/* =====================================================================
   Panel central — estilo Grupo Nexium
   Fondo carbón, acentos dorados, tipografía Space Grotesk + Inter.
   ===================================================================== */
:root{
  --bg-deep:#050505;
  --bg-surface:#0f0f0f;
  --bg-card:#161616;
  --border-subtle:rgba(212,168,128,.15);
  --border-strong:rgba(212,168,128,.4);
  --gold-soft:#caa867;
  --gold-electric:#ffd700;
  --text-primary:#ffffff;
  --text-secondary:#8e8e93;
  --font-display:'Space Grotesk',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  --font-body:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;

  /* Compatibilidad con variables inyectadas por config.php */
  --color-primary:var(--gold-soft);
  --color-secondary:var(--bg-deep);
}
*{box-sizing:border-box}
body{
  margin:0;
  font-family:var(--font-body);
  font-weight:300;
  color:var(--text-primary);
  min-height:100vh;
  background:
    radial-gradient(1100px 560px at 50% -10%, rgba(202,168,103,.10) 0%, transparent 60%),
    var(--bg-deep);
}

.panel-shell{min-height:100vh;display:flex;flex-direction:column}
.panel-top{
  display:flex;align-items:center;justify-content:space-between;
  padding:20px 32px;
  background:rgba(5,5,5,.75);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--border-subtle);
  position:relative;
}
.panel-top::after{
  content:'';position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg, rgba(212,168,128,0) 0%, var(--gold-soft) 50%, rgba(212,168,128,0) 100%);
  box-shadow:0 0 12px rgba(212,168,128,.5);
}
.panel-brand{
  font-family:var(--font-display);font-weight:600;letter-spacing:.02em;font-size:1.05rem;
}
.panel-logout{
  color:var(--text-secondary);text-decoration:none;font-size:.85rem;
  border:1px solid var(--border-subtle);border-radius:4px;padding:7px 14px;
  transition:border-color .15s ease,color .15s ease;
}
.panel-logout:hover{color:var(--gold-soft);border-color:var(--border-strong)}

.panel-hero{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;padding:60px 20px;
}
.panel-hero h1{
  font-family:var(--font-display);font-weight:600;letter-spacing:-.01em;
  font-size:clamp(1.9rem,4vw,2.6rem);margin:0 0 10px;
}
.panel-question{font-size:1.05rem;color:var(--text-secondary);margin:0 0 44px;font-weight:300}

.site-buttons{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,260px));
  gap:20px;width:100%;max-width:900px;justify-content:center;
}
.site-btn{
  --btn:var(--gold-soft);
  position:relative;display:flex;flex-direction:column;gap:3px;
  text-align:left;text-decoration:none;color:var(--text-primary);
  background:var(--bg-card);
  border:1px solid var(--border-subtle);
  border-left:3px solid var(--btn);
  border-radius:12px;padding:24px 24px;
  transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.site-btn:hover{
  transform:translateY(-6px);
  text-decoration:none;
  border-color:var(--btn);
  box-shadow:0 20px 40px rgba(0,0,0,.6), 0 0 20px rgba(212,168,128,.15);
}
.site-btn-label{
  font-family:var(--font-display);font-size:.72rem;text-transform:uppercase;
  letter-spacing:.14em;color:var(--text-secondary);
}
.site-btn-name{font-family:var(--font-display);font-size:1.3rem;font-weight:600}
.site-btn-arrow{
  position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:1.3rem;color:var(--btn);transition:transform .18s ease;
}
.site-btn:hover .site-btn-arrow{transform:translateY(-50%) translateX(4px)}

.panel-foot{text-align:center;padding:28px;color:var(--text-secondary);font-size:.85rem}

/* Login del panel */
.panel-login-body{display:flex;align-items:center;justify-content:center}
.panel-login-card{
  background:var(--bg-card);border:1px solid var(--border-subtle);
  padding:38px;border-radius:12px;width:100%;max-width:380px;
  box-shadow:0 24px 60px rgba(0,0,0,.6);
}
.panel-login-card h1{
  margin:0 0 24px;font-family:var(--font-display);font-weight:600;
  font-size:1.4rem;text-align:center;letter-spacing:-.01em;
}
.panel-login-card label{
  display:block;margin-bottom:16px;font-size:.82rem;font-weight:500;
  text-transform:uppercase;letter-spacing:.08em;color:var(--text-secondary);
}
.panel-login-card input{
  width:100%;margin-top:8px;padding:12px 14px;border-radius:6px;
  border:1px solid var(--border-subtle);
  background:rgba(255,255,255,.03);color:var(--text-primary);
  font-family:var(--font-body);font-size:1rem;
}
.panel-login-card input:focus{outline:none;border-color:var(--gold-soft)}
.panel-login-card button{
  width:100%;margin-top:10px;padding:13px;border:none;border-radius:4px;
  background:var(--gold-soft);color:var(--bg-deep);
  font-family:var(--font-display);font-weight:600;font-size:.85rem;
  text-transform:uppercase;letter-spacing:.08em;cursor:pointer;
  transition:background .15s ease,transform .15s ease;
}
.panel-login-card button:hover{background:var(--gold-electric);transform:translateY(-1px)}
.panel-error{
  background:rgba(209,36,47,.12);border:1px solid rgba(209,36,47,.4);
  color:#ff8a80;padding:11px 14px;border-radius:6px;margin-bottom:18px;font-size:.88rem;
}

@media(max-width:520px){.panel-hero h1{font-size:1.8rem}}