;color:var(--ink);}
.plan-price span{color:var(--ink-soft);font-size:.9rem;}
.plan-features{list-style:none;padding:0;margin:0 0 24px;display:flex;flex-direction:column;gap:10px;}
.plan-features li{display:flex;align-items:flex-start;gap:8px;font-size:.92rem;color:var(--ink-soft);}
.plan-features li::before{content:"✓";color:var(--success);font-weight:700;}

.faq-list{max-width:760px;margin:0 auto;border-top:1px solid var(--border);}
.faq-item{border-bottom:1px solid var(--border);}
.faq-q{width:100%;text-align:left;padding:20px 4px;font-weight:600;display:flex;justify-content:space-between;align-items:center;}
.faq-q .plus{color:var(--accent);font-size:1.2rem;transition:transform .2s;}
.faq-item.open .plus{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease;font-size:.94rem;}
.faq-item.open .faq-a{max-height:220px;padding-bottom:18px;}

footer.site-footer{background:var(--navy);color:#9FAAC0;padding:40px 24px;margin-top:20px;border-top:3px solid var(--gold);}
footer.site-footer .container{display:flex;justify-content:space-between;flex-wrap:wrap;gap:16px;align-items:center;}
footer.site-footer strong{color:#fff;font-family:var(--font-display);}
.legal-links{display:flex;gap:18px;flex-wrap:wrap;}
.legal-links a{color:#9FAAC0;font-size:.86rem;}
.legal-links a:hover{color:var(--gold);}

/* =============================================================
   7. Modals (auth + checkout)
   ============================================================= */
.modal-overlay{position:fixed;inset:0;background:rgba(21,26,46,.55);display:flex;align-items:center;justify-content:center;z-index:80;padding:20px;}
.modal{background:var(--paper);border-radius:20px;max-width:420px;width:100%;padding:30px;box-shadow:var(--shadow-md);position:relative;max-height:90vh;overflow-y:auto;}
.modal-close{position:absolute;top:16px;right:16px;width:30px;height:30px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--ink-soft);font-size:1.1rem;}
.modal-close:hover{background:var(--bg-soft);}
.modal h2{font-size:1.3rem;margin-bottom:6px;}
.modal-sub{font-size:.88rem;margin-bottom:22px;}
.modal-tabs{display:flex;gap:6px;background:var(--bg-soft);border-radius:10px;padding:4px;margin-bottom:20px;}
.modal-tabs button{flex:1;padding:9px;border-radius:8px;font-weight:600;font-size:.88rem;color:var(--ink-soft);}
.modal-tabs button.active{background:var(--paper);color:var(--ink);box-shadow:var(--shadow-sm);}
.modal-error{background:var(--danger-soft);color:var(--danger);padding:10px 14px;border-radius:10px;font-size:.86rem;margin-bottom:16px;}
.checkout-card{border:1px solid var(--border);border-radius:12px;padding:16px;margin:16px 0;background:var(--bg-soft);}
.fake-card-input{font-family:ui-monospace,monospace;letter-spacing:.05em;background:var(--bg-soft);color:var(--ink-soft);}

/* =============================================================
   8. App shell (app.html + cuenta.html)
   ============================================================= */
.app-topbar{background:var(--navy);border-bottom:1px solid rgba(171,133,66,.4);position:sticky;top:0;z-index:30;}
.app-topbar-inner{max-width:1120px;margin:0 auto;padding:14px 24px;display:flex;align-items:center;justify-content:space-between;}
.app-nav{display:flex;gap:4px;background:rgba(255,255,255,.08);padding:4px;border-radius:10px;}
.app-nav a{padding:9px 16px;border-radius:8px;font-weight:600;font-size:.9rem;color:#B7C0CE;}
.app-nav a.active,.app-nav a:hover{background:rgba(255,255,255,.12);color:#fff;}
.credits-pill{display:flex;align-items:center;gap:8px;background:rgba(171,133,66,.18);color:var(--gold);border:1px solid rgba(171,133,66,.4);padding:7px 14px;border-radius:20px;font-weight:700;font-size:.88rem;}
.credits-pill.ilimitado{background:rgba(30,122,82,.2);color:#5FCB99;border-color:rgba(95,203,153,.4);}
.app-topbar .account-menu a{color:#B7C0CE;font-size:.88rem;font-weight:600;}
.app-topbar .account-menu a:hover{color:#fff;}
.app-topbar .account-menu button{color:#B7C0CE;}
.app-topbar .account-menu button:hover{color:#E7A3A3;}
.account-menu{display:flex;align-items:center;gap:14px;}
.account-menu button{color:var(--ink-soft);font-size:.88rem;font-weight:600;}
.account-menu button:hover{color:var(--danger);}

