:root {
  --bg:#f7fafc;
  --card:#ffffff;
  --fg:#0f172a;
  --muted:#475569;

  --border:#e2e8f0;

  --primary:#2563eb;
  --primary-hover:#1d4ed8;
  --primary-contrast:#ffffff;

  --shadow:0 2px 10px rgba(15,23,42,.06);
  --shadow-strong:0 4px 14px rgba(17,24,39,.08);
}

*,
*::before,
*::after{
  box-sizing:border-box;
}

body{
  margin:0;
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  background:var(--bg);
  color:var(--fg);
}

/* Marca de agua con logo Concierge */
body::before{
  content:"";
  position:fixed;
  inset:0;
  margin:auto;
  width:min(720px,80vw);
  height:min(720px,80vw);
  background-image:url('../img/minishop_concierge.png');
  background-repeat:no-repeat;
  background-position:center;
  background-size:contain;
  opacity:0.08;
  pointer-events:none;
  animation:watermarkFade 18s ease-in-out infinite;
}

/* Contenedor general */
.container{
  width:100%;
  max-width:1100px;
  margin:0 auto;
  padding:0 20px;
}

/* HEADER */
.header{
  background:var(--card);
  box-shadow:var(--shadow);
  position:sticky;
  top:0;
  z-index:20;
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:10px 0;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-weight:700;
}
.header-logo{
  height:36px;
}

/* HERO */
.hero{
  background:var(--card);
  padding:60px 0 50px;
  box-shadow:var(--shadow);
}
.hero-inner{
  text-align:center;
}
.hero-logo{
  width:120px;
  margin-bottom:15px;
  opacity:0;
}
.hero-title{
  font-size:clamp(26px,4vw,36px);
  margin:0 0 10px;
}
.hero-subtitle{
  margin:0 auto 25px;
  max-width:600px;
  color:var(--muted);
}
.btn{
  display:inline-block;
  padding:10px 18px;
  border-radius:8px;
  border:1px solid var(--border);
  background:var(--card);
  color:var(--fg);
  text-decoration:none;
  font-size:0.95rem;
  cursor:pointer;
}
.btn.primary{
  background:var(--primary);
  border-color:var(--primary);
  color:var(--primary-contrast);
}
.btn.primary:hover{
  background:var(--primary-hover);
}

/* SECCIONES GENERALES */
.section{
  padding:50px 0;
}
.section-title{
  font-size:1.5rem;
  margin:0 0 25px;
}

/* BENEFICIOS */
.beneficios-grid{
  display:grid;
  gap:18px;
}
.beneficio-card{
  background:var(--card);
  border-radius:10px;
  border:1px solid var(--border);
  padding:16px;
  box-shadow:var(--shadow);
}
.beneficio-card h3{
  margin-top:0;
  margin-bottom:8px;
}

/* PLANES */
.planes-grid{
  display:grid;
  gap:18px;
}
.plan-card{
  background:var(--card);
  border-radius:12px;
  border:1px solid var(--border);
  box-shadow:var(--shadow);
  padding:18px 16px;
}
.plan-card.destacado{
  border:2px solid var(--primary);
  box-shadow:var(--shadow-strong);
}
.plan-card h3{
  margin-top:0;
}
.precio{
  font-size:1.4rem;
  color:var(--primary);
  margin:4px 0 10px;
}
.plan-card ul{
  margin:0;
  padding-left:18px;
}

/* CHAT */
.chat-section{
  background:var(--card);
  box-shadow:var(--shadow);
}
.chat-box{
  background:#eef2ff;
  border-radius:12px;
  border:1px solid #c7d2fe;
  padding:12px;
  height:320px;
  overflow-y:auto;
}
.msg{
  max-width:85%;
  padding:8px 10px;
  border-radius:10px;
  margin:6px 0;
  font-size:0.95rem;
}
.msg.assistant{
  background:#dbeafe;
  align-self:flex-start;
}
.msg.user{
  background:#ffffff;
  margin-left:auto;
}
.chat-input-area{
  display:flex;
  gap:8px;
  margin-top:10px;
}
.chat-input-area input{
  flex:1;
  padding:10px;
  border-radius:8px;
  border:1px solid var(--border);
}
.chat-input-area input:focus{
  outline:none;
  border-color:var(--primary);
}

/* Typing indicator */
.typing-indicator{
  font-size:0.85rem;
  color:var(--muted);
  margin-top:6px;
}
.typing-indicator.hidden{
  display:none;
}
.typing-indicator .dots span{
  animation:blink 1s infinite;
}
.typing-indicator .dots span:nth-child(2){
  animation-delay:0.2s;
}
.typing-indicator .dots span:nth-child(3){
  animation-delay:0.4s;
}

/* FAQ */
.faq-item{
  background:var(--card);
  border-radius:10px;
  border:1px solid var(--border);
  padding:14px 16px;
  margin-bottom:10px;
}
.faq-item h3{
  margin:0 0 6px;
}
.faq-item p{
  margin:0;
  color:var(--muted);
}

/* FOOTER */
.footer{
  padding:20px 0;
  text-align:center;
  color:var(--muted);
  font-size:0.85rem;
}

/* ANIMACIONES */
.fade-in-up{
  opacity:0;
  transform:translateY(20px);
  animation:fadeInUp 0.6s ease forwards;
}
@keyframes fadeInUp{
  to{
    opacity:1;
    transform:translateY(0);
  }
}
@keyframes blink{
  0%,20%{opacity:0;}
  50%{opacity:1;}
  100%{opacity:0;}
}

/* Animación watermark */
@keyframes watermarkFade{
  0%{opacity:0.04;}
  50%{opacity:0.08;}
  100%{opacity:0.04;}
}

/* RESPONSIVE */
@media (min-width:768px){
  .beneficios-grid{
    grid-template-columns:repeat(3,minmax(0,1fr));
  }
  .planes-grid{
    grid-template-columns:repeat(3,minmax(0,1fr));
  }
}