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

body {
font-family: -apple-system, BlinkMacSystemFont, ‘Segoe UI’, Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
min-height: 100vh;
overflow-x: hidden;
}

/* Ekran instalacji */
.install-screen {
display: flex;
justify-content: center;
align-items: center;
min-height: 100vh;
padding: 20px;
}

.install-container {
background: white;
border-radius: 20px;
padding: 40px 30px;
max-width: 500px;
width: 100%;
text-align: center;
box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.app-icon {
font-size: 80px;
margin-bottom: 20px;
animation: bounce 2s infinite;
}

@keyframes bounce {
0%, 100% {
transform: translateY(0);
}
50% {
transform: translateY(-10px);
}
}

.install-container h1 {
color: #333;
font-size: 28px;
margin-bottom: 15px;
}

.install-container > p {
color: #666;
font-size: 16px;
line-height: 1.6;
margin-bottom: 30px;
}

.instructions {
text-align: left;
background: #f8f9fa;
border-radius: 10px;
padding: 20px;
margin-bottom: 20px;
}

.instructions h3 {
color: #667eea;
font-size: 16px;
margin-bottom: 10px;
margin-top: 15px;
}

.instructions h3:first-child {
margin-top: 0;
}

.instructions ol {
margin-left: 20px;
color: #555;
}

.instructions li {
margin-bottom: 8px;
line-height: 1.5;
}

.icon {
font-weight: bold;
color: #667eea;
}

.install-btn {
background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
color: white;
border: none;
padding: 15px 40px;
border-radius: 50px;
font-size: 16px;
font-weight: 600;
cursor: pointer;
transition: transform 0.2s, box-shadow 0.2s;
box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.install-btn:hover {
transform: translateY(-2px);
box-shadow: 0 6px 20px rgba(102, 126, 234, 0.6);
}

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

/* Ekran aplikacji */
.app-screen {
min-height: 100vh;
display: flex;
flex-direction: column;
}

.app-header {
background: rgba(255, 255, 255, 0.95);
padding: 20px;
text-align: center;
box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
backdrop-filter: blur(10px);
}

.app-header h1 {
color: #667eea;
font-size: 24px;
}

.app-main {
flex: 1;
padding: 20px;
max-width: 800px;
width: 100%;
margin: 0 auto;
}

.card {
background: white;
border-radius: 15px;
padding: 25px;
margin-bottom: 20px;
box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
animation: fadeInUp 0.5s ease-out;
}

@keyframes fadeInUp {
from {
opacity: 0;
transform: translateY(20px);
}
to {
opacity: 1;
transform: translateY(0);
}
}

.card h2 {
color: #333;
font-size: 24px;
margin-bottom: 15px;
}

.card h3 {
color: #667eea;
font-size: 20px;
margin-bottom: 15px;
}

.card p {
color: #666;
line-height: 1.6;
margin-bottom: 10px;
}

.card ul {
list-style: none;
padding: 0;
}

.card li {
color: #555;
padding: 8px 0;
font-size: 16px;
}

#status {
color: #28a745;
font-weight: 600;
}

#mode {
color: #667eea;
font-weight: 600;
font-size: 14px;
}

.app-footer {
background: rgba(255, 255, 255, 0.95);
padding: 20px;
text-align: center;
color: #666;
backdrop-filter: blur(10px);
}

/* Responsywność */
@media (max-width: 600px) {
.install-container {
padding: 30px 20px;
}

```
.app-icon {
    font-size: 60px;
}

.install-container h1 {
    font-size: 24px;
}

.card {
    padding: 20px;
}
```

}