/* ==================================
   CSS 變數設定 (明亮色系、色彩與陰影)
   ================================== */
:root {
    --primary-color: #ff7e5f;
    --primary-hover: #feb47b;
    --success-color: #4CAF50;
    --success-hover: #45a049;
    --danger-color: #f44336;
    --danger-hover: #da190b;
    --info-color: #2196F3;
    --info-hover: #0b7dda;
    --text-main: #333333;
    --text-muted: #666666;
    --bg-card: rgba(255, 255, 255, 0.93);
    --shadow-light: 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-medium: 0 10px 20px rgba(0, 0, 0, 0.1);
    --border-radius: 12px;
}

/* ==================================
   全域設定與 Reset
   ================================== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Noto Sans TC', sans-serif;
    color: var(--text-main);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
    background-color: #f8f9fa;
}

/* ==================================
   背景與毛玻璃設計
   ================================== */
.bg-container {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    /* 使用 Unsplash 餐廳高畫質圖片作為底圖 */
    background-image: url('https://images.unsplash.com/photo-1517248135467-4c7edcad34c4?q=80&w=2070&auto=format&fit=crop');
    background-size: cover;
    background-position: center;
    z-index: -2;
}

.bg-blur-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    /* 建立亮度提高與微毛玻璃效果，讓前景清楚呈現 */
    background: rgba(255, 255, 255, 0.4);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: -1;
}

/* ==================================
   主容器與結構
   ================================== */
.app-container {
    max-width: 1000px;
    margin: 40px auto;
    padding: 0 20px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* 共用卡片樣式 (Glassmorphism 變體) */
.card {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--shadow-medium);
    border: 1px solid rgba(255, 255, 255, 0.5);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.title {
    font-size: 28px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.subtitle {
    font-size: 16px;
    text-align: center;
    color: var(--text-muted);
    margin-bottom: 24px;
}

.section-title {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 20px;
    border-left: 5px solid var(--primary-color);
    padding-left: 12px;
}

/* ==================================
   按鈕樣式
   ================================== */
.btn {
    display: inline-block;
    padding: 12px 24px;
    font-size: 16px;
    font-weight: 500;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    text-align: center;
    transition: background-color 0.3s, transform 0.1s;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary { background: linear-gradient(135deg, var(--primary-color), var(--primary-hover)); color: white; width: 100%; font-weight: 700;}
.btn-success { background-color: var(--success-color); color: white; width: 100%;}
.btn-success:hover { background-color: var(--success-hover); }
.btn-danger { background-color: var(--danger-color); color: white; width: 100%;}
.btn-danger:hover { background-color: var(--danger-hover); }
.btn-info { background-color: var(--info-color); color: white; width: 100%; margin-bottom: 15px;}
.btn-info:hover { background-color: var(--info-hover); }
.btn-outline-sm {
    background: transparent;
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    padding: 6px 12px;
    font-size: 14px;
}
.btn-outline-sm:hover {
    background: var(--primary-color);
    color: white;
}

/* ==================================
   表單與輸入框
   ================================== */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-control {
    width: 100%;
    padding: 12px;
    border: 1px solid #ccc;
    border-radius: 8px;
    font-size: 16px;
    font-family: inherit;
    transition: border-color 0.3s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(255, 126, 95, 0.2);
}

.checkbox-group {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 6px;
    background: #f1f3f5;
    padding: 8px 12px;
    border-radius: 20px;
    cursor: pointer;
    transition: background 0.2s;
    font-size: 14px;
}

.checkbox-label:hover {
    background: #e9ecef;
}

/* ==================================
   資訊與訊息顯示
   ================================== */
.divider {
    height: 1px;
    background: #eee;
    margin: 24px 0;
}

.msg-text {
    margin-top: 15px;
    text-align: center;
    font-weight: 500;
    min-height: 24px;
}

.msg-success { color: var(--success-color); }
.msg-error { color: var(--danger-color); }

.user-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px dashed #ddd;
}

#user-info-text {
    font-weight: 700;
    color: var(--info-color);
    font-size: 16px;
}

.info-box {
    background: #fff3e0;
    border-left: 4px solid var(--primary-color);
    padding: 15px;
    margin-bottom: 20px;
    border-radius: 4px;
    font-weight: 500;
}

/* ==================================
   點餐卡片網格 (Menu Grid)
   ================================== */
.menu-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.menu-card {
    background: white;
    border: 1px solid #eee;
    border-radius: var(--border-radius);
    padding: 20px;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-light);
    transition: transform 0.2s, box-shadow 0.2s;
}

.menu-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

.meal-res {
    font-size: 12px;
    color: var(--primary-color);
    font-weight: 700;
    margin-bottom: 4px;
}

.meal-name {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
}

.meal-category {
    display: inline-block;
    font-size: 12px;
    background: #eee;
    padding: 2px 8px;
    border-radius: 12px;
    margin-bottom: 12px;
    align-self: flex-start;
}

.meal-price {
    font-size: 22px;
    font-weight: 700;
    color: var(--danger-color);
    margin-bottom: 15px;
}

.meal-action {
    margin-top: auto;
}

.meal-action input {
    margin-bottom: 10px;
}

/* ==================================
   表格樣式 (確認訂單區塊)
   ================================== */
.table-responsive {
    overflow-x: auto;
}

.styled-table {
    width: 100%;
    border-collapse: collapse;
    margin: 25px 0;
    font-size: 15px;
    text-align: left;
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-light);
}

.styled-table thead tr {
    background-color: var(--primary-color);
    color: #ffffff;
    text-align: left;
}

.styled-table th,
.styled-table td {
    padding: 12px 15px;
}

.styled-table tbody tr {
    border-bottom: 1px solid #dddddd;
}

.styled-table tbody tr:nth-of-type(even) {
    background-color: #f9f9f9;
}

.styled-table tbody tr:last-of-type {
    border-bottom: 2px solid var(--primary-color);
}

/* ==================================
   通用輔助類別與動畫
   ================================== */
.hidden {
    display: none !important;
}

.fade-in {
    animation: fadeIn 0.5s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.loading-text {
    text-align: center;
    color: var(--text-muted);
    font-style: italic;
    padding: 20px 0;
}

/* ==================================
   RWD 手機版
   ================================== */
@media (max-width: 768px) {
    .app-container {
        margin: 20px auto;
        padding: 0 15px;
    }
    
    .card {
        padding: 20px;
    }
    
    .menu-grid {
        grid-template-columns: 1fr;
    }
    
    .styled-table th, 
    .styled-table td {
        padding: 10px;
        font-size: 14px;
    }
}