* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    background-color: #0a0a0a; /* Matches the dark square color */
    color: #ecf0f1; /* Ensures text is readable */
    height: 100%; /* Ensures full height for the body */
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: clamp(10px, 2vw, 20px);
}

@media (max-width: 768px) {
    body {
        padding: 0;
        align-items: flex-start;
    }
}

.container {
    background: transparent;
    border-radius: 0;
    padding: clamp(20px, 4vw, 30px);
    box-shadow: none;
    max-width: min(800px, 95vw);
    width: 100%;
}

@media (max-width: 768px) {
    .container {
        border-radius: 0;
        box-shadow: none;
        max-width: 100vw;
        min-height: 100vh;
    }
}

h1 {
    text-align: center;
    color: #ecf0f1;
    margin-bottom: 20px;
    font-size: 2.5em;
}

.status-text {
    display: none; /* Hidden by default, shown by JavaScript when in game */
    text-align: center;
    margin-bottom: clamp(15px, 3vw, 20px);
    padding: clamp(8px, 1.5vw, 10px);
    font-size: clamp(0.85em, 2vw, 1em);
    color: #ecf0f1;
}

#game-layout-container {
    display: none;
    width: 100%;
    gap: 20px;
}

@media (min-width: 1024px) {
    #game-layout-container {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 1023px) {
    #game-layout-container {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
}

#game-left-panel {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
}

@media (min-width: 1024px) {
    #game-left-panel {
        flex: 0 0 auto;
    }
}

#game-controls-top,
.game-controls-nav {
    width: 100%;
    max-width: min(560px, 90vw, calc(100vw - 60px));
    margin: 0 auto 15px auto;
    background-color: transparent;
    padding: 0;
    position: relative;
    z-index: 100;
}

#game-controls-top .game-controls-buttons,
.game-controls-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 0;
    width: 100%;
}

#game-controls-top .game-controls-buttons .btn,
.game-controls-buttons .btn {
    margin: 0;
    flex: 1 1 auto;
    min-width: 3em;
    font-size: clamp(0.75em, 2vw, 1em);
    padding: 0.5em 0.75em;
    white-space: nowrap;
    text-align: center;
    font-weight: 600;
    height: auto;
}

#game-controls-top .game-controls-buttons .promotion-btn,
.game-controls-buttons .promotion-btn {
    height: auto;
    min-height: 0;
    padding: 0.5em 0.75em;
    min-width: 70px;
}

@media (max-width: 768px) {
    #game-controls-top,
    .game-controls-nav {
        width: 100%;
        max-width: 100%;
        margin: 0 auto 10px auto;
    }

    #game-controls-top .game-controls-buttons,
    .game-controls-buttons {
        width: 100%;
        gap: 0.4rem;
    }
    
    #game-controls-top .game-controls-buttons .btn,
    .game-controls-buttons .btn {
        flex: 1 1 auto;
        min-width: 50px;
        font-size: 0.85em;
        padding: 0.6em 0.4em;
    }
    
    #game-controls-top .game-controls-buttons .promotion-btn,
    .game-controls-buttons .promotion-btn {
        min-width: 70px;
    }
    
    #game-controls-top .game-controls-buttons .btn:empty,
    .game-controls-buttons .btn:empty {
        min-width: 2em;
    }
}

#chessboard-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    max-width: 90vw;
    background-color: #0a0a0a; /* Matches chessboard color */
    margin-top: 0; /* Remove extra margin */
}

.player-name-display {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    width: min(560px, 90vw, calc(100vw - 60px));
    text-align: center;
    padding: 5px 5px;
    margin: 5px 0;
    font-size: clamp(0.5em, 2vw, 0.75em);
    font-weight: normal;
    color: #F5F5F5;
    background: transparent;
    border-radius: 0;
    box-sizing: border-box;
}

#opponent-name-display {
    order: 1;
}

#chessboard {
    order: 2;
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    grid-template-rows: repeat(8, 1fr);
    width: min(560px, 90vw, calc(100vw - 60px));
    aspect-ratio: 1;
    border: clamp(2px, 0.5vw, 3px) solid #333;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    box-sizing: border-box;
    margin: 0 auto;
}

