@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=JetBrains+Mono:wght@500;700&display=swap');

/* ============================================================
   SURGE CORE — Design tokens
   Palette is drawn directly from the Surge Core mark: the
   green -> cyan -> blue circuit gradient. Decorative use only —
   text always sits on solid ink or a two-tone blue/cyan button
   fill so contrast never depends on gradient position.
   ============================================================ */
:root{
  --ink-950:#050b16;
  --ink-900:#081527;
  --ink-800:#0d2038;
  --ink-700:#17304f;

  --surge-green:#7ed321;
  --surge-cyan:#17c8ef;
  --surge-blue:#1268d8;
  --surge-gradient:linear-gradient(115deg,var(--surge-green) 0%,var(--surge-cyan) 52%,var(--surge-blue) 100%);
  --btn-gradient:linear-gradient(135deg,var(--surge-cyan),var(--surge-blue));

  --canvas:#f2f6fb;
  --surface:#ffffff;
  --line:#e4eaf3;
  --ink:#152238;
  --muted:#697690;
  --muted-2:#8b96ac;

  --good:#0d9b67;   --good-bg:#e4f8ee;
  --warn:#c47a0a;   --warn-bg:#fdf1de;
  --bad:#d1465a;    --bad-bg:#fdecef;
  --info:#1268d8;   --info-bg:#eaf3fd;

  --radius:14px;
  --radius-sm:9px;
  --shadow:0 10px 28px -14px rgba(9,26,54,.16);
  --shadow-lg:0 24px 60px -20px rgba(4,14,30,.35);

  --font-ui:'Inter',system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:'JetBrains Mono',ui-monospace,"SFMono-Regular",Consolas,monospace;

  font:14px/1.5 var(--font-ui);
  color:var(--ink);
}

*{box-sizing:border-box}
html,body{margin:0}
body{background:var(--canvas);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:inherit}
button,input{font:inherit;color:inherit}
button{
  border:0;border-radius:var(--radius-sm);background:var(--btn-gradient);color:#fff;
  padding:11px 18px;font-weight:700;font-size:13.5px;letter-spacing:.01em;cursor:pointer;
  box-shadow:0 8px 18px -8px rgba(18,104,216,.5);
  transition:filter .15s ease,transform .1s ease,box-shadow .15s ease;
}
button:hover{filter:brightness(1.07)}
button:active{transform:translateY(1px)}
button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid var(--surge-cyan);outline-offset:2px}
.secondary{background:#eef3fb;color:#2c567f;box-shadow:none;padding:8px 12px;font-size:12.5px}
.secondary:hover{background:#e3ecf9;filter:none}

/* ============================================================
   LOGIN — circuit-trace background, no stock imagery
   ============================================================ */
body:has(.login-page){min-height:100vh;margin:0}
.login-page{
  min-height:100vh;position:relative;overflow:hidden;display:grid;place-items:center;padding:24px;
  background:
    radial-gradient(640px 640px at 12% 18%,rgba(126,211,33,.16) 0%,transparent 60%),
    radial-gradient(720px 720px at 88% 24%,rgba(23,200,239,.16) 0%,transparent 58%),
    radial-gradient(820px 820px at 50% 96%,rgba(18,104,216,.22) 0%,transparent 60%),
    linear-gradient(165deg,var(--ink-950) 0%,var(--ink-900) 55%,#071a30 100%);
}
.circuit-grid{position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(90deg,#ffffff0a 1px,transparent 1px),linear-gradient(0deg,#ffffff0a 1px,transparent 1px);
  background-size:54px 54px;
  -webkit-mask-image:radial-gradient(circle at 50% 38%,#000 0%,transparent 72%);
          mask-image:radial-gradient(circle at 50% 38%,#000 0%,transparent 72%);
}
.circuit-node{position:absolute;width:6px;height:6px;border-radius:50%;background:var(--surge-cyan);
  box-shadow:0 0 0 3px rgba(23,200,239,.15),0 0 14px 2px rgba(23,200,239,.55);
  animation:node-pulse 3.6s ease-in-out infinite;
}
.circuit-node.n-green{background:var(--surge-green);box-shadow:0 0 0 3px rgba(126,211,33,.15),0 0 14px 2px rgba(126,211,33,.5)}
.circuit-node.n-blue{background:var(--surge-blue);box-shadow:0 0 0 3px rgba(18,104,216,.18),0 0 14px 2px rgba(18,104,216,.55)}
@keyframes node-pulse{0%,100%{opacity:.45;transform:scale(1)}50%{opacity:1;transform:scale(1.5)}}
@media(prefers-reduced-motion:reduce){.circuit-node{animation:none;opacity:.8}}

