:root {
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --bg: #f8fafc;
  --card-bg: #ffffff;
  --text: #1e293b;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --danger: #ef4444;
  --danger-bg: #fef2f2;
  --success: #16a34a;
  --success-bg: #f0fdf4;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

body {
  min-height: 100vh;
  background-color: var(--bg);
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  width: 100%;
  max-width: 400px;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.card-title {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.card-subtitle {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

.form-group {
  margin-bottom: 1rem;
}

label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

input[type="text"],
input[type="password"] {
  width: 100%;
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.95rem;
}

input:focus {
  outline: 2px solid var(--primary);
  border-color: transparent;
}

.btn {
  display: inline-block;
  width: 100%;
  padding: 0.7rem;
  border: none;
  border-radius: 8px;
  background-color: var(--primary);
  color: #fff;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  margin-top: 0.5rem;
}

.btn:hover {
  background-color: var(--primary-hover);
}

.btn-secondary {
  background: transparent;
  color: var(--danger);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background-color: var(--danger-bg);
}

.alert {
  padding: 0.75rem;
  border-radius: 8px;
  font-size: 0.85rem;
  margin-bottom: 1rem;
  background-color: var(--danger-bg);
  color: var(--danger);
}

.info-list {
  margin: 1.5rem 0;
  border-top: 1px solid var(--border);
}

.info-row {
  display: flex;
  justify-content: space-between;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}

.info-label {
  color: var(--text-muted);
}

.info-value {
  font-weight: 600;
}

.alert-success {
  background-color: var(--success-bg);
  color: var(--success);
  border: 1px solid #bbf7d0;
}