:root {
  --bg: #0b0b0c;
  --panel: #171719;
  --panel-2: #1f2023;
  --line: rgba(210, 176, 84, 0.18);
  --line-strong: rgba(210, 176, 84, 0.34);
  --text: #ede3d1;
  --muted: #a79a83;
  --gold: #d2b054;
  --blue: #5d95d8;
  --green: #5fb47e;
  --amber: #dd9a46;
  --red: #d26156;
  --shadow: 0 18px 44px rgba(0, 0, 0, 0.28);
}
* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  background: linear-gradient(180deg, #131416 0%, #080809 100%);
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
}
body { min-height: 100vh; }
a { text-decoration: none; }
.login-body { display: grid; place-items: center; padding: 22px; }
.login-shell { width: 100%; max-width: 460px; }
.login-card, .panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow);
}
.login-card { padding: 28px; }
.login-title, .page-title, .section-title, .brand {
  font-family: Impact, Haettenschweiler, "Arial Narrow Bold", sans-serif;
  letter-spacing: 0.04em;
}
.login-title { margin: 10px 0 10px; font-size: 42px; line-height: 0.95; }
.muted { color: var(--muted); }
.form-stack { display: grid; gap: 14px; margin-top: 20px; }
.form-group { display: grid; gap: 7px; }
.form-group label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}
input, select, textarea {
  width: 100%;
  border: 1px solid var(--line);
  background: var(--panel-2);
  color: var(--text);
  border-radius: 12px;
  padding: 12px 14px;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 999px;
  padding: 12px 18px;
  border: 1px solid transparent;
  cursor: pointer;
  font-weight: 700;
}
.button-primary { background: var(--gold); color: #111; }
.button-secondary { background: transparent; color: var(--text); border-color: var(--line-strong); }
.button-full { width: 100%; }
.alert { margin-top: 16px; padding: 12px 14px; border-radius: 12px; font-size: 14px; }
.alert-error {
  background: rgba(210, 97, 86, 0.12);
  border: 1px solid rgba(210, 97, 86, 0.28);
  color: #ffaaa0;
}
.demo-box {
  margin-top: 20px;
  padding: 14px;
  border: 1px dashed var(--line-strong);
  border-radius: 12px;
  color: var(--muted);
  line-height: 1.7;
}
.demo-title, .eyebrow {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
}
.app-layout { display: grid; grid-template-columns: 280px 1fr; min-height: 100vh; }
.sidebar {
  background: rgba(10, 10, 11, 0.96);
  border-right: 1px solid var(--line);
  padding: 24px 18px;
}
.brand { font-size: 28px; color: var(--gold); }
.sidebar-chapter { margin-top: 6px; }
.sidebar-user { margin-top: 20px; padding: 14px; }
.sidebar-nav { display: grid; gap: 10px; margin-top: 18px; }
.nav-link {
  display: block;
  padding: 12px 14px;
  border-radius: 12px;
  color: var(--muted);
  border: 1px solid transparent;
}
.nav-link:hover, .nav-link.active {
  background: var(--panel-2);
  border-color: var(--line);
  color: var(--text);
}
.sidebar-logout { margin-top: 18px; }
.content { padding: 24px; }
.page-header { margin-bottom: 24px; }
.page-title { margin: 8px 0 8px; font-size: 36px; }
.page-subtitle { margin: 0; color: var(--muted); }
.stats-grid, .two-col { display: grid; gap: 16px; }
.stats-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.two-col { grid-template-columns: 1fr 1fr; }
.section-gap { margin-top: 24px; }
.stat-card, .pad { padding: 18px; }
.stat-value { margin-top: 8px; font-size: 34px; font-weight: 800; }
.section-top, .list-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.section-title { margin: 8px 0 0; font-size: 28px; }
.list { display: grid; gap: 12px; margin-top: 16px; }
.list-item {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.02);
}
.list-item h3 { margin: 0 0 6px; }
.status {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 7px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
}
.status.green { background: rgba(95, 180, 126, 0.12); color: var(--green); }
.status.amber { background: rgba(221, 154, 70, 0.12); color: var(--amber); }
.status.red { background: rgba(210, 97, 86, 0.12); color: var(--red); }
.status.blue { background: rgba(93, 149, 216, 0.12); color: var(--blue); }
.table-wrap { margin-top: 16px; overflow: auto; }
table { width: 100%; border-collapse: collapse; }
th, td {
  text-align: left;
  vertical-align: top;
  padding: 14px 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
th {
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}
.text-link { color: var(--gold); }
@media (max-width: 980px) {
  .app-layout, .stats-grid, .two-col { grid-template-columns: 1fr; }
}