:root{
  /* ---- dark (default) ---- */
  --bg:#0c111e; --bg-grad:#0e1424;
  --panel:#161d2e; --panel2:#1c2540;
  --line:#28324e; --line2:#323f61;
  --text:#e8edf7; --muted:#8b98b6;
  --accent:#5b93ff; --accent-ink:#fff; --accent2:#35d07f;
  --green:#35d07f; --red:#ff5c6c; --amber:#ffb13d;
  --sidebar:#0f1524; --sidebar-line:#222c44;
  --hero1:#20305c; --hero2:#141b2c; --hero-ink:#eaf1ff;
  --shadow:0 1px 2px rgba(0,0,0,.28), 0 2px 10px rgba(0,0,0,.22);
  --shadow-lg:0 12px 34px rgba(0,0,0,.42);
  --ring:rgba(91,147,255,.35);
  --radius:16px; color-scheme:dark;
}
:root[data-theme="light"]{
  --bg:#eef1f8; --bg-grad:#e8ecf6;
  --panel:#ffffff; --panel2:#f3f6fc;
  --line:#e2e7f1; --line2:#d3dae8;
  --text:#182238; --muted:#5d6a85;
  --accent:#2f6fed; --accent-ink:#fff; --accent2:#12a565;
  --green:#12a565; --red:#e5484d; --amber:#d97a00;
  --sidebar:#ffffff; --sidebar-line:#e6eaf3;
  --hero1:#dfeaff; --hero2:#f4f8ff; --hero-ink:#16346e;
  --shadow:0 1px 2px rgba(30,45,80,.06), 0 4px 14px rgba(30,45,80,.07);
  --shadow-lg:0 14px 40px rgba(30,45,80,.15);
  --ring:rgba(47,111,237,.28);
  color-scheme:light;
}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{font-family:"Segoe UI",system-ui,-apple-system,sans-serif;color:var(--text);
  background:linear-gradient(180deg,var(--bg-grad),var(--bg)) fixed;
  -webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
body,.sidebar,.card,.topbar,input,select,textarea,.pill,.btn,.tab,.controls button{
  transition:background-color .22s ease,color .22s ease,border-color .22s ease,box-shadow .22s ease}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-thumb{background:var(--line2);border-radius:8px;border:2px solid transparent;background-clip:content-box}

/* ---- app shell ---- */
.app{display:flex;min-height:100vh}
.sidebar{width:236px;flex-shrink:0;background:var(--sidebar);border-right:1px solid var(--sidebar-line);
  display:flex;flex-direction:column;position:sticky;top:0;height:100vh}
.brand{display:flex;align-items:center;gap:10px;padding:18px 16px 14px}
.brand-mark{font-size:20px}
.brand-logo{max-height:34px;max-width:140px;border-radius:7px;display:block}
.brand-name{font-size:17px;font-weight:800;white-space:nowrap;letter-spacing:-.2px;
  background:linear-gradient(90deg,var(--accent),var(--accent2));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.collapse-btn{margin-left:auto;background:transparent;border:0;color:var(--muted);font-size:16px;cursor:pointer;padding:4px 7px;border-radius:7px;line-height:1}
.collapse-btn:hover{background:var(--panel2);color:var(--text)}
.sidebar nav{display:flex;flex-direction:column;gap:3px;padding:8px 12px;flex:1;overflow:auto}
.sidebar nav a{position:relative;display:flex;align-items:center;gap:12px;padding:10px 13px;border-radius:11px;
  color:var(--muted);font-size:14.5px;font-weight:500}
.sidebar nav a:hover{background:var(--panel2);color:var(--text)}
.sidebar nav a.active{background:var(--accent);color:var(--accent-ink);box-shadow:0 6px 16px var(--ring)}
.sidebar nav a.active .ic{filter:none}
.sidebar nav a .ic{width:20px;text-align:center;font-size:15px}
.navgroup{color:var(--muted);opacity:.7;font-size:10.5px;font-weight:700;letter-spacing:1.6px;padding:16px 15px 6px}
.userbox{border-top:1px solid var(--sidebar-line);padding:14px 18px}
.userbox .uname{font-weight:600;font-size:14px}
.userbox .urole{color:var(--muted);font-size:12px;text-transform:capitalize;margin-bottom:8px}
.userbox .logout{color:var(--red);font-size:13px;font-weight:600}

