/* Mensajero SaaS - estilos base. Ecom Experts 2026. AFL-3.0 */
:root{
  --green:#25D366; --green-d:#128C7E; --ink:#0b1324; --muted:#64748b;
  --bg:#f8fafc; --card:#fff; --line:#e2e8f0; --radius:14px;
}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.55}
.container{max-width:1080px;margin:0 auto;padding:0 20px}
a{color:var(--green-d);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{line-height:1.2}
.muted{color:var(--muted)}.small{font-size:13px}

/* Header */
.site-header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{font-weight:800;font-size:20px;color:var(--ink)}
.nav-links{display:flex;align-items:center;gap:18px}
.nav-links a{color:var(--ink)}

/* Botones */
.btn{display:inline-block;padding:10px 18px;border-radius:10px;font-weight:600;cursor:pointer;border:0}
.btn-primary{background:var(--green);color:#04240f}
.btn-primary:hover{background:var(--green-d);color:#fff;text-decoration:none}
.btn-ghost{border:1px solid var(--line);background:#fff;color:var(--ink)}
.btn-block{display:block;width:100%;text-align:center}

/* Hero */
.hero{padding:80px 0 60px;text-align:center}
.hero h1{font-size:44px;margin:0 0 16px}
.hero p{font-size:20px;color:var(--muted);max-width:680px;margin:0 auto 28px}
.hero .cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* Secciones */
section{padding:50px 0}
.section-title{text-align:center;font-size:30px;margin-bottom:8px}
.section-sub{text-align:center;color:var(--muted);margin-bottom:36px}
.grid{display:grid;gap:20px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
@media(max-width:860px){.grid-3,.grid-4{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.feature .ico{font-size:30px}

/* Precios */
.plans{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;align-items:stretch}
@media(max-width:860px){.plans{grid-template-columns:1fr}}
.plan{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;display:flex;flex-direction:column}
.plan.popular{border:2px solid var(--green);box-shadow:0 12px 30px rgba(37,211,102,.18)}
.plan h3{margin:0 0 6px}
.plan .price{font-size:38px;font-weight:800}
.plan .price small{font-size:15px;color:var(--muted);font-weight:500}
.plan ul{list-style:none;padding:0;margin:18px 0;flex:1}
.plan li{padding:7px 0;border-bottom:1px dashed var(--line)}
.badge{display:inline-block;background:var(--green);color:#04240f;font-size:12px;font-weight:700;padding:3px 10px;border-radius:20px;margin-bottom:8px}

/* Alertas */
.alert{padding:12px 16px;border-radius:10px;margin:16px 0}
.alert-ok{background:#dcfce7;color:#14532d}
.alert-err{background:#fee2e2;color:#7f1d1d}

/* Formularios */
.form{max-width:480px;margin:0 auto}
.form label{display:block;margin:14px 0 5px;font-weight:600;font-size:14px}
.form input,.form textarea,.form select{width:100%;padding:11px;border:1px solid var(--line);border-radius:10px;font-size:15px}
.auth-card{max-width:440px;margin:50px auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px}

/* Legal / contenido */
.prose{max-width:800px;margin:0 auto;padding:40px 0}
.prose h1{font-size:32px}
.prose h2{margin-top:32px}

/* Footer */
.site-footer{background:#0b1324;color:#cbd5e1;margin-top:60px;padding:40px 0 20px}
.site-footer a{color:#cbd5e1;display:block;padding:3px 0}
.site-footer h4{color:#fff;margin:0 0 10px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px;margin-bottom:24px}
@media(max-width:860px){.footer-grid{grid-template-columns:1fr}}
.site-footer .muted{color:#64748b;border-top:1px solid #1e293b;padding-top:16px}

/* Dashboard (area cliente/admin) */
.app-wrap{display:flex;min-height:100vh}
.sidebar{width:240px;background:#0b1324;color:#cbd5e1;padding:20px;flex-shrink:0}
.sidebar a{display:block;color:#cbd5e1;padding:10px 12px;border-radius:8px;margin-bottom:4px}
.sidebar a.active,.sidebar a:hover{background:#1e293b;color:#fff;text-decoration:none}
.content{flex:1;padding:30px;background:var(--bg)}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
@media(max-width:860px){.stat-grid{grid-template-columns:1fr 1fr}}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.stat .n{font-size:28px;font-weight:800}
.progress{height:10px;background:var(--line);border-radius:6px;overflow:hidden}
.progress>span{display:block;height:100%;background:var(--green)}
table{width:100%;border-collapse:collapse;background:#fff;border-radius:var(--radius);overflow:hidden}
th,td{padding:11px 14px;text-align:left;border-bottom:1px solid var(--line);font-size:14px}
th{background:#f1f5f9}
img{max-width:100%;height:auto}

/* Barra superior móvil con hamburguesa (oculta en escritorio) */
.mtopbar{display:none;align-items:center;gap:12px;background:#0b1324;color:#fff;padding:12px 16px;position:sticky;top:0;z-index:45}
.mburger{background:transparent;border:0;color:#fff;font-size:24px;line-height:1;cursor:pointer;padding:4px 6px}
.mbrand{font-weight:800;font-size:18px}
.nav-backdrop{display:none}
.nav-toggle{display:none;background:transparent;border:0;font-size:26px;line-height:1;cursor:pointer;color:var(--ink);padding:2px 6px}

/* ============ RESPONSIVE (móvil / tablet) ============ */
@media(max-width:860px){
  /* Cabecera pública: hamburguesa que despliega los enlaces (incl. Entrar/Crear cuenta) */
  .nav{height:auto;flex-wrap:wrap;gap:8px;padding:10px 0;align-items:center}
  .nav-toggle{display:block;margin-left:auto}
  .nav-links{display:none;width:100%;flex-direction:column;align-items:stretch;gap:6px;padding:8px 0 4px}
  .nav.open .nav-links{display:flex}
  .nav-links a{padding:10px 4px;border-bottom:1px solid var(--line)}
  .nav-links a:last-child{border-bottom:0}
  .nav-links .btn{text-align:center;border-bottom:0}

  /* Panel cliente/admin: hamburguesa + drawer lateral deslizante */
  .mtopbar{display:flex}
  .app-wrap{flex-direction:column}
  .sidebar{
    position:fixed;top:0;left:-280px;bottom:0;width:260px;
    flex-direction:column;overflow-y:auto;z-index:60;
    transition:left .25s ease;
  }
  body.nav-open .sidebar{left:0}
  body.nav-open .nav-backdrop{display:block;position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:50}
  .sidebar a{display:block;margin-bottom:4px}
  .content{padding:18px 16px}

  /* Tablas: scroll horizontal en vez de desbordar la pantalla */
  table{display:block;overflow-x:auto;white-space:nowrap}

  /* Tipografías grandes */
  .hero{padding:48px 0 36px}
  .hero h1{font-size:32px}
  .hero p{font-size:17px}
  .section-title{font-size:24px}
  section{padding:36px 0}
  .card{padding:18px}
}
@media(max-width:560px){
  .hero h1{font-size:27px}
  .stat-grid{grid-template-columns:1fr 1fr}
  .auth-card{margin:24px 16px;padding:24px}
  .btn{padding:10px 14px}
}