/* 员工学习平台 — 公共样式 (深色 + 品牌红，与官网一致) */
:root{
  --bg:#0d0d0f; --surface:#141418; --surface2:#1a1a1f;
  --primary:#e60012; --primary-hover:#c4000f; --accent:#ff3a4b;
  --text:#f4f4f5; --muted:#9a9aa3;
  --border:rgba(230,0,18,0.25);
  --font:'PingFang SC','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
  --radius:14px; --shadow:0 12px 40px rgba(0,0,0,0.55); --shadow-red:0 8px 30px rgba(230,0,18,0.25);
}
*{margin:0;padding:0;box-sizing:border-box;}
body{font-family:var(--font);color:var(--text);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased;}
a{text-decoration:none;color:inherit;}
.container{max-width:1200px;margin:0 auto;padding:0 32px;}
img{max-width:100%;display:block;}

/* 顶部导航 */
.nav{position:sticky;top:0;z-index:100;background:rgba(13,13,15,0.9);backdrop-filter:blur(14px);border-bottom:1px solid var(--border);}
.nav-inner{display:flex;justify-content:space-between;align-items:center;height:66px;}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;}
.logo img{height:36px;background:#fff;border-radius:6px;padding:3px 7px;}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-links a{color:var(--muted);font-size:14px;font-weight:500;padding:8px 14px;border-radius:8px;transition:all .25s;}
.nav-links a:hover{color:#fff;background:linear-gradient(135deg,#ff3a4b,#e60012);}
.nav-links a.active{color:#fff;font-weight:600;background:linear-gradient(135deg,#ff3a4b,#e60012);}
.nav-user{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:13px;}

/* 按钮 */
.btn{display:inline-block;padding:10px 22px;border-radius:8px;font-weight:600;font-size:14px;cursor:pointer;transition:all .2s;border:none;font-family:var(--font);}
.btn-primary{background:linear-gradient(135deg,#ff3a4b,#e60012);color:#fff;box-shadow:var(--shadow-red);}
.btn-primary:hover{background:linear-gradient(135deg,#e60012,#c4000f);transform:translateY(-2px);}
.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--border);}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);}
.btn-sm{padding:7px 14px;font-size:13px;}
.btn-danger{background:#c4000f;color:#fff;}
.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none!important;}

/* 输入 */
.input{width:100%;padding:11px 14px;border-radius:8px;border:1px solid rgba(255,255,255,0.1);background:var(--surface2);color:var(--text);font-size:14px;font-family:var(--font);transition:border .2s;}
.input:focus{outline:none;border-color:var(--primary);}
textarea.input{resize:vertical;min-height:90px;}
label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px;}

/* 卡片/网格 */
.grid{display:grid;gap:20px;}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-4{grid-template-columns:repeat(4,1fr);}
.card{background:var(--surface2);border:1px solid rgba(255,255,255,0.07);border-radius:var(--radius);padding:22px;transition:all .3s;}
.card:hover{transform:translateY(-4px);border-color:var(--border);box-shadow:var(--shadow);}

/* 页面头部 */
.page-head{text-align:center;padding:56px 0 40px;}
.page-head .tag{display:inline-block;padding:5px 14px;border:1px solid var(--border);border-radius:40px;font-size:11px;letter-spacing:2px;color:var(--accent);margin-bottom:16px;background:rgba(230,0,18,0.08);}
.page-head h1{font-size:34px;font-weight:800;color:#fff;}
.page-head p{color:var(--muted);margin-top:12px;font-size:15px;}
.gold-line{width:60px;height:3px;background:linear-gradient(90deg,#e60012,transparent);margin:16px auto 0;border-radius:2px;}

/* 表单卡片 */
.form-card{max-width:420px;margin:0 auto;background:var(--surface2);border:1px solid rgba(255,255,255,0.08);border-radius:16px;padding:34px;}
.form-card h2{font-size:22px;font-weight:700;color:#fff;margin-bottom:6px;}
.form-card .sub{color:var(--muted);font-size:13px;margin-bottom:22px;}
.form-group{margin-bottom:16px;}
.form-actions{margin-top:22px;}
.form-foot{text-align:center;margin-top:18px;font-size:13px;color:var(--muted);}
.form-foot a{color:var(--primary);font-weight:600;}
.form-error{background:rgba(230,0,18,0.12);border:1px solid rgba(230,0,18,0.3);color:#ff8a94;padding:10px 14px;border-radius:8px;font-size:13px;margin-bottom:16px;display:none;}

