:root {
  --bg: #0f1115;
  --panel: #171a21;
  --border: #262b36;
  --text: #e6e8eb;
  --muted: #9aa3b2;
  --accent: #5b8cff;
  --accent-hover: #4472e0;
  --danger: #e05252;
  --ok: #3fb27f;
  --radius: 10px;
}

* { box-sizing: border-box; }

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

.container {
  max-width: 860px;
  margin: 0 auto;
  padding: 24px 16px 64px;
}

.center-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

header.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
  padding: 14px 20px;
}

header.topbar .brand {
  font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--text);
  text-decoration: none;
}

header.topbar nav a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 18px;
  font-size: 14px;
}

header.topbar nav a:hover, header.topbar nav a.active { color: var(--text); }

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
}

h1 { font-size: 22px; margin: 0 0 4px; }
h2 { font-size: 17px; margin: 0 0 14px; }
p.subtitle { color: var(--muted); margin: 0 0 20px; font-size: 14px; }

label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; }

input[type=text], input[type=password], select {
  width: 100%;
  background: #0c0e13;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 14px;
  margin-bottom: 16px;
}

input[type=file] {
  width: 100%;
  padding: 24px 12px;
  border: 2px dashed var(--border);
  border-radius: 8px;
  background: #0c0e13;
  margin-bottom: 16px;
  color: var(--muted);
}

button, .btn {
  display: inline-block;
  background: var(--accent);
  color: white;
  border: none;
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
}

button:hover, .btn:hover { background: var(--accent-hover); }

button.danger, .btn.danger { background: transparent; color: var(--danger); border: 1px solid var(--danger); }
button.danger:hover { background: rgba(224,82,82,0.1); }

button.ghost, .btn.ghost { background: transparent; color: var(--muted); border: 1px solid var(--border); }

.alert { padding: 10px 14px; border-radius: 8px; margin-bottom: 16px; font-size: 14px; }
.alert.error { background: rgba(224,82,82,0.12); color: #ff8c8c; border: 1px solid rgba(224,82,82,0.3); }
.alert.ok { background: rgba(63,178,127,0.12); color: #7be0b0; border: 1px solid rgba(63,178,127,0.3); }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: 0.4px; }
tr:last-child td { border-bottom: none; }

.stats-row { display: flex; gap: 16px; margin-bottom: 20px; flex-wrap: wrap; }
.stat { flex: 1; min-width: 140px; background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; }
.stat .value { font-size: 26px; font-weight: 700; }
.stat .label { color: var(--muted); font-size: 13px; }

.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 11px; font-weight: 600; }
.badge.admin { background: rgba(91,140,255,0.15); color: #9db8ff; }
.badge.user { background: rgba(154,163,178,0.15); color: var(--muted); }

.inline-form { display: inline; }

.creds-box {
  background: #0c0e13;
  border: 1px solid var(--accent);
  border-radius: 8px;
  padding: 14px;
  margin-bottom: 16px;
  font-size: 14px;
}
.creds-box code { color: var(--accent); font-size: 15px; }

.empty { color: var(--muted); font-size: 14px; padding: 20px 0; text-align: center; }