/* Override global .main-content padding so the chess layout fills the viewport */
.main-content {
    padding: var(--space-lg) 0 0 0;
    overflow: hidden;
}

@media (max-width: 768px) {
    .main-content {
        margin-right: 0;
    }
}

.logo {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.chess-container .logo-img {
    width: 50px !important;
    height: 50px !important;
    max-width: 50px !important;
    max-height: 50px !important;
    object-fit: contain !important;
    vertical-align: middle !important;
    margin-right: 8px !important;
}

.chess-container {
    display: flex;
    gap: var(--space-xl);
    width: 100%;
    height: calc(100vh - 60px - var(--space-lg));
    position: relative;
    padding: 0 var(--space-md);
    box-sizing: border-box;
    overflow: hidden;
}

.chess-left {
    flex: 0 0 auto;
    display: flex;
    flex-direction: column;
    justify-content: center;
    width: 100%;
    height: 100%;
    max-width: 720px;
    position: static;
}

.chessboard-container {
    position: relative;
    height: 100%;
    max-width: min(680px, 95vw, calc(100vh - 100px));
    max-height: calc(100vh - 100px);
}

.board-with-coords {
    display: grid;
    grid-template-columns: 30px 1fr 30px;
    grid-template-rows: 30px 1fr 30px;
    gap: 0;
}

.coord-top,
.coord-bottom {
    grid-column: 2;
    display: flex;
    justify-content: space-around;
    align-items: center;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
}

.coord-left,
.coord-right {
    grid-row: 2;
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    align-items: center;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
}

.game-over-banner {
    background: linear-gradient(135deg, rgba(249, 115, 22, 0.95), rgba(251, 146, 60, 0.95));
    color: white;
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-lg);
    box-shadow: var(--shadow-lg);
    text-align: center;
}

.game-over-banner.draw {
    background: linear-gradient(135deg, rgba(100, 116, 139, 0.95), rgba(148, 163, 184, 0.95));
}

/* Banner action buttons — white on the orange/gray gradient */
.banner-actions {
    display: flex;
    gap: 10px;
    margin-top: var(--space-md);
    justify-content: center;
}

.btn-white {
    background: white;
    color: #f97316;
    border: 2px solid white;
    font-weight: var(--font-semibold);
}

.btn-white:hover {
    background: rgba(255, 255, 255, 0.85);
}

.btn-white-outline {
    background: transparent;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.8);
    font-weight: var(--font-semibold);
}

.btn-white-outline:hover {
    background: rgba(255, 255, 255, 0.15);
}

/* Hide the end-of-game banner on small/short screens — the modal handles it there */
@media (max-width: 900px),
(max-height: 1049px) {
    .game-over-banner-end {
        display: none !important;
    }
}

.game-over-title {
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-sm);
}

.game-over-reason {
    font-size: var(--text-base);
    opacity: 0.95;
}

.game-over-winner {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    margin-top: var(--space-sm);
}

/* Game Over Modal */
.game-over-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.75);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 3000;
    animation: fadeInModal 0.4s ease-out;
}

.game-over-modal.hidden {
    display: none;
}

@keyframes fadeInModal {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.game-over-modal-content {
    background: var(--bg-primary);
    border-radius: 16px;
    padding: 40px 36px;
    max-width: 440px;
    width: 90%;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.4);
    text-align: center;
    animation: slideUpModal 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
    position: relative;
}

@keyframes slideUpModal {
    from {
        transform: translateY(50px) scale(0.95);
        opacity: 0;
    }

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

.game-over-modal-icon {
    font-size: 64px;
    margin-bottom: 16px;
    line-height: 1;
}

.game-over-modal-title {
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    margin-bottom: 8px;
}

.game-over-modal-subtitle {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--color-primary, #f97316);
    margin-bottom: 8px;
}

.game-over-modal-reason {
    color: var(--text-secondary);
    margin-bottom: 28px;
    font-size: var(--text-base);
}

.game-over-modal-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.game-over-modal-row {
    display: flex;
    gap: 10px;
}

.game-over-modal-row .btn {
    flex: 1;
}

.game-over-modal-close {
    position: absolute;
    top: 14px;
    right: 14px;
    background: none;
    border: none;
    font-size: 22px;
    cursor: pointer;
    color: var(--text-secondary);
    line-height: 1;
    padding: 4px 8px;
    border-radius: 6px;
    transition: background 0.15s;
}

