/** O shell: rail, sidebar (canais + participantes + painel de voz) e coluna principal. */

.app {
    display: grid;
    grid-template-columns: var(--rail-w) var(--sidebar-w) minmax(0, 1fr);
    /* dvh e não vh: no mobile a barra de endereço faz o vh mentir, e era isso que cortava
       a barra de controles embaixo. */
    height: 100dvh;
}

/* ---------------------------------------------------------------- rail */

.rail {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-top: 12px;
    background: var(--bg-rail);
}

.rail__logo {
    display: grid;
    place-items: center;
    width: 48px;
    height: 48px;
    border-radius: var(--r-lg);
    background: var(--accent);
    color: #fff;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.03em;
}

/* ---------------------------------------------------------------- sidebar */

.sidebar {
    display: grid;
    grid-template-rows: auto minmax(0, 1fr) auto;
    min-height: 0;
    background: var(--bg-sidebar);
}

.sidebar__header {
    display: flex;
    align-items: center;
    height: 48px;
    padding: 0 16px;
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.2);
}

.sidebar__title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-strong);
}

.sidebar__scroll {
    overflow-y: auto;
    padding: 12px 8px;
    min-height: 0;
}

.sidebar__label {
    padding: 0 8px;
    margin: 0 0 4px;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.sidebar__notice {
    display: flex;
    gap: 6px;
    margin: 12px 8px 0;
    font-size: 0.75rem;
    color: var(--warn);
}

/* ---------------------------------------------------------------- lista de canais */

.channel-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.channel {
    position: relative;
}

/* Escondidos até o hover, pra não competir visualmente com o badge de não-lida - mesmo
   padrão do Discord: editar/apagar sala não é uma ação do dia a dia. */
.channel__actions {
    display: none;
    position: absolute;
    top: 3px;
    right: 4px;
    gap: 2px;
}

.channel:hover .channel__actions {
    display: flex;
}

.channel__edit,
.channel__delete {
    display: grid;
    place-items: center;
    width: 22px;
    height: 22px;
    border: none;
    border-radius: var(--r-sm);
    background: var(--bg-elevated);
    color: var(--text-muted);
}

.channel__edit:hover {
    color: var(--interactive-hover);
    background: var(--bg-hover);
}

.channel__delete:hover {
    color: var(--danger);
    background: rgba(218, 55, 60, 0.12);
}

.sidebar__add-room {
    display: flex;
    align-items: center;
    gap: 6px;
    width: 100%;
    margin-top: 4px;
    padding: 6px 8px;
    border: none;
    border-radius: var(--r-sm);
    background: transparent;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.sidebar__add-room:hover {
    background: var(--bg-hover);
    color: var(--interactive-hover);
}

.channel__link {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 8px;
    border-radius: var(--r-sm);
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.94rem;
}

.channel__link:hover {
    background: var(--bg-hover);
    color: var(--interactive-hover);
}

.channel--active > .channel__link {
    background: var(--bg-active);
    color: var(--text-strong);
    font-weight: 500;
}

.channel__icon {
    width: 20px;
    text-align: center;
    font-size: 0.95rem;
}

.channel__name {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.channel__unread {
    min-width: 18px;
    padding: 0 5px;
    border-radius: var(--r-pill);
    background: var(--danger);
    color: #fff;
    font-size: 0.7rem;
    font-weight: 700;
    text-align: center;
    line-height: 18px;
}

/* Spinner na própria linha do canal, em vez de um overlay de página inteira: num shell
   que nunca recarrega, escurecer a tela toda pra entrar num canal seria um exagero. */
.channel__spinner {
    display: none;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 2px solid var(--bg-elevated);
    border-top-color: var(--accent);
    animation: spin 0.7s linear infinite;
}

.channel--connecting .channel__spinner {
    display: block;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ---------------------------------------------------------------- participantes */

.channel__members {
    list-style: none;
    margin: 0;
    padding: 0;
}

.channel--populated .channel__members {
    padding: 2px 0 6px;
}

.member {
    display: flex;
    align-items: center;
    gap: 8px;
    /* 22px de recuo alinha o avatar com o nome do canal, não com o ícone dele. */
    margin-left: 22px;
    padding: 3px 8px;
    border-radius: var(--r-sm);
    cursor: pointer;
    color: var(--text-muted);
    font-size: 0.86rem;
}

