:root {
    --bg: #151a24;
    --panel: #1c2230;
    --panel-2: #232a3b;
    --line: #2e3648;
    --ink: #e8ebf2;
    --muted: #8791a8;
    --amber: #f5a524;
    --amber-dim: #3a3323;
    --square-light: #e9dfc9;
    --square-dark: #2c3547;
    --check: #e05252;
}

* {
    box-sizing: border-box;
}

/* Some visível pra leitor de tela, mas fora do fluxo visual — usado quando
   o título "de verdade" da página (h1, pra SEO/acessibilidade) não é o
   destaque visual principal da tela (ex.: o reprodutor de partida usa um
   h2 como título de cartão, e o h1 real fica aqui). */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

body {
    margin: 0;
    min-height: 100vh;
    background:
        radial-gradient(1100px 500px at 15% -10%, #1e2536 0%, transparent 60%),
        var(--bg);
    color: var(--ink);
    font-family: 'Inter', sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 32px 16px;
}

.app {
    width: 100%;
    max-width: 1360px;
}

.eyebrow {
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--amber);
    margin: 0 0 6px;
}

.eyebrow a {
    color: inherit;
    text-decoration: none;
}

.eyebrow a:hover {
    text-decoration: underline;
}

/* Linha de navegação com breadcrumb à esquerda e uma ação (ex.: "Editar")
   à direita — padrão usado no topo de telas que "pertencem" a um registro
   específico (uma partida, por exemplo). */
.crumb-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin: 0 0 10px;
}

.crumb-link {
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    letter-spacing: .06em;
    text-transform: uppercase;
    color: var(--amber);
    text-decoration: none;
    white-space: nowrap;
}

.crumb-link:hover {
    text-decoration: underline;
}

.crumb-action {
    font-family: 'Inter', sans-serif;
    font-size: 12px;
    color: var(--muted);
    text-decoration: none;
    border: 1px solid var(--line);
    padding: 3px 9px;
    border-radius: 6px;
    white-space: nowrap;
}

.crumb-action:hover {
    color: var(--amber);
    border-color: var(--amber);
}

h1 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 26px;
    margin: 0 0 4px;
    font-weight: 700;
}

/* ===================================================== tela do tabuleiro
 * Três regiões: coluna esquerda (info + análise), tabuleiro no centro
 * (SEMPRE 100% visível, sem rolagem — é a exigência #1 desta tela), coluna
 * direita (lista de lances). As duas colunas laterais são colapsáveis por
 * um "puxador" fixo na borda (.sidebar-handle) que encolhe/expande com
 * transição suave — nunca desaparecem de vez, viram só uma aba estreita.
 *
 * No mobile (uma coluna só), a ordem visual muda via grid-template-areas:
 * tabuleiro primeiro, depois análise (cabe junto numa tela de celular, que
 * é mais alta que larga), depois informações, depois lista de lances.
 */

.board-page {
    display: grid;
    gap: 16px;
    grid-template-columns: 280px 22px minmax(0, 1fr) 22px 280px;
    grid-template-areas:
        "info    handleL main handleR moves"
        "analysis handleL main handleR moves";
    align-items: start;
    transition: grid-template-columns .28s ease;
}

.board-page.is-left-collapsed {
    grid-template-columns: 0px 22px minmax(0, 1fr) 22px 280px;
}
.board-page.is-right-collapsed {
    grid-template-columns: 280px 22px minmax(0, 1fr) 22px 0px;
}
.board-page.is-left-collapsed.is-right-collapsed {
    grid-template-columns: 0px 22px minmax(0, 1fr) 22px 0px;
}

.side-card {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 16px;
    min-width: 0;
    overflow: hidden;
    transition: opacity .2s ease;
}

/* Largura FIXA (igual à trilha expandida do grid) nos três cards: quando a
   coluna colapsa (trilha 280px → 0), o conteúdo NÃO é re-diagramado numa
   coluna de 0px — sem isso, cada palavra quebrava pra uma linha própria, o
   card ficava altíssimo (invisível pela opacidade, mas ainda ocupando
   layout) e abria um vazio gigante entre o conteúdo e o rodapé. Com largura
   fixa o card apenas desliza pra debaixo do tabuleiro enquanto some no fade. */
.info-card {
    grid-area: info;
    width: 280px;
    justify-self: start;
}
.analysis-card {
    grid-area: analysis;
    width: 280px;
    justify-self: start;
}
.moves-card {
    grid-area: moves;
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-height: calc(100vh - 140px);
    width: 280px;
    /* Alinhado ao FIM da trilha: no colapso desliza pra debaixo do
       tabuleiro. Alinhado ao início, sairia pra fora da borda direita da
       página e criaria rolagem horizontal. */
    justify-self: end;
}