.main{flex:1;min-width:0;display:flex;flex-direction:column}
.topbar{display:flex;align-items:center;gap:14px;padding:16px 26px;border-bottom:1px solid var(--line);
  background:var(--panel);background:color-mix(in srgb,var(--panel) 78%, transparent);backdrop-filter:blur(8px);position:sticky;top:0;z-index:20}
.topbar h1{margin:0;font-size:20px;font-weight:700;letter-spacing:-.3px}
.content{padding:24px 26px;max-width:1320px;width:100%}
.themebtn{margin-left:auto;background:var(--panel2);border:1px solid var(--line);color:var(--text);
  width:40px;height:40px;border-radius:11px;font-size:17px;cursor:pointer;display:inline-flex;align-items:center;justify-content:center}
.themebtn:hover{border-color:var(--accent);box-shadow:0 0 0 3px var(--ring)}

/* ---- cards / grid ---- */
.grid{display:grid;gap:16px}
.g-2{grid-template-columns:2fr 1fr}
.g-3{grid-template-columns:repeat(3,1fr)}
.g-auto{grid-template-columns:repeat(auto-fit,minmax(210px,1fr))}
@media(max-width:900px){.g-2,.g-3{grid-template-columns:1fr}}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px;box-shadow:var(--shadow)}
a.card{display:block}
a.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:var(--line2)}
.card h2,.card h3{margin:0 0 14px;font-size:15px;font-weight:700;letter-spacing:-.2px}
.card .label{color:var(--muted);font-size:12px;letter-spacing:.5px;text-transform:uppercase;font-weight:600}
.card .value{font-size:32px;font-weight:800;margin-top:6px;letter-spacing:-.6px;font-variant-numeric:tabular-nums}
.card .value small{font-size:14px;color:var(--muted);font-weight:600;margin-left:5px;letter-spacing:0}
.hero{background:linear-gradient(140deg,var(--hero1),var(--hero2));border-color:transparent;color:var(--hero-ink)}
.hero .label{color:var(--hero-ink);opacity:.75}
.hero .value{font-size:42px;background:linear-gradient(90deg,var(--accent),var(--accent2));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.section-title{margin:28px 0 12px;font-size:11.5px;color:var(--muted);letter-spacing:1.6px;text-transform:uppercase;font-weight:700}

/* ---- status ---- */
.dot{display:inline-block;width:9px;height:9px;border-radius:50%;background:var(--muted);margin-right:6px}
.dot.on{background:var(--green);box-shadow:0 0 0 3px color-mix(in srgb,var(--green) 25%, transparent)}
.dot.off{background:var(--red);box-shadow:0 0 0 3px color-mix(in srgb,var(--red) 25%, transparent)}
.pill{display:inline-flex;align-items:center;gap:6px;background:var(--panel2);border:1px solid var(--line);
  border-radius:20px;padding:6px 13px;font-size:13px;font-weight:500}

/* ---- tables ---- */
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left}
th{color:var(--muted);font-weight:700;font-size:12px;text-transform:uppercase;letter-spacing:.3px}
tbody tr:hover{background:var(--panel2)}
td.num,th.num{text-align:right;font-variant-numeric:tabular-nums}
.raw{font-family:ui-monospace,Consolas,monospace;color:var(--muted);font-size:11px}
tr.flash-row{animation:fl 1.2s ease-out}
@keyframes fl{from{background:color-mix(in srgb,var(--accent) 22%, transparent)}to{background:transparent}}

