:root {
  --bg: #f6f7f9;
  --panel: #ffffff;
  --text: #1b1f24;
  --muted: #667085;
  --line: #e6e8ec;
  --accent: #0f766e;
  --accent-dark: #115e59;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--bg);
}
a { color: var(--accent-dark); text-decoration: none; }
h1 { margin: 0 0 18px; font-size: 28px; }
h2 { margin: 0 0 14px; font-size: 18px; }

.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  width: 230px;
  background: #111827;
  color: #fff;
  padding: 22px 16px;
}
.brand {
  font-weight: 800;
  letter-spacing: 0.08em;
  margin-bottom: 24px;
}
.sidebar nav { display: grid; gap: 6px; }
.sidebar a, .sidebar button {
  display: block;
  width: 100%;
  padding: 10px 12px;
  border-radius: 7px;
  color: #d1d5db;
  background: transparent;
  border: 0;
  text-align: left;
  font: inherit;
  cursor: pointer;
}
.sidebar a.active, .sidebar a:hover, .sidebar button:hover {
  background: #1f2937;
  color: #fff;
}
.sidebar form { margin-top: 18px; }

.main {
  margin-left: 230px;
  padding: 28px;
}
.login-main {
  min-height: 100vh;
  display: grid;
  place-items: center;
}
.login-card {
  width: min(420px, calc(100vw - 32px));
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 28px;
}
.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
  margin-bottom: 18px;
  overflow-x: auto;
}
.narrow { max-width: 680px; }
.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}
.form {
  display: grid;
  gap: 12px;
}
.inline-form {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: end;
}
label {
  display: grid;
  gap: 5px;
  font-size: 13px;
  color: var(--muted);
}
input, select, textarea {
  width: 100%;
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 8px 10px;
  font: inherit;
  color: var(--text);
  background: #fff;
}
button, .button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #fff;
  color: var(--text);
  font: inherit;
  cursor: pointer;
}
.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.primary:hover { background: var(--accent-dark); }
.alert {
  background: #fff1f2;
  border: 1px solid #fecdd3;
  color: #9f1239;
  border-radius: 7px;
  padding: 10px;
  margin-bottom: 12px;
}
.hint {
  color: var(--muted);
  font-size: 13px;
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
th, td {
  padding: 9px 8px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}
th {
  color: var(--muted);
  font-weight: 700;
  background: #fafafa;
}
pre {
  white-space: pre-wrap;
  background: #0f172a;
  color: #e5e7eb;
  border-radius: 7px;
  padding: 12px;
}

@media (max-width: 900px) {
  .sidebar {
    position: static;
    width: auto;
  }
  .main {
    margin-left: 0;
    padding: 18px;
  }
  .grid {
    grid-template-columns: 1fr;
  }
}