.chat-page {
    min-height: 75vh;
    padding: 45px 0 80px;
}

.back-link {
    display: inline-block;
    color: var(--muted);
    margin-bottom: 25px;
    font-size: .85rem;
}

.back-link:hover {
    color: var(--accent);
}

.chat-panel {
    max-width: 850px;
    margin-inline: auto;
    padding: 35px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 20px;
}

.chat-heading {
    display: flex;
    align-items: center;
    gap: 18px;
    margin-bottom: 20px;
}

.chat-avatar {
    display: grid;
    place-items: center;
    width: 58px;
    height: 58px;
    flex-shrink: 0;
    font-size: 30px;
    border-radius: 16px;
    background: linear-gradient(145deg, #2a3543, #11161f);
    box-shadow:
        inset 1px 1px 2px rgba(255, 255, 255, .15),
        0 8px 18px rgba(0, 0, 0, .3);
}

.chat-heading .eyebrow {
    margin-bottom: 8px;
    font-size: .62rem;
}

.chat-heading h1 {
    font-size: clamp(1.6rem, 4vw, 2.3rem);
    margin: 0;
}

.chat-description {
    color: var(--muted);
    font-size: .9rem;
    margin-bottom: 28px;
}

.chat-messages {
    display: grid;
    gap: 18px;
    margin-bottom: 30px;
}

.message {
    padding: 20px;
    border: 1px solid var(--border);
    border-radius: 12px;
}

.message h2 {
    margin-bottom: 12px;
    font: .72rem var(--mono);
    letter-spacing: .04em;
    text-transform: uppercase;
}

.message-user {
    margin-left: 35px;
    background: #17211d;
    border-color: #324a3c;
}

.message-user h2 {
    color: var(--accent);
}

.message-ai {
    margin-right: 35px;
    background: #151a25;
}

.message-ai h2 {
    color: var(--purple);
}

.message-text {
    white-space: pre-wrap;
    overflow-wrap: anywhere;
    font-size: .95rem;
    line-height: 1.8;
}

.chat-form {
    border-top: 1px solid var(--border);
    padding-top: 25px;
}

.chat-form textarea {
    min-height: 125px;
}

.chat-form-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 15px;
    margin-top: 18px;
}

.chat-form-footer p {
    color: var(--muted);
    font-size: .75rem;
    margin: 0;
}

@media (max-width: 640px) {
    .chat-panel {
        padding: 22px;
    }

    .chat-heading {
        align-items: flex-start;
        gap: 12px;
    }

    .chat-avatar {
        width: 45px;
        height: 45px;
        font-size: 25px;
    }

    .message-user,
    .message-ai {
        margin-inline: 0;
    }

    .chat-form-footer .button {
        width: 100%;
    }
}