/* Aurora VPN Panel - Design System v3 (restored)
   v3 look & feel: deep navy + green accent, glassy cards
   FIX: mono/sans stacks now include Chinese fallbacks (no mojibake) */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --primary:#1E3A5F;
  --primary-2:#27496E;
  --primary-3:#35607F;
  --accent:#22C55E;
  --warn:#F59E0B;
  --err:#EF4444;
  --info:#38BDF8;
  --teal:#2DD4BF;
  --bg:#080D16;
  --bg2:#0D1522;
  --bg3:#111B2C;
  --surface:rgba(148,178,215,.05);
  --surface2:rgba(148,178,215,.08);
  --surface3:rgba(148,178,215,.13);
  --border:rgba(148,178,215,.10);
  --border2:rgba(148,178,215,.18);
  --text:#E8EEF7;
  --text2:rgba(232,238,247,.64);
  --text3:rgba(232,238,247,.40);
  --grad:linear-gradient(135deg,#1E3A5F 0%,#27496E 55%,#35607F 100%);
  --grad-acc:linear-gradient(135deg,#22C55E 0%,#38BDF8 100%);
  --radius:12px;
  --shadow:0 6px 28px rgba(2,8,18,.55);
  --mono:"JetBrains Mono","Noto Sans SC","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",Consolas,monospace;
  --sans:"DM Sans","Noto Sans SC","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
}
html.light{
  --bg:#EEF2F7;--bg2:#F7FAFC;--bg3:#FFFFFF;
  --surface:rgba(30,58,95,.04);--surface2:rgba(30,58,95,.07);--surface3:rgba(30,58,95,.12);
  --border:rgba(30,58,95,.10);--border2:rgba(30,58,95,.18);
  --text:#0F1B2D;--text2:rgba(15,27,45,.62);--text3:rgba(15,27,45,.42);
  --grad:linear-gradient(135deg,#1E3A5F 0%,#27496E 55%,#35607F 100%);
  --shadow:0 6px 24px rgba(30,58,95,.12);
}
html,body{height:100%;background:var(--bg);color:var(--text);font-family:var(--sans);font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased}
h1,h2,h3,.brand,.stat-card .value,.metric .value{font-family:"Space Grotesk","Noto Sans SC",system-ui,sans-serif;letter-spacing:.2px}

/* Grid backdrop */
.grid-bg{position:fixed;inset:0;z-index:-1;pointer-events:none;background:
  linear-gradient(rgba(56,189,248,.035) 1px,transparent 1px),
  linear-gradient(90deg,rgba(56,189,248,.035) 1px,transparent 1px);
  background-size:36px 36px;
  mask-image:radial-gradient(ellipse at 50% 0%,black 40%,transparent 90%);
  -webkit-mask-image:radial-gradient(ellipse at 50% 0%,black 40%,transparent 90%)}
html.light .grid-bg{background:
  linear-gradient(rgba(30,58,95,.05) 1px,transparent 1px),
  linear-gradient(90deg,rgba(30,58,95,.05) 1px,transparent 1px);
  background-size:36px 36px}

/* Login */
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}
.login-box{background:var(--bg3);border:1px solid var(--border2);border-radius:18px;padding:40px 36px;width:100%;max-width:380px;text-align:center;box-shadow:var(--shadow)}
.login-logo{width:68px;height:68px;margin:0 auto 20px;border-radius:16px;background:var(--grad);display:flex;align-items:center;justify-content:center;font-size:32px;box-shadow:0 10px 32px rgba(30,58,95,.45);position:relative}
.login-logo::after{content:'';position:absolute;inset:0;border-radius:16px;border:1px solid rgba(56,189,248,.25)}
.login-title{font-size:24px;font-weight:800;color:var(--text)}
.login-sub{font-size:13px;color:var(--text3);margin:6px 0 26px;font-family:var(--mono)}
.login-input{width:100%;padding:13px 16px;border-radius:10px;border:1px solid var(--border2);background:var(--bg);color:var(--text);font-size:14px;outline:none;transition:border-color .2s,box-shadow .2s}
.login-input:focus{border-color:var(--info);box-shadow:0 0 0 3px rgba(56,189,248,.12)}
.login-btn{width:100%;margin-top:16px;padding:13px;border-radius:10px;border:none;background:var(--grad);color:#fff;font-size:14px;font-weight:700;cursor:pointer;transition:filter .2s,transform .1s}
.login-btn:hover{filter:brightness(1.12)}
.login-btn:active{transform:scale(.98)}
.login-error{color:var(--err);font-size:12px;margin-top:10px;min-height:18px}