.member:hover {
    background: var(--bg-hover);
    color: var(--interactive-hover);
}

.member__avatar {
    display: block;
    border-radius: 50%;
    /* O anel de "falando" mora aqui, e box-shadow (em vez de border) porque não muda o
       tamanho do elemento - então nada se mexe quando alguém começa a falar. */
    box-shadow: 0 0 0 0 transparent;
    transition: box-shadow 0.1s ease;
}

.member--speaking .member__avatar {
    box-shadow: 0 0 0 2px var(--ok);
}

.member--speaking {
    color: var(--text-strong);
}

.member__name {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.member__badge {
    display: grid;
    place-items: center;
    color: var(--danger);
}

/* ---------------------------------------------------------------- painel de voz */

.voice-panel {
    padding: 8px;
    background: var(--bg-panel);
}

.voice-panel__status {
    display: flex;
    flex-direction: column;
    padding: 2px 8px 6px;
    min-height: 1.2rem;
}

.voice-panel__state {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
}

.voice-panel__state[data-state="connected"] {
    color: var(--ok);
}

.voice-panel__state[data-state="reconnecting"],
.voice-panel__state[data-state="joining"] {
    color: var(--warn);
}

.voice-panel__channel {
    font-size: 0.8rem;
    color: var(--text);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.voice-panel__me {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 4px 8px;
    border-radius: var(--r-sm);
}

.voice-panel__me:hover {
    background: var(--bg-hover);
}

.voice-panel__avatar {
    display: block;
}

.voice-panel__name {
    flex: 1;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-strong);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.voice-panel__actions {
    display: flex;
    gap: 2px;
    padding-top: 4px;
}

/* ---------------------------------------------------------------- coluna principal */

.main {
    display: grid;
    grid-template-rows: auto minmax(0, 1fr) auto;
    min-width: 0;
    min-height: 0;
    background: var(--bg-main);
}

.main__header {
    display: flex;
    align-items: center;
    gap: 8px;
    height: 48px;
    padding: 0 16px;
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.2);
}

.main__menu {
    display: none; /* só aparece quando a sidebar vira gaveta */
}

.main__chat {
    display: grid;
    position: relative;
}

.main__chat.is-active {
    color: #fff;
    background: var(--accent);
}

.main__chat-unread {
    position: absolute;
    top: -3px;
    right: -5px;
    min-width: 17px;
    padding: 0 4px;
    border: 2px solid var(--bg-main);
    border-radius: var(--r-pill);
    background: var(--danger);
    color: #fff;
    font-size: 0.62rem;
    font-weight: 700;
    line-height: 15px;
    text-align: center;
}

.main__icon {
    font-size: 1rem;
}

.main__title {
    flex: 1;
    font-size: 1rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.conn {
    font-size: 0.78rem;
    color: var(--warn);
}

.content {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: minmax(0, 1fr);
    min-height: 0;
    position: relative;
}

/* Monitores largos aproveitam melhor a proporção 16:9 com o chat numa coluna lateral. */
@media (min-width: 901px) {
    .content:has(> .stage:not(.hidden)):not(.content--chat-hidden) {
        grid-template-columns: minmax(0, 1fr) minmax(300px, var(--chat-width, 360px));
    }
}

/* ---------------------------------------------------------------- controles da chamada */

.call-controls {
    display: flex;
    justify-content: center;
    gap: 12px;
    padding: 12px;
    background: var(--bg-panel);
    box-shadow: 0 -1px 0 rgba(0, 0, 0, 0.2);
}

.control-btn {
    display: grid;
    place-items: center;
    width: 48px;
    height: 48px;
    border: none;
    border-radius: 50%;
    background: var(--bg-elevated);
    color: var(--text);
    transition: background 0.12s ease;
}

