:root {
  --bg: #f4f6f8;
  --card: #ffffff;
  --border: #d9dee3;
  --text: #22303c;
  --muted: #6b7a88;
  --accent: #2563eb;
  --danger: #dc2626;
  --warning: #facc15;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 0.6rem 1.2rem;
  background: #1e293b;
  color: #fff;
}

.topbar .brand a {
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.1rem;
}

.topbar nav {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  flex-wrap: wrap;
}

.topbar nav a {
  color: #cbd5e1;
  text-decoration: none;
}

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

.topbar .whoami { color: #93c5fd; font-weight: 600; }
.topbar .logout { color: #fca5a5 !important; }

.container {
  max-width: 1100px;
  margin: 1.5rem auto;
  padding: 0 1rem;
}

h1 { margin-top: 0; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem 1.2rem;
  margin-bottom: 1.2rem;
}

.card h2 { margin-top: 0; font-size: 1.1rem; }

table {
  width: 100%;
  border-collapse: collapse;
}

th, td {
  text-align: left;
  padding: 0.45rem 0.6rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

th { background: #eef2f6; }

.tag {
  display: inline-block;
  background: #dbeafe;
  color: #1d4ed8;
  border-radius: 999px;
  padding: 0.1rem 0.6rem;
  font-size: 0.85rem;
}

.muted { color: var(--muted); }

.actions { white-space: nowrap; }
.actions form { display: inline-block; margin: 0; }

button, .btn-link {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 0.4rem 0.9rem;
  font-size: 0.9rem;
  line-height: 1.3;
  cursor: pointer;
  text-decoration: none;
}

button:hover, .btn-link:hover { filter: brightness(1.1); }

button.danger { background: var(--danger); }

button.warning { background: var(--warning); }

input[type="text"],
input[type="password"],
input[type="date"],
input[type="file"],
select {
  padding: 0.4rem 0.55rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.9rem;
  background: #fff;
}

label { display: block; margin-bottom: 0.7rem; font-weight: 600; }
label input, label select { display: block; width: 100%; margin-top: 0.25rem; font-weight: 400; }

.upload-form, .filter-form, .inline-form {
  display: flex;
  gap: 0.8rem;
  align-items: flex-end;
  flex-wrap: wrap;
}

.upload-form label, .filter-form label { margin-bottom: 0; }
.upload-form label input, .upload-form label select,
.filter-form label input, .filter-form label select { width: auto; }

.inline-form { align-items: center; }
.inline-form input[type="text"],
.inline-form input[type="password"] { width: 10rem; min-width: 0; }

.filter-form { margin-bottom: 1rem; }

.auth-card {
  max-width: 380px;
  margin: 3rem auto;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.5rem;
}

.auth-card h1 { margin-top: 0; }
.auth-card button { width: 100%; margin-top: 0.5rem; }

.flash {
  padding: 0.6rem 1rem;
  border-radius: 6px;
  margin-bottom: 1rem;
}

.flash.success { background: #dcfce7; color: #166534; }
.flash.error { background: #fee2e2; color: #991b1b; }