/* App shell */
.app{display:block}
.topbar{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;border-bottom:1px solid var(--border);background:var(--bg2);position:sticky;top:0;z-index:50}
.topbar .brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:16px;cursor:pointer}
.topbar .brand .ico{width:32px;height:32px;border-radius:9px;background:var(--grad);display:flex;align-items:center;justify-content:center;font-size:17px;box-shadow:0 4px 16px rgba(30,58,95,.4)}
.topbar .brand .sub{font-size:11px;color:var(--text3);font-weight:500;font-family:var(--mono)}
.topbar .actions{display:flex;gap:8px}
.icon-btn{width:32px;height:32px;border-radius:8px;border:1px solid var(--border);background:var(--surface);color:var(--text2);font-size:14px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .15s}
.icon-btn:hover{background:var(--surface2);color:var(--text)}
.container{max-width:1080px;margin:0 auto;padding:18px 16px 96px}

/* Page header strip */
.page-head{display:flex;align-items:flex-end;justify-content:space-between;gap:12px;margin-bottom:18px;padding-bottom:14px;border-bottom:1px solid var(--border)}
.page-title{font-size:20px;font-weight:800;line-height:1.2}
.page-title .en{display:block;font-size:10px;color:var(--text3);font-family:var(--mono);letter-spacing:2px;text-transform:uppercase;margin-top:4px}
.page-sub{font-size:12px;color:var(--text3);margin-top:4px}
.live-badge{display:inline-flex;align-items:center;gap:6px;font-size:11px;font-family:var(--mono);color:var(--accent);background:rgba(34,197,94,.08);border:1px solid rgba(34,197,94,.2);border-radius:6px;padding:4px 10px;flex-shrink:0}
.live-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--accent);animation:pulse 2s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1;box-shadow:0 0 0 0 rgba(34,197,94,.4)}50%{opacity:.75;box-shadow:0 0 0 5px rgba(34,197,94,0)}}

/* Tabs - segmented control */
.tabs{display:flex;gap:4px;margin-bottom:18px;background:var(--surface2);border:1px solid var(--border);border-radius:10px;padding:4px;width:fit-content;flex-wrap:wrap}
.tab{padding:7px 14px;border-radius:7px;border:none;background:transparent;color:var(--text3);font-size:13px;font-weight:600;cursor:pointer;transition:all .15s}
.tab:hover{color:var(--text2)}
.tab.active{background:var(--bg3);color:var(--text);box-shadow:0 2px 8px rgba(2,8,18,.3)}

/* Cards - flat cockpit panels */
.panel{background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius);padding:16px;margin-bottom:14px;box-shadow:0 2px 10px rgba(2,8,18,.18)}
.panel .head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.panel .head .title{font-size:12px;font-weight:700;color:var(--text2);letter-spacing:.5px;display:flex;align-items:center;gap:6px}
.panel .head .title::before{content:'';width:3px;height:14px;border-radius:2px;background:var(--grad-acc)}
.panel .head .extra{font-size:11px;color:var(--text3);font-family:var(--mono)}

