:root,
[data-theme="daylight"] {
  --bg: #f4f7fb;
  --bg-accent: #e8eef6;
  --panel: #ffffff;
  --panel-2: #f0f4fa;
  --line: #d5dee8;
  --text: #1a2744;
  --muted: #5a6b84;
  --accent: #0d9488;
  --accent-2: #e11d48;
  --ok: #0f766e;
  --warn: #d97706;
  --bad: #dc2626;
  --link: #3730a3;
  --topbar: rgba(255, 255, 255, 0.94);
  --input-bg: #ffffff;
  --th-bg: #eef2f8;
  --code-bg: #eef3f8;
  --shadow: 0 8px 24px rgba(26, 39, 68, 0.06);
  --tile-teal: linear-gradient(160deg, #d7f4ef 0%, #ffffff 70%);
  --tile-coral: linear-gradient(160deg, #ffe4e0 0%, #ffffff 70%);
  --tile-amber: linear-gradient(160deg, #fff3d6 0%, #ffffff 70%);
  --tile-indigo: linear-gradient(160deg, #e4e8ff 0%, #ffffff 70%);
  --tile-border-teal: #99e2d6;
  --tile-border-coral: #f5b8ae;
  --tile-border-amber: #f0d089;
  --tile-border-indigo: #b4baf5;
  --badge-ok-bg: rgba(15, 118, 110, 0.12);
  --badge-ok-fg: #0f766e;
  --badge-warn-bg: rgba(217, 119, 6, 0.14);
  --badge-warn-fg: #b45309;
  --badge-bad-bg: rgba(220, 38, 38, 0.12);
  --badge-bad-fg: #b91c1c;
  --flash-ok-bg: rgba(15, 118, 110, 0.12);
  --flash-ok-fg: #115e59;
  --flash-bad-bg: rgba(220, 38, 38, 0.12);
  --flash-bad-fg: #991b1b;
  --btn-secondary: #334155;
  --chart-1: #0d9488;
  --chart-2: #d97706;
  --chart-3: #dc2626;
  --chart-4: #4f46e5;
}

[data-theme="ocean"] {
  --bg: #e8f4f8;
  --bg-accent: #d4eaf2;
  --panel: #f7fcfe;
  --panel-2: #e3f2f7;
  --line: #b7d4e0;
  --text: #0c4a6e;
  --muted: #3d6f86;
  --accent: #0891b2;
  --accent-2: #0e7490;
  --ok: #0f766e;
  --warn: #ca8a04;
  --bad: #e11d48;
  --link: #0369a1;
  --topbar: rgba(247, 252, 254, 0.94);
  --input-bg: #ffffff;
  --th-bg: #dceef5;
  --code-bg: #dceef5;
  --shadow: 0 8px 24px rgba(12, 74, 110, 0.08);
  --tile-teal: linear-gradient(160deg, #c5f0ea 0%, #f7fcfe 70%);
  --tile-coral: linear-gradient(160deg, #cce8f5 0%, #f7fcfe 70%);
  --tile-amber: linear-gradient(160deg, #d4f1f8 0%, #f7fcfe 70%);
  --tile-indigo: linear-gradient(160deg, #c9d8f5 0%, #f7fcfe 70%);
  --tile-border-teal: #7dd3c7;
  --tile-border-coral: #7eb8d4;
  --tile-border-amber: #7ec8db;
  --tile-border-indigo: #8aa4e0;
  --badge-ok-bg: rgba(8, 145, 178, 0.14);
  --badge-ok-fg: #0e7490;
  --badge-warn-bg: rgba(202, 138, 4, 0.16);
  --badge-warn-fg: #a16207;
  --badge-bad-bg: rgba(225, 29, 72, 0.12);
  --badge-bad-fg: #be123c;
  --flash-ok-bg: rgba(8, 145, 178, 0.12);
  --flash-ok-fg: #155e75;
  --flash-bad-bg: rgba(225, 29, 72, 0.12);
  --flash-bad-fg: #9f1239;
  --btn-secondary: #164e63;
  --chart-1: #0891b2;
  --chart-2: #0f766e;
  --chart-3: #e11d48;
  --chart-4: #2563eb;
}

[data-theme="sunrise"] {
  --bg: #fff8f0;
  --bg-accent: #ffefd6;
  --panel: #fffdf8;
  --panel-2: #fff4e5;
  --line: #edd5b3;
  --text: #7c2d12;
  --muted: #9a5b3a;
  --accent: #ea580c;
  --accent-2: #d97706;
  --ok: #65a30d;
  --warn: #ca8a04;
  --bad: #dc2626;
  --link: #c2410c;
  --topbar: rgba(255, 253, 248, 0.95);
  --input-bg: #ffffff;
  --th-bg: #fff1de;
  --code-bg: #fff1de;
  --shadow: 0 8px 24px rgba(124, 45, 18, 0.07);
