/* frontend/public/css/style.css */

/* --- 1. 全局变量和基础重置 (设计系统的核心) --- */
:root {
    --primary-color: #2563eb; /* 一种现代、专业的蓝色 */
    --primary-color-dark: #1d4ed8;
    --secondary-color: #475569;
    --success-color: #16a34a;
    --danger-color: #dc2626;
    --warning-color: #f59e0b;
    --light-color: #f1f5f9; /* 页面背景色 */
    --white-color: #ffffff;
    --text-color: #1e293b;
    --text-light-color: #64748b;
    --border-color: #cbd5e1;
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --border-radius: 8px;
    --box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --transition-speed: 0.2s;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-family);
    background-color: var(--light-color);
    color: var(--text-color);
    line-height: 1.6;
}

main.container {
    width: 95%;
    max-width: 1400px;
    margin: 20px auto;
}

h1, h2, h3, h4 {
    margin-bottom: 0.75em;
    line-height: 1.2;
}
h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; color: var(--primary-color); }
h3 { font-size: 1.25rem; }


/* --- 2. 通用组件样式 --- */

.card {
    background: var(--white-color);
    padding: 24px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    margin-bottom: 24px;
}

.button {
    display: inline-block;
    padding: 10px 20px;
    border: none;
    border-radius: var(--border-radius);
    background-color: var(--secondary-color);
    color: var(--white-color);
    font-weight: bold;
    font-size: 1rem;
    cursor: pointer;
    text-decoration: none;
    text-align: center;
    transition: background-color var(--transition-speed), transform var(--transition-speed);
}
.button:hover {
    transform: translateY(-2px);
}
.button.primary-button { background-color: var(--primary-color); }
.button.primary-button:hover { background-color: var(--primary-color-dark); }
.button.delete-button { background-color: var(--danger-color); }
.button.small-button { padding: 7px 12px; font-size: 0.9em; }
.button:disabled {
    background-color: #94a3b8;
    cursor: not-allowed;
    transform: none;
}

/* 表单样式 */
.form-group {
    margin-bottom: 1rem;
}
.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}
input[type="text"],
input[type="password"],
input[type="number"],
input[type="search"],
select {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
}
input:focus, select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.2);
}
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

/* 表格样式 */
.table-wrapper { overflow-x: auto; }
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1.5rem;
}
th, td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    text-align: left;
    vertical-align: middle;
}
thead th {
    background-color: #f8fafc;
    font-weight: 600;
}
tbody tr:hover {
    background-color: #f8fafc;
}


/* --- 3. 导航栏样式 --- */
.main-header {
    background: var(--white-color);
    padding: 0 2.5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--box-shadow);
    height: 64px;
}
.main-header h1 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin: 0;
}
.main-nav {
    display: flex;
    gap: 1rem;
}
.main-nav a {
    padding: 20px 10px;
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color var(--transition-speed);
    border-bottom: 2px solid transparent;
}
.main-nav a:hover {
    color: var(--primary-color);
}
#mobile-menu-btn {
    display: none; /* 默认隐藏汉堡按钮 */
    font-size: 1.5rem;
    background: none;
    border: none;
    cursor: pointer;
}


/* --- 4. 特定页面和组件样式 --- */

/* 登录页 */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 1rem;
}
.login-container form {
    width: 100%;
    max-width: 400px;
}

/* 点餐页 - 左右布局 */
.order-layout {
    display: grid;
    grid-template-columns: 40% 1fr; /* 左侧窄，右侧宽 */
    gap: 24px;
    align-items: flex-start;
}

/* ⭐⭐⭐ 桌台网格 (重点美化) ⭐⭐⭐ */
.table-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 16px;
}
.table {
    padding: 20px 10px;
    font-size: 1.2rem;
    font-weight: bold;
    text-align: center;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    border: 2px solid transparent;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}
.table-number {
    font-size: 1.2rem;
    font-weight: bold;
}
.table-stats {
    font-size: 0.8rem;
    font-weight: normal;
    margin-top: 5px;
    background-color: rgba(0,0,0,0.1);
    padding: 2px 6px;
    border-radius: 4px;
}
.table.available {
    background-color: #ecfdf5; /* 绿色系 */
    color: #059669;
    border-color: #a7f3d0;
}
.table.occupied {
    background-color: #fff1f2; /* 红色系 */
    color: #e11d48;
    border-color: #fecdd3;
}
.table.reserved {
    background-color: #eff6ff; /* 蓝色系 */
    color: #3b82f6;
    border-color: #bfdbfe;
}
.table:hover {
    transform: scale(1.05);
    box-shadow: var(--box-shadow);
}
.table.active {
    border-color: var(--primary-color);
    box-shadow: var(--box-shadow);
    transform: scale(1.05);
}

/* 菜单列表 */
.menu-list {
    max-height: 400px;
    overflow-y: auto;
    margin-top: 1rem;
}
.menu-item {
    display: flex;
    justify-content: space-between;
    padding: 12px;
    border-radius: 6px;
    cursor: pointer;
    border-bottom: 1px solid var(--border-color);
}
.menu-item:hover {
    background-color: #f8fafc;
}
.item-name { font-weight: 500; }
.item-price { color: var(--text-light-color); }

/* 订单详情 */
.order-summary {
    text-align: right;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}
.order-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
    justify-content: flex-end;
}
.order-items-table button {
    margin: 0 4px;
}

/* 统计分析 */
.analytics-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}
.analytics-summary p {
    font-size: 2rem;
    font-weight: bold;
    color: var(--primary-color);
}

/* 消费单预览 */
.receipt-body { background-color: #ccc; padding: 20px; }
.receipt-container { max-width: 320px; margin: auto; padding: 15px; font-size: 14px; }
.receipt-header { text-align: center; border-bottom: 1px dashed #333; padding-bottom: 10px; }
.receipt-info { padding: 10px 0; border-bottom: 1px dashed #333; }
.receipt-items table { font-size: 14px; margin-top: 10px; }
.receipt-items th, .receipt-items td { padding: 4px; border: none; }
.receipt-footer { text-align: center; margin-top: 10px; padding-top: 10px; border-top: 1px dashed #333; }
.print-actions { text-align: center; margin-top: 20px; }

@media print {
    .receipt-body { background-color: var(--white-color); padding: 0; }
    .card { box-shadow: none; border: 1px solid #000; }
    .print-actions { display: none; }
}


/* --- 5. 响应式设计 (手机和平板) --- */
@media (max-width: 992px) {
    .order-layout {
        grid-template-columns: 1fr; /* 订单页上下布局 */
    }
}

@media (max-width: 768px) {
    /* 导航栏变为移动端样式 */
    .main-nav {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--white-color);
        flex-direction: column;
        padding: 1rem;
        box-shadow: var(--box-shadow);
    }
    .main-nav.is-open {
        display: flex;
    }
    .main-nav a {
        padding: 1rem;
        text-align: center;
    }
    #mobile-menu-btn {
        display: block; /* 显示汉堡按钮 */
    }
}