.app-main{max-width:1120px;margin:0 auto;padding:32px 24px 80px;}
.app-header{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:24px;flex-wrap:wrap;gap:12px;}
.app-header h1{font-size:1.5rem;}

.tabla{width:100%;border-collapse:collapse;background:var(--paper);border:1px solid var(--border);border-radius:14px;overflow:hidden;}
.tabla th,.tabla td{text-align:left;padding:13px 16px;font-size:.9rem;border-bottom:1px solid var(--border);}
.tabla th{background:var(--bg-soft);color:var(--ink-soft);font-weight:600;font-size:.78rem;text-transform:uppercase;letter-spacing:.03em;}
.tabla tr:last-child td{border-bottom:none;}
.tabla-empty{padding:36px;text-align:center;color:var(--ink-soft);font-size:.92rem;}

.estado-tag{display:inline-flex;align-items:center;gap:5px;padding:4px 10px;border-radius:20px;font-size:.78rem;font-weight:700;}
.estado-pendiente{background:var(--warn-soft);color:var(--warn);}
.estado-pagada{background:var(--success-soft);color:var(--success);}

.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start;}
@media (max-width:860px){.form-grid{grid-template-columns:1fr;}}

.linea-factura{display:grid;grid-template-columns:1fr 70px 100px 100px 32px;gap:8px;align-items:center;margin-bottom:8px;}
.linea-factura input{padding:9px 10px;font-size:.88rem;}
.linea-subtotal{font-size:.88rem;font-weight:600;text-align:right;}
.linea-quitar{color:var(--ink-soft);font-size:1.1rem;}
.linea-quitar:hover{color:var(--danger);}
.lineas-head{display:grid;grid-template-columns:1fr 70px 100px 100px 32px;gap:8px;font-size:.72rem;color:var(--ink-soft);text-transform:uppercase;letter-spacing:.03em;margin-bottom:8px;font-weight:600;}
.factura-total-row{display:flex;justify-content:flex-end;gap:14px;align-items:baseline;margin-top:14px;padding-top:14px;border-top:1px solid var(--border);}
.factura-total-row strong{font-size:1.3rem;font-family:var(--font-display);}

.ia-asistente{background:var(--accent-soft);border:1px solid rgba(43,84,217,.25);border-radius:14px;padding:18px;margin-bottom:20px;}
.ia-asistente-head{display:flex;align-items:center;gap:8px;font-weight:700;color:var(--accent-hover);margin-bottom:10px;font-size:.92rem;}

.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(8px);background:var(--ink);color:#fff;padding:13px 20px;border-radius:12px;font-size:.9rem;box-shadow:var(--shadow-md);opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;z-index:100;max-width:90vw;text-align:center;}
.toast.mostrar{opacity:1;transform:translateX(-50%) translateY(0);}
.toast.error{background:var(--danger);}

.upgrade-modal .plan-price{justify-content:center;}
.logo-preview{width:64px;height:64px;border-radius:10px;border:1px solid var(--border);object-fit:contain;background:var(--bg-soft);}
.cuenta-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
@media (max-width:860px){.cuenta-grid{grid-template-columns:1fr;}}
.dato-linea{display:flex;justify-content:space-between;padding:10px 0;border-bottom:1px solid var(--border);font-size:.92rem;}
.dato-linea:last-child{border-bottom:none;}
.dato-linea span:first-child{color:var(--ink-soft);}

/* =============================================================
   9. Legal pages
   ============================================================= */
.legal-main{max-width:760px;margin:0 auto;padding:48px 24px 70px;}
.legal-main h1{font-size:1.9rem;margin-bottom:6px;}
.legal-main .updated{color:var(--ink-soft);font-size:.85rem;margin-bottom:32px;}
.legal-main h2{font-size:1.2rem;margin-top:32px;margin-bottom:10px;}
.legal-main p,.legal-main li{font-size:.96rem;}
.legal-main ul{padding-left:1.2em;}

/* =============================================================
   10. Responsive
   ============================================================= */
@media (max-width:720px){
  .steps-grid{grid-template-columns:1fr;}
  .pricing-grid{grid-template-columns:1fr;}
  .app-nav{overflow-x:auto;}
  footer.site-footer .container{flex-direction:column;align-items:flex-start;}
}

/* =============================================================
   11. Reduced motion
   ============================================================= */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  .btn,.toast{transition:none;}
}