.game-over-modal-close:hover {
    background: var(--bg-secondary);
}

/* Loading spinner for pending move */
.move-loader {
    width: 22px;
    aspect-ratio: 1;
    --_g: no-repeat radial-gradient(farthest-side, #f97316 90%, transparent);
    background: var(--_g), var(--_g), var(--_g), var(--_g);
    background-size: 40% 40%;
    animation: l46 0.9s infinite;
    display: inline-block;
    vertical-align: middle;
    margin-left: 8px;
    flex-shrink: 0;
}

.move-loader.hidden {
    display: none;
}

@keyframes l46 {
    0% {
        background-position: 0 0, 100% 0, 100% 100%, 0 100%
    }

    40%,
    50% {
        background-position: 100% 100%, 100% 0, 0 0, 0 100%
    }

    90%,
    100% {
        background-position: 100% 100%, 0 100%, 0 0, 100% 0
    }
}

/* Move time-ago */
.move-time-ago {
    font-size: 10px;
    color: var(--text-secondary);
    opacity: 0.65;
    margin-left: 4px;
    white-space: nowrap;
}


.chess-right {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    gap: var(--space-lg);
    padding-right: var(--space-sm);
    height: 100%;
}

.player-card {
    background-color: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    border: 2px solid transparent;
    transition: var(--transition-fast);
}

.player-card.active {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.1);
}

.player-avatar {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    object-fit: cover;
    border: 2px solid var(--color-gray-200);
}

.player-card.active .player-avatar {
    border-color: var(--color-primary);
}

.player-details {
    flex: 1;
}

.player-name {
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    margin-bottom: 2px;
}

.player-time {
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    font-family: var(--font-mono);
    color: var(--text-primary);
}

.player-time.low-time {
    color: var(--color-error);
    animation: pulse 1s infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.6;
    }
}

.side-panel {
    background-color: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
}

.panel-title {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--color-gray-200);
}

.captured-pieces-row {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    min-height: 40px;
    flex-wrap: wrap;
}

.captured-pieces {
    display: flex;
    flex-wrap: wrap;
    gap: 2px;
    align-items: center;
}

.captured-piece {
    height: 38px;
    width: 38px;
    object-fit: contain;
    opacity: 0.75;
}

.material-advantage {
    font-size: var(--text-sm);
    font-weight: var(--font-bold);
    color: var(--color-primary, #f97316);
    white-space: nowrap;
    margin-left: 4px;
}

.moves-list {
    max-height: 300px;
    overflow-y: auto;
}

.move-row {
    display: grid;
    grid-template-columns: 35px 1fr 1fr;
    gap: var(--space-sm);
    padding: var(--space-sm);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
    cursor: pointer;
}

.move-row:hover {
    background-color: var(--bg-secondary);
}

.move-row.active {
    background-color: var(--bg-secondary);
}

.move-number {
    font-weight: var(--font-semibold);
    color: var(--text-secondary);
}

.move-row.active .move-number {
    color: white;
}

.move-notation {
    font-family: var(--font-mono);
    color: var(--text-primary);
}

.move-row.active .move-notation {
    color: white;
}

.move-controls {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.move-control-btn {
    flex: 1;
    padding: var(--space-sm);
    background-color: var(--bg-secondary);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    font-size: var(--text-sm);
}

.move-control-btn:hover:not(:disabled) {
    background-color: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.move-control-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.game-actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.btn-action {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
}

.btn-warning {
    border-color: var(--color-warning);
    color: var(--color-warning);
}

.btn-warning:hover {
    background-color: var(--color-warning);
    color: var(--color-white);
}

.btn-danger {
    border-color: var(--color-error);
    color: var(--color-error);
}

.btn-danger:hover {
    background-color: var(--color-error);
    color: var(--color-white);
}

.game-status-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.game-status-modal.hidden {
    display: none;
}

.game-status-content {
    background-color: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    text-align: center;
    box-shadow: var(--shadow-xl);
    max-width: 400px;
    width: 90%;
}

.game-status-title {
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-md);
    color: var(--text-primary);
}

.game-status-message {
    font-size: var(--text-base);
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
}

.notification-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    max-width: 400px;
}

.game-toast {
    background-color: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-lg);
    border-left: 4px solid;
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    animation: gameToastIn 0.3s ease-out;
}

