:root {
  --rd-bg: #f4f7fb;
  --rd-surface: #ffffff;
  --rd-ink: #1a2b3c;
  --rd-muted: #5b6b7c;
  --rd-accent: #0f6e56;
  --rd-accent-dark: #0a5240;
  --rd-border: #d7e0ea;
  --rd-danger: #b42318;
  --rd-shadow: 0 10px 30px rgba(26, 43, 60, 0.08);
  --rd-radius: 14px;
  --font-display: "Source Serif 4", Georgia, serif;
  --font-body: "IBM Plex Sans", "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--rd-ink);
  background:
    radial-gradient(circle at top left, rgba(15, 110, 86, 0.08), transparent 35%),
    linear-gradient(180deg, #eef3f8 0%, var(--rd-bg) 100%);
  min-height: 100vh;
}

a {
  color: var(--rd-accent);
  text-decoration: none;
}

a:hover {
  color: var(--rd-accent-dark);
}

.app-shell {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}

.sidebar {
  background: #102433;
  color: #e8eef4;
  padding: 1.75rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.brand {
  font-family: var(--font-display);
  font-size: 1.45rem;
  line-height: 1.2;
  letter-spacing: 0.01em;
}

.brand span {
  display: block;
  margin-top: 0.35rem;
  font-family: var(--font-body);
  font-size: 0.8rem;
  color: #9db0c1;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.nav-links a {
  color: #d5e0ea;
  padding: 0.7rem 0.85rem;
  border-radius: 10px;
}

.nav-links a:hover,
.nav-links a.active {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}

.main-area {
  padding: 1.5rem 2rem 2.5rem;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  gap: 1rem;
}

.topbar h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 600;
}

.user-chip {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--rd-muted);
}

.card {
  background: var(--rd-surface);
  border: 1px solid var(--rd-border);
  border-radius: var(--rd-radius);
  box-shadow: var(--rd-shadow);
  padding: 1.25rem 1.5rem;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.stat-card h2 {
  margin: 0;
  font-size: 2rem;
  font-family: var(--font-display);
}

.stat-card p {
  margin: 0.35rem 0 0;
  color: var(--rd-muted);
}

.table {
  margin-bottom: 0;
}

.table th {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--rd-muted);
}

.btn-primary {
  --bs-btn-bg: var(--rd-accent);
  --bs-btn-border-color: var(--rd-accent);
  --bs-btn-hover-bg: var(--rd-accent-dark);
  --bs-btn-hover-border-color: var(--rd-accent-dark);
}

.btn-outline-secondary {
  --bs-btn-color: var(--rd-ink);
  --bs-btn-border-color: var(--rd-border);
}

.alert {
  border-radius: 12px;
}

.login-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 2rem;
  background:
    linear-gradient(135deg, rgba(16, 36, 51, 0.92), rgba(15, 110, 86, 0.75)),
    url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.login-card {
  width: min(420px, 100%);
  background: rgba(255, 255, 255, 0.96);
  border-radius: 18px;
  padding: 2rem;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
}

.login-card h1 {
  font-family: var(--font-display);
  margin-bottom: 0.35rem;
}

.login-card .subtitle {
  color: var(--rd-muted);
  margin-bottom: 1.5rem;
}

.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.badge-soft {
  background: #e7f5f0;
  color: var(--rd-accent-dark);
  border-radius: 999px;
  padding: 0.25rem 0.65rem;
  font-size: 0.8rem;
}

@media (max-width: 900px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    padding-bottom: 1rem;
  }

  .stats {
    grid-template-columns: 1fr;
  }

  .main-area {
    padding: 1rem;
  }
}