#player-name-display {
    order: 3;
}

#game-status-text {
    order: 4;
    width: min(560px, 90vw, calc(100vw - 60px));
    margin-top: 10px;
}

#move-notation-display {
    order: 5;
    width: min(560px, 90vw, calc(100vw - 60px));
    padding: 8px;
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
    color: #ecf0f1;
    font-size: clamp(0.75em, 1.5vw, 0.9em);
    line-height: 1.6;
    word-wrap: break-word;
    max-height: 100px;
    overflow-y: auto;
}

/* Move annotations and tooltips */
.move-with-annotation {
    display: inline-block;
    margin-right: 2px;
}

.move-text {
    cursor: default;
}

.move-annotation {
    font-weight: bold;
    margin-left: 2px;
    font-size: 0.9em;
}

.annotation-best {
    color: #4CAF50;
}

.annotation-excellent {
    color: #8BC34A;
}

.annotation-good {
    color: #CDDC39;
}

.annotation-inaccuracy {
    color: #FFC107;
}

.annotation-mistake {
    color: #FF9800;
}

.annotation-blunder {
    color: #F44336;
}

/* Tooltip functionality removed - annotations are still visible */

#spectator-count-display {
    order: 6;
    width: min(560px, 90vw, calc(100vw - 60px));
}

.square {
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: clamp(24px, 5vw, 50px);
    cursor: pointer;
    position: relative;
    user-select: none;
}

.square-label {
    position: absolute;
    font-size: clamp(0.4em, 1vw, 0.55em);
    font-weight: 600;
    pointer-events: none;
    user-select: none;
    z-index: 1;
    padding: 2px;
    line-height: 1;
    top: 0px;
    left: 0px;
}

/* For dark squares, use light text */
.square.dark .square-label {
    color: rgba(245, 245, 245, 0.85);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.8);
}

/* For light squares, use dark text */
.square.light .square-label {
    color: rgba(51, 51, 51, 0.85);
    text-shadow: 0 1px 2px rgba(255, 255, 255, 0.8);
}

.square.light {
    background-color: #f5f5f5;
    color: #00D1B2;
}

.square.dark {
    background-color: #00D1B2;
    color: #ecf0f1;
}

.square.selected {
    box-shadow: inset 0 0 0 3px #000000;
}

.square.valid-move {
    position: relative;
}

.square.valid-move::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.3);
    pointer-events: none;
}

.square.drag-over-valid {
    background-color: #81c784 !important;
    box-shadow: inset 0 0 0 3px #4caf50;
}

.piece {
    font-size: clamp(24px, 5vw, 50px);
    line-height: 1;
    cursor: pointer;
    transition: transform 0.2s;
}

.piece:hover {
    transform: scale(1.1);
}

.piece-img {
    width: 100%;
    height: 100%;
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    display: block;
    margin: auto;
    pointer-events: none; /* keep square click handling intact */
    user-select: none;
    -webkit-user-drag: none;
}

.square[draggable="true"] {
    cursor: grab;
}

.square[draggable="true"]:active {
    cursor: grabbing;
}

.lobby-panel {
    background: #f5f5f5;
    border-radius: 10px;
    padding: 30px;
    text-align: center;
    margin: 20px 0;
}

.lobby-panel h2 {
    margin-bottom: 15px;
    color: #333;
}

.lobby-panel p {
    margin: 10px 0;
    color: #333; /* Changed from #666 to make text more visible */
}

/* Ensure text is readable - use dark color to match table text */
#lobby-status-text {
    color: #333 !important;
}

/* Queue info can remain light if needed, but let's make it dark too for consistency */
#queue-info {
    color: #333 !important;
}

/* Make action help text more visible */
.lobby-panel .action-help {
    color: #333 !important;
}

/* Ensure games list text is visible */
#games-list p {
    color: #333 !important;
}