/* Server rows */
.server-rows{display:grid;gap:12px}
.server-row{display:grid;grid-template-columns:210px 1fr auto;align-items:center;gap:18px;background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius);padding:14px 18px;cursor:pointer;transition:all .15s;position:relative;overflow:hidden}
.server-row:hover{border-color:var(--border2);transform:translateX(3px)}
.server-row::before{content:'';position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--grad-acc);opacity:0;transition:opacity .2s}
.server-row:hover::before{opacity:1}
.server-row .sr-ident{display:flex;align-items:center;gap:12px}
.server-row .sr-ico{width:38px;height:38px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:18px;flex-shrink:0}
.sr-ico.gold{background:linear-gradient(135deg,#FBBF24,#D97706)}
.sr-ico.silver{background:linear-gradient(135deg,#E2E8F0,#64748B)}
.sr-ico.vip{background:linear-gradient(135deg,#818CF8,#4F46E5)}
.server-row .sr-name{font-weight:800;font-size:15px}
.server-row .sr-role{font-size:11px;color:var(--text3)}
.server-row .sr-ip{font-size:11px;color:var(--text3);font-family:var(--mono);margin-top:2px}
.server-row .sr-metrics{display:grid;grid-template-columns:repeat(4,minmax(100px,1fr));gap:10px}
.sr-metric .sm-label{font-size:10px;color:var(--text3);font-family:var(--mono);text-transform:uppercase;letter-spacing:.8px;margin-bottom:3px}
.sr-metric .sm-value{font-size:15px;font-weight:700;font-family:var(--mono)}
.sr-metric .sm-bar{height:4px;border-radius:2px;background:var(--surface3);overflow:hidden;margin-top:4px}
.sr-metric .sm-bar .fill{height:100%;border-radius:2px;transition:width .5s}
.server-row .sr-status{display:flex;flex-direction:column;align-items:flex-end;gap:6px}
.sr-online{display:inline-flex;align-items:center;gap:5px;font-size:11px;font-weight:700;font-family:var(--mono)}
.sr-online .dot{width:8px;height:8px;border-radius:50%}
.sr-online.up{color:var(--accent)}
.sr-online.up .dot{background:var(--accent);animation:pulse 2s ease-in-out infinite}
.sr-online.down{color:var(--err)}
.sr-online.down .dot{background:var(--err)}
.sr-traffic{font-size:11px;color:var(--text3);font-family:var(--mono);text-align:right}

/* Node cards - dense grid */
.node-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:12px}
.node-card{background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius);padding:14px;cursor:pointer;transition:all .15s;position:relative}
.node-card:hover{border-color:var(--border2);transform:translateY(-1px)}
.node-card .nc-top{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.node-card .nc-ico{width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:17px;flex-shrink:0}
.nc-ico.gold{background:linear-gradient(135deg,#FBBF24,#D97706)}
.nc-ico.silver{background:linear-gradient(135deg,#E2E8F0,#64748B)}
.nc-ico.vip{background:linear-gradient(135deg,#818CF8,#4F46E5)}
.node-card .nc-name{font-weight:800;font-size:14px}
.node-card .nc-role{font-size:11px;color:var(--text3)}
.node-card .nc-status{position:absolute;top:14px;right:14px;width:8px;height:8px;border-radius:50%;background:var(--accent);animation:pulse 2s ease-in-out infinite}
.node-card .nc-meta{font-size:11px;color:var(--text3);line-height:1.9;font-family:var(--mono)}
.node-card .nc-meta b{color:var(--text2);font-weight:600}

/* KPI strip */
.kpi-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-bottom:14px}
.kpi{background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius);padding:12px 14px}
.kpi .k-label{font-size:10px;color:var(--text3);font-family:var(--mono);text-transform:uppercase;letter-spacing:.8px;margin-bottom:6px}
.kpi .k-value{font-size:20px;font-weight:800;font-family:var(--mono)}
.kpi .k-bar{height:4px;border-radius:2px;background:var(--surface3);overflow:hidden;margin-top:8px}
.kpi .k-bar .fill{height:100%;border-radius:2px;background:var(--grad-acc);transition:width .5s}
.kpi .k-sub{font-size:10px;color:var(--text3);font-family:var(--mono);margin-top:4px}

/* Action buttons */
.btn-row{display:flex;flex-wrap:wrap;gap:8px}
.btn{padding:8px 14px;border-radius:8px;border:1px solid var(--border2);background:var(--surface);color:var(--text2);font-size:12px;font-weight:600;cursor:pointer;transition:all .15s}
.btn:hover{background:var(--surface2);color:var(--text)}
.btn.primary{background:var(--grad);color:#fff;border-color:transparent}
.btn.success{background:rgba(34,197,94,.12);color:var(--accent);border-color:rgba(34,197,94,.25)}
.btn.danger{background:rgba(239,68,68,.10);color:var(--err);border-color:rgba(239,68,68,.22)}
.btn.warn{background:rgba(245,158,11,.10);color:var(--warn);border-color:rgba(245,158,11,.22)}
.btn:active{transform:scale(.96)}

