/* ===== 模具设计智慧教学系统 · 门户样式 ===== */

/* 基础变量(浅色) */
:root{
  --primary:#245fb9; --primary-dark:#123f7f; --success:#16815c; --warning:#b8860b; --danger:#b8404b;
  --bg:#eef1f6; --card:#ffffff; --ink:#1c2b45; --muted:#5d6f88; --line:#dfe6f0;
  --shadow:0 8px 24px rgba(24,46,86,.08);
  --nav:#0e2a4f; --nav-ink:#dbe6f4; --nav-sub:#9db4d4;
  --soft:#f7f9fc;
}
/* 深色主题 */
[data-theme="dark"]{
  --primary:#4a86e8; --primary-dark:#2f66bd; --success:#3fb584; --warning:#d1a017; --danger:#e0687a;
  --bg:#101722; --card:#18222f; --ink:#e6edf7; --muted:#9bb0ca; --line:#25313f;
  --shadow:0 8px 24px rgba(0,0,0,.35);
  --nav:#0b1626; --nav-ink:#cadbec; --nav-sub:#8ea6c4;
  --soft:#1e2a38;
}

*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;font-family:"Microsoft YaHei","PingFang SC","Segoe UI",sans-serif;background:var(--bg);color:var(--ink)}
a{color:var(--primary);text-decoration:none}
button{font:inherit;cursor:pointer}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-thumb{background:rgba(120,140,170,.35);border-radius:8px}

/* ===== 布局 ===== */
.app{display:flex;min-height:100vh}
.sidebar{width:236px;flex:0 0 236px;background:var(--nav);color:var(--nav-ink);display:flex;flex-direction:column;position:sticky;top:0;height:100vh;z-index:60}
.brand{display:flex;align-items:center;gap:12px;padding:18px}
.brand-logo{width:42px;height:42px;flex:0 0 42px;border-radius:12px;background:linear-gradient(135deg,#2f7bff,#174ea6);display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:700;color:#fff}
.brand-text strong{display:block;font-size:15px;letter-spacing:.5px;color:#fff}
.brand-text small{display:block;font-size:11px;color:var(--nav-sub);margin-top:2px}

.side-user{margin:0 12px 6px;padding:10px 12px;border-radius:10px;background:rgba(255,255,255,.07);cursor:pointer}
.side-user:hover{background:rgba(255,255,255,.13)}
.side-user-name{font-size:13px;font-weight:600;color:#fff;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.side-user-sub{font-size:11px;color:var(--nav-sub);margin-top:2px}

.nav{flex:1;padding:8px 12px 12px;display:flex;flex-direction:column;gap:2px;overflow:auto}
.nav-item{display:flex;align-items:center;gap:10px;padding:11px 14px;border:none;border-radius:10px;background:transparent;color:var(--nav-ink);font-size:14px;text-align:left;width:100%}
.nav-item:hover{background:rgba(255,255,255,.08)}
.nav-item.active{background:linear-gradient(90deg,#1f5db8,#2b6fd0);color:#fff;font-weight:600}
.nav-item .ic{width:22px;text-align:center;font-size:15px}

.sidebar-foot{padding:12px 18px;border-top:1px solid rgba(255,255,255,.12)}
.deploy-hint{font-size:12px;color:var(--nav-sub)}

.main{flex:1;min-width:0;display:flex;flex-direction:column}
.topbar{position:sticky;top:0;z-index:40;display:flex;align-items:center;gap:14px;padding:12px 24px;background:var(--card);border-bottom:1px solid var(--line)}
.crumb{font-weight:700;font-size:16px}
.spacer{flex:1}
.top-actions{display:flex;gap:8px;align-items:center}
.menu-btn{display:none;padding:6px 11px;border:1px solid var(--line);background:var(--card);color:var(--ink);border-radius:9px}