#games-list-container h3 {
    color: #333 !important;
}

/* Games list spreadsheet styling */
#games-search-input {
    font-size: 0.85em;
    color: #333;
}

#games-search-input:focus {
    outline: 2px solid #667eea;
    outline-offset: 2px;
}

#games-list-table {
    background: white;
    border: 1px solid #ddd;
    table-layout: fixed;
}

#games-list-table thead {
    background: #f5f5f5;
    position: sticky;
    top: 0;
    z-index: 10;
}

#games-list-table th {
    font-weight: 600;
    color: #333;
    user-select: none;
    padding: 3px 4px;
    text-align: center;
}

#games-list-table tbody tr {
    transition: background-color 0.1s;
}

#games-list-table tbody tr:hover {
    background-color: #f9f9f9;
}

#games-list-table tbody tr:last-child {
    border-bottom: none;
}

#games-list-table td {
    padding: 1px 2px;
    max-width: 0; /* Enable text truncation */
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    text-align: center;
}


/* Status column - truncate with ellipsis for consistency */
#games-list-table td:nth-child(3) {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Time control column - truncate with ellipsis for consistency */
#games-list-table td:nth-child(4) {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Recent games table styling */
#recent-games-table {
    background: white;
    border: 1px solid #ddd;
    table-layout: fixed;
}

#recent-games-table thead {
    background: #f5f5f5;
    position: sticky;
    top: 0;
    z-index: 10;
}

#recent-games-table th {
    font-weight: 600;
    color: #333;
    user-select: none;
    padding: 3px 4px;
    text-align: center;
}

#recent-games-table tbody tr {
    transition: background-color 0.1s;
}

#recent-games-table tbody tr:hover {
    background-color: #f9f9f9;
}

#recent-games-table tbody tr:last-child {
    border-bottom: none;
}

#recent-games-table td {
    padding: 1px 2px;
    max-width: 0; /* Enable text truncation */
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    text-align: center;
}

/* Mobile optimizations for both tables */
@media (max-width: 768px) {
    #games-list-table th,
    #recent-games-table th {
        padding: 2px 1px;
        font-size: 0.7em;
    }
    
    #games-list-table td,
    #recent-games-table td {
        padding: 1px 1px;
        font-size: 0.7em;
    }
    
    /* Actions column can have slightly more padding for buttons */
    #games-list-table td:last-child,
    #recent-games-table td:last-child {
        padding: 1px 2px;
    }
}

@media (max-width: 480px) {
    #games-list-table th,
    #recent-games-table th {
        padding: 1px 1px;
        font-size: 0.65em;
    }
    
    #games-list-table td,
    #recent-games-table td {
        padding: 1px 1px;
        font-size: 0.65em;
    }
    
    #games-list-table td:last-child,
    #recent-games-table td:last-child {
        padding: 1px 1px;
    }
}

.sortable-header {
    position: relative;
}

.sortable-header:hover {
    background-color: #e8e8e8 !important;
}

#games-list-wrapper {
    border: 1px solid #ddd;
    background: white;
    max-height: 400px;
    overflow-y: auto;
}

/* Password protection UI */
#password-protect-checkbox {
    margin: 0;
    cursor: pointer;
}

#room-password-input {
    font-size: 0.9em;
    color: #333;
}

#room-password-input:focus {
    outline: 2px solid #667eea;
    outline-offset: 2px;
}

.game-history {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #ddd;
}

.game-history h3 {
    margin-bottom: 15px;
    color: #333;
    font-size: 1.2em;
}

.game-history-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.game-history-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px;
    background: #f9f9f9;
    border-radius: 5px;
    border: 1px solid #e0e0e0;
}

.game-history-info {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    flex: 1;
}

.game-history-actions {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    flex-wrap: wrap;
}

.game-history-actions .button {
    margin: 0;
}

.game-result {
    font-size: 1.2em;
}

.game-opponent {
    font-weight: 600;
    color: #333;
}

.game-date {
    color: #666;
    font-size: 0.9em;
}

.game-moves {
    color: #888;
    font-size: 0.85em;
}

.btn-small {
    padding: 6px 12px;
    font-size: 0.85em;
    white-space: nowrap;
}