.control-btn:hover:not(:disabled) {
    background: #4a4d55;
}

.control-btn.is-active {
    background: var(--accent);
    color: #fff;
}

.control-btn.is-active:hover {
    background: var(--accent-hover);
}

.control-btn--danger {
    background: var(--danger);
    color: #fff;
}

.control-btn--danger:hover:not(:disabled) {
    background: var(--danger-hover);
}

/* ---------------------------------------------------------------- gaveta / responsivo */

.sidebar-backdrop {
    display: none;
}

@media (max-width: 900px) {
    .app {
        grid-template-columns: minmax(0, 1fr);
    }

    .rail {
        display: none;
    }

    /* A sidebar sai do grid e vira gaveta. Fora da tela por transform, e não por
       display:none, pra que a transição funcione e o conteúdo já esteja renderizado. */
    .sidebar {
        position: fixed;
        inset: 0 auto 0 0;
        width: min(var(--sidebar-w), 82vw);
        z-index: var(--z-sidebar);
        transform: translateX(-100%);
        transition: transform 0.18s ease;
    }

    .sidebar--open {
        transform: translateX(0);
    }

    .main__menu {
        display: grid;
    }

    .sidebar-backdrop {
        display: block;
        position: fixed;
        inset: 0;
        z-index: calc(var(--z-sidebar) - 1);
        background: rgba(0, 0, 0, 0.6);
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.18s ease;
    }

    /* :has no ancestral em vez de seletor de irmão: no DOM o backdrop vem ANTES da
       sidebar (pra ficar por baixo dela sem depender só de z-index), então "+" e "~"
       não alcançariam. */
    .app:has(.sidebar--open) .sidebar-backdrop {
        opacity: 1;
        pointer-events: auto;
    }

    /* Em tablets o palco e o chat continuam empilhados e podem ser redimensionados. */
    .content:has(> .stage:not(.hidden)):not(.content--chat-hidden) {
        grid-template-rows: minmax(0, var(--content-split, 50%)) minmax(0, 1fr);
    }
}

@media (max-width: 600px) {
    /* Em telefone, o chat não disputa altura com uma transmissão: abre sobre o palco. */
    .content:has(> .stage:not(.hidden)):not(.content--chat-hidden) {
        grid-template-rows: minmax(0, 1fr);
    }

    .content:not(.content--chat-open):has(> .stage:not(.hidden)) > .chat {
        display: none;
    }

    .content.content--chat-open > .chat {
        display: flex;
        position: absolute;
        inset: 8px;
        z-index: var(--z-stage-overlay);
        border-radius: var(--r-md);
        overflow: hidden;
        background: var(--bg-main);
        box-shadow: var(--shadow-float);
    }

    .control-btn {
        width: 44px;
        height: 44px;
    }

    .call-controls {
        gap: 8px;
        padding: 10px;
    }
}

/* ---------------------------------------------------------------- redimensionar / minimizar chat */

/* No desktop o divisor é vertical e acompanha a largura do chat lateral. */
.content__resizer {
    display: none;
    position: absolute;
    top: 0;
    right: calc(var(--chat-width, 360px) - 5px);
    bottom: 0;
    width: 10px;
    cursor: col-resize;
    z-index: var(--z-stage-overlay);
    touch-action: none;
}

.content__resizer::after {
    content: '';
    position: absolute;
    left: 50%;
    top: 50%;
    width: 4px;
    height: 36px;
    transform: translate(-50%, -50%);
    border-radius: var(--r-pill);
    background: var(--bg-elevated);
}

/* O estado explícito impede que uma regra de :has mais específica deixe uma linha vazia. */
.content:has(> .stage:not(.hidden)):not(.content--chat-hidden) .content__resizer {
    display: block;
}

.content.content--chat-hidden {
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: minmax(0, 1fr);
}

.content.content--chat-hidden .content__resizer {
    display: none;
}

@media (max-width: 900px) {
    .content__resizer {
        inset: var(--content-split, 50%) 0 auto;
        width: auto;
        height: 10px;
        margin-top: -5px;
        cursor: row-resize;
    }

    .content__resizer::after {
        width: 36px;
        height: 4px;
    }
}

@media (max-width: 600px) {
    .content__resizer {
        display: none !important;
    }
}