/* ── Promotion dialog ───────────────────────────────────────────────── */
.promotion-dialog {
    display: none;
    position: fixed; inset: 0;
    background: var(--scrim);
    z-index: 200;
    align-items: center;
    justify-content: center;
}
.promotion-dialog.is-visible { display: flex; }
.promotion-tray {
    background: var(--surface-3);
    border: 1px solid var(--border-2);
    border-radius: var(--r-lg);
    padding: 1.125rem 1.25rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.875rem;
    box-shadow: var(--shadow);
}
.promotion-tray__title {
    font-size: var(--text-xs); font-weight: 700;
    text-transform: uppercase; letter-spacing: 0.12em;
    color: var(--text-muted);
    user-select: none;
}
.promotion-tray__pieces { display: flex; gap: var(--space-2); }
.promotion-piece-btn {
    width: 3.75rem; height: 3.75rem;
    background: var(--tray-bg);
    border: 1px solid var(--border);
    border-radius: var(--r-md);
    cursor: pointer; padding: 0.375rem;
    display: flex; align-items: center; justify-content: center;
    transition: background var(--tr), border-color var(--tr), transform var(--tr);
}
.promotion-piece-btn:hover        { background: var(--tray-bg-dark); border-color: var(--gold-dim); }
.promotion-piece-btn:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }
.promotion-piece-btn:active       { transform: scale(0.94); }
.promotion-piece-btn img {
    width: 2.75rem; height: 2.75rem;
    object-fit: contain;
    pointer-events: none; user-select: none;
}
@media (prefers-reduced-motion: reduce) { .promotion-piece-btn { transition: none; } }

/* ── PGN import dialog ──────────────────────────────────────────────── */
.pgn-dialog {
    display: none;
    position: fixed; inset: 0;
    background: var(--scrim);
    z-index: 200;
    align-items: center;
    justify-content: center;
    padding: var(--space-5);
}
.pgn-dialog.is-open { display: flex; }
.pgn-dialog__inner {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--r-lg);
    box-shadow: var(--shadow);
    width: 100%; max-width: 35rem;
    max-height: 80vh;
    display: flex; flex-direction: column;
    overflow: hidden;
}
.pgn-dialog__header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 0.875rem 1.125rem 0.625rem;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}
.pgn-dialog__title { font-size: var(--text-sm); font-weight: 600; }
.pgn-dialog__close {
    background: none; border: none; color: var(--text-dim);
    font-size: var(--text-lg); line-height: 1; padding: 0.1875rem 0.4375rem;
    border-radius: var(--r-sm);
    cursor: pointer;
    transition: background var(--tr), color var(--tr);
}
.pgn-dialog__close:hover { background: var(--surface-2); color: var(--text); }
.pgn-dialog__textarea {
    flex-shrink: 0;
    margin: var(--space-3) 1.125rem 0;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: var(--r-sm);
    color: var(--text);
    font-family: var(--font-mono);
    font-size: var(--text-xs); line-height: 1.5;
    padding: var(--space-2) 0.625rem;
    resize: vertical; outline: none;
    transition: border-color var(--tr);
}
.pgn-dialog__textarea:focus { border-color: var(--border-2); }
.pgn-dialog__error { font-size: var(--text-xs); color: var(--loss); padding: var(--space-3) 1.125rem 0; }
.pgn-dialog__error:empty { display: none; }
.pgn-dialog__actions {
    display: flex;
    flex-shrink: 0;
    padding: 1.125rem;
}
.pgn-dialog__moves {
    flex: 1; overflow-y: auto;
    padding: var(--space-1) 1.125rem var(--space-4);
    display: flex; flex-wrap: wrap;
    gap: 0.1875rem 0.375rem;
    align-content: flex-start;
}
.pgn-move-btn {
    background: var(--surface-2);
    border: 1px solid transparent;
    border-radius: var(--r-sm);
    color: var(--text-dim);
    font-size: var(--text-xs); font-family: var(--font-mono);
    padding: 0.1875rem 0.4375rem;
    cursor: pointer;
    transition: background var(--tr), color var(--tr);
}
.pgn-move-btn:hover { background: var(--border); color: var(--text); }