@media (max-width: 768px) {
    .game-history-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    
    .game-history-info {
        width: 100%;
    }
    
    .btn-small {
        width: 100%;
    }
}


.btn-primary {
    background: linear-gradient(to bottom, #66bb6a, #4caf50);
    font-size: clamp(1em, 2.2vw, 1.2em);
    padding: clamp(12px, 2vw, 15px) clamp(30px, 5vw, 40px);
    border: 2px outset #4caf50;
    border-top-color: #81c784;
    border-left-color: #81c784;
    border-right-color: #388e3c;
    border-bottom-color: #388e3c;
}

.btn-primary:hover {
    background: linear-gradient(to bottom, #81c784, #66bb6a);
    border-top-color: #a5d6a7;
    border-left-color: #a5d6a7;
    border-right-color: #4caf50;
    border-bottom-color: #4caf50;
}

.btn-primary:active {
    background: linear-gradient(to bottom, #388e3c, #4caf50);
    border-style: inset;
    border-top-color: #388e3c;
    border-left-color: #388e3c;
    border-right-color: #81c784;
    border-bottom-color: #81c784;
    transform: translate(1px, 1px);
}

.controls {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 20px auto 0;
    flex-direction: column;
    width: min(560px, 90vw, calc(100vw - 60px));
    box-sizing: border-box;
}

#start-game-btn {
    width: 100%;
}

.btn {
    padding: clamp(10px, 1.5vw, 12px) clamp(20px, 4vw, 30px);
    font-size: clamp(0.9em, 2vw, 1.1em);
    background: #667eea;
    background: linear-gradient(to bottom, #7a8ef0, #5568d3);
    color: white;
    border: 2px outset #667eea;
    border-top-color: #9ba5f5;
    border-left-color: #9ba5f5;
    border-right-color: #4a5bc0;
    border-bottom-color: #4a5bc0;
    border-radius: 3px;
    cursor: pointer;
    transition: all 0.1s;
    text-decoration: none;
    display: inline-block;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
    box-shadow: 
        inset 1px 1px 0 rgba(255, 255, 255, 0.3),
        inset -1px -1px 0 rgba(0, 0, 0, 0.3),
        2px 2px 4px rgba(0, 0, 0, 0.3);
    font-weight: 600;
}

.btn:hover {
    background: linear-gradient(to bottom, #8b9ef5, #667eea);
    border-color: #667eea;
    border-top-color: #a5b0f8;
    border-left-color: #a5b0f8;
    border-right-color: #5568d3;
    border-bottom-color: #5568d3;
}

.btn:active {
    background: linear-gradient(to bottom, #4a5bc0, #667eea);
    border-style: inset;
    border-top-color: #4a5bc0;
    border-left-color: #4a5bc0;
    border-right-color: #9ba5f5;
    border-bottom-color: #9ba5f5;
    box-shadow: 
        inset 2px 2px 4px rgba(0, 0, 0, 0.4),
        inset -1px -1px 0 rgba(255, 255, 255, 0.2);
    transform: translate(1px, 1px);
}

.btn:disabled {
    background: linear-gradient(to bottom, #e0e0e0, #bdbdbd);
    color: #757575;
    border: 2px outset #bdbdbd;
    border-top-color: #e0e0e0;
    border-left-color: #e0e0e0;
    border-right-color: #9e9e9e;
    border-bottom-color: #9e9e9e;
    cursor: not-allowed;
    text-shadow: none;
    box-shadow: 
        inset 1px 1px 0 rgba(0, 0, 0, 0.1),
        inset -1px -1px 0 rgba(255, 255, 255, 0.1);
}

.promotion-btn {
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 60px;
    background: linear-gradient(to bottom, #7a8ef0, #5568d3) !important;
    color: white !important;
    border: 2px outset #667eea !important;
    border-top-color: #9ba5f5 !important;
    border-left-color: #9ba5f5 !important;
    border-right-color: #4a5bc0 !important;
    border-bottom-color: #4a5bc0 !important;
    border-radius: 3px !important;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
    box-shadow: 
        inset 1px 1px 0 rgba(255, 255, 255, 0.3),
        inset -1px -1px 0 rgba(0, 0, 0, 0.3),
        2px 2px 4px rgba(0, 0, 0, 0.3);
}

