/* ===========================
   GOOGLE FONT
=========================== */

@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700;800&display=swap');

/* ===========================
   RESET
=========================== */

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

body{

    font-family:'Poppins',sans-serif;

    min-height:100vh;

    background:
    radial-gradient(circle at top left,#2563eb 0%,transparent 35%),
    radial-gradient(circle at bottom right,#06b6d4 0%,transparent 35%),
    #07111f;

    color:white;

}

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

header{

    display:flex;

    justify-content:center;

    padding:28px;

}

.logo{

    font-size:30px;

    font-weight:800;

}

/* ===========================
   HERO
=========================== */

.hero{

    text-align:center;

    padding:30px 20px;

}

.badge{

    display:inline-block;

    padding:10px 24px;

    border-radius:50px;

    background:rgba(255,255,255,.08);

    border:1px solid rgba(255,255,255,.15);

    backdrop-filter:blur(12px);

    letter-spacing:2px;

    font-size:14px;

}

.hero h1{

    margin-top:25px;

    font-size:56px;

    font-weight:800;

}

.hero p{

    max-width:700px;

    margin:20px auto;

    color:#cbd5e1;

    line-height:1.8;

    font-size:18px;

}

/* ===========================
   CARD
=========================== */

.upload-section{

    display:flex;

    justify-content:center;

    padding:50px 20px 80px;

}

.upload-card{

    width:920px;

    max-width:95%;

    padding:40px;

    border-radius:30px;

    backdrop-filter:blur(25px);

    background:rgba(255,255,255,.07);

    border:1px solid rgba(255,255,255,.12);

    box-shadow:0 20px 60px rgba(0,0,0,.35);

}
/* ===========================
   UPLOAD BOX
=========================== */

.upload-box{

    position:relative;

    display:flex;

    flex-direction:column;

    align-items:center;

    justify-content:center;

    text-align:center;

    padding:70px 30px;

    border:2px dashed rgba(255,255,255,.18);

    border-radius:25px;

    cursor:pointer;

    overflow:hidden;

    transition:.35s;

}

.upload-box::before{

    content:"";

    position:absolute;

    inset:0;

    background:linear-gradient(135deg,#2563eb,#06b6d4);

    opacity:0;

    transition:.35s;

}

.upload-box>*{

    position:relative;

    z-index:2;

}

.upload-box:hover{

    transform:translateY(-8px);

    border-color:transparent;

    box-shadow:0 20px 60px rgba(0,0,0,.4);

}

.upload-box:hover::before{

    opacity:.12;

}

/* ===========================
   ICON
=========================== */

.upload-icon{

    width:95px;

    height:95px;

    border-radius:50%;

    display:flex;

    align-items:center;

    justify-content:center;

    font-size:46px;

    background:linear-gradient(135deg,#2563eb,#06b6d4);

    margin-bottom:22px;

}

.upload-box h2{

    font-size:30px;

    margin-bottom:12px;

}

.upload-box p{

    color:#cbd5e1;

}

/* ===========================
   BUTTONS
=========================== */

.buttons{

    display:flex;

    justify-content:center;

    gap:18px;

    flex-wrap:wrap;

    margin-top:35px;

}

button{

    border:none;

    border-radius:50px;

    padding:16px 36px;

    font-size:17px;

    font-weight:600;

    cursor:pointer;

    transition:.3s;

}

#mergeBtn{

    background:linear-gradient(135deg,#2563eb,#1d4ed8);

    color:white;

}

#downloadBtn{

    background:linear-gradient(135deg,#06b6d4,#0891b2);

    color:white;

}

button:hover{

    transform:translateY(-4px);

    box-shadow:0 15px 35px rgba(0,0,0,.35);

}

/* ===========================
   FILE LIST
=========================== */

#fileList{

    margin-top:40px;

    display:grid;

    gap:16px;

}

.file-item{

    display:flex;

    justify-content:space-between;

    align-items:center;

    padding:18px 20px;

    border-radius:18px;

    background:rgba(255,255,255,.07);

    border:1px solid rgba(255,255,255,.10);

    transition:.3s;

}

.file-item:hover{

    transform:translateX(6px);

    background:rgba(255,255,255,.10);

}

.file-info{

    display:flex;

    align-items:center;

    gap:15px;

}

.file-icon{

    font-size:28px;

}

.file-name{

    font-size:16px;

    word-break:break-word;

}

.file-size{

    color:#94a3b8;

    font-size:14px;

}

/* ===========================
   MOBILE
=========================== */

@media(max-width:768px){

.hero h1{

font-size:38px;

}

.hero p{

font-size:16px;

}

.upload-card{

padding:25px;

}

.upload-box{

padding:50px 20px;

}

.upload-box h2{

font-size:24px;

}

.buttons{

flex-direction:column;

}

button{

width:100%;

}

.file-item{

flex-direction:column;

align-items:flex-start;

gap:10px;

}

}