.login{
  position:relative;z-index:1;width:min(430px,100%);padding:46px 40px 38px;
  background:#fffffff5;border:1px solid #ffffffb0;border-radius:20px;
  box-shadow:var(--shadow-lg);text-align:center;backdrop-filter:blur(10px);
  overflow:hidden;
}
.login::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:var(--surge-gradient)}
.login-logo{display:block;width:min(260px,100%);height:auto;margin:6px auto 26px}
.login p.lead{margin:0 0 28px;color:#45577a;font-size:14.5px}
.login form{display:grid;gap:12px}
.login input{width:100%;padding:13px 14px;border:1px solid #d8e1ee;border-radius:10px;background:#fff;color:var(--ink);outline:none;font-size:14px}
.login input:focus{border-color:var(--surge-cyan);box-shadow:0 0 0 3px rgba(23,200,239,.16)}
.login button{width:100%;margin-top:6px;padding:13px}
.login .foot{margin:22px 0 0;color:var(--muted-2);font-size:11.5px;letter-spacing:.04em;text-transform:uppercase;font-weight:700}
output{display:block;color:#cf3150;font-size:13px;margin-top:4px}

/* ============================================================
   APP SHELL
   ============================================================ */
.app-shell{min-height:100vh;display:grid;grid-template-columns:236px 1fr}
.sidebar{
  padding:24px 14px;background:linear-gradient(180deg,var(--ink-950),var(--ink-900) 55%,var(--ink-800));
  display:flex;flex-direction:column;position:relative;
}
.side-brand{display:flex;align-items:center;gap:11px;margin:2px 6px 30px}
.side-logo{width:40px;height:40px;object-fit:contain;flex:none}
.side-brand .name{color:#fff;font-weight:800;font-size:14.5px;letter-spacing:.01em;line-height:1.15}
.side-brand .tag{display:block;color:#7d8db0;font-size:10px;letter-spacing:.13em;font-weight:700;text-transform:uppercase;margin-top:2px}

.side-nav{position:relative;display:flex;flex-direction:column;gap:1px;padding-left:4px;margin-bottom:auto}
.side-nav::before{content:'';position:absolute;left:19px;top:10px;bottom:10px;width:2px;background:linear-gradient(180deg,#ffffff26,#ffffff08)}
.side-nav a{
  position:relative;display:flex;align-items:center;gap:11px;padding:11px 12px 11px 34px;
  color:#a9b7d1;text-decoration:none;border-radius:9px;font-weight:600;font-size:13px;
  transition:background .15s ease,color .15s ease;
}
.side-nav a svg{width:16px;height:16px;flex:none;opacity:.9}
.side-nav a::before{
  content:'';position:absolute;left:15px;top:50%;transform:translateY(-50%);
  width:9px;height:9px;border-radius:50%;background:var(--ink-800);border:2px solid #3a4d70;
  transition:all .2s ease;z-index:1;
}
.side-nav a:hover{color:#fff;background:#ffffff0f}
.side-nav a.active{color:#fff;background:#ffffff16}
.side-nav a.active::before{background:var(--surge-gradient);border-color:transparent;box-shadow:0 0 0 4px rgba(23,200,239,.18),0 0 12px rgba(23,200,239,.7)}

