/* ===== CMS 后台 · 浅调轻量化商务科技风 ===== */
:root{
  --bg:#eaf0fb;--bg2:#f5f8fe;
  --panel:#fff;--panel-2:#f3f7fd;
  --border:rgba(26,52,102,.10);--border-2:rgba(26,52,102,.16);
  --text:#17233d;--muted:#5b6b87;--muted-2:#8a98b0;
  --accent:#3a6ff7;--accent-2:#6a8af0;
  --grad:linear-gradient(120deg,#3a6ff7,#5b8def 52%,#6a8af0);
  --danger:#ef4444;--success:#10b981;
  --radius:14px;
  --shadow:0 8px 22px rgba(30,52,98,.07);
  --shadow-lg:0 18px 46px rgba(30,52,98,.13);
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{font-family:"PingFang SC","Microsoft YaHei",system-ui,sans-serif;color:var(--text);line-height:1.6;
  background:radial-gradient(1000px 520px at 86% -10%,rgba(58,111,247,.12),transparent 60%),
    radial-gradient(880px 500px at -8% 4%,rgba(106,138,240,.10),transparent 55%),
    linear-gradient(180deg,var(--bg),var(--bg2));background-attachment:fixed;min-height:100vh;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:1180px;margin:0 auto;padding:0 22px}

/* ===== 登录 ===== */
.login-shell{display:grid;place-items:center;min-height:100vh;padding:24px}
.login-card{background:#fff;border:1px solid var(--border);border-radius:20px;box-shadow:var(--shadow-lg);padding:42px 38px;width:100%;max-width:420px;position:relative;overflow:hidden}
.login-card::before{content:"";position:absolute;left:0;right:0;top:0;height:4px;background:var(--grad)}
.login-card .logo{display:flex;align-items:center;gap:12px;margin-bottom:24px}
.login-card .logo-mark{width:46px;height:46px;border-radius:12px;background:var(--grad);color:#fff;display:grid;place-items:center;font-weight:900;font-size:16px;box-shadow:0 8px 20px rgba(58,111,247,.34)}
.login-card .logo-name{font-weight:800;font-size:18px}
.login-card .logo-sub{font-size:12px;color:var(--muted);font-weight:600;letter-spacing:.3px}
.login-card h1{font-size:24px;font-weight:900;color:var(--text);margin-bottom:6px}
.login-card .sub{font-size:13.5px;color:var(--muted);margin-bottom:24px}
.login-field{margin-bottom:14px}
.login-field label{display:block;font-size:13px;font-weight:800;color:var(--text);margin-bottom:6px}
.login-field input{width:100%;padding:12px 14px;border:1px solid var(--border-2);border-radius:11px;font-size:14.5px;font-family:inherit;color:var(--text);background:#fff;transition:.2s}
.login-field input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 4px rgba(58,111,247,.14)}
.login-btn{width:100%;padding:13px;border:none;border-radius:12px;background:var(--grad);color:#fff;font-weight:800;font-size:15px;cursor:pointer;box-shadow:0 10px 24px rgba(58,111,247,.34);transition:.2s;letter-spacing:.3px;margin-top:6px}
.login-btn:hover{transform:translateY(-2px);box-shadow:0 14px 32px rgba(58,111,247,.46)}
.login-err{display:none;background:rgba(239,68,68,.10);color:var(--danger);border:1px solid rgba(239,68,68,.3);padding:10px 12px;border-radius:10px;font-size:13px;font-weight:700;margin-bottom:14px}
.login-err.show{display:block}
.login-foot{margin-top:18px;font-size:12px;color:var(--muted-2);text-align:center;line-height:1.7}
.login-foot code{background:rgba(58,111,247,.1);color:var(--accent);padding:2px 6px;border-radius:5px;font-size:11.5px;font-weight:700}
.cred-fill{cursor:pointer;transition:all .15s}
.cred-fill:hover{background:rgba(58,111,247,.22)!important;color:#1f4fd0!important;transform:translateY(-1px)}
.login-reset{
  display:block;width:100%;margin-top:18px;padding:10px 14px;
  background:transparent;border:1px dashed var(--border);
  border-radius:8px;font-size:12.5px;color:var(--muted);
  cursor:pointer;transition:all .2s;font-family:inherit;
}
.login-reset:hover{border-color:var(--danger);color:var(--danger);background:rgba(239,68,68,.04)}

