/* --- Dark Mode & Layout Base --- */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #121212; /* Dark background */
    color: #e0e0e0; /* Light text */
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
    margin: 0;
}

/* --- Navigation Bar --- */
.navbar {
    width: 100%;
    background-color: #1e1e1e;
    padding: 1rem 2rem;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-sizing: border-box;
    position: fixed;
    top: 0;
    z-index: 10;
}

.navbar-brand {
    font-weight: bold;
    font-size: 1.2rem;
    color: #ffffff;
    text-decoration: none;
}

.navbar-links a {
    color: #a0a0a0;
    text-decoration: none;
    margin-left: 1.5rem;
    font-size: 0.95rem;
    transition: color 0.2s;
}

.navbar-links a:hover {
    color: #ffffff;
}

/* --- Main Content Container --- */
.content-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-grow: 1;
    width: 100%;
    padding-top: 80px; /* Space for fixed navbar */
    box-sizing: border-box;
}

.SessionCreate {
    background: #1e1e1e; /* Slightly lighter dark for card */
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
    width: 100%;
    max-width: 450px;
    border: 1px solid #333;
}

/* --- Typography & Form Elements --- */
h2 { 
    color: #ffffff; 
    margin-top: 0; 
    border-bottom: 2px solid #9500cc; 
    padding-bottom: 10px; 
}

.description {
    color: #a0a0a0;
    font-size: 0.9rem;
}

.data-group {
    margin-top: 1.5rem;
    padding: 1rem;
    background: #2d2d2d; /* Darker input background */
    border: 1px solid #444;
    border-radius: 6px;
    position: relative;
}

label {
    display: block;
    font-size: 0.75rem;
    color: #a0a0a0;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.value {
    font-family: 'Courier New', Courier, monospace;
    word-break: break-all;
    color: #ffffff;
    font-weight: 600;
    font-size: 0.95rem;
}

/* The Submit Button */
.btn-generate {
    width: 100%;
    padding: 0.9rem;
    background-color: #9500cc; /* Green stands out well on dark */
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: bold;
    margin-top: 1.5rem;
    transition: background 0.2s;
}
.btn-generate:hover { background-color: #400c53; }

.copy-hint {
    font-size: 0.75rem;
    color: #58a6ff; /* Brighter blue for dark mode */
    cursor: pointer;
    text-decoration: underline;
    margin-top: 8px;
    display: inline-block;
}
.copy-hint:hover { color: #8ec3ff; }