.game-toast.error {
    border-left-color: var(--color-error);
}

.game-toast.success {
    border-left-color: var(--color-success);
}

.game-toast.warning {
    border-left-color: var(--color-warning);
}

.game-toast-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
}

.game-toast-content {
    flex: 1;
}

.game-toast-title {
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

.game-toast-message {
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.game-toast-close {
    flex-shrink: 0;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.game-toast-close:hover {
    color: var(--text-primary);
}

@keyframes gameToastIn {
    from {
        transform: translateX(400px);
        opacity: 0;
    }

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

@keyframes gameToastOut {
    from {
        transform: translateX(0);
        opacity: 1;
    }

    to {
        transform: translateX(400px);
        opacity: 0;
    }
}

.confirm-dialog {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.confirm-dialog.hidden {
    display: none;
}

.confirm-content {
    background-color: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    max-width: 400px;
    width: 90%;
    box-shadow: var(--shadow-xl);
}

.confirm-title {
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.confirm-message {
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
}

.confirm-actions {
    display: flex;
    gap: var(--space-sm);
    justify-content: flex-end;
}

.draw-controls {
    display: flex;
    gap: 10px;
    justify-content: center;
    align-items: center;
    width: 100%;
    padding-top: 10px;
}

/* Hide scrollbars but keep functionality */
.chess-right::-webkit-scrollbar {
    display: none;
}

.chess-right {
    -ms-overflow-style: none;
    scrollbar-width: none;
}

/* Tab system */
.side-panel-tabs {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
    border-bottom: 2px solid var(--color-gray-200);
}

.tab-button {
    flex: 1;
    padding: var(--space-md);
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    font-weight: var(--font-semibold);
    color: var(--text-secondary);
    transition: var(--transition-fast);
    margin-bottom: -2px;
}

.tab-button.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

.tab-button:hover {
    color: var(--text-primary);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Add subtle invalid move report */
/* Message Modal */
/* ── 1025px – 1200px: board + sidebar side-by-side but tighter ── */
@media (min-width: 1025px) and (max-width: 1200px) {
    .chess-container {
        gap: var(--space-lg);
    }

    .chess-left {
        max-width: 560px;
    }

    .chess-right {
        min-width: 0;
    }

    .side-panel {
        padding: var(--space-md);
    }

    .player-card {
        padding: var(--space-md);
    }

    .player-avatar {
        width: 38px;
        height: 38px;
    }

    .player-time {
        font-size: var(--text-lg);
    }

    .player-name {
        font-size: var(--text-sm);
    }

    /* Compact move controls: hide text labels, show icons only */
    .move-controls {
        gap: 4px;
    }

    .move-control-btn {
        padding: var(--space-xs) var(--space-sm);
        font-size: 0;
        /* hide text */
        gap: 0;
    }

    .move-control-btn svg {
        width: 18px;
        height: 18px;
    }

    /* Tighter moves list */
    .moves-list {
        max-height: 220px;
    }

    .move-row {
        grid-template-columns: 28px 1fr 1fr;
        gap: 4px;
        padding: 4px 6px;
        font-size: var(--text-sm);
    }

    .move-notation {
        font-size: var(--text-sm);
    }

    /* Hide time-ago stamps to save space */
    .move-time-ago {
        display: none;
    }

    /* Compact captured pieces */
    .captured-piece {
        width: 38px;
        height: 38px;
    }

    /* Compact game action buttons */
    .game-actions .btn {
        padding: var(--space-sm);
        font-size: var(--text-sm);
    }

    .panel-title {
        font-size: var(--text-base);
        margin-bottom: var(--space-sm);
    }
}

/* ── 901px – 1024px: board shrinks to keep sidebar alongside ── */
@media (min-width: 901px) and (max-width: 1024px) {
    .chess-container {
        gap: var(--space-lg);
    }

    .chess-left {
        max-width: 480px;
    }

    .chessboard-container {
        max-width: min(480px, calc(100vw - 300px), calc(100vh - 100px));
    }

    .chess-right {
        min-width: 260px;
    }

    .side-panel {
        padding: var(--space-md);
    }

    .player-card {
        padding: var(--space-md);
    }

    .player-avatar {
        width: 34px;
        height: 34px;
    }

    .player-time {
        font-size: var(--text-base);
    }

    .player-name {
        font-size: var(--text-sm);
    }

    .move-controls {
        gap: 4px;
    }

    .move-control-btn {
        padding: var(--space-xs) var(--space-sm);
        font-size: 0;
        gap: 0;
    }

