:root {
  --bg: #eef1f7;
  --panel: #ffffff;
  --border: #dfe5ef;
  --text: #10233f;
  --muted: #4f5f78;
  --brand: #ff7a1a;
  --brand-soft: #fff4ea;
  --brand-soft-2: #fff8f2;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
}

a {
  color: inherit;
}

body {
  overflow: auto;
}

.shell {
  display: grid;
  grid-template-columns: 220px 1fr;
  min-height: 100vh;
  background: var(--bg);
}

.sidebar {
  background: var(--panel);
  border-right: 1px solid var(--border);
  padding: 18px 12px 16px;
  overflow-y: auto;
}

.brand-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  padding: 2px 4px 0;
}

.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid var(--border);
  display: block;
  object-fit: cover;
  color: var(--brand);
  font-weight: 700;
  font-size: 0.82rem;
  background: #fff;
  flex: 0 0 auto;
}

.brand-meta small {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: #8090a8;
  margin-bottom: 4px;
}

.brand-meta h1 {
  margin: 0;
  font-size: 1.03rem;
  line-height: 1.08;
  color: #111827;
}

.nav-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.nav-links a {
  display: block;
  text-decoration: none;
  color: #10233f;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 14px;
  font-size: 0.92rem;
  line-height: 1.1;
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
  box-shadow: 0 1px 0 rgba(16, 35, 63, 0.02);
}

.nav-links a:hover {
  background: var(--brand-soft);
  border-color: #f6c59c;
  transform: translateX(1px);
}

.nav-links a.active {
  background: var(--brand);
  border-color: var(--brand);
  color: #fff;
  font-weight: 700;
}

.sidebar-note {
  margin-top: 14px;
  border: 1px solid #f4d5ba;
  background: var(--brand-soft);
  color: #99531d;
  border-radius: 12px;
  padding: 14px 12px;
  font-size: 0.86rem;
  line-height: 1.5;
}

.content {
  padding: 28px 22px;
  overflow: auto;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  min-height: 240px;
  padding: 18px 22px;
  box-shadow: 0 12px 28px rgba(16, 35, 63, 0.05);
}

.card h1,
.card h2 {
  margin: 0 0 6px;
  font-size: 1.7rem;
  line-height: 1.1;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.badge {
  display: inline-block;
  margin-top: 16px;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--brand-soft-2);
  color: #8b4a19;
  font-size: 0.9rem;
}

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

  .sidebar {
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .content {
    padding: 16px;
  }
}

@media (max-width: 1024px) {
  .shell,
  .layout,
  .admin-layout {
    grid-template-columns: 1fr;
  }

  .content,
  .main,
  .admin-main {
    padding-left: 14px;
    padding-right: 14px;
  }

  .sidebar,
  .admin-sidebar {
    width: 280px;
    max-width: 86vw;
    height: 100vh;
    box-shadow: 18px 0 40px rgba(15, 23, 42, 0.18);
  }
}

@media (max-width: 640px) {
  .card {
    border-radius: 14px;
  }

  table {
    display: block;
    width: 100%;
    overflow-x: auto;
  }
}