.promotion-btn:hover {
    background: linear-gradient(to bottom, #8b9ef5, #667eea) !important;
    border-top-color: #a5b0f8 !important;
    border-left-color: #a5b0f8 !important;
    border-right-color: #5568d3 !important;
    border-bottom-color: #5568d3 !important;
}

.promotion-btn:active {
    background: linear-gradient(to bottom, #4a5bc0, #667eea) !important;
    border-style: inset !important;
    transform: translate(1px, 1px);
}

.promotion-btn.btn-gray {
    background: linear-gradient(to bottom, #bdbdbd, #9e9e9e) !important;
    color: white;
    border: 2px outset #9e9e9e !important;
    border-top-color: #e0e0e0 !important;
    border-left-color: #e0e0e0 !important;
    border-right-color: #757575 !important;
    border-bottom-color: #757575 !important;
}

.promotion-btn.btn-gray:hover {
    background: linear-gradient(to bottom, #e0e0e0, #bdbdbd) !important;
    border-top-color: #f5f5f5 !important;
    border-left-color: #f5f5f5 !important;
    border-right-color: #9e9e9e !important;
    border-bottom-color: #9e9e9e !important;
}

/* Legacy styles for promotion button when not in top controls (kept for compatibility) */
.promotion-btn.white {
    background: linear-gradient(to bottom, #7a8ef0, #5568d3) !important;
    color: white !important;
    border: 2px outset #667eea !important;
    border-top-color: #9ba5f5 !important;
    border-left-color: #9ba5f5 !important;
    border-right-color: #4a5bc0 !important;
    border-bottom-color: #4a5bc0 !important;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
    box-shadow: 
        inset 1px 1px 0 rgba(255, 255, 255, 0.3),
        inset -1px -1px 0 rgba(0, 0, 0, 0.3),
        2px 2px 4px rgba(0, 0, 0, 0.3);
}

.promotion-btn.white:hover {
    background: linear-gradient(to bottom, #8b9ef5, #667eea) !important;
    border-top-color: #a5b0f8 !important;
    border-left-color: #a5b0f8 !important;
    border-right-color: #5568d3 !important;
    border-bottom-color: #5568d3 !important;
}

.promotion-btn.white:active {
    background: linear-gradient(to bottom, #4a5bc0, #667eea) !important;
    border-style: inset !important;
    transform: translate(1px, 1px);
}

.promotion-btn.black {
    background: linear-gradient(to bottom, #7a8ef0, #5568d3) !important;
    color: white !important;
    border: 2px outset #667eea !important;
    border-top-color: #9ba5f5 !important;
    border-left-color: #9ba5f5 !important;
    border-right-color: #4a5bc0 !important;
    border-bottom-color: #4a5bc0 !important;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
    box-shadow: 
        inset 1px 1px 0 rgba(255, 255, 255, 0.3),
        inset -1px -1px 0 rgba(0, 0, 0, 0.3),
        2px 2px 4px rgba(0, 0, 0, 0.3);
}

.promotion-btn.black:hover {
    background: linear-gradient(to bottom, #8b9ef5, #667eea) !important;
    border-top-color: #a5b0f8 !important;
    border-left-color: #a5b0f8 !important;
    border-right-color: #5568d3 !important;
    border-bottom-color: #5568d3 !important;
}

.promotion-btn.black:active {
    background: linear-gradient(to bottom, #4a5bc0, #667eea) !important;
    border-style: inset !important;
    transform: translate(1px, 1px);
}

.promotion-piece-img {
    display: block;
    width: 20px;
    height: 20px;
    object-fit: contain;
    margin: 0;
}

