/* ========== 全局重置 ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Microsoft Yahei", "Helvetica Neue", Helvetica, Arial, sans-serif;
}

body {
    background-color: #f4f7fb;
    color: #333;
    font-size: 14px;
    line-height: 1.6;
}

.container {
    width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* ========== 顶部导航/头部 ========== */
.top-header {
    background-color: #0057b8;
    color: #fff;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo-area {
    display: flex;
    align-items: center;
}

.logo-area img {
    height: 45px;
    margin-right: 12px;
}

.logo-area h1 {
    font-size: 22px;
    font-weight: 500;
    color: #fff;
}

.user-info {
    font-size: 15px;
}

/* ========== 主导航 ========== */
.main-nav {
    background-color: #fff;
    border-bottom: 1px solid #e0e6ed;
}

.nav-inner {
    display: flex;
}

.nav-inner a {
    display: block;
    padding: 15px 25px;
    color: #333;
    text-decoration: none;
    font-size: 15px;
    transition: all 0.2s ease;
}

.nav-inner a:hover,
.nav-inner a.active {
    background-color: #0057b8;
    color: #fff;
}

/* ========== 通用卡片/盒子 ========== */
.card {
    background: #fff;
    border-radius: 6px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
    padding: 25px;
    margin: 20px 0;
}

.card-title {
    font-size: 18px;
    color: #0057b8;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid #eee;
}

/* ========== 按钮样式 ========== */
.btn {
    display: inline-block;
    padding: 10px 22px;
    background-color: #0057b8;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    text-decoration: none;
    transition: background 0.2s ease;
}

.btn:hover {
    background-color: #00438f;
}

.btn-outline {
    background-color: transparent;
    border: 1px solid #0057b8;
    color: #0057b8;
}

.btn-outline:hover {
    background-color: #0057b8;
    color: #fff;
}

.btn-danger {
    background-color: #dc3545;
}

.btn-danger:hover {
    background-color: #c82333;
}

/* ========== 表单样式 ========== */
.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
}

.form-control {
    width: 320px;
    padding: 10px 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    transition: border-color 0.2s;
}

.form-control:focus {
    border-color: #0057b8;
    outline: none;
}

/* ========== 表格样式 ========== */
.table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 10px;
}

.table th,
.table td {
    padding: 12px 10px;
    border: 1px solid #eee;
    text-align: center;
}

.table th {
    background-color: #f5f8fc;
    color: #333;
    font-weight: 500;
}

.table tr:hover {
    background-color: #fafbfd;
}

/* ========== 倒计时样式 ========== */
.timer-box {
    background-color: #dc3545;
    color: #fff;
    padding: 8px 18px;
    border-radius: 4px;
    font-size: 16px;
    font-weight: bold;
}

/* ========== 底部版权 ========== */
.footer {
    background-color: #fff;
    border-top: 1px solid #e0e6ed;
    text-align: center;
    padding: 20px 0;
    margin-top: 40px;
    color: #666;
    font-size: 13px;
}