    .move-control-btn svg {
        width: 16px;
        height: 16px;
    }

    .moves-list {
        max-height: 180px;
    }

    .move-row {
        grid-template-columns: 24px 1fr 1fr;
        gap: 4px;
        padding: 4px 6px;
        font-size: var(--text-sm);
    }

    .move-time-ago {
        display: none;
    }

    .captured-piece {
        width: 32px;
        height: 32px;
    }

    .panel-title {
        font-size: var(--text-base);
        margin-bottom: var(--space-sm);
    }
}

@media (max-width: 900px) {
    .main-content {
        overflow: visible;
    }

    .chess-container {
        flex-direction: column;
        height: auto;
        overflow: visible;
    }

    .chess-left {
        max-width: 100%;
        width: 100%;
        height: auto;
        position: sticky;
        top: var(--topbar-height);
        z-index: 10;
        background: var(--bg-primary);
        padding: var(--space-sm) 0;
    }

    /* On mobile the sidebar is below the board – board fills full width */
    .chessboard-container {
        max-width: min(98vw, 88vh);
        max-height: 82vh;
        margin: 0 auto;
    }

    .chess-right {
        overflow-y: visible;
        height: auto;
        min-height: auto;
        -ms-overflow-style: auto;
        scrollbar-width: auto;
    }

    .chess-right::-webkit-scrollbar {
        display: block;
    }
}

@media (max-width: 768px) {
    .chess-container {
        gap: var(--space-sm);
        padding: 0 var(--space-sm);
    }

    .chessboard-container {
        max-width: min(98vw, 82vh);
    }

    .player-card {
        padding: var(--space-md);
    }

    .side-panel {
        padding: var(--space-md);
    }
}

@media (max-height: 850px) {
    .chess-container {
        padding: var(--space-md) var(--space-md);
    }

    .chess-left {
        justify-content: flex-start;
    }

    .chessboard-container {
        max-width: min(680px, 95vw, calc(100vh - 100px));
        max-height: calc(100vh - 100px);
    }

    .board-with-coords {
        grid-template-columns: 25px 1fr 25px;
        grid-template-rows: 25px 1fr 25px;
    }

    .coord-top,
    .coord-bottom,
    .coord-left,
    .coord-right {
        font-size: 11px;
    }
}

@media (max-height: 800px) {
    .chess-container {
        padding: var(--space-sm) 0;
    }

    .chess-left {
        justify-content: flex-start;
    }

    .chessboard-container {
        max-width: min(680px, 95vw, calc(100vh - 100px));
        max-height: calc(100vh - 100px);
    }

    .player-card {
        padding: var(--space-sm);
    }

    .side-panel {
        padding: var(--space-sm);
    }
}

@media (max-height: 750px) {
    .chessboard-container {
        max-width: min(680px, 95vw, calc(100vh - 100px));
        max-height: calc(100vh - 100px);
    }

    .chess-left {
        justify-content: flex-start;
    }

    .board-with-coords {
        grid-template-columns: 20px 1fr 20px;
        grid-template-rows: 20px 1fr 20px;
    }

    .coord-top,
    .coord-bottom,
    .coord-left,
    .coord-right {
        font-size: 10px;
    }

}

@media (max-height: 700px) {
    .chess-container {
        padding: var(--space-xs) var(--space-md);
    }

    .chess-left {
        justify-content: flex-start;
    }

    .chessboard-container {
        max-width: min(680px, 95vw, calc(100vh - 100px));
        max-height: calc(100vh - 100px);
    }

    .board-with-coords {
        grid-template-columns: 18px 1fr 18px;
        grid-template-rows: 18px 1fr 18px;
    }

    .coord-top,
    .coord-bottom,
    .coord-left,
    .coord-right {
        font-size: 9px;
    }
}

/* ─── Puzzel-specifieke styles ─────────────────────────────────────── */

/* Streakbalk bovenaan de sidebar */
.puzzle-streak-bar {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    background: linear-gradient(135deg, rgba(251, 146, 60, 0.15), rgba(249, 115, 22, 0.1));
    border: 1px solid rgba(249, 115, 22, 0.3);
    border-radius: var(--radius-lg);
    padding: var(--space-md) var(--space-lg);
    margin-bottom: var(--space-lg);
}

