/* ══════════════════════════════════════════════════════════════
   opening.css — Openingenverkenner
   ══════════════════════════════════════════════════════════════ */

/* Override global main-content padding */
.main-content {
    padding: var(--space-lg) 0 0 0;
    overflow: hidden;
}

/* ─── Layout ──────────────────────────────────────────────────── */

.opening-layout {
    display: flex;
    gap: 0;
    width: 100%;
    height: calc(100vh - 60px - var(--space-lg));
}

/* ─── Linker paneel ───────────────────────────────────────────── */

.opening-left {
    display: flex;
    flex-direction: column;
    width: 340px;
    min-width: 280px;
    max-width: 360px;
    flex-shrink: 0;
    border-right: 1px solid var(--color-gray-200);
    background: var(--bg-primary);
    overflow: hidden;
    height: 100%;
    padding: var(--space-lg) var(--space-lg) 0;
    gap: var(--space-md);
}

/* Zoekbalk */
.opening-search-bar {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    background: var(--bg-secondary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    padding: var(--space-sm) var(--space-md);
    transition: border-color 0.2s;
}

.opening-search-bar:focus-within {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.1);
}

.opening-search-icon {
    color: var(--text-tertiary);
    flex-shrink: 0;
}

.opening-search-input {
    flex: 1;
    border: none;
    background: transparent;
    outline: none;
    font-size: var(--text-sm);
    color: var(--text-primary);
    min-width: 0;
}

.opening-search-input::placeholder {
    color: var(--text-tertiary);
}

.opening-search-clear {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-tertiary);
    padding: 2px;
    display: flex;
    align-items: center;
    border-radius: var(--radius-sm);
    transition: color 0.15s;
    flex-shrink: 0;
}

.opening-search-clear:hover {
    color: var(--text-primary);
}

.opening-search-clear.hidden {
    display: none;
}

/* ECO-tabs */
.opening-tabs {
    display: flex;
    gap: 4px;
    flex-shrink: 0;
}

.opening-tab {
    flex: 1;
    padding: var(--space-sm) 0;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    background: var(--bg-secondary);
    cursor: pointer;
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    color: var(--text-secondary);
    transition: all 0.15s;
}

.opening-tab:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.opening-tab.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

/* Resultaatteller */
.opening-result-count {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    flex-shrink: 0;
}

/* Lijst */
.opening-list {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    scrollbar-width: thin;
    scrollbar-color: var(--color-gray-300) transparent;
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding-bottom: var(--space-lg);
}

.opening-list::-webkit-scrollbar {
    width: 4px;
}

.opening-list::-webkit-scrollbar-track {
    background: transparent;
}

.opening-list::-webkit-scrollbar-thumb {
    background: var(--color-gray-300);
    border-radius: 2px;
}

/* Laad-indicator */
.opening-list-loading {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-xl) 0;
    color: var(--text-secondary);
    font-size: var(--text-sm);
    justify-content: center;
}

.opening-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-gray-200);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: openingSpin 0.7s linear infinite;
    flex-shrink: 0;
}

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

/* Openingsrij */
.opening-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background 0.12s;
    border: 1px solid transparent;
}

.opening-item:hover {
    background: var(--bg-secondary);
}

.opening-item.active {
    background: rgba(249, 115, 22, 0.08);
    border-color: rgba(249, 115, 22, 0.25);
}

.opening-item-eco {
    font-size: 10px;
    font-weight: var(--font-bold);
    color: var(--text-tertiary);
    font-family: var(--font-mono);
    width: 32px;
    flex-shrink: 0;
    letter-spacing: 0.05em;
}

.opening-item.active .opening-item-eco {
    color: var(--color-primary);
}

.opening-item-info {
    flex: 1;
    min-width: 0;
}

.opening-item-name {
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.opening-item.active .opening-item-name {
    color: var(--color-primary);
    font-weight: var(--font-semibold);
}

.opening-item-moves {
    font-size: 11px;
    color: var(--text-tertiary);
    font-family: var(--font-mono);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-top: 1px;
}

.opening-item-arrow {
    color: var(--text-tertiary);
    flex-shrink: 0;
    transition: color 0.12s;
}

.opening-item.active .opening-item-arrow,
.opening-item:hover .opening-item-arrow {
    color: var(--color-primary);
}

/* Geen resultaten */
.opening-list-empty {
    padding: var(--space-xl) 0;
    text-align: center;
    color: var(--text-tertiary);
    font-size: var(--text-sm);
}

