html, body {
    height: 100%;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Arial, sans-serif;
    background: linear-gradient(135deg, #0a1622 0%, #1a2636 100%);
    color: #1e293b;
    box-sizing: border-box;
}

/* Topbar */
.topbar {
    position: absolute;
    top: 24px;
    right: 32px;
    display: flex;
    align-items: center;
    gap: 16px;
    z-index: 1000;
}

.topbar-btn, .logout-link {
    color: #00eaff;
    background: #101c2c;
    border: 2px solid #00eaff;
    border-radius: 12px;
    padding: 8px 20px;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    box-shadow: 0 0 8px #00eaff55;
    transition: background 0.2s, color 0.2s, box-shadow 0.2s;
}

.topbar-btn:hover, .logout-link:hover {
    background: #00eaff;
    color: #101c2c;
    box-shadow: 0 0 16px #00eaffcc;
}

.user-menu {
    position: relative;
    display: inline-block;
}

.user-circle {
    width: 40px;
    height: 40px;
    background: #00eaff;
    color: #101c2c;
    border-radius: 50%;
    text-align: center;
    line-height: 40px;
    font-weight: bold;
    cursor: pointer;
    box-shadow: 0 0 12px #00eaff88;
}

.user-dropdown {
    visibility: hidden;
    opacity: 0;
    position: absolute;
    right: 0;
    background-color: #101c2c;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    border-radius: 8px;
    overflow: hidden;
    z-index: 10;
    min-width: 160px;
    margin-top: 8px;
    text-align: left;
    transition: opacity 0.2s ease, visibility 0.2s ease;
}

.user-menu:hover .user-dropdown,
.user-dropdown:hover {
    visibility: visible;
    opacity: 1;
}

.user-dropdown a {
    display: block;
    padding: 10px 16px;
    text-decoration: none;
    color: #00eaff;
    background: #101c2c;
    font-weight: 600;
    transition: background 0.2s;
}

.user-dropdown a:hover {
    background-color: #00eaff;
    color: #101c2c;
}

/* Seiten-Wrapper */
.page-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Überschrift */
.uberschrieft {
    background-color: #fff;
    color: #00eaff;
    font-size: 44px;
    text-align: center;
    padding: 36px 20px 28px 20px;
    border-radius: 18px;
    box-shadow: 0 8px 24px rgba(34, 34, 59, 0.10);
    margin: 40px auto 30px auto;
    max-width: 800px;
    letter-spacing: 2px;
    transition: transform 0.2s, box-shadow 0.2s;
    text-shadow: 0 0 12px #00eaff55;
}

.uberschrieft:hover {
    transform: scale(1.02);
    box-shadow: 0 12px 32px rgba(34, 34, 59, 0.18);
}

/* Logo */
.VertexViennaLogo_Index1 {
    width: 200px;
    height: 200px;
    object-fit: cover;
    border-radius: 50%;
    box-shadow: 0 0 32px #00eaff88, 0 4px 16px rgba(34, 34, 59, 0.15);
    margin: 0 auto 30px auto;
    display: block;
    background: #0a1622;
    transition: box-shadow 0.2s, transform 0.2s;
}

.VertexViennaLogo_Index1:hover {
    box-shadow: 0 0 48px #00eaffcc, 0 8px 32px #00eaff55;
    transform: scale(1.07);
}

/* Hauptinhalt */
.content {
    font-size: 18px;
    line-height: 1.8;
    padding: 32px 26px;
    max-width: 800px;
    margin: 0 auto 30px auto;
    background: #fff;
    border-radius: 14px;
    box-shadow: 0 2px 8px rgba(34, 34, 59, 0.08);
    color: #1e293b;
    text-align: center;
}

/* Footer-Leiste (klassisch, nicht fixiert) */
.button_container {
    width: 100%;
    background: #101c2c;
    box-shadow: 0 -2px 32px #00eaff33;
    padding: 24px 0 16px 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 40px;
}

/* Button-Row in der Mitte */
.button_row {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 18px;
    padding: 0 12px;
    max-width: 1000px;
    margin-bottom: 10px;
}

/* Einzelne Buttons */
.button {
    padding: 14px 28px;
    font-size: 18px;
    color: #00eaff;
    background: #101c2c;
    border: 2px solid #00eaff;
    border-radius: 12px;
    text-decoration: none;
    box-shadow: 0 0 12px #00eaff55;
    transition: 
        background 0.2s,
        color 0.2s,
        box-shadow 0.2s,
        transform 0.2s;
    font-weight: 600;
    letter-spacing: 1px;
}

.button:hover {
    background: #00eaff;
    color: #101c2c;
    box-shadow: 0 0 32px #00eaffcc, 0 4px 16px #00eaff55;
    transform: scale(1.07);
}

/* Copyright-Text mit Neon-Glow */
.footer-text {
    font-size: 15px;
    color: #00eaff;
    text-align: center;
    animation: glow 2.5s ease-in-out infinite alternate;
    user-select: none;
    font-weight: 500;
    margin-top: 8px;
    letter-spacing: 1px;
}

@keyframes glow {
    from {
        text-shadow: 0 0 6px #00eaff55, 0 0 10px #00eaff33;
    }
    to {
        text-shadow: 0 0 14px #00eaffaa, 0 0 28px #00eaff88;
    }
}