.puzzle-streak-flame {
    font-size: 28px;
    line-height: 1;
}

.puzzle-streak-info {
    flex: 1;
}

.puzzle-streak-count {
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    color: #f97316;
    line-height: 1;
}

.puzzle-streak-label {
    font-size: var(--text-xs);
    color: var(--text-secondary);
    margin-top: 2px;
}

.puzzle-streak-best {
    font-size: var(--text-xs);
    color: var(--text-secondary);
    text-align: right;
}

/* Puzzelinfo paneel */
.puzzle-info-panel {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    margin-bottom: var(--space-lg);
    box-shadow: var(--shadow-sm);
}

.puzzle-meta {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
    margin-bottom: var(--space-md);
}

.puzzle-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-secondary);
    border: 1px solid var(--color-gray-300);
}

.puzzle-badge.rating-badge {
    background: rgba(99, 102, 241, 0.15);
    color: #818cf8;
    border-color: rgba(99, 102, 241, 0.3);
}

.puzzle-instruction {
    font-size: var(--text-sm);
    color: var(--text-primary);
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-xs);
}

.puzzle-instruction.success {
    color: #22c55e;
}

.puzzle-instruction.error {
    color: #ef4444;
}

.puzzle-themes {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin-top: var(--space-sm);
}

.puzzle-theme-tag {
    font-size: 11px;
    padding: 2px 8px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    border: 1px solid var(--color-gray-300);
    text-transform: capitalize;
}

/* Puzzelacties */
.puzzle-actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

/* Hint- en oplossingsknoppen zijn chunky 3D-knoppen via de gedeelde
   .btn-3d primitieven (btn-3d-amber / btn-3d-indigo in base.css). */

/* Puzzel opgelost banner */
.puzzle-result-banner {
    display: none;
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-lg);
    text-align: center;
    font-weight: var(--font-bold);
    font-size: var(--text-lg);
    animation: fadeInBanner 0.4s ease-out;
}

@keyframes fadeInBanner {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }

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

.puzzle-result-banner.success {
    display: block;
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.2), rgba(16, 185, 129, 0.15));
    border: 1px solid rgba(34, 197, 94, 0.4);
    color: #22c55e;
}

.puzzle-result-banner.error {
    display: block;
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.2), rgba(220, 38, 38, 0.15));
    border: 1px solid rgba(239, 68, 68, 0.4);
    color: #ef4444;
}

/* Hint highlight op het bord */
.chess-square.hint-square::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(251, 191, 36, 0.45);
    pointer-events: none;
    border-radius: 2px;
    z-index: 2;
    animation: hintPulse 1s ease-in-out infinite;
}

@keyframes hintPulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.4;
    }
}

/* Speler-aan-zet indicator (puzzel heeft geen timers) */
.puzzle-side-to-move {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-md);
    box-shadow: var(--shadow-sm);
    font-weight: var(--font-semibold);
    font-size: var(--text-sm);
}

.side-dot {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    border: 2px solid var(--color-gray-300);
    flex-shrink: 0;
}

.side-dot.white {
    background: #fff;
}

.side-dot.black {
    background: #1a1a2e;
    border-color: #555;
}

/* ─── Rating bar ─────────────────────────────────────────────────── */

.puzzle-rating-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-md) var(--space-lg);
    margin-bottom: var(--space-md);
    box-shadow: var(--shadow-sm);
}

.puzzle-rating-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: var(--text-sm);
    color: var(--text-secondary);
    font-weight: var(--font-semibold);
}

.puzzle-rating-value-wrap {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.puzzle-rating-value {
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    transition: color 0.3s;
}

.puzzle-rating-change {
    font-size: var(--text-base);
    font-weight: var(--font-bold);
    opacity: 0;
    transform: translateY(0);
    transition: opacity 0.3s, transform 0.3s;
}

.puzzle-rating-change.visible {
    opacity: 1;
}

.puzzle-rating-change.positive {
    color: #22c55e;
}

.puzzle-rating-change.negative {
    color: #ef4444;
}

/* Float-up animation for rating change */
@keyframes floatUp {
    0% {
        opacity: 1;
        transform: translateY(0);
    }

