:root {
  --bg: #0f172a;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --line: #e2e8f0;
  --ms: #2f2f2f;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  font-family: "Pretendard", system-ui, sans-serif;
  background:
    radial-gradient(1200px 600px at 20% -10%, #1d4ed8 0%, transparent 55%),
    radial-gradient(900px 500px at 100% 0%, #0ea5e9 0%, transparent 50%),
    var(--bg);
  color: var(--text);
}

.login-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-card {
  width: min(440px, 100%);
  background: var(--card);
  border-radius: 20px;
  padding: 36px 32px 28px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}

.login-brand {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--muted);
  margin-bottom: 18px;
}

.login-brand span { color: #2563eb; }

.login-card h1 {
  margin: 0 0 8px;
  font-size: 26px;
  letter-spacing: -0.02em;
}

.login-lead {
  margin: 0 0 28px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.55;
}

.ms-login-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  width: 100%;
  min-height: 48px;
  border-radius: 10px;
  background: var(--ms);
  color: #fff;
  text-decoration: none;
  font-weight: 650;
  font-size: 15px;
  transition: background 0.15s ease, transform 0.15s ease;
}

.ms-login-btn:hover { background: #111; transform: translateY(-1px); }

.ms-logo {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  width: 18px;
  height: 18px;
}

.ms-logo span:nth-child(1) { background: #f25022; }
.ms-logo span:nth-child(2) { background: #7fba00; }
.ms-logo span:nth-child(3) { background: #00a4ef; }
.ms-logo span:nth-child(4) { background: #ffb900; }

.login-error {
  margin: 14px 0 0;
  padding: 10px 12px;
  border-radius: 8px;
  background: #fef2f2;
  color: #b91c1c;
  font-size: 13px;
  line-height: 1.4;
}

.setup-panel {
  margin-top: 28px;
  border-top: 1px solid var(--line);
  padding-top: 16px;
}

.setup-panel summary {
  cursor: pointer;
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
}

.setup-admin-note {
  margin: 0 0 12px;
  padding: 10px 12px;
  border-radius: 8px;
  background: #f1f5f9;
  color: #475569;
  font-size: 12px;
  line-height: 1.5;
}

.setup-admin-note code {
  font-size: 11px;
  background: #e2e8f0;
  padding: 1px 4px;
  border-radius: 4px;
}

.setup-panel[open] summary { margin-bottom: 12px; }

.setup-steps {
  margin: 0 0 14px;
  padding-left: 18px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.55;
}

.setup-steps a { color: #2563eb; }

.setup-field {
  display: grid;
  gap: 6px;
  margin-bottom: 10px;
  font-size: 12px;
  font-weight: 600;
  color: #334155;
}

.setup-field input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 12px;
  font: inherit;
  font-weight: 500;
  font-size: 13px;
}

.setup-save {
  width: 100%;
  margin-top: 4px;
  border: none;
  border-radius: 8px;
  padding: 11px 14px;
  background: #2563eb;
  color: #fff;
  font: inherit;
  font-weight: 650;
  cursor: pointer;
}

.setup-msg {
  margin: 10px 0 0;
  font-size: 12px;
  color: var(--muted);
  min-height: 1.2em;
}