/* ═══════════════════════════════════════════════════════════
   login.css — pantalla de login compartida (Familia A de dashboards)
   Chumbagua · Sistema de Inteligencia Agrícola
   Requiere que assets/css/base.css ya esté cargado (usa las mismas
   variables --brand, --texto, etc.)
   ═══════════════════════════════════════════════════════════ */

#pag-login{
  position:fixed;inset:0;z-index:9999;
  background:linear-gradient(135deg,var(--brand) 0%,#235a52 55%,var(--brand-2) 100%);
  display:flex;align-items:center;justify-content:center;padding:20px;
}
#pag-login.oculto{display:none}
#pag-login::before{
  content:'';position:absolute;top:-100px;right:-100px;width:400px;height:400px;
  background:radial-gradient(circle,rgba(255,255,255,0.1),transparent 70%);border-radius:50%;
}
#pag-login::after{
  content:'';position:absolute;bottom:-150px;left:-150px;width:500px;height:500px;
  background:radial-gradient(circle,rgba(255,255,255,0.08),transparent 70%);border-radius:50%;
}

/* ===== Fondo animado del login (SIAC) ===== */
.csia-bg{position:absolute;inset:0;z-index:0;pointer-events:none;overflow:hidden}
.csia-bg svg{width:100%;height:100%;display:block}
.csia-bg .grid-line{stroke:rgba(255,255,255,0.05);stroke-width:1;vector-effect:non-scaling-stroke}
.csia-bg .area{fill:rgba(255,255,255,0.07);opacity:0;animation:csiaArea 11s ease-in-out infinite}
.csia-bg .trend{fill:none;stroke:rgba(255,255,255,0.55);stroke-width:3.5;stroke-linecap:round;stroke-linejoin:round;vector-effect:non-scaling-stroke;stroke-dasharray:2600;stroke-dashoffset:2600;animation:csiaDraw 11s ease-in-out infinite;filter:drop-shadow(0 0 6px rgba(255,255,255,0.22))}
.csia-bg .trend2{fill:none;stroke:rgba(255,255,255,0.30);stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round;vector-effect:non-scaling-stroke;stroke-dasharray:2600;stroke-dashoffset:2600;animation:csiaDraw2 11s ease-in-out infinite;filter:drop-shadow(0 0 5px rgba(255,255,255,0.12))}
.csia-bg .lead{fill:var(--gold);filter:drop-shadow(0 0 10px rgba(184,132,32,0.95))}
.csia-bg .bar{fill:rgba(255,255,255,0.15);transform-box:fill-box;transform-origin:bottom;transform:scaleY(0);animation:csiaGrow 11s cubic-bezier(.22,1,.36,1) infinite}
.csia-bg .bar.hi{fill:rgba(184,132,32,0.42)}
.csia-bg .pcl{position:absolute;bottom:-10px;border-radius:50%;background:rgba(255,255,255,0.3);animation:csiaRise linear infinite}

@keyframes csiaDraw{0%{stroke-dashoffset:2600;opacity:0}4%{opacity:1}34%{stroke-dashoffset:0}82%{stroke-dashoffset:0;opacity:1}93%{opacity:0}100%{stroke-dashoffset:2600;opacity:0}}
@keyframes csiaDraw2{0%,12%{stroke-dashoffset:2600;opacity:0}18%{opacity:1}46%{stroke-dashoffset:0}85%{stroke-dashoffset:0;opacity:1}94%{opacity:0}100%{stroke-dashoffset:2600;opacity:0}}
@keyframes csiaArea{0%,30%{opacity:0}46%{opacity:1}82%{opacity:1}93%,100%{opacity:0}}
@keyframes csiaGrow{0%,8%{transform:scaleY(0)}34%{transform:scaleY(1)}82%{transform:scaleY(1)}95%,100%{transform:scaleY(0)}}
@keyframes csiaRise{0%{transform:translateY(0);opacity:0}15%{opacity:.5}85%{opacity:.5}100%{transform:translateY(-105vh);opacity:0}}

/* la tarjeta SIEMPRE por encima del fondo */
#pag-login .login-box{position:relative;z-index:2}

@media (prefers-reduced-motion:reduce){
  .csia-bg .trend,.csia-bg .trend2,.csia-bg .area,.csia-bg .bar,.csia-bg .pcl{animation:none}
  .csia-bg .trend,.csia-bg .trend2{stroke-dashoffset:0;opacity:1}
  .csia-bg .area,.csia-bg .lead{opacity:1}.csia-bg .bar{transform:scaleY(1)}
}
@media (max-width:640px){
  .csia-bg .bars,.csia-bg .trend2{display:none}
}

.login-box{
  background:#fff;border-radius:16px;padding:40px 44px;width:100%;max-width:400px;text-align:center;
  box-shadow:0 20px 60px rgba(0,0,0,0.3);position:relative;z-index:1;
}
.login-logo-wrap{
  width:56px;height:56px;
  background:linear-gradient(135deg, #1e3f7a 0%, #2d6e3e 100%);
  border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-weight:800;font-size:18px;letter-spacing:0px;
  margin:0 auto 18px;
  box-shadow:0 6px 20px rgba(30,63,122,0.3);
  position:relative;overflow:hidden;
}
.login-logo-wrap::before{
  content:'';position:absolute;inset:0;
  background-image:url("data:image/svg+xml;utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 100' preserveAspectRatio='none'%3E%3Cpath d='M0 48 L18 32 L34 46 L56 24 L74 42 L100 28 L100 100 L0 100 Z' fill='rgba(255,255,255,0.20)'/%3E%3C/svg%3E");
  background-size:cover;background-position:center;
  pointer-events:none;
}
.login-logo-wrap > span{position:relative;z-index:1}
.login-logo{font-size:24px;font-weight:600;color:var(--texto);letter-spacing:-0.5px}
.login-sub{font-size:11px;color:var(--brand-2);font-weight:600;margin-top:4px;margin-bottom:28px;letter-spacing:1.5px;text-transform:uppercase;font-family:'Geist Mono',monospace}
.login-titulo{font-size:13px;color:var(--texto-soft);margin-bottom:18px;text-align:left;font-weight:500}
.login-input{
  width:100%;padding:11px 14px;border:1px solid var(--gris-borde);border-radius:8px;
  font-size:14px;margin-bottom:10px;outline:none;font-family:inherit;transition:border-color .15s, box-shadow .15s;
}
.login-input:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
.login-btn{
  width:100%;padding:12px;background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#fff;border:none;border-radius:8px;font-family:inherit;font-size:14px;font-weight:600;
  cursor:pointer;margin-top:8px;transition:transform .15s, box-shadow .15s;
}
.login-btn:hover{transform:translateY(-1px);box-shadow:0 6px 16px rgba(30,63,122,0.25)}
.login-btn:disabled{background:#aaa;cursor:not-allowed;transform:none;box-shadow:none}
.login-error{color:var(--neg);font-size:12px;margin-top:10px;min-height:18px}