  --tile-teal: linear-gradient(160deg, #ffe0c8 0%, #fffdf8 70%);
  --tile-coral: linear-gradient(160deg, #ffd4cc 0%, #fffdf8 70%);
  --tile-amber: linear-gradient(160deg, #ffe9b5 0%, #fffdf8 70%);
  --tile-indigo: linear-gradient(160deg, #f5d9c0 0%, #fffdf8 70%);
  --tile-border-teal: #f0b48a;
  --tile-border-coral: #f0a29a;
  --tile-border-amber: #e8c56a;
  --tile-border-indigo: #e0b48c;
  --badge-ok-bg: rgba(101, 163, 13, 0.14);
  --badge-ok-fg: #4d7c0f;
  --badge-warn-bg: rgba(202, 138, 4, 0.16);
  --badge-warn-fg: #a16207;
  --badge-bad-bg: rgba(220, 38, 38, 0.12);
  --badge-bad-fg: #b91c1c;
  --flash-ok-bg: rgba(101, 163, 13, 0.14);
  --flash-ok-fg: #3f6212;
  --flash-bad-bg: rgba(220, 38, 38, 0.12);
  --flash-bad-fg: #991b1b;
  --btn-secondary: #9a3412;
  --chart-1: #ea580c;
  --chart-2: #d97706;
  --chart-3: #dc2626;
  --chart-4: #65a30d;
}

[data-theme="forest"] {
  --bg: #eef4ee;
  --bg-accent: #dce8dc;
  --panel: #f7faf6;
  --panel-2: #e6efe4;
  --line: #c3d4c1;
  --text: #14532d;
  --muted: #3f6b4c;
  --accent: #3f6212;
  --accent-2: #166534;
  --ok: #15803d;
  --warn: #ca8a04;
  --bad: #b91c1c;
  --link: #166534;
  --topbar: rgba(247, 250, 246, 0.95);
  --input-bg: #ffffff;
  --th-bg: #e2eee0;
  --code-bg: #e2eee0;
  --shadow: 0 8px 24px rgba(20, 83, 45, 0.07);
  --tile-teal: linear-gradient(160deg, #d4edd8 0%, #f7faf6 70%);
  --tile-coral: linear-gradient(160deg, #e4efd4 0%, #f7faf6 70%);
  --tile-amber: linear-gradient(160deg, #e8f0c8 0%, #f7faf6 70%);
  --tile-indigo: linear-gradient(160deg, #d5e6d8 0%, #f7faf6 70%);
  --tile-border-teal: #8fc49a;
  --tile-border-coral: #b4c88a;
  --tile-border-amber: #c4d46a;
  --tile-border-indigo: #8cb89a;
  --badge-ok-bg: rgba(21, 128, 61, 0.14);
  --badge-ok-fg: #166534;
  --badge-warn-bg: rgba(202, 138, 4, 0.16);
  --badge-warn-fg: #a16207;
  --badge-bad-bg: rgba(185, 28, 28, 0.12);
  --badge-bad-fg: #991b1b;
  --flash-ok-bg: rgba(21, 128, 61, 0.12);
  --flash-ok-fg: #14532d;
  --flash-bad-bg: rgba(185, 28, 28, 0.12);
  --flash-bad-fg: #7f1d1d;
  --btn-secondary: #14532d;
  --chart-1: #15803d;
  --chart-2: #65a30d;
  --chart-3: #b91c1c;
  --chart-4: #3f6212;
}

[data-theme="midnight"] {
  --bg: #1b2433;
  --bg-accent: #243044;
  --panel: #243044;
  --panel-2: #2c3a52;
  --line: #3a4a63;
  --text: #e8eef7;
  --muted: #93a4bd;
  --accent: #38bdf8;
  --accent-2: #f472b6;
  --ok: #34d399;
  --warn: #fbbf24;
  --bad: #fb7185;
  --link: #7dd3fc;
  --topbar: rgba(27, 36, 51, 0.94);
  --input-bg: #1b2433;
  --th-bg: #1b2433;
  --code-bg: #151c28;
  --shadow: 0 10px 28px rgba(0, 0, 0, 0.28);
  --tile-teal: linear-gradient(160deg, #164e63 0%, #243044 75%);
  --tile-coral: linear-gradient(160deg, #6b2d4a 0%, #243044 75%);
  --tile-amber: linear-gradient(160deg, #6b4f1a 0%, #243044 75%);
  --tile-indigo: linear-gradient(160deg, #312e81 0%, #243044 75%);
  --tile-border-teal: #22d3ee;
  --tile-border-coral: #f472b6;
  --tile-border-amber: #fbbf24;
  --tile-border-indigo: #818cf8;
  --badge-ok-bg: rgba(52, 211, 153, 0.16);
  --badge-ok-fg: #6ee7b7;