/* ─── Rechter paneel ──────────────────────────────────────────── */

.opening-right {
    flex: 1;
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    overflow-y: auto;
    overflow-x: hidden;
    height: 100%;
    padding: var(--space-lg) var(--space-lg) var(--space-2xl);
    gap: var(--space-lg);
    scrollbar-width: thin;
    scrollbar-color: var(--color-gray-300) transparent;
}

/* Info-paneel boven het bord */
.opening-info-panel {
    width: 100%;
    flex-shrink: 0;
}

.opening-info-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-lg);
    color: var(--text-tertiary);
    font-size: var(--text-sm);
    text-align: center;
}

.opening-info-content.hidden {
    display: none;
}

.opening-info-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.opening-info-name {
    font-size: var(--text-lg);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    line-height: 1.3;
}

.opening-info-eco {
    font-size: var(--text-xs);
    font-family: var(--font-mono);
    color: var(--color-primary);
    font-weight: var(--font-semibold);
    margin-top: 2px;
}

.opening-reset-btn {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-md);
    background: var(--bg-secondary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    color: var(--text-secondary);
    transition: all 0.15s;
    white-space: nowrap;
    flex-shrink: 0;
}

.opening-reset-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* Zettenchips */
.opening-moves-strip {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    align-items: center;
}

.move-chip {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    padding: 3px 8px;
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-family: var(--font-mono);
    font-weight: var(--font-semibold);
    cursor: pointer;
    border: 1px solid var(--color-gray-200);
    background: var(--bg-secondary);
    color: var(--text-secondary);
    transition: all 0.12s;
}

.move-chip:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: rgba(249, 115, 22, 0.05);
}

.move-chip.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

.move-chip-number {
    color: var(--text-tertiary);
    font-weight: var(--font-normal);
}

.move-chip.active .move-chip-number {
    color: rgba(255, 255, 255, 0.7);
}

/* Sticky wrapper: bord + infopaneel blijven in beeld bij scrollen */
.opening-sticky-wrap {
    position: sticky;
    top: var(--space-lg);
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    z-index: 10;
    align-self: flex-start;
}

/* Bord */
.opening-board-wrap {
    flex-shrink: 0;
    width: 100%;
}

.opening-board-wrap .chessboard-wrapper {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    box-shadow: var(--shadow-lg);
}

.opening-board-wrap .chessboard {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    grid-template-rows: repeat(8, 1fr);
    aspect-ratio: 1;
    border: 3px solid var(--color-gray-700);
    border-radius: var(--radius-sm);
    overflow: hidden;
    width: 100%;
}

/* Statusbalk */
.opening-status-bar {
    width: 100%;
    min-height: 0;
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    text-align: center;
    padding: 0;
    border-radius: var(--radius-md);
    transition: all 0.2s;
    overflow: hidden;
    flex-shrink: 0;
}

.opening-status-bar.show-hit {
    padding: var(--space-sm) var(--space-md);
    background: rgba(34, 197, 94, 0.12);
    border: 1px solid rgba(34, 197, 94, 0.3);
    color: #22c55e;
}

.opening-status-bar.show-unknown {
    padding: var(--space-sm) var(--space-md);
    background: rgba(100, 116, 139, 0.1);
    border: 1px solid var(--color-gray-200);
    color: var(--text-secondary);
}

/* Variantenpaneel */
.opening-variants-panel {
    flex: 1;
    min-width: 200px;
    display: flex;
    flex-direction: column;
    padding-top: var(--space-sm);
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--color-gray-300) transparent;
}

.opening-variants-panel::-webkit-scrollbar {
    width: 4px;
}

.opening-variants-panel::-webkit-scrollbar-thumb {
    background: var(--color-gray-300);
    border-radius: 2px;
}

.opening-variants-title {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: var(--space-sm);
}

.opening-variants-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.opening-variants-empty {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    padding: var(--space-sm) 0;
}

.opening-variant-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-secondary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.12s;
}

.opening-variant-item:hover {
    border-color: var(--color-primary);
    background: rgba(249, 115, 22, 0.05);
}

.opening-variant-move {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    font-weight: var(--font-bold);
    color: var(--color-primary);
    min-width: 52px;
}

/* Wrapper voor naam + eval bar */
.opening-variant-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 3px;
    min-width: 0;
}

.opening-variant-name {
    font-size: var(--text-sm);
    color: var(--text-primary);
    font-weight: var(--font-medium);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Eval progress bar */
.opening-variant-eval-bar {
    height: 4px;
    background: var(--color-gray-200);
    border-radius: 2px;
    overflow: hidden;
    position: relative;
}

