body {
  min-height: 100vh;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #7f53ac 0%, #647dee 100%);
  font-family: 'Inter', 'Poppins', Arial, sans-serif;
  transition: background 0.4s;
}

#welcome, #app {
  width: 100vw;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.welcome-card {
  background: rgba(255,255,255,0.15);
  box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
  backdrop-filter: blur(8px);
  border-radius: 24px;
  padding: 2.5rem 2rem 2rem 2rem;
  max-width: 350px;
  width: 100%;
  text-align: center;
  animation: fadeIn 1s cubic-bezier(.39,.575,.565,1) both;
  border: 1.5px solid rgba(255,255,255,0.25);
  transition: background 0.4s, box-shadow 0.4s, border 0.4s;
}

.welcome-card h1 {
  font-family: 'Poppins', 'Inter', Arial, sans-serif;
  font-size: 2rem;
  margin-bottom: 1rem;
  color: #fff;
  text-shadow: 0 2px 8px rgba(127,83,172,0.25);
  transition: color 0.4s, text-shadow 0.4s;
}

.welcome-card p {
  font-size: 1.1rem;
  color: #f3eaff;
  margin-bottom: 2rem;
  line-height: 1.5;
  transition: color 0.4s;
}

.welcome-card button {
  font-family: inherit;
  font-size: 1.1rem;
  padding: 0.85rem 2.2rem;
  border-radius: 999px;
  border: none;
  background: linear-gradient(90deg, #7f53ac 0%, #647dee 100%);
  color: #fff;
  font-weight: 700;
  box-shadow: 0 4px 24px 0 rgba(127,83,172,0.25);
  cursor: pointer;
  transition: transform 0.18s, box-shadow 0.18s, background 0.18s, color 0.4s;
  outline: none;
  position: relative;
  z-index: 1;
}

.welcome-card button:hover, .welcome-card button:focus {
  transform: scale(1.06);
  box-shadow: 0 0 16px 4px #a084ee, 0 4px 24px 0 rgba(127,83,172,0.25);
  background: linear-gradient(90deg, #a084ee 0%, #7f53ac 100%);
}

@keyframes fadeIn {
  0% {
    opacity: 0;
    transform: translateY(32px) scale(0.98);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@media (max-width: 600px) {
  .welcome-card {
    padding: 1.5rem 0.5rem 1.5rem 0.5rem;
    max-width: 98vw;
  }
  .welcome-card h1 {
    font-size: 1.3rem;
  }
  .welcome-card p {
    font-size: 1rem;
  }
  .welcome-card button {
    font-size: 1rem;
    padding: 0.7rem 1.2rem;
  }
}

/* ===== DARK THEME ===== */
@media (prefers-color-scheme: dark) {
  body {
    background: linear-gradient(135deg, #2a174a 0%, #23243a 100%);
  }
  .welcome-card {
    background: rgba(30, 20, 50, 0.85);
    box-shadow: 0 8px 32px 0 rgba(40, 20, 80, 0.55);
    border: 1.5px solid rgba(127,83,172,0.25);
  }
  .welcome-card h1 {
    color: #e6d6ff;
    text-shadow: 0 2px 8px rgba(127,83,172,0.35);
  }
  .welcome-card p {
    color: #cbb6f7;
  }
  .welcome-card button {
    background: linear-gradient(90deg, #a084ee 0%, #7f53ac 100%);
    color: #fff;
    box-shadow: 0 4px 24px 0 rgba(127,83,172,0.35);
  }
  .welcome-card button:hover, .welcome-card button:focus {
    background: linear-gradient(90deg, #7f53ac 0%, #a084ee 100%);
    color: #fff;
    box-shadow: 0 0 20px 6px #7f53ac, 0 4px 24px 0 rgba(127,83,172,0.35);
  }
}