/* Button variants matching chessboard theme - 90's style */
.btn-info {
    background: linear-gradient(to bottom, #26d0ce, #00D1B2);
    color: #0a0a0a;
    border: 2px outset #00D1B2;
    border-top-color: #4dd0e1;
    border-left-color: #4dd0e1;
    border-right-color: #0097a7;
    border-bottom-color: #0097a7;
    text-shadow: 1px 1px 1px rgba(255, 255, 255, 0.5);
}

.btn-info:hover {
    background: linear-gradient(to bottom, #4dd0e1, #26d0ce);
    border-top-color: #80deea;
    border-left-color: #80deea;
    border-right-color: #00D1B2;
    border-bottom-color: #00D1B2;
}

.btn-info:active {
    background: linear-gradient(to bottom, #0097a7, #00D1B2);
    border-style: inset;
    transform: translate(1px, 1px);
}

.btn-success {
    background: linear-gradient(to bottom, #66bb6a, #4caf50);
    color: white;
    border: 2px outset #4caf50;
    border-top-color: #81c784;
    border-left-color: #81c784;
    border-right-color: #388e3c;
    border-bottom-color: #388e3c;
}

.btn-success:hover {
    background: linear-gradient(to bottom, #81c784, #66bb6a);
    border-top-color: #a5d6a7;
    border-left-color: #a5d6a7;
    border-right-color: #4caf50;
    border-bottom-color: #4caf50;
}

.btn-success:active {
    background: linear-gradient(to bottom, #388e3c, #4caf50);
    border-style: inset;
    transform: translate(1px, 1px);
}

.btn-danger {
    background: linear-gradient(to bottom, #ef5350, #f44336);
    color: white;
    border: 2px outset #f44336;
    border-top-color: #e57373;
    border-left-color: #e57373;
    border-right-color: #c62828;
    border-bottom-color: #c62828;
}

.btn-danger:hover {
    background: linear-gradient(to bottom, #e57373, #ef5350);
    border-top-color: #ef9a9a;
    border-left-color: #ef9a9a;
    border-right-color: #f44336;
    border-bottom-color: #f44336;
}

.btn-danger:active {
    background: linear-gradient(to bottom, #c62828, #f44336);
    border-style: inset;
    transform: translate(1px, 1px);
}

.btn-warning {
    background: linear-gradient(to bottom, #ffb74d, #ff9800);
    color: #0a0a0a;
    border: 2px outset #ff9800;
    border-top-color: #ffcc80;
    border-left-color: #ffcc80;
    border-right-color: #f57c00;
    border-bottom-color: #f57c00;
    text-shadow: 1px 1px 1px rgba(255, 255, 255, 0.5);
}

.btn-warning:hover {
    background: linear-gradient(to bottom, #ffcc80, #ffb74d);
    border-top-color: #ffe0b2;
    border-left-color: #ffe0b2;
    border-right-color: #ff9800;
    border-bottom-color: #ff9800;
}

.btn-warning:active {
    background: linear-gradient(to bottom, #f57c00, #ff9800);
    border-style: inset;
    transform: translate(1px, 1px);
}

.btn-light {
    background: linear-gradient(to bottom, #ffffff, #f5f5f5);
    color: #0a0a0a;
    border: 2px outset #f5f5f5;
    border-top-color: #ffffff;
    border-left-color: #ffffff;
    border-right-color: #e0e0e0;
    border-bottom-color: #e0e0e0;
    text-shadow: none;
}

.btn-light:hover {
    background: linear-gradient(to bottom, #ffffff, #fafafa);
    border-top-color: #ffffff;
    border-left-color: #ffffff;
    border-right-color: #f5f5f5;
    border-bottom-color: #f5f5f5;
}

.btn-light:active {
    background: linear-gradient(to bottom, #e0e0e0, #f5f5f5);
    border-style: inset;
    transform: translate(1px, 1px);
}

.delete-drag-mode {
    cursor: grab;
}

.btn-gray {
    background: linear-gradient(to bottom, #bdbdbd, #9e9e9e);
    color: white;
    border: 2px outset #9e9e9e;
    border-top-color: #e0e0e0;
    border-left-color: #e0e0e0;
    border-right-color: #757575;
    border-bottom-color: #757575;
}

