/* Reset & Global */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Arial', sans-serif;
}

body {
    background-color: var(--background-color);
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
    transition: background 0.3s ease, color 0.3s ease;
}

/* Variabel Warna */
:root {
    --background-color: #f4f4f4;
    --text-color: #333;
    --container-bg: #fff;
    --input-bg: #fff;
    --button-bg: #007bff;
    --button-hover-bg: #0056b3;
    --border-color: #ddd;
    --shadow: rgba(0, 0, 0, 0.1);
}

.dark-mode {
    --background-color: #1e1e1e;
    --text-color: #f1f1f1;
    --container-bg: #2c2c2c;
    --input-bg: #3d3d3d;
    --button-bg: #28a745;
    --button-hover-bg: #218838;
    --border-color: #555;
    --shadow: rgba(255, 255, 255, 0.1);
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    max-width: 600px;
    padding: 15px;
    background: var(--container-bg);
    border-radius: 12px;
    box-shadow: 0 4px 10px var(--shadow);
    margin-bottom: 20px;
}

header h1 small {
    font-size: 14px;
    color: var(--text-color);
}

/* Upload Container */
#uploadContainer {
    background: var(--container-bg);
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 4px 10px var(--shadow);
    width: 100%;
    max-width: 600px;
    text-align: center;
}

.file-label {
    display: block;
    padding: 15px;
    border: 2px dashed var(--border-color);
    cursor: pointer;
    border-radius: 8px;
    background: var(--input-bg);
    transition: background 0.3s ease;
}

.file-label:hover {
    background: rgba(0, 123, 255, 0.1);
}

input[type="file"] {
    display: none;
}

/* Settings */
#settings {
    background: var(--container-bg);
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 4px 10px var(--shadow);
    width: 100%;
    max-width: 600px;
}

h2 {
    font-size: 18px;
    margin-bottom: 10px;
}

label {
    font-size: 14px;
    margin-top: 10px;
    display: block;
}

input, select {
    width: 100%;
    padding: 10px;
    margin: 5px 0 10px;
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    border-radius: 8px;
}

/* Progress Bar */
#progressContainer {
    display: none;
    text-align: center;
    margin: 20px 0;
}

progress {
    width: 100%;
    max-width: 600px;
}

/* Output */
#output {
    background: var(--container-bg);
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 4px 10px var(--shadow);
    width: 100%;
    max-width: 600px;
    text-align: center;
}

#convertedContainer {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

#convertedContainer img {
    max-width: 100%;
    border-radius: 8px;
    box-shadow: 0 2px 5px var(--shadow);
}

/* Buttons */
button {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: bold;
    font-size: 16px;
    margin-top: 10px;
}

#convertBtn { background: var(--button-bg); color: white; }
#convertBtn:hover { background: var(--button-hover-bg); }

#resetBtn { background: #dc3545; color: white; }
#resetBtn:hover { background: #c82333; }

#downloadAllBtn { background: #ffc107; color: black; }
#downloadAllBtn:hover { background: #e0a800; }

/* Responsive */
@media (max-width: 480px) {
    header, #uploadContainer, #settings, #output {
        width: 95%;
    }
    button { font-size: 14px; }
}