:root {
  --bg: #f1f3f6;
  --surface: #ffffff;
  --ink: #11151f;
  --ink-muted: #565e6c;
  --accent: #2c55d6;
  --ok: #16916e;
  --ok-bg: #e6f5ef;
  --warn: #b4640c;
  --warn-bg: #fbf0df;
  --rule: #d8dde6;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  color: var(--ink);
  font-family: "Segoe UI", -apple-system, BlinkMacSystemFont, Arial, sans-serif;
  padding: 24px;
}

.card {
  width: 100%;
  max-width: 440px;
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 12px;
  padding: 32px;
  box-shadow: 0 8px 24px -12px rgba(17, 21, 31, 0.15);
}

h1 {
  font-size: 22px;
  margin: 0 0 6px;
}

.subtitle {
  color: var(--ink-muted);
  font-size: 14px;
  margin: 0 0 24px;
}

label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
}

input[type="text"] {
  width: 100%;
  padding: 12px 14px;
  font-size: 20px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-align: center;
  border: 1px solid var(--rule);
  border-radius: 8px;
  margin-bottom: 16px;
}

button {
  width: 100%;
  padding: 12px;
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  border: none;
  border-radius: 8px;
  cursor: pointer;
}

button:hover { opacity: 0.92; }

.error {
  background: var(--warn-bg);
  color: var(--warn);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 13.5px;
  margin-bottom: 16px;
}

.hello {
  font-size: 14px;
  color: var(--ink-muted);
  margin-bottom: 4px;
}

.atelier-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  background: var(--bg);
  border: 1px solid var(--rule);
  border-radius: 999px;
  padding: 4px 12px;
  margin-bottom: 20px;
}

.credentials {
  background: var(--ok-bg);
  border: 1px solid color-mix(in srgb, var(--ok) 35%, transparent);
  border-radius: 8px;
  padding: 16px;
  margin-top: 16px;
}

.credentials dt {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-muted);
  margin-top: 10px;
}
.credentials dt:first-child { margin-top: 0; }

.credentials dd {
  margin: 2px 0 0;
  font-size: 14px;
  word-break: break-all;
}

.credentials a { color: var(--accent); }

.logout {
  display: block;
  text-align: center;
  margin-top: 20px;
  font-size: 13px;
  color: var(--ink-muted);
  text-decoration: none;
}

.card.wide { max-width: 820px; }

.trainer-nav {
  display: flex;
  gap: 16px;
  margin-bottom: 20px;
}
.trainer-nav a {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-muted);
  text-decoration: none;
}
.trainer-nav a.active { color: var(--accent); }

table.roster {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  margin-top: 12px;
}
table.roster th, table.roster td {
  text-align: left;
  padding: 10px 8px;
  border-bottom: 1px solid var(--rule);
}
table.roster th {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ink-muted);
}
table.roster tr:last-child td { border-bottom: none; }

.status-pill {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: 999px;
}
.status-pill.created { background: var(--ok-bg); color: var(--ok); }
.status-pill.not_created { background: var(--bg); color: var(--ink-muted); border: 1px solid var(--rule); }

.btn-small {
  width: auto;
  padding: 6px 12px;
  font-size: 12.5px;
  background: var(--warn);
}

.empty-note {
  color: var(--ink-muted);
  font-size: 14px;
  margin-top: 16px;
}