/**
 * 檔案： style.css
 * 描述：專為內容自動化管道設計的現代化、響應式樣式表。
 */

/* --- 全局與字體設定 --- */
:root {
    --primary-color: #007bff;
    --primary-hover-color: #0056b3;
    --background-color: #f8f9fa;
    --container-background: #ffffff;
    --text-color: #212529;
    --label-color: #495057;
    --border-color: #ced4da;
    --success-bg: #d4edda;
    --success-border: #c3e6cb;
    --success-text: #155724;
    --error-bg: #f8d7da;
    --error-border: #f5c6cb;
    --error-text: #721c24;
    --shadow: 0 6px 12px rgba(0,0,0,0.1);
    --border-radius: 8px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans TC", sans-serif;
    margin: 0;
    padding: 1.5rem;
    line-height: 1.7;
    background-color: var(--background-color);
    color: var(--text-color);
    font-size: 16px;
}

/* --- 主要容器與標題 --- */
.container {
    max-width: 800px;
    margin: 2rem auto;
    padding: 2.5rem;
    background: var(--container-background);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

h1 {
    color: var(--text-color);
    text-align: center;
    margin-bottom: 0.5rem;
}

.container > p {
    text-align: center;
    color: var(--label-color);
    margin-bottom: 2.5rem;
}

/* --- 表單元素 --- */
.form-group {
    margin-bottom: 1.75rem;
}

label {
    display: block;
    margin-bottom: 0.6rem;
    font-weight: 600;
    color: var(--label-color);
}

input[type="text"],
textarea {
    width: 100%;
    padding: 0.85rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-sizing: border-box;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    background-color: #fff;
}

input[type="text"]:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.25);
}

textarea {
    height: 140px;
    resize: vertical;
}

/* --- 自訂檔案上傳按鈕樣式 --- */
input[type="file"] {
    display: none;
}
.file-upload-label {
    display: inline-block;
    width: 100%;
    padding: 0.85rem 1rem;
    border: 1px dashed var(--border-color);
    border-radius: var(--border-radius);
    background-color: #f8f9fa;
    cursor: pointer;
    text-align: center;
    transition: background-color 0.2s ease, border-color 0.2s ease;
}
.file-upload-label:hover {
    background-color: #e9ecef;
    border-color: var(--primary-color);
}
.file-name {
    display: block;
    margin-top: 0.5rem;
    font-size: 0.9em;
    color: var(--label-color);
}


/* --- Checkbox 群組 --- */
.checkbox-group {
    max-height: 180px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    padding: 1rem;
    border-radius: var(--border-radius);
    background-color: #fff;
}
.checkbox-item {
    display: flex;
    align-items: center;
    margin-bottom: 0.75rem;
    cursor: pointer;
}
.checkbox-item input[type="checkbox"] {
    margin-right: 0.75rem;
    width: 1.2em;
    height: 1.2em;
    accent-color: var(--primary-color);
}
.checkbox-item:last-child {
    margin-bottom: 0;
}


/* --- 提交按鈕 --- */
button[type="submit"] {
    display: block;
    width: 100%;
    font-weight: 600;
    color: #fff;
    text-align: center;
    background-color: var(--primary-color);
    border: 1px solid var(--primary-color);
    padding: 0.9rem 1.5rem;
    font-size: 1.1rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.2s ease-in-out;
}

button[type="submit"]:hover {
    background-color: var(--primary-hover-color);
    border-color: var(--primary-hover-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

/* --- 結果與訊息回饋 --- */
.result {
    margin-top: 2rem;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    word-wrap: break-word;
    border: 1px solid;
}
.result.success {
    border-color: var(--success-border);
    background-color: var(--success-bg);
    color: var(--success-text);
}
.result.error {
    border-color: var(--error-border);
    background-color: var(--error-bg);
    color: var(--error-text);
}
.result h2 {
    margin-top: 0;
}
.result a {
    color: inherit;
    font-weight: bold;
    text-decoration: underline;
}

/* --- 頁腳 --- */
footer {
    text-align: center;
    margin-top: 3rem;
    color: #888;
    font-size: 0.9em;
}

/* --- 響應式設計 (手機介面) --- */
@media (max-width: 768px) {
    body {
        padding: 0.5rem;
    }
    .container {
        padding: 1.5rem;
        margin: 1rem 0;
        box-shadow: none;
        border-radius: 0;
    }
    h1 {
        font-size: 1.8rem;
    }
}