.opening-variant-eval-fill {
    height: 100%;
    width: 0%;
    border-radius: 2px;
    background: var(--text-tertiary);
    transition: width 0.4s ease, background 0.4s ease;
}

.opening-variant-eco {
    font-size: 10px;
    font-family: var(--font-mono);
    color: var(--text-tertiary);
    flex-shrink: 0;
}

/* ─── Floating Action Button (mobiel/tablet) ──────────────────── */

.opening-board-fab {
    display: none;
    position: fixed;
    bottom: var(--space-xl);
    right: var(--space-xl);
    z-index: 500;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    background: var(--color-primary);
    color: white;
    border: none;
    border-radius: var(--radius-full);
    box-shadow: 0 4px 20px rgba(249, 115, 22, 0.4);
    font-size: var(--text-sm);
    font-weight: var(--font-bold);
    cursor: pointer;
    transition: transform 0.15s, box-shadow 0.15s;
}

.opening-board-fab:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(249, 115, 22, 0.5);
}

/* ─── Bord-overlay (mobiel/tablet) ───────────────────────────── */

.opening-board-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
    z-index: 600;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    animation: overlayFadeIn 0.2s ease;
}

.opening-board-overlay.hidden {
    display: none;
}

@keyframes overlayFadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.opening-board-overlay-inner {
    background: var(--bg-primary);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    width: 100%;
    max-width: 540px;
    max-height: 92vh;
    overflow-y: auto;
    padding: var(--space-lg);
    animation: overlaySlideUp 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes overlaySlideUp {
    from {
        transform: translateY(60px);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.opening-board-overlay-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-md);
}

.opening-overlay-close {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-secondary);
    padding: var(--space-xs);
    border-radius: var(--radius-sm);
    transition: color 0.15s;
    display: flex;
}

.opening-overlay-close:hover {
    color: var(--text-primary);
}

.opening-overlay-board-wrap {
    width: 100%;
    margin: var(--space-md) 0;
}

.opening-overlay-board-wrap .chessboard {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    grid-template-rows: repeat(8, 1fr);
    aspect-ratio: 1;
    border: 3px solid var(--color-gray-700);
    border-radius: var(--radius-sm);
    overflow: hidden;
    width: 100%;
}

/* ─── Schaakbord squares (gedeeld) ───────────────────────────── */

.chess-square {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: opacity 0.12s;
    position: relative;
    min-width: 0;
    min-height: 0;
}

.chess-square.light {
    background-color: #f0d9b5;
}

.chess-square.dark {
    background-color: #b58863;
}

.chess-square.last-move {
    background-color: rgba(249, 115, 22, 0.4) !important;
}

.chess-square.clicked {
    background: rgba(249, 115, 22, 0.6) !important;
}

.chess-square:hover {
    opacity: 0.82;
}

.chess-piece {
    user-select: none;
    line-height: 1;
    display: block;
    width: 88%;
    height: 88%;
    pointer-events: none;
}

.legal-move::after {
    content: '';
    position: absolute;
    width: 30%;
    height: 30%;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 50%;
    pointer-events: none;
}

.legal-capture::after {
    content: '';
    position: absolute;
    inset: 5%;
    border: 3px solid rgba(249, 115, 22, 0.6);
    border-radius: 50%;
    pointer-events: none;
}

/* ─── Responsive ──────────────────────────────────────────────── */

/* Tablet: 768px – 1100px → verberg rechter paneel, toon FAB */
@media (max-width: 1100px) {
    .opening-right {
        display: none;
    }

    .opening-left {
        width: 100%;
        max-width: 100%;
        min-width: 0;
        border-right: none;
        padding: var(--space-md);
    }

    .opening-board-fab {
        display: flex;
    }
}

/* Tablet only (770px-1100px): shift FAB left to account for nav/scrollbar */
@media (min-width: 770px) and (max-width: 1100px) {
    .opening-board-fab {
        right: calc(var(--space-xl) + 60px);
    }

    .main-content {
        overflow: visible;
    }

    .opening-layout {
        height: auto;
        min-height: calc(100vh - 60px - var(--space-lg));
    }
}

/* Mobiel: kleiner dan 480px → compactere lijst */
@media (max-width: 480px) {
    .opening-left {
        padding: var(--space-sm);
        gap: var(--space-sm);
    }

    .opening-board-fab {
        bottom: var(--space-lg);
        right: var(--space-lg);
        padding: var(--space-sm) var(--space-md);
    }