.side-foot{border-top:1px solid #ffffff1a;margin-top:18px;padding-top:14px}
.logout{
  width:100%;display:flex;align-items:center;justify-content:center;gap:8px;
  background:#ffffff0f;color:#e7ecf6;border:1px solid #ffffff26;box-shadow:none;padding:11px;
}
.logout:hover{background:#ffffff1c;filter:none}
.logout svg{width:15px;height:15px}

.dashboard{padding:30px 34px 60px;max-width:1560px;width:100%;margin:auto}

/* ============================================================
   HEADER
   ============================================================ */
.dashboard-head{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;padding-bottom:20px;margin-bottom:26px;border-bottom:1px solid var(--line);position:relative}
.dashboard-head::after{content:'';position:absolute;left:0;bottom:-1px;height:2px;width:110px;background:var(--surge-gradient)}
.eyebrow{font-size:11px;font-weight:800;letter-spacing:.16em;color:var(--surge-blue)}
h1{margin:6px 0 0;font-size:26px;font-weight:800;letter-spacing:-.01em}
.head-meta{display:flex;align-items:center;gap:10px}
.live-pill{display:inline-flex;align-items:center;gap:8px;color:var(--good);background:var(--good-bg);padding:8px 13px;border-radius:99px;font-weight:700;font-size:12px;white-space:nowrap}
.live-pill i{width:7px;height:7px;border-radius:50%;background:#1ec981;box-shadow:0 0 0 0 rgba(30,201,129,.5);animation:pulse-dot 2s infinite}
.gateway-pill{display:inline-flex;align-items:center;gap:7px;color:var(--surge-blue);background:var(--info-bg);padding:8px 13px;border-radius:99px;font-weight:700;font-size:12px;white-space:nowrap}
@keyframes pulse-dot{0%{box-shadow:0 0 0 0 rgba(30,201,129,.55)}70%{box-shadow:0 0 0 8px rgba(30,201,129,0)}100%{box-shadow:0 0 0 0 rgba(30,201,129,0)}}
@media(prefers-reduced-motion:reduce){.live-pill i{animation:none}}

/* ============================================================
   METRIC CARDS
   ============================================================ */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.metric-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:19px 20px;display:flex;align-items:center;gap:16px;
}
.ring{
  --pct:0;--ring-c:var(--surge-blue);
  width:56px;height:56px;border-radius:50%;flex:none;display:grid;place-items:center;position:relative;
  background:conic-gradient(var(--ring-c) calc(var(--pct)*1%),#eef2f8 0);
}
.ring::after{content:'';position:absolute;inset:5px;border-radius:50%;background:var(--surface)}
.ring span{position:relative;font-family:var(--font-mono);font-size:11px;font-weight:700;color:var(--ink)}
.icon-badge{width:56px;height:56px;border-radius:50%;flex:none;display:grid;place-items:center;background:linear-gradient(135deg,var(--surge-cyan),var(--surge-blue));color:#fff}
.icon-badge svg{width:23px;height:23px}
.icon-badge.warn{background:linear-gradient(135deg,#f2b73c,var(--bad))}
.metric-body small{display:block;color:var(--muted);font-weight:800;font-size:10.5px;letter-spacing:.08em}
.metric-body b{display:block;font-family:var(--font-mono);font-size:25px;margin:8px 0 3px;letter-spacing:-.02em}
.metric-body span{color:var(--muted);font-size:11.5px}
.good{color:var(--good)}
.warning{color:var(--warn)}
.bad{color:var(--bad)}

/* ============================================================
   PANELS
   ============================================================ */
.two-col{display:grid;grid-template-columns:1.25fr .75fr;gap:15px;margin-top:16px}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:19px 20px;margin-top:16px}
.two-col .panel{margin-top:0}
.panel-title{font-size:11.5px;letter-spacing:.07em;font-weight:800;color:#51617b;text-transform:uppercase;display:flex;justify-content:space-between;align-items:center;gap:10px}
.panel-title small{color:var(--muted);font-weight:600;text-transform:none;letter-spacing:0}