/* ===== 按钮 ===== */
.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border:1px solid var(--line);background:var(--card);color:var(--ink);border-radius:9px;font-size:13px}
.btn:hover{border-color:var(--primary);color:var(--primary)}
.btn.primary{background:var(--primary);border-color:var(--primary);color:#fff}
.btn.primary:hover{background:var(--primary-dark);color:#fff}
.btn.sm{padding:5px 10px;font-size:12px}
.btn.ghost{background:transparent}
.btn.back{background:transparent;border-color:rgba(255,255,255,.35);color:#fff}
.btn.back:hover{border-color:#fff;color:#fff}
.btn.danger{color:var(--danger);border-color:var(--line)}
.btn.danger:hover{border-color:var(--danger);color:var(--danger)}

/* ===== 面板 ===== */
.content{flex:1;min-width:0;padding:4px 24px 40px}
.panel{display:none}
.panel.active{display:block;animation:fade .18s ease}
@keyframes fade{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}
.section-title{display:flex;align-items:center;gap:8px;margin:22px 0 12px;font-size:17px;font-weight:700}
.section-title .sub{font-size:12px;font-weight:400;color:var(--muted)}
.note{background:var(--soft);border:1px solid var(--line);color:var(--muted);border-radius:10px;padding:12px 14px;font-size:13px;line-height:1.75}
.note.tip{background:rgba(36,95,185,.07);border-color:rgba(36,95,185,.25);color:var(--ink)}
.empty{text-align:center;color:var(--muted);padding:40px}

/* ===== 卡片 ===== */
.cards{display:grid;gap:16px}
.g4{grid-template-columns:repeat(4,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
@media(max-width:1180px){.g4{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(2,1fr)}}
@media(max-width:720px){.g4,.g3,.g2{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px;box-shadow:var(--shadow)}
.card h3{margin:0 0 12px;font-size:16px}
.kpi{font-size:30px;font-weight:700;margin:4px 0}
.kpi.sm{font-size:22px}
.label{color:var(--muted);font-size:13px}
.row{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.mt{margin-top:16px}
.mb{margin-bottom:12px}
.muted{color:var(--muted)}
.small{font-size:12px}

/* ===== 徽标 / 标签 ===== */
.badge{display:inline-block;padding:3px 10px;border-radius:20px;font-size:12px;font-weight:600;white-space:nowrap}
.b-g{background:#e5f6ee;color:#1c7a57}
.b-b{background:#e6effc;color:#1f5db8}
.b-o{background:#fff3e0;color:#b26a00}
.b-r{background:#fdeef0;color:#c0392b}
.b-gry{background:var(--soft);color:var(--muted)}
.tag{display:inline-block;background:var(--soft);color:var(--muted);border:1px solid var(--line);border-radius:6px;padding:2px 8px;font-size:11px;margin:2px 4px 2px 0}

/* ===== 表格 ===== */
table{width:100%;border-collapse:collapse;font-size:13px}
th,td{padding:11px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
th{color:var(--muted);font-weight:600;background:var(--soft)}
tbody tr:hover{background:rgba(36,95,185,.04)}

/* ===== 工具条 / 筛选 ===== */
.toolbar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin:12px 0}
input,select,textarea{font:inherit;color:var(--ink);background:var(--card);border:1px solid var(--line);border-radius:9px;padding:8px 12px}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--primary)}
.search{min-width:240px;flex:1;max-width:360px}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{padding:6px 13px;border:1px solid var(--line);border-radius:20px;background:var(--card);color:var(--muted);font-size:12px}
.chip:hover{border-color:var(--primary);color:var(--primary)}
.chip.on{background:var(--primary);border-color:var(--primary);color:#fff;font-weight:600}

