* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", sans-serif;
  background: linear-gradient(135deg, #0f766e 0%, #134e4a 100%);
  min-height: 100vh;
  padding: 2rem 1rem 4rem;
  display: flex;
  justify-content: center;
}

#app {
  background: white;
  border-radius: 20px;
  box-shadow:
    0 20px 60px rgba(0, 0, 0, 0.15),
    0 8px 25px rgba(0, 0, 0, 0.08);
  width: 100%;
  max-width: 720px;
  padding: 2.5rem;
}

.hero {
  text-align: center;
  margin-bottom: 2.5rem;
}

.hero h1 {
  margin: 0 0 0.5rem;
  font-size: 2rem;
  color: #134e4a;
}

.subtitle {
  color: #4b5563;
  font-size: 0.95rem;
  line-height: 1.5;
  max-width: 480px;
  margin: 0 auto 1.25rem;
}

.badges {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: #f0fdfa;
  border: 1px solid #99f6e4;
  color: #0f766e;
  border-radius: 999px;
  padding: 0.3rem 0.8rem;
  font-size: 0.8rem;
  font-weight: 600;
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #9ca3af;
  display: inline-block;
}

.dot.ok {
  background: #10b981;
}

.dot.error {
  background: #ef4444;
}

h2 {
  font-size: 1.1rem;
  color: #1f2937;
  margin-bottom: 1rem;
}

.pipeline {
  margin-bottom: 2.5rem;
}

.steps {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 0.5rem;
}

.step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  padding: 1rem;
  background: #f8fafc;
  border-radius: 12px;
  border: 2px solid #e2e8f0;
  text-align: center;
  opacity: 0.35;
  transition: all 0.4s ease;
}

.step.visible {
  opacity: 1;
  border-color: #0f766e;
  box-shadow: 0 8px 20px rgba(15, 118, 110, 0.12);
}

.step .icon {
  font-size: 1.5rem;
}

.step .title {
  font-weight: 600;
  color: #1a1a1a;
  font-size: 0.85rem;
}

.step .terminal {
  font-family: "Courier New", monospace;
  background: #1a1a1a;
  color: #10b981;
  padding: 0.4rem 0.6rem;
  border-radius: 6px;
  font-size: 0.7rem;
  overflow-x: auto;
  max-width: 100%;
  white-space: nowrap;
}

.arrow {
  text-align: center;
  color: #0f766e;
  font-weight: bold;
  transform: rotate(90deg);
}

.demo {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 1.5rem;
}

.demo-hint {
  color: #6b7280;
  font-size: 0.85rem;
  margin-top: 0;
}

.demo-hint code {
  background: #e2e8f0;
  padding: 0.1rem 0.3rem;
  border-radius: 4px;
}

#hello-form {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

#hello-name {
  flex: 1;
  padding: 0.6rem 0.8rem;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  font-size: 0.9rem;
}

#hello-form button {
  padding: 0.6rem 1.2rem;
  background: #0f766e;
  color: white;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
}

#hello-form button:hover {
  background: #0d5f58;
}

.result {
  font-size: 0.9rem;
  min-height: 1.5rem;
}

.result.success {
  color: #047857;
}

.result.error {
  color: #b91c1c;
}

.footer {
  text-align: center;
  padding: 1.5rem 1rem;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.8);
}

.footer a {
  color: white;
  text-decoration: underline;
}

@media (max-width: 640px) {
  #app {
    padding: 1.5rem;
  }
}