/*==================================================
    IDIOMAS GV
    Página del eBook
    aprende-ingles-exito.css
==================================================*/

:root{
    --gv-blue:#0D3B66;
    --gv-green:#27AE60;
    --gv-light:#F7F9FC;
    --gv-gray:#555;
    --gv-white:#FFFFFF;

    --shadow:0 10px 30px rgba(0,0,0,.08);
    --shadow-hover:0 20px 45px rgba(0,0,0,.15);

    --radius:20px;
    --transition:.3s ease;
}

/* ================= HEADER ================= */

header{
    position:sticky;
    top:0;
    width:100%;
    background:#0B2D5C;
    z-index:1000;
    box-shadow:0 4px 15px rgba(0,0,0,.18);
}

.navbar{
    max-width:1400px;
    height:105px;
    margin:0 auto;
    padding:0 50px;
    display:flex;
    align-items:center;
}

.logo{
    width:150px;
    height:auto;
    margin-right:25px;
}

.partner-badge{
    display:flex;
    align-items:center;
    gap:10px;
    padding:10px 18px;
    margin-right:70px;
    background:#fff;
    border-radius:30px;
    cursor:pointer;
    transition:var(--transition);
}

.partner-badge:hover{
    transform:translateY(-2px);
    box-shadow:0 6px 18px rgba(0,0,0,.15);
}

.partner-badge img{
    width:40px;
    height:40px;
    object-fit:contain;
}

.partner-badge span{
    color:#0A2A66;
    font-size:14px;
    font-weight:600;
    white-space:nowrap;
}

nav{
    display:flex;
    align-items:center;
    gap:40px;
    margin-left:auto;
}

.navbar nav a{
    color:#fff;
    text-decoration:none;
    font-size:17px;
    font-weight:600;
    transition:var(--transition);
}

.navbar nav a:hover{
    color:#2ECC71;
}

/* ================= EBOOK ================= */

.ebook-page{
    width:min(1200px,80%);
    margin:20px auto 70px;
    display:grid;
    grid-template-columns:300px 1fr;
    gap:10px;
    align-items:center;
}

.ebook-cover{
    width:100%;
    max-width:250px;
    margin:0 auto;
    padding-top:15px;
}

.ebook-cover img{
    width:100%;
    display:block;
    border-radius:20px;
    box-shadow:var(--shadow-hover);
    transition:var(--transition);
}

.ebook-cover img:hover{
    transform:scale(1.03);
    box-shadow:0 25px 55px rgba(0,0,0,.18);
}

.ebook-details h1{
    color:var(--gv-blue);
    font-size:3rem;
    margin:10px 0;
}

.ebook-level{
    display:inline-block;
    background:var(--gv-blue);
    color:#fff;
    padding:6px 15px;
    border-radius:30px;
    font-size:.85rem;
}

.ebook-subtitle{
    color:var(--gv-gray);
    line-height:1.8;
    font-size:1.15rem;
    margin-bottom:35px;
}

.ebook-meta{
    display:flex;
    flex-wrap:wrap;
    gap:10px;
    margin-bottom:35px;
}

.ebook-meta span{
    background:#F4F4F4;
    padding:8px 14px;
    border-radius:25px;
    font-size:.9rem;
}

.ebook-buttons{
    display:flex;
    flex-wrap:wrap;
    gap:18px;
    margin-top:40px;
}

.download-btn,
.preview-btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    min-width:210px;
    padding:15px 32px;
    border-radius:40px;
    color:#fff;
    text-decoration:none;
    font-weight:600;
    transition:var(--transition);
}

.download-btn{background:var(--gv-green);}
.download-btn:hover{background:#1f8a4c;}

.preview-btn{background:var(--gv-blue);}
.preview-btn:hover{background:#082746;}

.ebook-content{
    width:min(1000px,92%);
    margin:20px auto 40px;
}

.ebook-content section{
    margin-bottom:20px;
}

.ebook-content h2{
    color:var(--gv-blue);
    font-size:2rem;
    margin-bottom:20px;
}

.specs-grid{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:20px;
}

.spec{
    background:var(--gv-light);
    padding:25px;
    border-radius:18px;
    transition:var(--transition);
}

.spec:hover{
    transform:translateY(-6px);
    box-shadow:var(--shadow);
}

.spec strong{
    display:block;
    margin-bottom:10px;
    color:var(--gv-blue);
    font-size:.82rem;
    text-transform:uppercase;
}

.spec span{
    color:var(--gv-gray);
}

.ebook-description p{
    max-width:900px;
    line-height:1.5;
    color:var(--gv-gray);
    margin-bottom:20px;
}

.ebook-description ul{
    list-style:none;
    padding:0;
}

.ebook-description li{
    margin-bottom:15px;
    color:#444;
    font-size:1.05rem;
}
.download-modal{
    display:none;
    position:fixed;
    inset:0;
    background:rgba(0,0,0,.65);
    justify-content:center;
    align-items:center;
    z-index:9999;
}

.download-modal-content{

    background:#fff;
    width:90%;
    max-width:450px;

    padding:35px;

    border-radius:18px;

    text-align:center;

}

.download-modal-content h2{

    color:#0B2D5C;
    margin-bottom:10px;

}

.download-modal-content p{

    margin-bottom:25px;

}

.download-modal-content input{

    width:100%;

    padding:14px;

    margin-bottom:15px;

    border-radius:10px;

    border:1px solid #ccc;

    font-size:16px;

}

.download-modal-content button{

    width:100%;

    background:#24b35b;

    color:white;

    border:none;

    padding:15px;

    border-radius:10px;

    font-size:17px;

    cursor:pointer;

}

.close-download{

    float:right;

    font-size:30px;

    cursor:pointer;

}

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

@media (max-width:992px){

    .ebook-page{
        grid-template-columns:1fr;
        text-align:center;
    }

    .ebook-meta,
    .ebook-buttons{
        justify-content:center;
    }

    .specs-grid{
        grid-template-columns:repeat(3,1fr);
    }
}

@media (max-width:768px){

    .navbar{
        flex-direction:column;
        height:auto;
        padding:15px;
        gap:15px;
    }

    nav{
        flex-wrap:wrap;
        justify-content:center;
        gap:18px;
        margin-left:0;
    }

    .partner-badge{
        margin-right:0;
    }

    .ebook-page{
        gap:40px;
    }

    .ebook-details h1{
        font-size:2.2rem;
    }

    .ebook-subtitle{
        font-size:1rem;
    }

    .ebook-buttons{
        flex-direction:column;
    }

    .download-btn,
    .preview-btn{
        width:100%;
    }

    .specs-grid{
        grid-template-columns:1fr;
    }

    .ebook-content h2{
        font-size:1.6rem;
    }
}