body {
    margin: 0;
    font-family: "Poppins", sans-serif;
    background: linear-gradient(135deg, #1e1e2f, #2a2d4a);
    color: #fff;
}


/* Container */

.container {
    max-width: 650px;
    margin: 80px auto;
    padding: 32px;
    backdrop-filter: blur(22px);
    background: rgba(255, 255, 255, 0.09);
    border-radius: 22px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.25);
}


/* Text Elements */

h1 {
    margin-top: 0;
    font-size: 32px;
    font-weight: 600;
    text-align: center;
}

.muted {
    text-align: center;
    opacity: 0.75;
    font-size: 14px;
    margin-bottom: 30px;
}


/* Form / Input Styling */

.form-row {
    margin-bottom: 22px;
    display: flex;
    flex-direction: column;
}

input[type="file"] {
    padding: 14px;
    border-radius: 14px;
    outline: none;
    border: 1px solid rgba(255, 255, 255, 0.25);
    background: rgba(0, 0, 0, 0.25);
    color: #fff;
    cursor: pointer;
    transition: 0.3s ease;
}

input[type="file"]:hover {
    background: rgba(255, 255, 255, 0.13);
}


/*  Buttonn  */

.btn {
    padding: 14px 22px;
    font-size: 16px;
    border: none;
    border-radius: 14px;
    cursor: pointer;
    background: rgba(0, 136, 255, 0.5);
    color: #fff;
    transition: 0.3s ease;
    backdrop-filter: blur(10px);
}

.btn:hover {
    background: rgba(0, 136, 255, 0.7);
    transform: translateY(-2px);
}


/* Result Output Section */

#mergeResult {
    margin-top: 25px;
    padding: 18px;
    font-size: 15px;
    text-align: center;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 14px;
    display: none;
}