/* ==============================
   VARIABLES
================================ */
:root {
    --oro: #d4af37;
    --oscuro: #0b0b0b;
    --negro: #000;
    --texto: #eaeaea;
    --gris: #999;
}

/* ==============================
   RESET
================================ */
*{
    margin:0;
    padding:0;
    box-sizing:border-box;
}

body.lectura-body{
    font-family:Arial, Helvetica, sans-serif;
    background: radial-gradient(circle at top, #111, #000 70%);
    color:var(--texto);
    min-height:100vh;
}

/* ==============================
   NAVBAR
================================ */

.navbar{
    background:rgba(0,0,0,0.9);
    border-bottom:1px solid rgba(212,175,55,0.25);
}

.nav-container{
    max-width:1100px;
    margin:auto;
    padding:12px 20px;
    display:flex;
    justify-content:space-between;
    align-items:center;
}

.logo{
    color:var(--oro);
    text-decoration:none;
    letter-spacing:2px;
    font-size:0.9rem;
}

.nav-links{
    list-style:none;
    display:flex;
    gap:18px;
}

.nav-links a{
    color:var(--texto);
    text-decoration:none;
    font-size:0.85rem;
}

.nav-links a:hover{
    color:var(--oro);
}

/* ==============================
   DROPDOWN
================================ */

.dropdown{
    position:relative;
}

.dropdown-content{
    display:none;
    position:absolute;
    background:#0b0b0b;
    border:1px solid rgba(212,175,55,0.25);
    border-radius:6px;
    min-width:200px;
    padding:8px 0;
    z-index:100;
}

.dropdown:hover .dropdown-content{
    display:block;
}

.dropdown-content li a{
    display:block;
    padding:8px 16px;
    font-size:0.8rem;
}

/* ==============================
   CONTENEDOR
================================ */

.container{
    max-width:700px;
    margin:auto;
    padding:40px 20px 60px;
}

/* ==============================
   CABECERA
================================ */

.oro-texto{
    color:var(--oro);
    letter-spacing:3px;
    font-size:0.7rem;
    text-transform:uppercase;
}

/* ==============================
   TARJETA IMC
================================ */

.imc-card{
    margin-top:40px;
    background:rgba(255,255,255,0.04);
    padding:30px;
    border-radius:12px;
    border-left:4px solid var(--oro);
}

/* ==============================
   INPUTS
================================ */

.input-group{
    display:flex;
    flex-direction:column;
    margin-bottom:18px;
}

.input-group label{
    font-size:0.85rem;
    margin-bottom:6px;
    color:var(--gris);
}

.input-group input{
    padding:10px;
    border-radius:6px;
    border:1px solid #333;
    background:#000;
    color:#fff;
    font-size:0.9rem;
}

.input-group input:focus{
    outline:none;
    border-color:var(--oro);
}

/* ==============================
   BOTONES
================================ */

.btn{
    padding:10px 18px;
    border-radius:6px;
    border:none;
    cursor:pointer;
    font-size:0.85rem;
    transition:all 0.3s ease;
}

.btn:hover{
    opacity:0.85;
}

/* ==============================
   RESULTADO IMC
================================ */

#resultado-caja{
    display:none;
    margin-top:25px;
    padding:20px;
    border-radius:10px;
    text-align:center;
    transition: all 0.4s ease;
        
}

.valor-imc{
    font-size:2.8rem;
    font-weight:bold;
}

.mensaje-imc{
    margin-top:10px;
    font-size:0.9rem;
}

/* ==============================
   MEDIDOR IMC (BARRA)
================================ */

.medidor-imc{
    margin-top:30px;
    width:100%;
}

.barra-imc{
    position:relative;
    display:flex;
    height:25px;
    width:100%;
    border-radius:12px;
    overflow:hidden;
    background:#333;
}

.zona{
    flex:1;
}

.bajo{
    background:#f1c40f;
}

.normal{
    background:#2ecc71;
}

.sobrepeso{
    background:#e67e22;
}

.obesidad{
    background:#e74c3c;
}

.labels-imc{
    display:flex;
    justify-content:space-between;
    margin-top:8px;
    font-size:12px;
    color:#aaa;
}







/* ==============================
   RESPONSIVE
================================ */

@media (max-width:600px){

    h1{
        font-size:1.8rem !important;
    }

    .imc-card{
        padding:22px;
    }

}

.modal {
    display: none;
    position: fixed;
    z-index: 999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.7);
  }
  
  .modal-contenido {
    background: #111;
    color: #fff;
    margin: 10% auto;
    padding: 20px;
    border-radius: 12px;
    width: 90%;
    max-width: 400px;
    text-align: center;
  }
  
  .cerrar {
    float: right;
    font-size: 24px;
    cursor: pointer;
  }