body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: #121212;
    color: #e0e0e0;
    margin: 0;
    padding-bottom: 80px; /* Platz für Nav */
}
header {
    background-color: #b71c1c; /* Rettungsdienst Rot */
    padding: 15px;
    text-align: center;
    font-weight: bold;
    font-size: 1.2rem;
    position: sticky;
    top: 0;
    z-index: 1000;
}
.container { padding: 15px; }
.card {
    background-color: #1e1e1e;
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 15px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.5);
}
label { display: block; margin-top: 10px; color: #aaa; }
input, select, textarea {
    width: 100%;
    padding: 12px;
    margin-top: 5px;
    background: #333;
    border: 1px solid #444;
    color: #fff;
    border-radius: 4px;
    box-sizing: border-box;
}
button {
    width: 100%;
    padding: 15px;
    margin-top: 15px;
    background-color: #d32f2f;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    font-weight: bold;
}
.warning { color: #ff5252; font-weight: bold; border: 1px solid #ff5252; padding: 10px; margin-top: 10px; display: none; }
.success { color: #69f0ae; font-weight: bold; margin-top: 10px; }
.nav-bar {
    position: fixed;
    bottom: 0;
    width: 100%;
    background: #1e1e1e;
    display: flex;
    justify-content: space-around;
    padding: 15px 0;
    border-top: 1px solid #333;
}
.nav-item { color: #888; text-decoration: none; font-size: 0.9rem; }
.nav-item.active { color: #d32f2f; font-weight: bold; }
.hidden { display: none; }
#chat-window { height: 300px; overflow-y: scroll; border: 1px solid #333; padding: 10px; margin-bottom: 10px; }
.msg { margin-bottom: 5px; padding: 5px; background: #2c2c2c; border-radius: 4px; }
.msg.me { background: #388e3c; text-align: right; }