/* Subscribe center */
.sub-card{background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius);padding:16px;margin-bottom:14px}
.sub-card .head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.sub-card .head .title{font-size:12px;font-weight:700;color:var(--text2);letter-spacing:.5px;display:flex;align-items:center;gap:6px}
.sub-card .head .title::before{content:'';width:3px;height:14px;border-radius:2px;background:var(--grad-acc)}
.sub-link{display:flex;align-items:center;gap:8px;background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:10px 12px;margin-bottom:12px}
.sub-link input{flex:1;background:transparent;border:none;color:var(--text);font-family:var(--mono);font-size:11px;outline:none}
.sub-actions{display:flex;gap:8px;flex-wrap:wrap}
.qr-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:10px}
.qr-item{background:var(--bg);border:1px solid var(--border);border-radius:10px;padding:12px;text-align:center;cursor:pointer;transition:border-color .15s}
.qr-item:hover{border-color:var(--border2)}
.qr-item .q-name{font-size:12px;font-weight:700;margin-bottom:6px}
.qr-item img{width:120px;height:120px;border-radius:8px;background:#fff}
.qr-item .q-actions{display:flex;justify-content:center;gap:6px;margin-top:8px}
.qr-overlay{position:fixed;inset:0;background:rgba(2,8,18,.8);backdrop-filter:blur(6px);z-index:999;display:none;align-items:center;justify-content:center;padding:20px}
.qr-overlay.show{display:flex}
.qr-modal{background:var(--bg3);border:1px solid var(--border2);border-radius:16px;padding:24px;text-align:center;max-width:360px;width:100%}
.qr-modal .q-title{font-size:15px;font-weight:800;margin-bottom:4px}
.qr-modal .q-sub{font-size:11px;color:var(--text3);font-family:var(--mono);margin-bottom:14px}
.qr-modal .q-canvas{display:flex;justify-content:center;margin-bottom:14px}
.qr-modal .q-canvas img{width:220px;height:220px;border-radius:12px;background:#fff}
.qr-modal .q-link{font-size:10px;color:var(--text3);font-family:var(--mono);word-break:break-all;background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:8px;margin-bottom:12px}

/* Info rows - sparse dividers */
.info-list{display:grid;gap:8px}
.info-row{display:flex;justify-content:space-between;padding:6px 2px;font-size:13px}
.info-row .k{color:var(--text3)}
.info-row .v{font-weight:600;font-family:var(--mono)}

/* Logs */
.log-box{background:#05080F;border:1px solid var(--border);border-radius:10px;padding:12px;font-family:var(--mono);font-size:11px;max-height:280px;overflow:auto;white-space:pre-wrap;color:#7FB3D9;line-height:1.8}
html.light .log-box{background:#F4F7FB;color:#35607F}

/* Service status pills */
.svc-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.svc-pill{display:inline-flex;align-items:center;gap:6px;font-size:11px;font-family:var(--mono);padding:5px 10px;border-radius:6px;border:1px solid var(--border)}
.svc-pill .dot{width:6px;height:6px;border-radius:50%}
.svc-pill.up{color:var(--accent);border-color:rgba(34,197,94,.2);background:rgba(34,197,94,.06)}
.svc-pill.up .dot{background:var(--accent)}
.svc-pill.down{color:var(--err);border-color:rgba(239,68,68,.2);background:rgba(239,68,68,.06)}
.svc-pill.down .dot{background:var(--err)}

