/* =========================================================
   Chatbot — tela de conversa com o agente (ocupa a altura da janela)
   ========================================================= */

.page-chat {
    height: 100vh;
    height: 100dvh;
    min-height: 0;
    overflow: hidden;
}

.page-chat main {
    position: relative;
    isolation: isolate;
    display: flex;
    min-height: 0;
}

/* Aura atrás da conversa: grade técnica + brilho. */
.page-chat main::before,
.page-chat main::after {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    pointer-events: none;
}

.page-chat main::before {
    background:
        radial-gradient(ellipse 45% 55% at 50% 0%, var(--glow-a), transparent 70%),
        radial-gradient(ellipse 35% 40% at 85% 100%, var(--glow-b), transparent 70%);
}

.page-chat main::after {
    background-image:
        linear-gradient(var(--grid) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid) 1px, transparent 1px);
    background-size: 64px 64px;
    background-position: center top;
    -webkit-mask-image: radial-gradient(ellipse 60% 50% at 50% 0%, #000 10%, transparent 75%);
    mask-image: radial-gradient(ellipse 60% 50% at 50% 0%, #000 10%, transparent 75%);
}

.chat {
    display: grid;
    grid-template-rows: auto minmax(0, 1fr) auto;
    flex: 1;
    width: 100%;
    max-width: 920px;
    min-height: 0;
    margin-inline: auto;
    padding-inline: var(--gutter);
}

/* ---------- Cabeçalho ---------- */

.chat__head {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 8px 16px;
    padding-block: 20px;
    border-bottom: 1px solid var(--line);
}

.chat__agent {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* Orbe do agente: gradiente cônico girando por baixo de um brilho fixo. */
.agent-orb {
    position: relative;
    flex: none;
    width: 44px;
    height: 44px;
    overflow: hidden;
    border-radius: 50%;
    box-shadow: 0 0 32px -4px var(--glow-a);
}

.agent-orb::before,
.agent-orb::after {
    content: "";
    position: absolute;
    border-radius: 50%;
}

.agent-orb::before {
    inset: -25%;
    background: conic-gradient(from 0deg, var(--accent), #6fb6ff, var(--accent-2), var(--accent));
    filter: blur(4px);
    animation: spin 6s linear infinite;
}

.agent-orb::after {
    inset: 0;
    background: radial-gradient(circle at 32% 28%, rgba(255, 255, 255, 0.6), transparent 40%);
}

@keyframes spin {
    to {
        transform: rotate(1turn);
    }
}

.chat__title {
    font-family: var(--font-display);
    font-size: 1.625rem;
    font-weight: 400;
    line-height: 1.1;
}

.chat__meta {
    display: flex;
    align-items: center;
    gap: 20px;
}

.chat__reset {
    transition: color 0.3s;
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    border-bottom: 1px solid currentColor;
}

/* ---------- Log de mensagens ---------- */

.chat__log {
    display: flex;
    flex-direction: column;
    gap: 28px;
    padding-block: 32px;
    overflow-y: auto;
    overscroll-behavior: contain;
}

.msg {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-width: min(640px, 90%);
}

.msg__label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--muted);
    font-family: var(--font-mono);
    font-size: 10.5px;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.msg--agent .msg__label::before {
    content: "";
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--gradient);
    box-shadow: 0 0 10px var(--glow-a);
}

.msg__text {
    white-space: pre-wrap;
    overflow-wrap: anywhere;
}

.msg--agent .msg__text {
    font-family: var(--font-display);
    font-size: 1.3125rem;
    line-height: 1.45;
}

.msg--user {
    align-self: flex-end;
    align-items: flex-end;
}

.msg--user .msg__text {
    padding: 14px 18px;
    border: 1px solid var(--line);
    border-radius: 14px 14px 4px 14px;
    background: var(--surface);
    font-size: 15px;
    line-height: 1.6;
}

.msg--error .msg__text {
    color: var(--danger);
}

.msg--welcome .msg__text {
    font-size: clamp(1.5rem, 3vw, 2rem);
    line-height: 1.25;
}

.typing {
    display: inline-flex;
    gap: 6px;
    padding-block: 10px;
}

.typing span {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
    animation: typing 1.2s ease-in-out infinite;
}

.typing span:nth-child(2) {
    animation-delay: 0.15s;
}

.typing span:nth-child(3) {
    animation-delay: 0.3s;
}

@keyframes typing {
    0%, 60%, 100% {
        opacity: 0.2;
        transform: translateY(0);
    }

    30% {
        opacity: 1;
        transform: translateY(-3px);
    }
}

/* ---------- Sugestões ---------- */

.chat__suggestions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.chat__suggestions[hidden] {
    display: none;
}

.chip {
    padding: 8px 15px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: color-mix(in srgb, var(--surface) 60%, transparent);
    color: var(--ink-soft);
    font-size: 13px;
    transition: border-color 0.2s, background-color 0.2s, color 0.2s;
}

.chip:hover {
    border-color: var(--accent);
    background: color-mix(in srgb, var(--accent) 10%, transparent);
    color: var(--ink);
}

/* ---------- Composer ---------- */

.chat__bottom {
    display: grid;
    gap: 16px;
    padding-bottom: 16px;
}

.chat__composer {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: end;
    gap: 16px;
    padding: 8px 8px 8px 18px;
    border: 1px solid var(--line-strong);
    border-radius: 14px;
    background: color-mix(in srgb, var(--surface) 75%, transparent);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    transition: border-color 0.3s, box-shadow 0.4s;
}

.chat__composer .btn {
    min-height: 44px;
    border-radius: 9px;
}

.chat__input {
    width: 100%;
    max-height: 180px;
    padding: 12px 0;
    border: 0;
    background: transparent;
    font-size: 16px;
    line-height: 1.5;
    resize: none;
}

.chat__input:focus {
    outline: none;
}

.chat__composer:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 15%, transparent), 0 20px 60px -24px var(--glow-a);
}

.chat__hint {
    color: var(--muted);
    font-family: var(--font-mono);
    font-size: 11px;
}

@media (hover: none) {
    .chat__hint {
        display: none;
    }
}

@media (max-width: 600px) {
    .chat__composer .btn {
        padding: 0 18px;
    }
}

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