/* ============================================================
   汇率换算查询网站 - 管理后台样式表
   ============================================================ */

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

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #dbeafe;
    --danger: #dc2626;
    --danger-dark: #b91c1c;
    --success: #059669;
    --bg: #f0f2f5;
    --card-bg: #ffffff;
    --text: #1f2937;
    --text-light: #6b7280;
    --border: #e5e7eb;
    --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
    --radius: 8px;
    --radius-lg: 12px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}

a {
    color: var(--primary);
    text-decoration: none;
}

a:hover {
    color: var(--primary-dark);
}

.muted {
    color: var(--text-light);
    font-size: 12px;
}

.admin-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 登录页 */
.login-body {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

.login-box {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: 0 10px 15px rgba(0,0,0,0.1);
    padding: 36px 40px;
    width: 380px;
}

.login-box h1 {
    font-size: 20px;
    text-align: center;
    margin-bottom: 24px;
    color: var(--text);
}

.login-form label {
    display: block;
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 6px;
}

.login-form input {
    width: 100%;
    padding: 10px 12px;
    margin-bottom: 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 14px;
    outline: none;
}

.login-form input:focus {
    border-color: var(--primary);
}

.login-form .btn {
    width: 100%;
    margin-top: 4px;
}

.login-foot {
    text-align: center;
    margin-top: 16px;
    font-size: 13px;
}

/* 顶部 */
.admin-header {
    background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 50%, #3b82f6 100%);
    color: #fff;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.admin-header .admin-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 56px;
}

.admin-logo {
    font-size: 18px;
    font-weight: 700;
}

.admin-nav {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.admin-nav a {
    color: rgba(255,255,255,0.9);
    font-size: 14px;
    padding: 6px 12px;
    border-radius: 6px;
}

.admin-nav a:hover {
    color: #fff;
    background: rgba(255,255,255,0.15);
}

.admin-nav a.active {
    color: #fff;
    background: rgba(255,255,255,0.2);
}

/* 主区域 */
.admin-main {
    padding: 24px 20px;
}

/* 卡片 */
.card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    margin-bottom: 24px;
    overflow: hidden;
}

.card-title {
    background: #f8fafc;
    padding: 14px 24px;
    font-size: 16px;
    font-weight: 600;
    border-bottom: 1px solid var(--border);
}

/* 提示 */
.alert {
    padding: 12px 20px;
    border-radius: var(--radius);
    margin-bottom: 16px;
    font-size: 14px;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
}

/* 表格 */
.admin-table {
    width: 100%;
    border-collapse: collapse;
}

.admin-table th {
    background: #f8fafc;
    padding: 10px 12px;
    text-align: left;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-light);
    border-bottom: 2px solid var(--border);
    white-space: nowrap;
}

.admin-table td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
}

.admin-table tr:last-child td {
    border-bottom: none;
}

.admin-table tr:hover td {
    background: #f9fafb;
}

.admin-table .empty {
    text-align: center;
    padding: 40px;
    color: var(--text-light);
}

.admin-table .up-cell {
    color: var(--text);
    line-height: 1.5;
}

.admin-table .actions {
    white-space: nowrap;
}

.inline-form {
    display: inline;
}

/* 按钮 */
.btn {
    display: inline-block;
    padding: 8px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: #fff;
    color: var(--text);
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
}

.btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.btn-primary {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
    font-weight: 600;
}

.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    color: #fff;
}

.btn-danger {
    background: var(--danger);
    border-color: var(--danger);
    color: #fff;
}

.btn-danger:hover {
    background: var(--danger-dark);
    border-color: var(--danger-dark);
    color: #fff;
}

.btn-small {
    padding: 4px 10px;
    font-size: 13px;
}

/* 编辑表单 */
.edit-form {
    padding: 24px;
}

.edit-form label {
    display: block;
    font-size: 14px;
    color: var(--text-light);
    margin: 14px 0 6px;
}

.edit-form input[type="text"],
.edit-form input[type="number"],
.edit-form select,
.edit-form textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 14px;
    outline: none;
    background: #fff;
}

.edit-form input:focus,
.edit-form select:focus,
.edit-form textarea:focus {
    border-color: var(--primary);
}

.edit-form input[type="file"] {
    display: block;
    padding: 8px 0;
    border: none;
}

.img-preview {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 6px 0;
    font-size: 13px;
    color: var(--text-light);
}

.img-preview img {
    max-width: 180px;
    max-height: 120px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.thumb {
    width: 60px;
    height: 44px;
    object-fit: cover;
    border-radius: 6px;
    border: 1px solid var(--border);
}

.thumb-none {
    color: var(--text-light);
    font-size: 12px;
}

.edit-form textarea {
    resize: vertical;
    line-height: 1.8;
}

.edit-form .checkbox {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-light);
    margin: 14px 0;
}

.edit-form .checkbox input {
    width: auto;
}

.form-row {
    display: flex;
    gap: 16px;
}

.form-row > div {
    flex: 1;
}

.form-actions {
    display: flex;
    gap: 12px;
    margin-top: 24px;
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    gap: 6px;
    margin: 16px 0 8px;
    flex-wrap: wrap;
}

.page-btn {
    display: inline-block;
    min-width: 38px;
    height: 38px;
    line-height: 38px;
    text-align: center;
    padding: 0 10px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 14px;
    color: var(--text);
}

.page-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.page-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
    font-weight: 600;
}

.page-info {
    text-align: center;
    color: var(--text-light);
    font-size: 13px;
    margin-bottom: 16px;
}

@media (max-width: 768px) {
    .admin-header .admin-container {
        flex-direction: column;
        height: auto;
        padding: 12px;
        gap: 8px;
    }

    .form-row {
        flex-direction: column;
    }

    .admin-table {
        display: block;
        overflow-x: auto;
    }
}