* {
    box-sizing: border-box;
    max-width: 100%;
}

html,
body {
    margin: 0;
    padding: 0;
    width: 100%;
    overflow-x: hidden;
    background: #f4f4f4;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI",
        Roboto, Helvetica, Arial, sans-serif;
    color: #222;
}

/* WRAPPER */
.wrapper {
    width: 100%;
    max-width: 420px;
    margin: 0 auto;
    padding: 16px;
}

/* CARD */
.card {
    background: #ffffff;
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

/* TITLE */
h2 {
    margin-top: 0;
    margin-bottom: 12px;
    font-size: 18px;
    text-align: center;
}

/* FORM */
form {
    display: flex;
    flex-direction: column;
}

label {
    font-size: 13px;
    margin-top: 14px;
    margin-bottom: 6px;
    color: #555;
}

input[type="text"],
input[type="file"] {
    padding: 12px;
    font-size: 15px;
    border-radius: 8px;
    border: 1px solid #ccc;
    width: 100%;
}

/* FOCUS */
input:focus {
    outline: none;
    border-color: #25D366;
}

/* BUTTON */
button {
    margin-top: 18px;
    padding: 14px;
    font-size: 16px;
    border-radius: 10px;
    border: none;
    background: #25D366;
    color: #fff;
    cursor: pointer;
}

button:active {
    transform: scale(0.98);
}

/* INFO TEXT */
.note {
    margin-top: 12px;
    font-size: 12px;
    color: #777;
    text-align: center;
}

/* DESKTOP */
@media (min-width: 600px) {
    body {
        padding: 20px;
    }

    .wrapper {
        max-width: 480px;
    }
}

/* DRAG & DROP */
#drop-zone {
    margin-top: 8px;
    padding: 28px 16px;
    border: 2px dashed #ccc;
    border-radius: 10px;
    text-align: center;
    color: #666;
    background: #fafafa;
    transition: all 0.2s ease;
}

#drop-zone.dragover {
    border-color: #25D366;
    background: #eafff2;
    color: #111;
}

#drop-zone p {
    margin: 0;
    font-size: 14px;
}

#file-name {
    margin-top: 10px;
    font-size: 13px;
    color: #333;
}

/* OVERLAY SAAT DRAG */
body.dragging #drop-zone {
    border-color: #25D366;
    background: #eafff2;
    color: #111;
}

/* OPTIONAL: highlight seluruh halaman */
body.dragging {
    background: #eefaf3;
}