/* ===== 后台主框架 ===== */
.adm-shell{display:grid;grid-template-columns:240px 1fr;min-height:100vh}
.adm-side{background:linear-gradient(180deg,#eef3fc,#f5f8fe);border-right:1px solid var(--border);padding:22px 16px;position:sticky;top:0;height:100vh;overflow:auto}
.adm-side .brand{display:flex;align-items:center;gap:10px;padding:6px 6px 18px;border-bottom:1px solid var(--border);margin-bottom:16px}
.adm-side .brand-mark{width:38px;height:38px;border-radius:11px;background:var(--grad);color:#fff;display:grid;place-items:center;font-weight:900;font-size:14px;box-shadow:0 6px 16px rgba(58,111,247,.34)}
.adm-side .brand-text{font-weight:800;font-size:15px}
.adm-side .brand-text small{display:block;font-size:11px;color:var(--muted);font-weight:600}
.adm-nav{display:grid;gap:4px}
.adm-nav button{background:none;border:none;text-align:left;padding:10px 12px;border-radius:10px;font-size:14px;font-weight:700;color:var(--muted);cursor:pointer;transition:.18s;display:flex;align-items:center;gap:9px;font-family:inherit}
.adm-nav button:hover{background:rgba(58,111,247,.08);color:var(--accent)}
.adm-nav button.active{background:rgba(58,111,247,.12);color:var(--accent);font-weight:800}
.adm-nav button svg{width:18px;height:18px}
.adm-side .foot{margin-top:auto;padding-top:18px;border-top:1px solid var(--border);font-size:12px;color:var(--muted-2)}
.adm-side .foot a{display:block;color:var(--accent);font-weight:700;padding:6px 0}

.adm-main{padding:24px 28px;overflow:auto;max-width:100%}
.adm-topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px}
.adm-topbar h2{font-size:22px;font-weight:900;color:var(--text)}
.adm-topbar .user{font-size:13px;color:var(--muted);font-weight:700}
.adm-topbar .user b{color:var(--accent)}

/* ===== 卡片/通用 ===== */
.adm-card{background:#fff;border:1px solid var(--border);border-radius:16px;padding:20px;box-shadow:var(--shadow);margin-bottom:18px}
.adm-card h3{font-size:16px;font-weight:800;color:var(--text);margin-bottom:14px;display:flex;align-items:center;gap:8px}
.adm-card h3::before{content:"";width:4px;height:18px;background:var(--grad);border-radius:2px}
.btn{display:inline-flex;align-items:center;gap:7px;padding:9px 16px;border-radius:10px;font-weight:800;font-size:13.5px;cursor:pointer;border:none;transition:.18s;font-family:inherit}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 18px rgba(58,111,247,.32)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(58,111,247,.42)}
.btn-ghost{background:#fff;color:var(--text);border:1px solid var(--border-2)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn-outline{background:transparent;color:var(--accent);border:1px solid rgba(58,111,247,.42)}
.btn-outline:hover{background:rgba(58,111,247,.08)}
.btn-danger{background:rgba(239,68,68,.1);color:var(--danger);border:1px solid rgba(239,68,68,.3)}
.btn-danger:hover{background:rgba(239,68,68,.18)}
.btn svg{width:14px;height:14px}

/* ===== 页面列表（PPT风格） ===== */
.page-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.page-card{background:#fff;border:1px solid var(--border);border-radius:16px;padding:18px;box-shadow:var(--shadow);transition:.2s;display:flex;flex-direction:column;gap:12px}
.page-card:hover{transform:translateY(-3px);border-color:rgba(58,111,247,.32);box-shadow:var(--shadow-lg)}
.page-card .pc-icon{width:46px;height:46px;border-radius:11px;background:linear-gradient(135deg,rgba(58,111,247,.14),rgba(106,138,240,.10));display:grid;place-items:center;color:var(--accent);font-weight:900;font-size:18px}
.page-card .pc-name{font-weight:800;font-size:15px;color:var(--text)}
.page-card .pc-desc{font-size:12.5px;color:var(--muted);font-weight:600}
.page-card .pc-meta{display:flex;gap:8px;font-size:11.5px;color:var(--muted-2);font-weight:700}
.page-card .pc-meta span{background:rgba(58,111,247,.08);color:var(--accent);padding:3px 8px;border-radius:6px}
.page-card .pc-actions{display:flex;gap:8px;margin-top:auto}
.page-card .pc-actions .btn{flex:1;justify-content:center}

/* ===== 编辑器 ===== */
.editor-bar{background:#fff;border:1px solid var(--border);border-radius:14px;padding:12px 16px;margin-bottom:14px;display:flex;justify-content:space-between;align-items:center;box-shadow:var(--shadow);position:sticky;top:0;z-index:10;gap:12px;flex-wrap:wrap}
.editor-bar .left{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.editor-bar .pg-name{font-weight:800;color:var(--text);font-size:14px;background:rgba(58,111,247,.1);color:var(--accent);padding:6px 12px;border-radius:8px}
.editor-bar .hint{font-size:12px;color:var(--muted-2);font-weight:600;background:#fff8e6;color:#a16207;padding:5px 10px;border-radius:7px;border:1px solid #fde68a}
.editor-bar .right{display:flex;gap:8px;flex-wrap:wrap}
.editor-bar .right .btn{padding:7px 12px;font-size:13px}

