*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg-primary:   #313338;
  --bg-secondary: #2b2d31;
  --bg-tertiary:  #1e1f22;
  --accent:       #5865F2;
  --accent-hover: #4752c4;
  --text-primary: #f2f3f5;
  --text-muted:   #949ba4;
  --error:        #f23f42;
  --input-bg:     #1e1f22;
  --card-bg:      #313338;
  --border:       #3f4248;
}

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg-tertiary);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.auth-bg {
  min-height: 100vh;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(ellipse at 20% 20%, rgba(88,101,242,.25) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(87,242,135,.1) 0%, transparent 50%),
    var(--bg-tertiary);
  padding: 24px;
}

.auth-card {
  background: var(--card-bg);
  border-radius: 16px;
  padding: 40px;
  width: 100%;
  max-width: 440px;
  box-shadow: 0 20px 60px rgba(0,0,0,.5);
  border: 1px solid var(--border);
}

.auth-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
}

h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.auth-subtitle {
  color: var(--text-muted);
  font-size: 15px;
  margin-bottom: 28px;
}

.auth-error {
  background: rgba(242,63,66,.15);
  border: 1px solid rgba(242,63,66,.4);
  color: #f23f42;
  border-radius: 8px;
  padding: 12px 16px;
  margin-bottom: 20px;
  font-size: 14px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .6px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.form-group label .required { color: var(--error); margin-left: 2px; }

.form-group input {
  width: 100%;
  background: var(--input-bg);
  border: 1.5px solid var(--border);
  border-radius: 8px;
  padding: 12px 16px;
  color: var(--text-primary);
  font-size: 15px;
  outline: none;
  transition: border-color .15s;
}

.form-group input:focus {
  border-color: var(--accent);
}

.form-group input::placeholder { color: #4e5058; }

.form-group small {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  color: var(--text-muted);
}

.btn-primary {
  width: 100%;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 8px;
  padding: 14px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: background .15s, transform .1s;
  margin-top: 4px;
}

.btn-primary:hover { background: var(--accent-hover); }
.btn-primary:active { transform: scale(.99); }

.auth-footer {
  text-align: center;
  margin-top: 24px;
  font-size: 14px;
  color: var(--text-muted);
}

.auth-footer a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}
.auth-footer a:hover { text-decoration: underline; }

.auth-demo {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.auth-demo p {
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .5px;
  margin-bottom: 10px;
}

.demo-accounts {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.demo-accounts button {
  flex: 1;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
  color: var(--text-muted);
  font-size: 12px;
  cursor: pointer;
  transition: all .15s;
  white-space: nowrap;
}

.demo-accounts button:hover {
  background: var(--bg-primary);
  color: var(--text-primary);
  border-color: var(--accent);
}