/* ===== BASE ===== */

html {
    height: 100%;
}

body {
    margin: 0;
    display: flex;
    flex-direction: column;
    min-height: 100dvh;
    background: radial-gradient(circle at top, var(--app-bg-top), var(--app-bg) 60%);
    font-family: var(--app-font-family);
    color: var(--app-text-soft);
    overscroll-behavior: contain;
}

/* ===== CHAT ===== */

.chat {
    flex: 1;
    overflow-y: auto;
    padding: 15px 20px;
    display: flex;
    flex-direction: column;
    gap: 0px;
    font-size: 14px;

    scrollbar-width: thin;
    scrollbar-color: var(--chat-scrollbar) transparent;
}

/* Scroll Chrome */
.chat::-webkit-scrollbar {
    width: 6px;
}

.chat::-webkit-scrollbar-thumb {
    background: var(--chat-scrollbar);
    border-radius: 4px;
}

/* ===== MENSAGEM ===== */

.message {
    display: flex;
    flex-direction: column;
    margin-top: 0px;
}

/* Header (Nome + Data) */
.message-header {
    display: flex;
    align-items: baseline;
    gap: 8px;
    margin-bottom: 0px;
}

/* Nome maior */
.message-author {
    font-weight: 700;
    font-size: 15px;
}

/* Espaço extra quando muda o autor */
.message.break {
    margin-top: 8px;
}

.user-author {
    color: var(--chat-user-author);
}

.bot-author {
    color: var(--chat-bot-author);
}

/* Data + hora */
.message-datetime {
    font-size: 12px;
    color: var(--chat-datetime);
}

/* Texto */
.message-text {
    font-size: 14px;
    line-height: 1.2;
    margin-left: 18px;
    color: var(--chat-text);
    word-break: break-word;
}

/* ===== FORM ===== */

form {
    display: flex;
    padding: 15px;
    background: var(--form-bg);
    border-top: 1px solid var(--form-border);
}

form input {
    flex: 1;
    padding: 10px;
    border: 1px solid var(--input-border);
    border-radius: 6px;
    outline: none;
    background: var(--input-bg);
    color: var(--input-text);
    font-size: 16px;
}

form input::placeholder {
    color: var(--input-placeholder);
}

form input:focus {
    border-color: var(--input-focus-border);
    box-shadow: 0 0 0 2px var(--input-focus-ring);
}

form button {
    margin-left: 10px;
    padding: 10px 20px;
    background: var(--button-bg);
    border: none;
    border-radius: 6px;
    cursor: pointer;
    color: var(--button-text);
    font-weight: 600;
    transition: background 0.2s ease, transform 0.2s ease, opacity 0.2s ease;
}

form button:hover {
    background: var(--button-bg-hover);
}

form button:active {
    transform: translateY(1px);
}

/* ===== MOBILE AJUSTES ===== */

@media (max-width: 600px) {
    .chat {
        padding: 10px 12px;
        font-size: 13px;
    }

    .message-author {
        font-size: 14px;
    }

    .message-datetime {
        font-size: 11px;
    }

    .message-text {
        font-size: 13px;
    }

    form {
        padding: 10px;
    }

    form button {
        padding: 10px 14px;
    }
}