.board-page.is-left-collapsed .info-card,
.board-page.is-left-collapsed .analysis-card,
.board-page.is-right-collapsed .moves-card {
    opacity: 0;
    pointer-events: none;
}

.side-card-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 19px;
    margin: 4px 0 6px;
    font-weight: 700;
}

.side-card-title .vs {
    color: var(--muted);
    font-weight: 400;
}

.side-card-meta {
    color: var(--muted);
    font-size: 13px;
    margin: 0 0 10px;
}

.side-card-title-row {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: var(--muted);
    margin: 0 0 12px;
}

.sidebar-handle {
    grid-row: 1 / span 2;
    align-self: center;
    width: 22px;
    height: 56px;
    padding: 0;
    border-radius: 8px;
    border: 1px solid var(--line);
    background: var(--panel-2);
    color: var(--muted);
    font-size: 14px;
    cursor: pointer;
    position: sticky;
    top: calc(50vh - 28px);
}

.sidebar-handle--left { grid-area: handleL; }
.sidebar-handle--right { grid-area: handleR; }

.sidebar-handle:hover {
    border-color: var(--amber);
    color: var(--amber);
}

.board-main {
    grid-area: main;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 0;
    /* Posicionado pra pintar ACIMA dos cards laterais (que vêm depois no
       DOM) enquanto eles deslizam pra debaixo do tabuleiro no colapso. */
    position: relative;
}

@media (max-width: 900px) {
    .board-page {
        grid-template-columns: 1fr;
        grid-template-areas:
            "main"
            "analysis"
            "info"
            "moves";
        transition: none;
    }
    .sidebar-handle {
        display: none;
    }
    .info-card, .analysis-card, .moves-card {
        opacity: 1 !important;
        pointer-events: auto !important;
        width: auto;
        justify-self: stretch;
    }
    .moves-card {
        max-height: none;
    }
}

/* Tabuleiro */
.board-wrap {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 18px;
    width: 100%;
    max-width: 640px;
}

.board-frame {
    display: grid;
    grid-template-columns: 20px 1fr;
    grid-template-rows: 1fr 20px;
    gap: 4px;
}

.board {
    grid-column: 2;
    grid-row: 1;
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    grid-template-rows: repeat(8, 1fr);
    aspect-ratio: 1/1;
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid var(--line);
}

.rank-labels {
    grid-column: 1;
    grid-row: 1;
    display: grid;
    grid-template-rows: repeat(8, 1fr);
}

.rank-labels span {
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    color: var(--muted);
}

.file-labels {
    grid-column: 2;
    grid-row: 2;
    display: grid;
    grid-template-columns: repeat(8, 1fr);
}

.file-labels span {
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    color: var(--muted);
}

.sq {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: clamp(22px, 4.6vw, 40px);
    user-select: none;
}

.sq.light {
    background: var(--square-light);
}
.sq.dark {
    background: var(--square-dark);
}

.sq.last-move::after {
    content: "";
    position: absolute;
    inset: 0;
    background: var(--amber);
    opacity: .32;
}

.sq.king-check::after {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle, rgba(224, 82, 82, .75) 0%, rgba(224, 82, 82, 0) 72%);
}

.piece {
    position: relative;
    z-index: 1;
    line-height: 1;
    filter: drop-shadow(0 1px 1px rgba(0, 0, 0, .35));
}
.piece.w {
    color: #fbfaf6;
    -webkit-text-stroke: 1px #17181c;
}
.piece.b {
    color: #17181c;
}

.board-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 16px;
}

.board-controls button {
    width: 40px;
    height: 36px;
    border-radius: 8px;
    border: 1px solid var(--line);
    background: var(--panel-2);
    color: var(--ink);
    font-size: 15px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background .15s, border-color .15s, transform .1s;
}

.board-controls button:hover:not(:disabled) {
    border-color: var(--amber);
    color: var(--amber);
}

.board-controls button:active:not(:disabled) {
    transform: scale(.94);
}

.board-controls button:disabled {
    opacity: .35;
    cursor: not-allowed;
}

.board-controls .status {
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    color: var(--muted);
    min-width: 96px;
    text-align: center;
}

