/* 全局国风变量 */
:root {
    --paper: #f7f3ee;
    --dark-red: #8c2323;
    --ink: #2c2c2c;
    --brown: #6b4c35;
    --border-line: #c9b89c;
    --light-gold: #d4b886;
}
* {margin:0;padding:0;box-sizing:border-box;font-family:"SimSun","STSong",serif;}
body {background: var(--paper);color: var(--ink);font-size:15px;line-height:1.8;}

/* 登录页 */
.login-body {display:flex;align-items:center;justify-content:center;min-height:100vh;background-image:linear-gradient(rgba(247,243,238,0.9),rgba(247,243,238,0.9)),url('');}
.login-box {width:90%;max-width:420px;border:2px solid var(--border-line);padding:30px;background:#fff9f2;border-radius:4px;box-shadow:0 0 12px #d1c2aa;}
.login-title {text-align:center;color:var(--dark-red);margin-bottom:24px;font-size:26px;letter-spacing:4px;}
.tip-error {background:#ffe8e8;color:#a02222;padding:8px 12px;margin-bottom:16px;border:1px solid #f2c2c2;}
.form-item {margin-bottom:16px;}
.form-item label {display:block;margin-bottom:6px;color:var(--brown);}
.form-item input {width:100%;padding:10px 12px;border:1px solid var(--border-line);background:#fffdf8;font-size:15px;outline:none;}
.form-item input:focus {border-color:var(--light-gold);box-shadow:0 0 0 2px rgba(212,184,134,0.3);}
.submit-btn {width:100%;padding:12px;background:var(--dark-red);color:#fff;border:none;font-size:16px;cursor:pointer;letter-spacing:3px;}

/* 后台布局 */
.admin-wrap {display:flex;min-height:100vh;}
.admin-sidebar {width:240px;background:#3a281c;color:#f0e9df;transition:0.3s;overflow:hidden;position:fixed;height:100vh;}
.sidebar-logo {padding:20px;text-align:center;border-bottom:1px solid #5c4432;}
.sidebar-logo h2 {font-size:20px;color:var(--light-gold);letter-spacing:2px;}
.sidebar-menu a {display:block;padding:14px 24px;color:#e8e0d5;text-decoration:none;border-bottom:1px solid #4b3627;transition:0.2s;}
.sidebar-menu a:hover {background:#523b2b;color:#fff;}
.menu-item.logout {color:#ffc9c9;}
.admin-main {flex:1;margin-left:240px;padding:0;transition:0.3s;}
.top-bar {background:#fff9f2;padding:14px 20px;border-bottom:1px solid var(--border-line);display:flex;justify-content:space-between;align-items:center;}
.fold-btn {border:1px solid var(--border-line);background:transparent;padding:6px 12px;cursor:pointer;color:var(--brown);}
.content-box {padding:24px;max-width:1400px;margin:0 auto;}
h2 {color:var(--dark-red);margin-bottom:20px;padding-bottom:10px;border-bottom:2px solid var(--border-line);}
h3 {margin:16px 0 12px;color:var(--brown);}
.two-col {display:grid;grid-template-columns: 320px 1fr;gap:30px;}
.item-card {border:1px solid var(--border-line);padding:12px;margin-bottom:10px;background:#fffdf8;}
.inline-form {display:flex;gap:8px;align-items:center;flex-wrap:wrap;}
.btn-primary {background:var(--dark-red);color:#fff;border:none;padding:8px 16px;cursor:pointer;}
.btn-save {background:#2a6330;color:#fff;border:none;padding:6px 12px;cursor:pointer;}
.btn-del {background:#9c2c2c;color:#fff;padding:6px 12px;text-decoration:none;}

/* 自适应 */
@media(max-width:992px){
    .admin-sidebar {width:0;}
    .admin-main {margin-left:0;}
    .two-col {grid-template-columns:1fr;}
    .inline-form {flex-direction:column;align-items:start;}
}
/* 仪表盘统计卡片 */
.stat-box {display:grid;grid-template-columns: repeat(auto-fit, minmax(220px,1fr));gap:20px;margin-bottom:30px;}
.stat-card {border:1px solid var(--border-line);padding:20px;background:#fffdf8;text-align:center;}
.stat-card h4 {color:var(--brown);margin-bottom:10px;font-size:16px;}
.stat-card p {font-size:22px;color:var(--dark-red);font-weight:bold;}
textarea {width:100%;padding:10px;border:1px solid var(--border-line);background:#fffdf8;font-size:15px;outline:none;}
textarea:focus {border-color:var(--light-gold);box-shadow:0 0 0 2px rgba(212,184,134,0.3);}