/* BODY + WALLPAPER BACKGROUND (Merge PDF style) */
body {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;

    /* Wallpaper */
    background-color: #000; /* fallback */
    background-image: url('mainpageimage.png'); /* <- yaha apni image ka path do */
    background-repeat: no-repeat;
    background-position: center center;
    background-size: cover;
    background-attachment: fixed;

    display: block !important; /* kisi global flex ko override karne ke liye */
}

/* Top blue header */
.top-header {
    width: 100%;
    background-color: #1565C0;
    color: #ffffff;
    padding: 15px 20px;
    text-align: center;
    font-size: 28px;
    font-weight: 700;
    position: relative;
    box-sizing: border-box;
}

.top-header .back-arrow {
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 20px;
    color: #ffffff;
    text-decoration: none;
}

.top-header .back-arrow i {
    margin-right: 4px;
}

/* Green line */
.green-strip {
    width: 100%;
    height: 10px;
    background-color: #14ff3f;
}

/* Main white card on top of wallpaper */
.tool-container {
    padding: 30px;
    max-width: 600px;
    width: 90%;
    margin: 40px auto 20px auto;
    background: #ffffff;
    border-radius: 8px;
    box-shadow: 0 0 20px rgba(0,0,0,0.45); /* thoda zyada shadow so wallpaper pe pop out */
    text-align: center;
}

.tool-title {
    color: #004D40;
    margin-bottom: 10px;
}

.tool-desc {
    font-size: 0.95rem;
    color: #444;
    margin-bottom: 25px;
}

/* Input groups */
.input-group {
    margin-bottom: 20px;
    text-align: left;
}

.input-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: bold;
    color: #333;
}

.input-group input[type="file"],
.input-group select {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
    box-sizing: border-box;
    font-size: 0.95rem;
}

/* Button */
#convertBtn {
    padding: 12px 25px;
    background-color: #1565C0;
    color: #ffffff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1.05rem;
    margin-top: 10px;
    transition: background-color 0.3s;
}

#convertBtn:hover {
    background-color: #0d47a1;
}