.board-controls-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 16px;
    width: 100%;
    max-width: 640px;
}

.board-controls-extra {
    display: flex;
    align-items: center;
    gap: 8px;
}

.icon-btn {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    border: 1px solid var(--line);
    background: var(--panel-2);
    color: var(--ink);
    font-size: 15px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background .15s, border-color .15s, transform .1s;
}

.icon-btn:hover {
    border-color: var(--amber);
    color: var(--amber);
}

.icon-btn:active {
    transform: scale(.94);
}

.icon-btn.active {
    background: var(--amber-dim);
    border-color: var(--amber);
}

.move-list {
    flex: 1;
    overflow-y: auto;
    display: grid;
    grid-template-columns: 28px 1fr 1fr;
    align-content: start;
    gap: 2px 6px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    padding-right: 4px;
    /* Sem barra de rolagem visível — ainda rola normal com mouse/toque
       (a lista se auto-rola até o lance ativo a cada navegação, ver
       renderMoveList em app.js). */
    scrollbar-width: none;
}

.move-list::-webkit-scrollbar {
    display: none;
}

.move-list .num {
    color: var(--muted);
    display: flex;
    align-items: center;
}

.move-btn {
    background: transparent;
    border: none;
    color: var(--ink);
    text-align: left;
    padding: 5px 7px;
    border-radius: 6px;
    cursor: pointer;
    font-family: inherit;
    font-size: inherit;
}

.move-btn:hover {
    background: var(--panel-2);
}

.move-btn.active {
    background: var(--amber-dim);
    color: var(--amber);
    font-weight: 600;
}

.move-btn.checkmate {
    color: var(--check);
}

.result-tag {
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    color: var(--muted);
    margin-top: 10px;
}

.result-tag b {
    color: var(--ink);
}

.fen-box {
    font-family: 'JetBrains Mono', monospace;
    font-size: 10.5px;
    color: var(--muted);
    word-break: break-all;
    border-top: 1px solid var(--line);
    padding-top: 10px;
}

/* Caixinha de Análise */
.analysis-box {
    background: var(--panel-2);
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 12px 14px;
    font-family: 'Inter', sans-serif;
    font-size: 13px;
    min-height: 60px;
    margin-top: 16px;
    line-height: 1.5;
}

.analysis-box .title {
    color: var(--muted);
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: .08em;
    margin-bottom: 8px;
    font-family: 'JetBrains Mono', monospace;
}

.analysis-box .best-move {
    color: var(--amber);
    font-weight: bold;
    font-size: 15px;
}

.analysis-box .score {
    color: var(--ink);
    font-weight: bold;
}

.analysis-box .score.positive {
    color: #4caf50;
}

.analysis-box .score.negative {
    color: #e05252;
}

.analysis-box .analysis-detail {
    color: var(--muted);
    font-size: 10.5px;
    margin-top: 3px;
}

.analysis-box .loading {
    color: var(--muted);
    animation: pulse 1.5s ease-in-out infinite;
}

.analysis-box .move-info {
    color: var(--amber);
    font-weight: bold;
    font-size: 14px;
    font-family: 'JetBrains Mono', monospace;
}

.analysis-box details {
    font-size: 12px;
}

.analysis-box details summary {
    color: var(--muted);
    cursor: pointer;
    user-select: none;
    font-size: 11px;
}

.analysis-box details summary:hover {
    color: var(--ink);
}

.analysis-box details div {
    color: var(--ink);
}

@keyframes pulse {
    0%,
    100% {
        opacity: 1;
    }
    50% {
        opacity: .3;
    }
}

/* Barra de avaliação */
.evaluation-bar-container {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 10px 14px;
    margin-top: 10px;
}

.evaluation-bar-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
}

.evaluation-bar {
    flex: 1;
    height: 24px;
    background: #2c3547;
    border-radius: 12px;
    overflow: hidden;
    position: relative;
    display: flex;
}

.evaluation-bar-fill {
    height: 100%;
    transition: width 0.3s ease;
    border-radius: 12px;
}

.evaluation-bar-fill.white {
    background: linear-gradient(90deg, #e8ebf2, #ffffff);
}

.evaluation-bar-fill.black {
    background: linear-gradient(90deg, #2c3547, #17181c);
}

