* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, sans-serif;
  min-height: 100vh;
  background: linear-gradient(180deg, #f4f7ff 0%, #ffffff 100%);
  color: #0f172a;
}

.app {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px;
}

.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: rgba(15, 23, 42, 0.04);
  border-radius: 24px;
  padding: 18px 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 1rem;
  font-weight: 700;
}

.brand-dot {
  width: 14px;
  height: 14px;
  border-radius: 9999px;
  background: #38bdf8;
}

.fullscreen-button {
  border: none;
  background: #2563eb;
  color: white;
  border-radius: 9999px;
  padding: 12px 20px;
  font-size: 0.95rem;
  cursor: pointer;
}

.prototype-wrapper {
  margin-top: 24px;
  min-height: 620px;
  border-radius: 32px;
  overflow: hidden;
  background: white;
  box-shadow: 0 24px 80px rgba(15, 23, 42, 0.08);
}

.loader {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 16px;
  background: rgba(255, 255, 255, 0.92);
}

.spinner {
  width: 52px;
  height: 52px;
  border-radius: 9999px;
  border: 6px solid #dbeafe;
  border-top-color: #2563eb;
  animation: spin 1s linear infinite;
}

iframe {
  width: 100%;
  height: 720px;
  border: none;
  display: block;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}