/* ===== 应用卡片 ===== */
.app-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:16px}
.app-card{display:flex;flex-direction:column;gap:10px;padding:18px;border:1px solid var(--line);border-radius:16px;background:var(--card);box-shadow:var(--shadow);cursor:pointer;transition:.2s}
.app-card:hover{border-color:var(--primary);transform:translateY(-2px)}
.app-card .hd{display:flex;gap:12px;align-items:center}
.app-icon{width:44px;height:44px;flex:0 0 44px;border-radius:11px;display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:700;color:#fff}
.app-title{font-weight:600;font-size:14px;line-height:1.45}
.app-meta{font-size:11px;color:var(--muted);margin-top:2px}
.app-desc{font-size:13px;color:var(--muted);line-height:1.7}
.app-goal{font-size:12px;line-height:1.7;padding:9px 11px;border-radius:9px;background:var(--soft);border-left:3px solid var(--primary)}
.app-actions{display:flex;gap:8px;justify-content:flex-end;align-items:center;flex-wrap:wrap}

/* ===== 应用阅读器 ===== */
.app-reader{position:fixed;inset:0;z-index:200;display:none;flex-direction:column;background:var(--card)}
.app-reader.open{display:flex}
body.reader-on{overflow:hidden}
.reader-bar{display:flex;align-items:center;gap:10px;padding:10px 18px;background:var(--nav);color:#fff;flex:0 0 auto}
.reader-title{font-weight:600;font-size:14px;max-width:44%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.reader-warn{font-size:12px;color:#ffd7a8}
.reader-frame{flex:1;width:100%;border:none;background:#fff}

/* ===== 进度条 ===== */
.bar-wrap{height:8px;border-radius:6px;overflow:hidden;background:var(--line)}
.bar{height:100%;border-radius:6px;background:var(--primary);transition:width .4s ease}
.bar.ok{background:var(--success)}
.bar.warn{background:var(--warning)}

/* ===== 知识地图 ===== */
.mod-card{display:flex;flex-direction:column;gap:10px}
.mod-points{margin:0;padding-left:18px;color:var(--muted);font-size:13px;line-height:1.9}
.mod-apps{display:flex;gap:8px;flex-wrap:wrap}

/* ===== 响应式 ===== */
@media(max-width:900px){
  .sidebar{position:fixed;left:0;top:0;transform:translateX(-100%);transition:transform .22s ease}
  .sidebar.open{transform:none}
  .menu-btn{display:inline-block}
  .content{padding:4px 16px 32px}
  .topbar{padding:12px 16px}
  .reader-title{max-width:36%}
}

/* ===== 登录弹窗 ===== */
.mask{position:fixed;inset:0;z-index:300;display:none;align-items:center;justify-content:center;background:rgba(11,22,38,.55)}
.mask.open{display:flex}
.modal{width:420px;max-width:92vw;max-height:92vh;overflow:auto;padding:22px;border:1px solid var(--line);border-radius:16px;background:var(--card);box-shadow:0 20px 60px rgba(10,22,40,.35)}
.modal h3{margin:0 0 6px;font-size:17px}
.modal .hint{font-size:12px;line-height:1.75;color:var(--muted);white-space:pre-line}
.modal label{display:block;margin:12px 0 4px;font-size:12px;color:var(--muted)}
.modal select,.modal input{width:100%}
.modal-actions{display:flex;gap:8px;justify-content:flex-end;margin-top:18px}
.err{min-height:16px;margin-top:8px;font-size:12px;color:var(--danger)}
.divider{margin:18px 0 6px;font-size:12px;color:var(--muted)}

/* ===== 侧栏入口按钮 ===== */
.gate-btn{width:100%;margin-top:10px;padding:8px 10px;border:1px solid rgba(255,255,255,.25);border-radius:9px;background:transparent;color:var(--nav-ink);font-size:12px;text-align:center}
.gate-btn:hover{background:rgba(255,255,255,.12);color:#fff}

/* ===== 管理后台布局 ===== */
.admin-wrap{min-height:100vh;display:flex;flex-direction:column;background:var(--bg)}
.admin-top{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:14px;padding:12px 24px;background:var(--card);border-bottom:1px solid var(--line)}
.admin-main{flex:1;padding:24px}
.login-card{max-width:440px;margin:40px auto}
.brand-logo.sm{width:34px;height:34px;flex:0 0 34px;font-size:17px;border-radius:10px}