.bars{height:180px;border-bottom:1px solid var(--line);display:flex;gap:7px;align-items:end;margin:18px 0 8px;
  background:repeating-linear-gradient(0deg,transparent 0 44px,#eef3f8 45px)}
.bars i{position:relative;flex:1;min-width:6px;background:linear-gradient(180deg,var(--surge-cyan),var(--surge-blue));border-radius:4px 4px 0 0;transition:filter .15s ease}
.bars i:hover{filter:brightness(1.15)}
.bars i.has-err::after{content:'';position:absolute;top:-7px;left:50%;transform:translateX(-50%);width:6px;height:6px;border-radius:50%;background:var(--bad);box-shadow:0 0 0 2px #fff}
.chart-caption{display:flex;justify-content:space-between;color:var(--muted-2);font-size:11.5px;font-family:var(--font-mono)}

.health-row{display:flex;justify-content:space-between;margin:22px 0 8px;font-size:13px}
.progress{height:8px;background:#eef2f7;border-radius:99px;overflow:hidden}
.progress i{display:block;height:100%;background:linear-gradient(90deg,var(--surge-green),var(--good));border-radius:inherit}
.progress.danger i{background:linear-gradient(90deg,#f0b23a,var(--bad))}
.muted{color:var(--muted);font-size:12px;margin-top:20px}

/* ============================================================
   TABLES
   ============================================================ */
.scroll{overflow:auto;margin-top:12px;border-radius:10px}
table{width:100%;border-collapse:collapse;min-width:720px}
thead th{position:sticky;top:0;background:#f7f9fd;z-index:1}
th{text-align:left;color:#6f7c92;font-size:10.5px;letter-spacing:.06em;font-weight:800;text-transform:uppercase}
th,td{padding:12px 13px;border-bottom:1px solid var(--line)}
tbody tr{transition:background .12s ease}
tbody tr:hover{background:#f8fafd}
td{color:#3a4962;font-size:13px}
code{font-family:var(--font-mono);color:#1a5aa8;font-size:12px;background:#f0f6fc;padding:2px 6px;border-radius:5px}
.badge{display:inline-flex;align-items:center;gap:5px;font-size:11.5px;font-weight:700;padding:4px 9px;border-radius:99px}
.badge::before{content:'';width:6px;height:6px;border-radius:50%}
.ok{background:var(--good-bg);color:var(--good)}
.ok::before{background:var(--good)}
.off{background:var(--bad-bg);color:var(--bad)}
.off::before{background:var(--bad)}
.empty{text-align:center;color:var(--muted-2);padding:34px 20px;font-size:13px}

/* ============================================================
   FORMS
   ============================================================ */
.inline-form{display:grid;grid-template-columns:1fr 1fr 1.3fr 1.2fr auto;gap:9px;align-items:start;margin-top:16px}
.inline-form input{width:100%;padding:11px 12px;border:1px solid #dce5f0;border-radius:8px;background:#fbfcfe;font-size:13px}
.inline-form input:focus{border-color:var(--surge-cyan);outline:none;box-shadow:0 0 0 3px rgba(23,200,239,.14);background:#fff}
.inline-form output{grid-column:1/-1}
.form-note{color:var(--muted);font-size:12px;margin:14px 0 0}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media(max-width:950px){
  .app-shell{grid-template-columns:1fr}
  .sidebar{flex-direction:row;align-items:center;overflow:auto;padding:12px 14px;gap:14px}
  .side-brand{margin:0}
  .side-nav{flex-direction:row;margin:0}
  .side-nav::before{display:none}
  .side-nav a{padding:9px 12px;white-space:nowrap}
  .side-nav a::before{display:none}
  .side-foot{border-top:0;margin:0 0 0 auto;padding:0}
  .logout{width:auto;padding:9px 14px}
  .dashboard{padding:20px}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .two-col{grid-template-columns:1fr}
  .inline-form{grid-template-columns:1fr 1fr}
}
@media(max-width:560px){
  .dashboard-head{display:block}
  .head-meta{margin-top:10px}
  .metrics{grid-template-columns:1fr}
  .inline-form{grid-template-columns:1fr}
  .login{padding:36px 24px}
}