/* ============================================================
   软件库导航站 - 管理后台样式
   ============================================================ */
*{box-sizing:border-box;margin:0;padding:0}
:root{
  --font:"Inter","HarmonyOS Sans SC","Microsoft YaHei UI","PingFang SC","Segoe UI",system-ui,-apple-system,sans-serif;
  --bg:#f4f6fb;--surface:#fff;--surface-2:#f0f3f9;
  --text:#1c2536;--muted:#64748b;
  --border:#e3e8f1;--border-strong:#c8d2e0;
  --accent:#2f6bff;--accent-2:#0ea5e9;--accent-soft:rgba(47,107,255,.1);
  --danger:#dc2626;--danger-soft:rgba(220,38,38,.08);
  --shadow:0 1px 2px rgba(28,37,54,.05),0 1px 3px rgba(28,37,54,.07);
  --radius:14px;
}
body{font-family:var(--font);background:var(--bg);color:var(--text);min-height:100vh;-webkit-font-smoothing:antialiased}
.hidden{display:none!important}
a{color:var(--accent);text-decoration:none}

/* ---------- 按钮 / 输入 ---------- */
.btn{border:0;border-radius:10px;padding:10px 20px;font-size:14px;cursor:pointer;font-family:inherit;font-weight:600;
  transition:transform .15s,box-shadow .15s,background .15s;display:inline-flex;align-items:center;gap:8px}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 6px 16px -6px rgba(47,107,255,.5)}
.btn-primary:hover{background:#2458e8}
.btn-ghost{background:var(--surface);color:var(--text);border:1px solid var(--border)}
.btn-ghost:hover{border-color:var(--border-strong)}
.btn-danger{background:var(--danger);color:#fff;box-shadow:0 6px 16px -6px rgba(220,38,38,.5)}
.btn-block{width:100%;justify-content:center}
.btn:disabled{opacity:.55;cursor:not-allowed;transform:none}
input[type=text],input[type=password],select{
  width:100%;padding:10px 13px;border:1px solid var(--border);border-radius:10px;background:var(--surface);
  color:var(--text);font-size:14px;font-family:inherit;outline:none;transition:border-color .15s,box-shadow .15s}
input:focus,select:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
input::placeholder{color:#9aa8bc}
input[type=file]{font-size:13px;color:var(--muted)}

/* ---------- 登录 ---------- */
.login-view{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px;
  background:radial-gradient(900px 480px at 50% -80px,#e3ecff 0%,transparent 60%),var(--bg)}
.login-card{width:min(360px,100%);background:var(--surface);border:1px solid var(--border);border-radius:18px;
  padding:36px 30px;box-shadow:0 24px 60px -24px rgba(28,37,54,.25);text-align:center}
.login-logo{width:58px;height:58px;margin:0 auto 14px;border-radius:16px;display:flex;align-items:center;justify-content:center;
  color:#fff;background:linear-gradient(135deg,var(--accent),var(--accent-2));box-shadow:0 10px 22px -8px rgba(47,107,255,.55)}
.login-logo svg{width:28px;height:28px}
.login-card h1{font-size:21px;font-weight:800}
.login-tip{font-size:13px;color:var(--muted);margin:7px 0 20px}
.login-card input{margin-bottom:14px;text-align:center}
.back-home{display:inline-block;margin-top:16px;font-size:13px;color:var(--muted)}
.back-home:hover{color:var(--accent)}

/* ---------- 布局 ---------- */
.admin-view{display:flex;min-height:100vh}
.side{width:212px;flex:none;background:#101a30;color:#c9d6ef;display:flex;flex-direction:column;padding:18px 12px}
.brand{display:flex;align-items:center;gap:10px;padding:4px 10px 18px;color:#fff;font-weight:700;font-size:14.5px}
.brand svg{width:20px;height:20px;color:#5aa5ff}
#nav{display:flex;flex-direction:column;gap:2px;flex:1}
.nav-item{display:flex;align-items:center;gap:10px;width:100%;padding:11px 12px;border:0;border-radius:10px;
  background:none;color:#a8b8d4;font-size:14px;font-family:inherit;cursor:pointer;text-align:left;transition:background .15s,color .15s}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-item.active{background:var(--accent);color:#fff;box-shadow:0 8px 18px -8px rgba(47,107,255,.7)}
.side-foot{display:flex;flex-direction:column;gap:4px;padding-top:12px;border-top:1px solid rgba(255,255,255,.08)}
.side-link{background:none;border:0;color:#8fa0bf;font-size:13px;cursor:pointer;font-family:inherit;text-align:left;padding:8px 12px;border-radius:8px}
.side-link:hover{color:#fff;background:rgba(255,255,255,.06)}
.main{flex:1;min-width:0;padding:26px 30px 60px;max-width:980px}
.topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.topbar h2{font-size:21px;font-weight:800}
.save-hint{font-size:13px;color:var(--muted)}
.panel{display:none}
.panel.active{display:block;animation:fadeIn .25s ease}
@keyframes fadeIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.panel-note{font-size:13.5px;color:var(--muted);margin-bottom:16px;line-height:1.6}

