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

body{
    background: #f5f5f5;
    color: #222;
}

body.dark{
    background: #121212;
    color: #fff;
}

header{
    text-align:center;
    padding:20px;
}

.tools-navbar{
    display:flex;
    flex-wrap:wrap;
    justify-content:center;
    gap:10px;
    padding:15px;
    background:#e8e8e8;
}

.tools-navbar a{
    text-decoration:none;
    color:#222;
    background:#transparent;
    padding:10px 15px;
    border-radius:8px;
}

.tools-navbar a.active{
    background:#transparent;
    color:#fff;
}

body.dark .tools-navbar{
    background:#1b1b1b;
}

body.dark .tools-navbar a{
    color:#fff;
    background:#transparent;
}

body.dark .tools-navbar a.active{
    background:#transparent;
    color:#fff;
}

#themeBtn{
    position:fixed;
    top:15px;
    right:15px;
    z-index:1000;

    padding:10px 20px;
    border:none;
    border-radius:8px;
    cursor:pointer;

    background:#007bff;
    color:#fff;
}

.container{
    width:90%;
    max-width:1000px;
    margin:auto;
}
.upload-box{
    border:2px dashed #3b82f6;
    border-radius:12px;
    padding:40px 20px;
    text-align:center;
    cursor:pointer;
    margin:20px 0;
    background:#f7f6f6;
    transition:0.3s;
}

.upload-box:hover{
    background:#252525;
    border-color:#60a5fa;
}

.upload-box.dragover{
    border-color:#00c853;
    background:#263238;
}

.upload-box input{
    display:none;
}

.upload-box p{
    font-size:18px;
    color:#ccc;
}

.preview{
    margin-top:20px;
}

#previewContainer{
    display:flex;
    flex-wrap:wrap;
    gap:15px;
    justify-content:center;
}

#previewContainer img{
    width:150px;
    height:150px;
    object-fit:cover;
    border-radius:10px;
    border:2px solid #333;
}

.image-info{
    margin-top:20px;
    background:#f5f5f5;
    padding:15px;
    border-radius:10px;
}

#convertBtn,
#downloadBtn button{
    display:block;
    width:100%;
    margin-top:20px;
    padding:15px;
    border:none;
    border-radius:10px;
    background:#007bff;
    color:#fff;
    font-size:18px;
    cursor:pointer;
}

#convertBtn:hover,
#downloadBtn button:hover{
    background:#0056d2;
}

.loader{
    display:none;
    text-align:center;
    margin:15px 0;
    font-size:18px;
    color:#4fc3f7;
}