/* Guide */
.guide-item{background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius);padding:16px;margin-bottom:12px}
.guide-item .g-title{font-weight:800;font-size:14px;margin-bottom:8px;display:flex;align-items:center;gap:8px}
.guide-item .g-title::before{content:'';width:3px;height:14px;border-radius:2px;background:var(--grad-acc)}
.guide-item .g-body{font-size:13px;color:var(--text2);line-height:1.8}
.guide-item .g-body b{color:var(--text)}
pre{background:#05080F;border:1px solid var(--border);border-radius:10px;padding:14px;font-family:var(--mono);font-size:12px;overflow:auto;color:#7FB3D9;line-height:1.8}
html.light pre{background:#F4F7FB;color:#35607F}

/* Bottom nav v2 — frosted glass dock + pill active (per ui-ux-pro-max/taste/impeccable) */
.bottomnav{position:fixed;bottom:0;left:0;right:0;background:rgba(10,17,28,.78);backdrop-filter:blur(20px) saturate(1.5);-webkit-backdrop-filter:blur(20px) saturate(1.5);border-top:1px solid var(--border2);display:flex;justify-content:space-around;align-items:stretch;padding:6px 10px calc(8px + env(safe-area-inset-bottom));z-index:50}
.bottomnav .item{flex:1;text-align:center;color:var(--text3);font-size:10px;cursor:pointer;padding:3px 2px;transition:color .18s,transform .12s,background .18s;font-family:var(--sans);min-height:52px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;border-radius:14px;position:relative;-webkit-tap-highlight-color:transparent;user-select:none}
.bottomnav .item .ico{font-size:20px;line-height:1;transition:transform .22s cubic-bezier(.34,1.56,.64,1)}
.bottomnav .item:active{transform:scale(.94)}
.bottomnav .item.active{color:var(--accent);background:linear-gradient(180deg,rgba(34,197,94,.16),rgba(34,197,94,.04));box-shadow:inset 0 0 0 1px rgba(34,197,94,.16)}
.bottomnav .item.active .ico{transform:translateY(-1px) scale(1.1);filter:drop-shadow(0 2px 10px rgba(34,197,94,.45))}
.bottomnav .item.active::after{content:'';position:absolute;top:-6px;left:50%;transform:translateX(-50%);width:24px;height:3px;border-radius:0 0 4px 4px;background:var(--grad-acc)}
html.light .bottomnav{background:rgba(247,250,252,.85);border-top-color:rgba(30,58,95,.14)}
html.light .bottomnav .item.active{background:linear-gradient(180deg,rgba(34,197,94,.18),rgba(34,197,94,.05));box-shadow:inset 0 0 0 1px rgba(34,197,94,.25)}

/* Toast */
.toast{position:fixed;left:50%;bottom:80px;transform:translateX(-50%);background:var(--primary);border:1px solid var(--border2);color:#fff;padding:11px 20px;border-radius:10px;font-size:13px;font-weight:600;z-index:99999;animation:toastIn .25s ease;box-shadow:var(--shadow)}
.toast.err{background:#7F1D1D;border-color:rgba(239,68,68,.4)}
@keyframes toastIn{from{opacity:0;transform:translateX(-50%) translateY(12px)}to{opacity:1;transform:translateX(-50%) translateY(0)}}

/* Loading */
.loading{text-align:center;padding:44px;color:var(--text3);font-size:12px;font-family:var(--mono)}
.loading::after{content:'';display:block;width:24px;height:24px;margin:12px auto 0;border:2px solid var(--surface3);border-top-color:var(--info);border-radius:50%;animation:spin .7s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* Chart container */
.chart-box{background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius);padding:14px;margin-bottom:14px}
.chart-box .head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
.chart-box .head .title{font-size:12px;font-weight:700;color:var(--text2);letter-spacing:.5px;display:flex;align-items:center;gap:6px}
.chart-box .head .title::before{content:'';width:3px;height:14px;border-radius:2px;background:var(--grad-acc)}

/* Responsive */
@media(max-width:860px){
  .server-row{grid-template-columns:1fr;gap:12px}
  .server-row .sr-status{flex-direction:row;justify-content:space-between;align-items:center}
  .sr-traffic{text-align:left}
  .kpi-strip{grid-template-columns:1fr 1fr}
}
@media(max-width:520px){
  .server-row .sr-metrics{grid-template-columns:1fr 1fr}
  .node-grid{grid-template-columns:1fr}
  .container{padding:14px 12px 96px}
}