    70% {
        opacity: 1;
        transform: translateY(-18px);
    }

    100% {
        opacity: 0;
        transform: translateY(-28px);
    }
}

.puzzle-rating-change.animate {
    animation: floatUp 1.8s ease-out forwards;
}

/* ─── Volgende-puzzel knop met fill-timer ────────────────────────── */

.btn-next-puzzle-wrap {
    position: relative;
    /* geen overflow:hidden — die zou de bevel-rand van .btn-3d wegknippen */
}

.btn-next-puzzle-wrap.hidden {
    display: none;
}

.btn-next-puzzle-wrap.visible {
    display: block;
}

/* Kleur via de gedeelde bevel-variabelen zodat .btn-3d het oppakt:
   groen normaal, rood zolang de auto-skip aftelling loopt */
.btn-next-puzzle {
    --bevel-light: #4ade80;
    --bevel-base: #22c55e;
    --bevel-dark: #16a34a;
    --bevel-edge: var(--bevel-green-edge);
    --bevel-glow: var(--bevel-green-glow);
}

/* Annuleer-modus: knop is rood zolang de auto-skip aftelling loopt */
.btn-next-puzzle.cancel-mode {
    --bevel-light: #fca5a5;
    --bevel-base: #ef4444;
    --bevel-dark: #b91c1c;
    --bevel-edge: var(--bevel-red-edge);
    --bevel-glow: var(--bevel-red-glow);
}

.btn-next-puzzle .icon-cancel {
    display: none;
}

.btn-next-puzzle.cancel-mode .icon-next {
    display: none;
}

.btn-next-puzzle.cancel-mode .icon-cancel {
    display: block;
}

.next-puzzle-timer {
    margin-left: auto;
    font-size: var(--text-xs);
    font-weight: var(--font-bold);
    background: rgba(255, 255, 255, 0.22);
    border-radius: var(--radius-full);
    padding: 2px 8px;
    min-width: 24px;
    text-align: center;
}

/* The fill layer that grows left→right over 2s. Ligt bovenop de (nu opaque)
   knop als progress-laag en volgt de hover/active-translatie van de knop
   zodat hij blijft uitlijnen. De aftelling loopt altijd in cancel-modus,
   dus de golf is donkerrood met een lichte voorrand — een subtiele tint
   valt weg tegen het rood van de 3D-knop zelf. */
.next-puzzle-fill {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        90deg,
        rgba(127, 29, 29, 0.62) 0%,
        rgba(127, 29, 29, 0.52) 82%,
        rgba(255, 255, 255, 0.55) 95%,
        rgba(255, 255, 255, 0.8) 100%
    );
    width: 0%;
    z-index: 2;
    pointer-events: none;
    border-radius: var(--radius-xl);
    transition: none;
    /* controlled via JS */
}

.next-puzzle-fill.filling {
    transition: width 2s linear;
    width: 100%;
}

.btn-next-puzzle-wrap:hover .next-puzzle-fill {
    transform: translateY(-3px);
}

.btn-next-puzzle-wrap:active .next-puzzle-fill {
    transform: translateY(3px);
}

/* ─── Puzzel moeilijkheid badge ──────────────────────────────────── */

.puzzle-difficulty-badge {
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-full);
    padding: 3px 12px;
}

/* ─── Mobiel: compactere sidebar ────────────────────────────────── */
@media (max-width: 900px) {
    .puzzle-streak-bar {
        padding: var(--space-sm) var(--space-md);
        margin-bottom: var(--space-sm);
    }

    .puzzle-streak-count {
        font-size: var(--text-xl);
    }

    .puzzle-streak-flame svg {
        width: 20px;
        height: 20px;
    }

    .puzzle-rating-bar {
        padding: var(--space-sm) var(--space-md);
        margin-bottom: var(--space-sm);
    }

    .puzzle-rating-value {
        font-size: var(--text-lg);
    }

    .puzzle-info-panel {
        padding: var(--space-sm) var(--space-md);
        margin-bottom: var(--space-sm);
    }

    .puzzle-side-to-move {
        padding: var(--space-sm) var(--space-md);
        margin-bottom: var(--space-sm);
    }

    .puzzle-result-banner {
        margin-bottom: var(--space-sm);
        padding: var(--space-sm) var(--space-md);
    }

    .puzzle-actions {
        gap: var(--space-sm);
    }

    .btn-action {
        padding: var(--space-sm) var(--space-md);
        font-size: var(--text-sm);
    }

    .side-panel {
        padding: var(--space-sm) var(--space-md);
        margin-top: var(--space-sm) !important;
    }
}