  --badge-warn-bg: rgba(251, 191, 36, 0.16);
  --badge-warn-fg: #fcd34d;
  --badge-bad-bg: rgba(251, 113, 133, 0.16);
  --badge-bad-fg: #fda4af;
  --flash-ok-bg: rgba(52, 211, 153, 0.14);
  --flash-ok-fg: #a7f3d0;
  --flash-bad-bg: rgba(251, 113, 133, 0.14);
  --flash-bad-fg: #fecdd3;
  --btn-secondary: #3a4a63;
  --chart-1: #38bdf8;
  --chart-2: #fbbf24;
  --chart-3: #fb7185;
  --chart-4: #818cf8;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", system-ui, sans-serif;
  background: radial-gradient(1200px 600px at 10% -10%, var(--bg-accent) 0%, var(--bg) 55%);
  color: var(--text);
  min-height: 100vh;
}
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
.topbar {
  display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between;
  padding: 12px 20px; background: var(--topbar); border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 10; backdrop-filter: blur(8px);
}
.brand strong { font-size: 1.05rem; margin-right: 8px; }
.topbar nav { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.topbar nav a { color: var(--text); font-weight: 600; font-size: .92rem; }
.topbar .logout { color: var(--muted); font-weight: 500; }
.theme-switcher { display: flex; align-items: center; gap: 6px; }
.theme-switcher label { font-size: .78rem; color: var(--muted); font-weight: 600; }
.theme-switcher select {
  background: var(--input-bg); color: var(--text); border: 1px solid var(--line);
  border-radius: 8px; padding: 4px 8px; font-size: .82rem;
}
.nav-dropdown { position: relative; display: inline-block; padding: 4px 0; }
.nav-dropbtn {
  background: none; border: none; font-family: inherit; font-size: .92rem;
  font-weight: 600; color: var(--text); cursor: pointer; padding: 0; margin: 0;
}
.nav-dropdown-content {
  display: none; position: absolute; top: 100%; left: 0;
  background-color: var(--panel); min-width: 160px;
  box-shadow: 0px 8px 24px rgba(0,0,0,0.15); z-index: 100;
  border-radius: 8px; border: 1px solid var(--line); overflow: hidden; padding: 4px 0;
}
.nav-dropdown-content a {
  color: var(--text) !important; padding: 8px 16px; text-decoration: none;
  display: block; font-size: .88rem; font-weight: 500 !important;
}
.nav-dropdown-content a:hover { background-color: var(--bg-accent); text-decoration: none; }
.nav-dropdown:hover .nav-dropdown-content { display: block; }
.wrap { max-width: 1200px; margin: 0 auto; padding: 20px; }
.footer { text-align: center; color: var(--muted); font-size: .8rem; padding: 24px 12px 40px; }
.muted { color: var(--muted); }
h1 { font-size: 1.45rem; margin: 0 0 16px; }
h2 { font-size: 1.1rem; margin: 24px 0 10px; }
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 12px;
}
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px 16px;
  box-shadow: var(--shadow);
}
.card h3 { margin: 0 0 6px; font-size: 1rem; }
.stat { font-size: 1.35rem; font-weight: 700; }
.stat small { font-size: .75rem; color: var(--muted); font-weight: 500; }
.tile-teal { background: var(--tile-teal); border-color: var(--tile-border-teal); }