.evaluation-bar-fill.neutral {
    background: #ff9800;
}

.evaluation-text {
    font-family: 'JetBrains Mono', monospace;
    font-size: 14px;
    font-weight: bold;
    min-width: 60px;
    text-align: center;
}

.evaluation-text.white {
    color: #e8ebf2;
}

.evaluation-text.black {
    color: #e05252;
}

.evaluation-text.neutral {
    color: #ff9800;
}

.evaluation-label {
    font-size: 10px;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 4px;
    text-align: center;
}

.evaluation-wdl {
    display: flex;
    justify-content: space-around;
    font-size: 11px;
    color: var(--muted);
    margin-top: 4px;
    padding: 0 10px;
}

.evaluation-wdl span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.evaluation-wdl .win {
    color: #4caf50;
}

.evaluation-wdl .draw {
    color: #ff9800;
}

.evaluation-wdl .loss {
    color: #e05252;
}

/* Cores para classificação de movimentos */
.move-quality-excellent {
    color: #4caf50;
    font-weight: bold;
}

.move-quality-good {
    color: #8bc34a;
    font-weight: bold;
}

.move-quality-inaccuracy {
    color: #ff9800;
    font-weight: bold;
}

.move-quality-mistake {
    color: #f44336;
    font-weight: bold;
}

.move-quality-blunder {
    color: #d32f2f;
    font-weight: bold;
}

details summary {
    list-style: none;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    cursor: pointer;
}

details summary::-webkit-details-marker {
    display: none;
}

details summary::before {
    content: '▶';
    font-size: 10px;
    transition: transform 0.2s;
}

details[open] summary::before {
    transform: rotate(90deg);
}
/* ================= Novidades: modo estudo, relatório, tags de qualidade ================= */

.opening-tag {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11.5px;
    color: var(--amber);
    margin: -14px 0 20px;
}

/* Overlay do Modo Estudo */
.guess-overlay {
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    text-align: center;
    background: var(--panel-2);
    border: 1px dashed var(--amber);
    border-radius: 10px;
    padding: 16px;
    margin-top: 14px;
    width: 100%;
    max-width: 640px;
}

.guess-overlay .guess-text {
    font-size: 13.5px;
    color: var(--ink);
    line-height: 1.5;
}

.guess-reveal-btn {
    background: var(--amber);
    color: #1c1400;
    border: none;
    font-weight: 700;
    font-size: 13px;
    padding: 9px 18px;
    border-radius: 8px;
    cursor: pointer;
}

.guess-reveal-btn:hover {
    filter: brightness(1.08);
}

/* Cores de qualidade de lance na lista (chave usada pelo app.js) */
.move-btn.quality-best {
    box-shadow: inset 3px 0 0 0 #f5a524;
}
.move-btn.quality-excellent {
    box-shadow: inset 3px 0 0 0 #4caf50;
}
.move-btn.quality-good {
    box-shadow: inset 3px 0 0 0 #8bc34a;
}
.move-btn.quality-inaccuracy {
    box-shadow: inset 3px 0 0 0 #ff9800;
    color: #ff9800;
}
.move-btn.quality-mistake {
    box-shadow: inset 3px 0 0 0 #f44336;
    color: #f44336;
}
.move-btn.quality-blunder {
    box-shadow: inset 3px 0 0 0 #d32f2f;
    color: #d32f2f;
    font-weight: 700;
}

/* Relatório da partida */
.report-header {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 10px;
}

.report-note {
    color: var(--muted);
    font-weight: 400;
    font-size: 11px;
    font-family: 'JetBrains Mono', monospace;
}

.report-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

@media (max-width: 500px) {
    .report-grid {
        grid-template-columns: 1fr;
    }
}

.report-side {
    background: var(--panel-2);
    border-radius: 8px;
    padding: 12px;
}

.report-side-title {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--muted);
    margin-bottom: 6px;
}

.report-accuracy {
    font-family: 'JetBrains Mono', monospace;
    font-size: 22px;
    font-weight: 700;
    color: var(--amber);
    margin-bottom: 10px;
}

.report-accuracy span {
    font-size: 10px;
    color: var(--muted);
    font-weight: 400;
    display: block;
    text-transform: uppercase;
    letter-spacing: .04em;
}

.report-row {
    display: flex;
    justify-content: space-between;
    font-size: 12.5px;
    padding: 3px 0;
    border-top: 1px solid var(--line);
}

.report-row:first-of-type {
    border-top: none;
}