/* 弹层 */
.modal-mask{position:fixed;inset:0;background:rgba(0,0,0,0.7);backdrop-filter:blur(4px);z-index:1000;display:none;align-items:center;justify-content:center;}
.modal-mask.show{display:flex;}
.modal{background:var(--surface2);border:1px solid var(--border);border-radius:16px;padding:28px;max-width:560px;width:90%;max-height:85vh;overflow-y:auto;}
.modal h3{font-size:19px;font-weight:700;color:#fff;margin-bottom:16px;}
.modal-close{float:right;cursor:pointer;color:var(--muted);font-size:20px;background:none;border:none;}

/* 统计块 */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-bottom:32px;}
.stat-box{background:var(--surface2);border:1px solid rgba(255,255,255,0.07);border-radius:var(--radius);padding:20px;text-align:center;}
.stat-box .num{font-size:30px;font-weight:800;color:var(--primary);}
.stat-box .label{font-size:13px;color:var(--muted);margin-top:4px;}

/* 进度条 */
.progress{height:8px;background:rgba(255,255,255,0.08);border-radius:6px;overflow:hidden;margin-top:10px;}
.progress .bar{height:100%;background:linear-gradient(90deg,#e60012,#ff3a4b);border-radius:6px;transition:width .4s;}

/* 徽章 */
.badge{display:inline-block;padding:3px 10px;border-radius:20px;font-size:11px;font-weight:600;letter-spacing:0.5px;}
.badge-green{background:rgba(0,200,83,0.15);color:#4ade80;}
.badge-red{background:rgba(230,0,18,0.15);color:#ff8a94;}
.badge-blue{background:rgba(33,150,243,0.15);color:#64b5f6;}
.badge-gray{background:rgba(255,255,255,0.08);color:var(--muted);}

/* 过滤器 */
.filter-bar{display:flex;gap:10px;margin-bottom:24px;flex-wrap:wrap;align-items:center;}
.filter-bar .input{width:auto;flex:1;min-width:200px;}
.chip{padding:8px 18px;border-radius:30px;border:1px solid rgba(255,255,255,0.12);color:var(--muted);font-size:13px;cursor:pointer;transition:all .2s;background:transparent;}
.chip:hover{color:#fff;border-color:var(--primary);}
.chip.on{background:linear-gradient(135deg,#ff3a4b,#e60012);color:#fff;border-color:transparent;}

/* 空状态 */
.empty{text-align:center;padding:60px 0;color:var(--muted);font-size:15px;}
.empty .e-icon{font-size:40px;margin-bottom:12px;opacity:.5;}

/* 新闻/列表项通用 */
.list-item{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;background:var(--surface2);border:1px solid rgba(255,255,255,0.06);border-radius:10px;margin-bottom:12px;transition:all .2s;}
.list-item:hover{border-color:var(--border);}
.list-item .li-title{font-weight:600;color:#fff;font-size:14px;}
.list-item .li-sub{color:var(--muted);font-size:12px;margin-top:3px;}

/* 表格 */
.table-wrap{overflow-x:auto;background:var(--surface2);border:1px solid rgba(255,255,255,0.07);border-radius:var(--radius);}
table{width:100%;border-collapse:collapse;font-size:14px;}
th,td{padding:13px 16px;text-align:left;border-bottom:1px solid rgba(255,255,255,0.05);}
th{color:var(--muted);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:0.5px;background:rgba(255,255,255,0.02);}
td{color:var(--text);}
tr:hover td{background:rgba(230,0,18,0.04);}

/* 页脚 */
footer{background:#0d0d0f;color:#8a8a94;border-top:1px solid #232327;padding:28px 0;text-align:center;font-size:13px;}
footer a{color:#8a8a94;}
footer a:hover{color:#ff3a4b;}

@media(max-width:900px){
  .nav-links{display:none;}
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .container{padding:0 18px;}
}
@media(max-width:560px){
  .grid-4,.grid-3{grid-template-columns:1fr;}
  .stat-grid{grid-template-columns:1fr 1fr;}
}