:root {
  --bg-gradient: linear-gradient(135deg, #121821 0%, #0a0e14 100%);
  --panel-bg: #1a222d;
  --border: #2b384d;
  --text-main: #e0e6eb;
  --text-muted: #9fa9b3;
  --accent: #3b6cd6;
  --accent-hover: #4a88e0;
  --success: #2ecc71;
}

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

body {
  margin: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: var(--bg-gradient);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
}

.welcome-card {
  width: 100%;
  max-width: 500px;
  background: var(--panel-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
  text-align: center;
}

h1 {
  font-size: 28px;
  margin-bottom: 12px;
  color: #ffffff;
  letter-spacing: 0.8px;
}

p.subtitle {
  color: var(--text-muted);
  margin-bottom: 32px;
  line-height: 1.5;
}

.msg-success {
  background-color: rgba(46, 204, 113, 0.12);
  color: var(--success);
  padding: 12px 16px;
  border-radius: 8px;
  border: 1px solid rgba(46, 204, 113, 0.25);
  margin-bottom: 24px;
  font-weight: 500;
}

.action-buttons {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.btn {
  padding: 14px 24px;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.btn-primary {
  background: linear-gradient(45deg, var(--accent), var(--accent-hover));
  color: white;
  box-shadow: 0 4px 12px rgba(59, 109, 214, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(59, 109, 214, 0.4);
}

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

.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
}

@media (max-width: 480px) {
  .welcome-card {
    padding: 30px 20px;
  }
  h1 {
    font-size: 24px;
  }
}