:root {
  --bg: #f4f6f8;
  --panel: #ffffff;
  --ink: #1c242b;
  --muted: #5c6772;
  --border: #dfe4e9;
  --brand: #1e5b8a;
  --brand-dark: #163f5f;
  --accent: #d97b29;
  --danger: #b4413a;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(0,0,0,0.08);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.5;
}

a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3 { line-height: 1.25; margin-top: 0; }

.topbar { background: var(--brand-dark); color: white; }
.topbar-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.brand { color: white; font-weight: 700; font-size: 1.1rem; }
.main-nav { display: flex; gap: 1rem; flex-wrap: wrap; flex: 1; }
.main-nav a { color: #dcebf3; }
.main-nav a.active, .main-nav a:hover { color: white; text-decoration: underline; }
.nav-user { display: flex; align-items: center; gap: 0.75rem; color: #dcebf3; font-size: 0.9rem; }
.nav-user a { color: white; }

.mobile-nav-toggle { display: none; }

.page-container { max-width: 1100px; margin: 0 auto; padding: 1.25rem 1rem 3rem; }

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.25rem;
  margin-bottom: 1.25rem;
}
.card-list { display: grid; gap: 1rem; }

.btn {
  display: inline-block;
  background: var(--brand);
  color: white;
  border: none;
  padding: 0.6rem 1.1rem;
  border-radius: 8px;
  font-size: 1rem;
  cursor: pointer;
  text-align: center;
}
.btn:hover { background: var(--brand-dark); text-decoration: none; }
.btn.secondary { background: transparent; color: var(--brand); border: 1px solid var(--brand); }
.btn.secondary:hover { background: #e8f0f6; }
.btn.danger { background: var(--danger); }
.btn.full { width: 100%; }

form .field { margin-bottom: 1rem; }
label { display: block; font-weight: 600; margin-bottom: 0.3rem; font-size: 0.92rem; }
input[type=text], input[type=email], input[type=password], input[type=number], select, textarea {
  width: 100%;
  padding: 0.6rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 1rem;
  background: white;
  color: var(--ink);
}
.hint { color: var(--muted); font-size: 0.85rem; margin-top: 0.25rem; }

.alert { padding: 0.75rem 1rem; border-radius: 8px; margin-bottom: 1rem; font-size: 0.95rem; }
.alert.error { background: #fbe9e7; color: var(--danger); border: 1px solid #f0c4bf; }
.alert.success { background: #e6f0f7; color: var(--brand-dark); border: 1px solid #bcd8eb; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }

.pill { display: inline-block; padding: 0.15rem 0.6rem; border-radius: 20px; font-size: 0.8rem; background: #e8f0f6; color: var(--brand-dark); }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 0.55rem 0.6rem; border-bottom: 1px solid var(--border); font-size: 0.92rem; }
th { color: var(--muted); font-weight: 600; font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.02em; }
th.sortable { cursor: pointer; user-select: none; white-space: nowrap; }
th.sortable:hover { color: var(--brand-dark); }
.sort-arrow { color: var(--brand); font-size: 0.75em; }

.link-button {
  background: none;
  border: none;
  padding: 0;
  margin: 0;
  font: inherit;
  font-weight: 700;
  color: var(--brand);
  cursor: pointer;
  text-decoration: underline;
}
.link-button:hover { color: var(--brand-dark); }

.panel-row td { background: #f4f6f5; }
.panel-row a { margin-right: 0.25rem; }

.site-footer { text-align: center; color: var(--muted); font-size: 0.85rem; padding: 1.5rem 1rem; }

@media (max-width: 720px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .topbar-inner { flex-direction: column; align-items: flex-start; }
  .main-nav { display: none; flex-direction: column; width: 100%; background: var(--brand-dark); }
  .main-nav.open { display: flex; }
  .mobile-nav-toggle { display: block; width: 100%; background: var(--brand-dark); color: white; border: none; padding: 0.6rem 1rem; font-size: 1rem; text-align: left; }
}