.history-container { flex: 1; display: flex; flex-direction: column; overflow: hidden; background: var(--bg-input); }
.history-header { display: grid; grid-template-columns: 40px 1fr 1fr; background: var(--bg-header-tabs); padding: 8px 10px; font-size: 0.75rem; font-weight: bold; color: var(--text-muted); text-transform: uppercase; text-align: center; border-bottom: 1px solid var(--border-lighter); flex-shrink: 0; }
.history-list {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 0;
}

.move-row { display: grid; grid-template-columns: 40px 1fr 1fr; padding: 6px 14px 6px 10px; font-family: 'Roboto Mono', monospace; font-size: 0.95rem; color: var(--text-main); border-bottom: 1px solid var(--border-lighter); align-items: center; }
.move-row:nth-child(even) { background: var(--border-lighter); }
.move-row .move-num { text-align: center; color: var(--text-muted); font-size: 0.8em; }
.move-row .move-not { text-align: center; display: block; width: 92%; margin: 0 auto; }
.move-wrapper { display: inline-flex; align-items: center; gap: 4px; margin: 3px 6px 3px 2px; }
.move-num { color: var(--text-muted); font-size: 0.8em; font-family: monospace; user-select: none; }

.variation-block {
    display: block;
    margin: 4px 10px 4px 12px;
    padding: 4px 0 4px 10px;
    border-left: 2px solid var(--border-color);
    background: var(--bg-input);
    border-radius: 0 4px 4px 0;
    box-sizing: border-box;
}
.variation-line { display: flex; flex-wrap: wrap; align-items: center; margin-bottom: 2px; }

.move-not { cursor: pointer; padding: 2px 6px; border-radius: 4px; transition: all 0.15s ease-in-out; border: 1px solid transparent; }
.move-not:hover { background: var(--border-light); color: var(--text-pure); }
.move-not.active { background-color: var(--board-light); color: var(--bg-panel); font-weight: 700; border: 1px solid var(--board-dark); box-shadow: 0 2px 4px rgba(0,0,0,0.2); }
.variation-line .move-not:not(.active) { color: var(--text-dim); }

.controls-footer { padding: 15px; background: var(--bg-header-tabs); border-top: 1px solid var(--border-lighter); display: flex; flex-direction: column; gap: 10px; flex-shrink: 0; border-radius: 0 0 12px 12px; }
.nav-buttons { display: flex; justify-content: center; gap: 5px; background: var(--border-lighter); padding: 5px; border-radius: 8px; }
.btn-nav { flex: 1; background: transparent; border: none; color: var(--text-main); padding: 8px; cursor: pointer; font-weight: bold; font-family: monospace; font-size: 1.1rem; border-radius: 6px; transition: background 0.2s, color 0.2s; }
.btn-nav:hover { background: var(--border-light); color: var(--text-pure); }

@keyframes delete-pulse {
    0% { background-color: rgba(var(--danger-rgb), 0.1); color: var(--danger); border-color: transparent; }
    100% { background-color: rgba(var(--danger-rgb), 0.5); color: var(--text-pure); border-color: var(--danger); }
}

.delete-warning {
    animation: delete-pulse 0.8s infinite alternate !important;
}