.editor-frame-wrap{background:#fff;border:1px solid var(--border);border-radius:16px;overflow:hidden;box-shadow:var(--shadow);position:relative}
.editor-frame-wrap .frame-toolbar{display:flex;justify-content:space-between;align-items:center;padding:10px 16px;background:linear-gradient(180deg,#f5f8fe,#fff);border-bottom:1px solid var(--border);font-size:12.5px;color:var(--muted);font-weight:700}
.editor-frame-wrap .frame-toolbar b{color:var(--text)}
.editor-frame{width:100%;height:780px;border:none;background:#fff;display:block}

/* editor overlay (highlight selected in iframe via this main window) */
.editor-help{background:linear-gradient(135deg,rgba(58,111,247,.08),rgba(106,138,240,.04));border:1px solid var(--border-2);border-radius:14px;padding:16px 20px;margin-bottom:14px;font-size:13px;color:var(--text);font-weight:600;line-height:1.8}
.editor-help b{color:var(--accent)}
.editor-help ul{padding-left:18px;margin-top:6px}
.editor-help li{margin:2px 0}

/* ===== 表单数据 ===== */
.data-toolbar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:16px}
.data-toolbar input,.data-toolbar select{padding:9px 13px;border:1px solid var(--border-2);border-radius:10px;background:#fff;font-size:13.5px;color:var(--text);font-family:inherit;min-width:160px}
.data-toolbar input:focus,.data-toolbar select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(58,111,247,.14)}
.data-summary{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:14px}
.data-summary .stat{background:#fff;border:1px solid var(--border);border-radius:12px;padding:12px 16px;box-shadow:var(--shadow);flex:1;min-width:120px}
.data-summary .stat b{font-size:22px;font-weight:900;color:var(--accent);display:block}
.data-summary .stat span{font-size:12px;color:var(--muted);font-weight:700}
.data-table{width:100%;background:#fff;border:1px solid var(--border);border-radius:14px;overflow:hidden;border-collapse:separate;border-spacing:0;box-shadow:var(--shadow)}
.data-table th,.data-table td{padding:11px 14px;text-align:left;font-size:13px;border-bottom:1px solid var(--border)}
.data-table th{background:linear-gradient(180deg,#f5f8fe,#eef3fc);font-weight:800;color:var(--text);font-size:12.5px;letter-spacing:.3px}
.data-table tr:last-child td{border-bottom:none}
.data-table tr:hover td{background:rgba(58,111,247,.04)}
.data-empty{padding:60px 20px;text-align:center;color:var(--muted);background:#fff;border:1px dashed var(--border-2);border-radius:14px;font-size:14px}
.data-table .tag{display:inline-block;background:rgba(58,111,247,.1);color:var(--accent);padding:2px 8px;border-radius:5px;font-size:11.5px;font-weight:700}

/* ===== 设置 ===== */
.setting-row{display:grid;grid-template-columns:200px 1fr;gap:14px;align-items:center;padding:12px 0;border-top:1px solid var(--border)}
.setting-row:first-child{border-top:none}
.setting-row label{font-size:13.5px;font-weight:800;color:var(--text)}
.setting-row input{width:100%;padding:10px 13px;border:1px solid var(--border-2);border-radius:10px;background:#fff;font-size:13.5px;color:var(--text);font-family:inherit}
.setting-row input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(58,111,247,.14)}

/* ===== Toast ===== */
.toast{position:fixed;bottom:24px;right:24px;background:var(--text);color:#fff;padding:12px 20px;border-radius:11px;font-size:13.5px;font-weight:700;box-shadow:var(--shadow-lg);z-index:9999;display:none;animation:slideIn .25s}
.toast.show{display:block}
.toast.success{background:var(--success)}
.toast.error{background:var(--danger)}
@keyframes slideIn{from{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}

/* ===== Responsive ===== */
@media(max-width:980px){
  .adm-shell{grid-template-columns:1fr}
  .adm-side{position:relative;height:auto;border-right:none;border-bottom:1px solid var(--border)}
  .page-grid{grid-template-columns:1fr 1fr}
  .editor-frame{height:600px}
}
@media(max-width:560px){
  .page-grid{grid-template-columns:1fr}
  .setting-row{grid-template-columns:1fr}
  .editor-frame{height:500px}
}