.tile-coral { background: var(--tile-coral); border-color: var(--tile-border-coral); }
.tile-amber { background: var(--tile-amber); border-color: var(--tile-border-amber); }
.tile-indigo { background: var(--tile-indigo); border-color: var(--tile-border-indigo); }
.badge {
  display: inline-block; padding: 2px 8px; border-radius: 999px;
  font-size: .75rem; font-weight: 700; text-transform: uppercase;
}
.badge.online { background: var(--badge-ok-bg); color: var(--badge-ok-fg); }
.badge.stale { background: var(--badge-warn-bg); color: var(--badge-warn-fg); }
.badge.offline { background: var(--badge-bad-bg); color: var(--badge-bad-fg); }
table {
  width: 100%; border-collapse: collapse; font-size: .88rem;
  background: var(--panel); border: 1px solid var(--line); border-radius: 10px; overflow: hidden;
}
th, td { padding: 8px 10px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { background: var(--th-bg); color: var(--muted); font-weight: 600; }
tr:last-child td { border-bottom: none; }
.btn, button, input[type=submit] {
  background: var(--accent); color: #fff; border: none; border-radius: 8px;
  padding: 8px 14px; font-weight: 600; cursor: pointer; font-size: .9rem;
}
.btn.secondary, button.secondary { background: var(--btn-secondary); color: #fff; }
.btn.danger { background: var(--bad); }
.form-row { margin-bottom: 12px; }
.form-row label { display: block; font-size: .85rem; color: var(--muted); margin-bottom: 4px; }
.form-row input, .form-row textarea, .form-row select {
  width: 100%; max-width: 480px; padding: 8px 10px; border-radius: 8px;
  border: 1px solid var(--line); background: var(--input-bg); color: var(--text);
}
.login-box {
  max-width: 380px; margin: 10vh auto; background: var(--panel);
  border: 1px solid var(--line); border-radius: 12px; padding: 28px 24px;
  box-shadow: var(--shadow);
}
.flashes { list-style: none; padding: 0; margin: 0 0 14px; }
.flash { padding: 10px 12px; border-radius: 8px; margin-bottom: 6px; font-size: .9rem; }
.flash.ok { background: var(--flash-ok-bg); color: var(--flash-ok-fg); }
.flash.error { background: var(--flash-bad-bg); color: var(--flash-bad-fg); }
.toolbar { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 14px; align-items: center; }
.mono { font-family: Consolas, "Courier New", monospace; font-size: .82rem; word-break: break-all; }
.bar {
  height: 8px; background: var(--code-bg); border-radius: 4px; overflow: hidden; margin-top: 4px;
}
.bar > span { display: block; height: 100%; background: var(--accent); }
.bar.warn > span { background: var(--warn); }
.bar.bad > span { background: var(--bad); }
.codebox {
  background: var(--code-bg); border: 1px solid var(--line); border-radius: 8px;
  padding: 12px; font-size: .8rem; overflow-x: auto; white-space: pre-wrap;
}
.help-card ol, .help-card ul { margin: 8px 0 0; padding-left: 18px; }
.chart-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 12px;
  margin-bottom: 18px;
}
.chart-card canvas { max-height: 220px; }
@media (max-width: 700px) {
  .topbar nav { gap: 10px; }
  table { font-size: .8rem; }
}