:root {
  --navy: #0b2545;
  --navy-dark: #081a33;
  --teal: #0f8a8a;
  --teal-dark: #0b6b6b;
  --bg: #f4f6f8;
  --card: #ffffff;
  --border: #e1e6ea;
  --text: #1c2733;
  --muted: #5c6b7a;
  --danger: #c0392b;
  --ok: #1e8e3e;
  --radius: 10px;
}

* { box-sizing: border-box; }

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

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

.topbar {
  background: var(--navy);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 1.5rem;
}

.topbar .brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.1rem;
  color: #fff;
}

.topbar .brand .dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--teal);
  display: inline-block;
}

.topbar nav {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  font-size: 0.95rem;
}

.topbar nav a { color: #d7e2ee; }
.topbar nav a.active, .topbar nav a:hover { color: #fff; }

.topbar form { margin: 0; }
.topbar button.link {
  background: none; border: none; color: #d7e2ee; cursor: pointer;
  font-size: 0.95rem; padding: 0;
}
.topbar button.link:hover { color: #fff; text-decoration: underline; }

.container {
  max-width: 980px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

.auth-wrap {
  max-width: 380px;
  margin: 10vh auto;
  padding: 0 1rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

h1 { font-size: 1.5rem; margin: 0 0 1rem; }
h2 { font-size: 1.15rem; margin: 1.8rem 0 0.8rem; }
h3 { font-size: 1rem; margin: 0 0 0.3rem; }

.tabs {
  display: flex;
  gap: 0.4rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1.5rem;
}

.tabs a {
  padding: 0.6rem 1rem;
  color: var(--muted);
  border-bottom: 2px solid transparent;
  font-weight: 600;
  font-size: 0.95rem;
}

.tabs a.active {
  color: var(--navy);
  border-bottom-color: var(--teal);
}

.resource-list {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.resource {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.resource .meta { flex: 1; min-width: 220px; }
.resource .desc { color: var(--muted); font-size: 0.9rem; margin-top: 0.2rem; }
.resource .actions { display: flex; align-items: center; gap: 0.6rem; flex-wrap: wrap; }

.badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  background: #eef2f5;
  color: var(--muted);
}

.badge.ok { background: #e6f4ea; color: var(--ok); }
.badge.warn { background: #fdecea; color: var(--danger); }

.btn {
  display: inline-block;
  background: var(--teal);
  color: #fff;
  border: none;
  padding: 0.5rem 0.9rem;
  border-radius: 7px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
}
.btn:hover { background: var(--teal-dark); text-decoration: none; color: #fff; }
.btn.secondary { background: #fff; color: var(--navy); border: 1px solid var(--border); }
.btn.secondary:hover { background: #f0f3f5; color: var(--navy); }
.btn.danger { background: var(--danger); }
.btn.danger:hover { background: #a3291c; }
.btn[disabled] { opacity: 0.6; cursor: default; }

.category-heading {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  margin: 1.6rem 0 0.5rem;
}
.category-heading:first-child { margin-top: 0; }

form.stacked { display: flex; flex-direction: column; gap: 0.9rem; }
label { font-weight: 600; font-size: 0.9rem; display: block; margin-bottom: 0.3rem; }
input[type=text], input[type=email], input[type=password], input[type=file], select, textarea {
  width: 100%;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 7px;
  font-size: 0.95rem;
  font-family: inherit;
  background: #fff;
  color: var(--text);
}
textarea { min-height: 80px; resize: vertical; }

.alert {
  padding: 0.7rem 0.9rem;
  border-radius: 7px;
  font-size: 0.9rem;
  margin-bottom: 1rem;
}
.alert.error { background: #fdecea; color: var(--danger); border: 1px solid #f5c6c1; }
.alert.success { background: #e6f4ea; color: var(--ok); border: 1px solid #bfe3c9; }
.alert.info { background: #eaf2fb; color: #1a4d8f; border: 1px solid #c9ddf5; }

table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { text-align: left; padding: 0.55rem 0.6rem; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; font-size: 0.8rem; text-transform: uppercase; }

.row-actions { display: flex; gap: 0.5rem; }
.row-actions form { display: inline; }

.empty { color: var(--muted); font-size: 0.9rem; padding: 1rem 0; }

.admin-nav { display: flex; gap: 0.6rem; margin-bottom: 1.5rem; flex-wrap: wrap; }
.admin-nav a {
  padding: 0.4rem 0.8rem;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--border);
  color: var(--navy);
  font-size: 0.88rem;
  font-weight: 600;
}
.admin-nav a.active { background: var(--navy); color: #fff; border-color: var(--navy); }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0.9rem; }
@media (max-width: 600px) { .grid-2 { grid-template-columns: 1fr; } }

.hint { font-size: 0.82rem; color: var(--muted); margin-top: 0.25rem; }
.footer-note { margin-top: 3rem; font-size: 0.8rem; color: var(--muted); text-align: center; }