/* ---------- 表单卡片 ---------- */
.card-form{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:20px;margin-bottom:16px;box-shadow:var(--shadow)}
.card-form label{display:block;font-size:13px;font-weight:600;color:var(--muted);margin:0 0 7px}
.card-form label:not(:first-child){margin-top:16px}
.card-form input[type=text],.card-form input[type=password],.card-form select{margin-bottom:4px}
.form-title{font-size:15px;font-weight:700;margin-bottom:14px}
.form-row{display:flex;align-items:center;gap:14px;margin-top:18px;flex-wrap:wrap}
.form-note{font-size:12.5px;color:var(--muted)}
.inline-row{display:flex;gap:10px}
.inline-row input{flex:1}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.tiny{font-size:12px;color:var(--muted);margin-top:10px!important}
.checkbox{display:flex!important;align-items:center;gap:8px;font-size:13.5px!important;color:var(--text)!important;margin-top:8px}
.checkbox input{width:auto}
.card-form.danger{border-color:rgba(220,38,38,.3);background:rgba(220,38,38,.02)}

/* ---------- 列表 ---------- */
.list{display:flex;flex-direction:column;gap:10px}
.list-item{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:13px 16px;
  display:flex;align-items:center;justify-content:space-between;gap:12px;box-shadow:var(--shadow)}
.list-item .li-main{min-width:0;flex:1}
.list-item .li-title{font-size:14px;font-weight:600}
.list-item .li-sub{font-size:12px;color:var(--muted);margin-top:3px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.li-ops{display:flex;gap:6px;flex:none}
.op-btn{width:32px;height:32px;border-radius:8px;border:1px solid var(--border);background:var(--surface);color:var(--muted);
  cursor:pointer;display:flex;align-items:center;justify-content:center;transition:color .15s,border-color .15s,background .15s}
.op-btn:hover{color:var(--accent);border-color:var(--accent-soft);background:var(--accent-soft)}
.op-btn.danger:hover{color:var(--danger);border-color:var(--danger-soft);background:var(--danger-soft)}
.op-btn svg{width:14px;height:14px}
.li-badge{font-size:11px;color:var(--muted);background:var(--surface-2);border:1px solid var(--border);padding:2px 8px;border-radius:999px;flex:none}

/* ---------- 图标选择 ---------- */
.icon-picker{display:grid;grid-template-columns:repeat(8,1fr);gap:6px;max-height:150px;overflow-y:auto;
  border:1px solid var(--border);border-radius:10px;padding:8px;background:var(--surface-2)}
.icon-opt{height:34px;border-radius:8px;border:1px solid transparent;background:var(--surface);color:var(--muted);
  cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .15s}
.icon-opt svg{width:17px;height:17px}
.icon-opt:hover{color:var(--accent);border-color:var(--accent-soft)}
.icon-opt.active{background:var(--accent);color:#fff;border-color:var(--accent)}

/* ---------- 主题选择 ---------- */
.theme-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:14px;margin-bottom:18px}
.theme-card{cursor:pointer;border-radius:var(--radius);border:2px solid var(--border);background:var(--surface);
  overflow:hidden;transition:border-color .15s,transform .15s,box-shadow .15s}
.theme-card:hover{transform:translateY(-2px);box-shadow:0 12px 24px -12px rgba(28,37,54,.2)}
.theme-card.active{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.tc-preview{height:86px;padding:12px;display:flex;flex-direction:column;gap:6px}
.tc-preview .p-bar{height:8px;border-radius:4px;background:rgba(0,0,0,.08)}
.tc-preview .p-bar.w60{width:60%}
.tc-preview .p-card{height:26px;border-radius:6px;background:rgba(255,255,255,.9);display:flex;gap:5px;padding:5px}
.tc-preview .p-card i{flex:1;border-radius:3px}
.tc-name{font-size:13px;font-weight:600;padding:10px 12px;display:flex;align-items:center;justify-content:space-between}
.tc-name .check{color:var(--accent)}

/* ---------- Toast / Modal ---------- */
#toast{position:fixed;left:50%;bottom:26px;transform:translateX(-50%) translateY(16px);background:#0f172a;color:#fff;
  padding:10px 20px;border-radius:999px;font-size:13px;opacity:0;pointer-events:none;z-index:300;
  box-shadow:0 10px 24px -8px rgba(0,0,0,.45);transition:opacity .25s,transform .25s;max-width:86vw}
#toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
#toast.err{background:#b91c1c}
.modal-mask{position:fixed;inset:0;background:rgba(15,23,42,.5);z-index:200;display:flex;align-items:center;justify-content:center;padding:20px;backdrop-filter:blur(3px)}
.modal{background:#fff;border-radius:16px;padding:24px;width:min(440px,100%);box-shadow:0 24px 60px -20px rgba(0,0,0,.4)}
.modal h3{font-size:16px;font-weight:700;margin-bottom:10px}
.modal .modal-text{font-size:13.5px;color:var(--muted);line-height:1.7;margin-bottom:18px}
.modal .form-row{justify-content:flex-end;margin-top:0}

@media (max-width:760px){
  .admin-view{flex-direction:column}
  .side{width:100%;flex-direction:row;align-items:center;gap:6px;padding:12px;overflow-x:auto}
  .brand{display:none}
  #nav{flex-direction:row;gap:4px}
  .nav-item{flex:none;padding:9px 12px;font-size:13px}
  .side-foot{display:none}
  .main{padding:18px 14px 50px}
  .grid2{grid-template-columns:1fr}
}