@import url('https://fonts.googleapis.com/css2?family=Varela+Round&display=swap');

body {
    margin: 0;
    min-height: 100vh;
    background: #ffffff;
    color: #111;
    font-family: "Varela Round", sans-serif;
}

.back-button {
    position: fixed;
    top: 16px;
    left: 16px;
    text-decoration: none;
    font-size: 1.25rem;
    padding: 0.9rem 1.8rem;
    border-radius: 0.75rem;
    background: #ffffff;
    color: #111;
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.18);
    transition: transform 150ms ease, box-shadow 150ms ease, background 150ms ease;
}

.back-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 28px rgba(0, 0, 0, 0.18);
    background: #f7f7f7;
}

.back-button:active {
    transform: translateY(0);
    box-shadow: 0 8px 18px rgba(0, 0, 0, 0.2);
}

.back-button:focus-visible {
    outline: 3px solid rgba(17, 17, 17, 0.3);
    outline-offset: 3px;
}

h1 {
    text-align: center;
    font-size: 2.5rem;
    margin: 5rem 1rem 0.5rem;
}

p {
    text-align: center;
    margin: 0 1rem 1.5rem;
    font-size: 1.1rem;
}

.chatroom-frame {
    max-width: 900px;
    margin: 0 auto 5rem;
    padding: 0;
    background: #000000;
    border-radius: 0.75rem;
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.12);
    overflow: hidden;
}

#tlkio {
    width: 100%;
    height: 80vh;
    min-height: 720px;
    border: 0;
    display: block;
    background: #000000;
}

.apologie1 {
    text-align: center;
    bottom: 0;
    margin-bottom: 1rem;
}

.chatroom-credit {
    text-align: right;
    margin-top: 0.5rem;
}

.chatroom-credit a {
    color: #111;
    text-decoration: none;
    font-size: 0.9rem;
    opacity: 0.6;
}

.chatroom-credit a:hover {
    opacity: 1;
}