:root {
  --purple: #7b2689;
  --ink: #1a1a1a;
  --muted: #6b7280;
  --line: #e5e7eb;
  --card-bg: #ffffff;
  --bg: #fafafa;
  --danger: #b91c1c;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

.login-card {
  max-width: 480px;
  width: 100%;
  text-align: center;
  padding: 32px 24px;
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
  background: var(--card-bg);
}

.login-title {
  font-size: 2rem;
  font-weight: 800;
  margin: 0 0 8px;
  letter-spacing: 1px;
  background: linear-gradient(to right, #2c3e50 0%, #8e44ad 60%, #d291bc 100%);
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}

.login-subtitle {
  margin: 0 0 24px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
}

.login-btn {
  display: inline-block;
  min-width: 200px;
  padding: 10px 20px;
  border: none;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  background: linear-gradient(90deg, #a93aff, #ff7a9c);
  color: #fff;
  text-decoration: none;
  text-align: center;
  transition: transform 0.05s ease;
}

.login-btn:hover {
  opacity: 0.92;
}

.login-btn:active {
  transform: translateY(1px);
}

.provider-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
  margin-top: 8px;
}

.field {
  display: flex;
  flex-direction: column;
  text-align: left;
  margin-bottom: 14px;
}

.field label {
  font-size: 13px;
  color: var(--ink);
  font-weight: 700;
  margin-bottom: 6px;
}

.field input {
  height: 42px;
  border-radius: 10px;
  border: 1px solid #eee;
  background: #fff;
  padding: 0 14px;
  outline: none;
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
}

.field input:focus {
  border-color: var(--purple);
  box-shadow: 0 0 0 1px rgba(123, 38, 137, 0.15);
}

.login-form {
  margin-top: 8px;
}

.login-form .login-btn {
  width: 100%;
  margin-top: 8px;
}

.banner {
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
  text-align: left;
}

.banner.error {
  background: #fff6f7;
  border: 1px solid #f3b4bd;
  color: var(--danger);
}

.banner.info {
  background: #f3e8ff;
  border: 1px solid #e6cdfa;
  color: var(--purple);
}