    .opening-board-overlay-inner {
        padding: var(--space-md);
    }
}

/* ─── Stuk-animatie (identiek aan game.css) ─────────────────────── */

.piece-animating {
    position: fixed;
    z-index: 9999;
    pointer-events: none;
    will-change: left, top;
}

/* ─── Last-move highlight ──────────────────────────────────────────── */

.opening-board-wrap .chess-square.last-move,
.opening-overlay-board-wrap .chess-square.last-move {
    background-color: rgba(249, 115, 22, 0.45) !important;
}

/* ─── Coördinaten (file/rank labels) ───────────────────────────────── */

.file-label,
.rank-label {
    position: absolute;
    font-size: 10px;
    font-weight: var(--font-bold);
    line-height: 1;
    pointer-events: none;
    user-select: none;
    z-index: 2;
}

.file-label {
    bottom: 2px;
    right: 3px;
}

.rank-label {
    top: 2px;
    left: 3px;
}

.chess-square.light .file-label,
.chess-square.light .rank-label {
    color: #b58863;
}

.chess-square.dark .file-label,
.chess-square.dark .rank-label {
    color: #f0d9b5;
}

/* ─── Varianten loader ──────────────────────────────────────────── */

.variants-loading {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-sm) 0;
    color: var(--text-tertiary);
    font-size: var(--text-sm);
}

.variants-spinner {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    border: 3px solid var(--color-gray-200);
    border-top-color: var(--color-primary);
    flex-shrink: 0;
    animation: variantSpin 0.75s linear infinite;
}

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

/* ─── Pijl canvas overlay ───────────────────────────────────────── */

.chessboard-wrapper {
    position: relative;
}

.arrow-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 10;
}

/* ─── Drag & drop ───────────────────────────────────────────────── */

.chess-square.drag-over {
    background-color: rgba(249, 115, 22, 0.5) !important;
}

.chess-piece[draggable="true"] {
    cursor: grab;
}

.chess-piece[draggable="true"]:active {
    cursor: grabbing;
}

/* Prevent img inside chess-piece from interfering with drag */
.opening-board-wrap .chess-piece img,
.opening-overlay-board-wrap .chess-piece img {
    pointer-events: none;
    user-select: none;
    -webkit-user-drag: none;
}

/* ══════════════════════════════════════════════
   EVALUEER — knop + paneel
══════════════════════════════════════════════ */

.opening-info-actions {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    flex-shrink: 0;
}

.opening-eval-btn {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-md);
    background: var(--color-primary);
    border: 1px solid var(--color-primary);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    color: #fff;
    transition: all 0.15s;
    white-space: nowrap;
}

.opening-eval-btn:hover:not(:disabled) {
    background: var(--color-primary-dark, #1d4ed8);
    border-color: var(--color-primary-dark, #1d4ed8);
}

.opening-eval-btn:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

/* Paneel */
.opening-eval-panel {
    margin-top: var(--space-sm);
    background: var(--bg-secondary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.opening-eval-panel.hidden {
    display: none;
}

.opening-eval-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-sm) var(--space-md);
    border-bottom: 1px solid var(--color-gray-200);
    background: var(--bg-primary);
}

.opening-eval-title {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
}

.opening-eval-close {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 4px var(--space-sm);
    background: transparent;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    color: var(--text-secondary);
    transition: all 0.15s;
}

.opening-eval-close:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* Regels */
.opening-eval-lines {
    padding: var(--space-sm);
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.opening-eval-loading {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm);
    color: var(--text-secondary);
    font-size: var(--text-sm);
}

.opening-eval-line {
    display: grid;
    grid-template-columns: 20px 1fr auto;
    grid-template-rows: auto auto;
    gap: 2px 8px;
    align-items: center;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--eval-color, #94a3b8);
    background: var(--bg-primary);
    transition: background 0.1s;
}

.opening-eval-line:hover {
    background: var(--bg-tertiary, var(--bg-secondary));
}

.opening-eval-rank {
    grid-row: 1 / 3;
    font-size: var(--text-xs);
    font-weight: var(--font-bold);
    color: var(--eval-color, #94a3b8);
    text-align: center;
}

.opening-eval-move {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    font-family: var(--font-mono);
}

.opening-eval-score {
    font-size: var(--text-sm);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    font-family: var(--font-mono);
    text-align: right;
    white-space: nowrap;
}

.opening-eval-depth {
    font-size: var(--text-xs);
    font-weight: var(--font-normal);
    color: var(--text-tertiary);
    margin-left: 2px;
}

.opening-eval-pv {
    grid-column: 2 / 4;
    font-size: var(--text-xs);
    color: var(--text-secondary);
    font-family: var(--font-mono);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}