/* ---- buttons / forms ---- */
.btn{display:inline-block;background:var(--accent);color:var(--accent-ink);border:0;border-radius:10px;
  padding:10px 17px;font-size:14px;font-weight:600;cursor:pointer;box-shadow:0 4px 12px var(--ring)}
.btn:hover{filter:brightness(1.06);transform:translateY(-1px)}
.btn.sec{background:var(--panel2);color:var(--text);border:1px solid var(--line);box-shadow:none}
.btn.danger{background:var(--red);box-shadow:none}
.btn.sm{padding:7px 12px;font-size:13px}
.controls{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin-bottom:16px}
.controls button,.tab{background:var(--panel2);color:var(--text);border:1px solid var(--line);
  padding:8px 15px;border-radius:10px;cursor:pointer;font-size:14px;font-weight:500}
.tab:hover{border-color:var(--line2)}
.tab.active{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
label{display:block;font-size:13px;color:var(--muted);margin:12px 0 5px;font-weight:500}
input,select,textarea{width:100%;padding:10px 12px;background:var(--bg);border:1px solid var(--line);
  border-radius:10px;color:var(--text);font-size:14px;font-family:inherit}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--ring)}
.row{display:flex;gap:14px;flex-wrap:wrap}.row>div{flex:1;min-width:160px}
.flash{background:var(--panel2);background:color-mix(in srgb,var(--green) 14%, var(--panel));border:1px solid var(--green);color:var(--green);padding:11px 15px;border-radius:11px;margin-bottom:16px;font-size:14px;font-weight:500}
.err{background:var(--panel2);background:color-mix(in srgb,var(--red) 12%, var(--panel));border:1px solid var(--red);color:var(--red);padding:11px 15px;border-radius:11px;margin-bottom:16px;font-size:14px;font-weight:500}
.muted{color:var(--muted)}
canvas{width:100%!important}
.actions{display:flex;gap:6px}

/* login */
.login-wrap{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:20px;position:relative}
.login-card{width:100%;max-width:370px;background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:34px 30px;box-shadow:var(--shadow-lg)}
.login-card h1{font-size:21px;margin:0 0 4px;letter-spacing:-.3px}
.login-card p{color:var(--muted);margin:0 0 18px;font-size:14px}
.login-logo{max-height:60px;max-width:210px;display:block;margin:0 auto 16px}

/* ---- collapsible + mobile sidebar ---- */
.sidebar nav a .lbl{white-space:nowrap}
.navbtn{display:none;background:var(--panel2);border:1px solid var(--line);color:var(--text);width:40px;height:40px;border-radius:11px;font-size:18px;cursor:pointer;flex-shrink:0}
.navbtn:hover{border-color:var(--accent)}
.backdrop{display:none}
.app.collapsed .sidebar{width:68px}
.app.collapsed .brand{justify-content:center;padding-left:0;padding-right:0}
.app.collapsed .brand-name,.app.collapsed .lbl,.app.collapsed .navgroup,
.app.collapsed .userbox .uname,.app.collapsed .userbox .urole{display:none}
.app.collapsed .brand-logo{max-width:40px}
.app.collapsed .collapse-btn{margin-left:0;transform:rotate(180deg)}
.app.collapsed .sidebar nav a{justify-content:center;padding:11px 0}
.app.collapsed .userbox{text-align:center;padding:12px 6px}
.app.collapsed .userbox .logout{font-size:0}
.app.collapsed .userbox .logout::before{content:"⎋";font-size:16px}
@media(max-width:768px){
  .navbtn{display:inline-flex;align-items:center;justify-content:center}
  .collapse-btn{display:none}
  .sidebar{position:fixed;top:0;left:0;height:100vh;transform:translateX(-100%);
    transition:transform .25s ease;z-index:60;box-shadow:2px 0 30px rgba(0,0,0,.4)}
  .app.nav-open .sidebar{transform:translateX(0)}
  .app.collapsed .sidebar{width:236px}
  .app.collapsed .brand-name,.app.collapsed .navgroup,
  .app.collapsed .userbox .uname,.app.collapsed .userbox .urole{display:block}
  .app.collapsed .lbl{display:inline}
  .app.collapsed .sidebar nav a{justify-content:flex-start;padding:10px 13px}
  .app.collapsed .userbox .logout{font-size:13px}
  .app.collapsed .userbox .logout::before{content:""}
  .backdrop{position:fixed;inset:0;background:rgba(0,0,0,.55);z-index:55}
  .app.nav-open .backdrop{display:block}
  .content{padding:16px 14px}
  .topbar{padding:13px 16px}
  .topbar h1{font-size:17px}
  .card{padding:16px}
  table{font-size:13px}
  th,td{padding:8px}
}
@media(min-width:769px){ .navbtn{display:none} }