/* XNEXT - Couleurs du logo : bleu profond #0A3C7D → #1E63B4, blanc #FFFFFF */
:root {
  --blue-dark: #0A3C7D;
  --blue-light: #1E63B4;
  --white: #FFFFFF;
  --shadow: rgba(10, 60, 125, 0.35);
}

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

body {
  min-height: 100vh;
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: linear-gradient(135deg, var(--blue-dark) 0%, var(--blue-light) 100%);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.page {
  width: 100%;
  max-width: 480px;
}

.card {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 16px;
  padding: 2.5rem 2rem;
  text-align: center;
  box-shadow: 0 12px 40px var(--shadow);
  backdrop-filter: blur(12px);
}

.logo-wrap {
  margin-bottom: 1.75rem;
}

.logo {
  max-width: 140px;
  height: auto;
  display: block;
  margin: 0 auto;
}

.title {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  margin-bottom: 1rem;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.message {
  font-size: 0.95rem;
  line-height: 1.6;
  opacity: 0.95;
  margin-bottom: 1.75rem;
  max-width: 36ch;
  margin-left: auto;
  margin-right: auto;
}

.btn {
  display: inline-block;
  background: var(--white);
  color: var(--blue-dark);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.15);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

.btn:active {
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 480px) {
  .card {
    padding: 2rem 1.5rem;
  }

  .logo {
    max-width: 110px;
  }

  .title {
    font-size: 1.3rem;
  }

  .message {
    font-size: 0.9rem;
  }

  .btn {
    width: 100%;
    text-align: center;
  }
}

@media (min-width: 768px) {
  .card {
    padding: 3rem 2.5rem;
  }

  .logo {
    max-width: 160px;
  }

  .title {
    font-size: 1.65rem;
  }
}