:root {
  --ink: #122033;
  --muted: #5d6e80;
  --line: #e3e8ee;
  --bg: #eef2f6;
  --card: #ffffff;
  --side: #0e1c2e;
  --side-2: #17324c;
  --accent: #0e7a45;
  --accent-2: #149258;
  --danger: #a33b3b;
  --warn: #9a6b12;
  --ok: #0e7a45;
  --shadow: 0 10px 30px rgba(16, 32, 51, 0.06);
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "Segoe UI", system-ui, sans-serif;
  color: var(--ink);
  background: var(--bg);
  min-height: 100vh;
}
a { color: inherit; }
button, input, select, textarea { font: inherit; color: inherit; }
.app { display: flex; min-height: 100vh; }
.side {
  width: 248px;
  background: linear-gradient(180deg, var(--side) 0%, #0b1726 100%);
  color: #d5deea;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}
.brand { padding: 28px 24px 18px; }
.brand strong { display: block; color: #fff; font-size: 18px; letter-spacing: .2px; }
.brand span { display: block; margin-top: 4px; color: #8ea0b5; font-size: 12px; letter-spacing: .08em; text-transform: uppercase; }
.nav { display: flex; flex-direction: column; padding: 8px 12px; gap: 4px; }
.nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  padding: 11px 12px;
  border-radius: 10px;
  color: #c5d2e0;
}
.nav a:hover { background: rgba(255,255,255,.05); }
.nav a.active { background: var(--side-2); color: #fff; }
.nav svg { width: 18px; height: 18px; stroke: currentColor; fill: none; stroke-width: 1.8; }
.side-foot { margin-top: auto; padding: 18px 22px 22px; color: #8ea0b5; font-size: 13px; }
.side-foot a { color: #d5deea; }
.main { flex: 1; min-width: 0; }
.top {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  padding: 28px 32px 0;
}
.top h1 { margin: 0; font-size: 26px; font-weight: 650; letter-spacing: -.3px; }
.top p { margin: 6px 0 0; color: var(--muted); }
.wrap { padding: 22px 32px 40px; }
.flash {
  background: #e8f6ee;
  color: #0d5c34;
  border: 1px solid #c9ead6;
  border-radius: 12px;
  padding: 12px 14px;
  margin-bottom: 16px;
}
.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.stat, .card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: var(--shadow);
}
.stat { padding: 18px 18px 16px; }
.stat span { color: var(--muted); font-size: 13px; }
.stat strong { display: block; margin-top: 8px; font-size: 28px; letter-spacing: -.4px; }
.card { margin-top: 16px; overflow: hidden; }
.card h2 { margin: 0; padding: 18px 18px 0; font-size: 16px; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 13px 16px; border-top: 1px solid var(--line); vertical-align: middle; }
th { color: var(--muted); font-size: 12px; font-weight: 650; letter-spacing: .04em; text-transform: uppercase; }
.toolbar { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 14px; }
.btn, button.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  border: 0;
  border-radius: 10px;
  padding: 10px 14px;
  cursor: pointer;
}
.btn:hover { background: var(--accent-2); }
.btn.ghost { background: #fff; color: var(--ink); border: 1px solid var(--line); }
.btn.danger { background: #fff; color: var(--danger); border: 1px solid #f0d4d4; }
.pill { display: inline-flex; align-items: center; border-radius: 999px; padding: 4px 9px; font-size: 12px; font-weight: 650; }
.pill.ok { background: #e7f6ee; color: var(--ok); }
.pill.off { background: #f8f1e3; color: var(--warn); }
.pill.no { background: #fbeeee; color: var(--danger); }
.sub { color: var(--muted); font-size: 12px; margin-top: 3px; }
.secret summary { cursor: pointer; color: var(--muted); font-size: 13px; }
.secret div { margin-top: 6px; font-size: 13px; }
.secret code { background: #f2f5f8; border: 1px solid var(--line); border-radius: 6px; padding: 2px 6px; user-select: all; }
.form { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 16px; padding: 18px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field.wide { grid-column: 1 / -1; }
.field label { font-size: 13px; font-weight: 650; }
.field small { color: var(--muted); line-height: 1.4; }
.field input, .field select, .field textarea {
  border: 1px solid #d5dde6;
  background: #fff;
  border-radius: 10px;
  padding: 11px 12px;
  outline: none;
}
.field textarea { min-height: 90px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: #9fb4c6; }
.actions { display: flex; gap: 10px; align-items: center; padding: 0 18px 18px; }
.error {
  margin: 18px 18px 0;
  background: #fbeeee;
  color: var(--danger);
  border-radius: 10px;
  padding: 10px 12px;
}
.login-page {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1.1fr .9fr;
}
.login-hero {
  background:
    radial-gradient(900px 420px at 10% 10%, rgba(20,146,88,.22), transparent 50%),
    linear-gradient(165deg, #0e1c2e, #10283a 55%, #0c3b32);
  color: #fff;
  padding: 64px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.login-hero h1 { font-size: 42px; line-height: 1.15; margin: 18px 0 12px; letter-spacing: -.6px; }
.login-hero p { max-width: 460px; color: #d5e3d8; font-size: 16px; line-height: 1.55; }
.marks { display: flex; gap: 18px; color: #d5e3d8; font-size: 14px; }
.login-card { display: flex; align-items: center; justify-content: center; padding: 32px; }
.login-card form {
  width: min(420px, 100%);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 28px;
}
.login-card h2 { margin: 0 0 6px; }
.login-card .lead { color: var(--muted); margin: 0 0 18px; }
.stack { display: flex; flex-direction: column; gap: 12px; }
.modal-back {
  position: fixed; inset: 0; background: rgba(14, 28, 46, .45);
  display: none; align-items: center; justify-content: center; padding: 20px;
}
.modal-back.show { display: flex; }
.modal {
  width: min(440px, 100%);
  background: #fff;
  border-radius: 16px;
  padding: 22px;
  box-shadow: var(--shadow);
}
.modal p { color: var(--muted); }
@media (max-width: 980px) {
  .app { flex-direction: column; }
  .side { width: auto; }
  .grid, .login-page, .form { grid-template-columns: 1fr; }
  .login-hero { display: none; }
  .top, .wrap { padding-left: 16px; padding-right: 16px; }
}