.btn-gray:hover {
    background: linear-gradient(to bottom, #e0e0e0, #bdbdbd);
    border-top-color: #f5f5f5;
    border-left-color: #f5f5f5;
    border-right-color: #9e9e9e;
    border-bottom-color: #9e9e9e;
}

.btn-gray:active {
    background: linear-gradient(to bottom, #757575, #9e9e9e);
    border-style: inset;
    transform: translate(1px, 1px);
}

.btn-secondary {
    background: linear-gradient(to bottom, #9e9e9e, #757575);
    color: white;
    border: 2px outset #757575;
    border-top-color: #bdbdbd;
    border-left-color: #bdbdbd;
    border-right-color: #616161;
    border-bottom-color: #616161;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

.btn-secondary:hover {
    background: linear-gradient(to bottom, #bdbdbd, #9e9e9e);
    border-top-color: #e0e0e0;
    border-left-color: #e0e0e0;
    border-right-color: #757575;
    border-bottom-color: #757575;
}

.btn-secondary:active {
    background: linear-gradient(to bottom, #616161, #757575);
    border-style: inset;
    transform: translate(1px, 1px);
}

/* Purple buttons for replay controls - 90's style */
.btn-purple {
    background: linear-gradient(to bottom, #ba68c8, #9c27b0);
    color: white;
    border: 2px outset #9c27b0;
    border-top-color: #ce93d8;
    border-left-color: #ce93d8;
    border-right-color: #7b1fa2;
    border-bottom-color: #7b1fa2;
    font-size: 1.5em;
    padding: 10px 15px;
    min-width: 50px;
    min-height: 50px;
    border-radius: 3px;
    cursor: pointer;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
    box-shadow: 
        inset 1px 1px 0 rgba(255, 255, 255, 0.3),
        inset -1px -1px 0 rgba(0, 0, 0, 0.3),
        2px 2px 4px rgba(0, 0, 0, 0.3);
    font-weight: 600;
}

.btn-purple:hover {
    background: linear-gradient(to bottom, #ce93d8, #ba68c8);
    border-top-color: #e1bee7;
    border-left-color: #e1bee7;
    border-right-color: #9c27b0;
    border-bottom-color: #9c27b0;
}

.btn-purple:active {
    background: linear-gradient(to bottom, #7b1fa2, #9c27b0);
    border-style: inset;
    transform: translate(1px, 1px);
}

/* Replay control buttons - small gray style */
.replay-btn.btn-purple {
    background: linear-gradient(to bottom, #9e9e9e, #757575);
    color: white;
    border: 2px outset #757575;
    border-top-color: #bdbdbd;
    border-left-color: #bdbdbd;
    border-right-color: #616161;
    border-bottom-color: #616161;
    font-size: 0.9em;
    padding: 4px 8px;
    min-width: 32px;
    min-height: 32px;
    border-radius: 3px;
    cursor: pointer;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
    box-shadow: 
        inset 1px 1px 0 rgba(255, 255, 255, 0.3),
        inset -1px -1px 0 rgba(0, 0, 0, 0.3),
        2px 2px 4px rgba(0, 0, 0, 0.3);
    font-weight: 600;
}

.replay-btn.btn-purple:hover {
    background: linear-gradient(to bottom, #bdbdbd, #9e9e9e);
    border-top-color: #e0e0e0;
    border-left-color: #e0e0e0;
    border-right-color: #757575;
    border-bottom-color: #757575;
}

.replay-btn.btn-purple:active {
    background: linear-gradient(to bottom, #616161, #757575);
    border-style: inset;
    transform: translate(1px, 1px);
}

.replay-btn.btn-purple:disabled {
    background: linear-gradient(to bottom, #bdbdbd, #9e9e9e);
    color: #666;
    border: 2px outset #9e9e9e;
    border-top-color: #d0d0d0;
    border-left-color: #d0d0d0;
    border-right-color: #808080;
    border-bottom-color: #808080;
    cursor: not-allowed;
    opacity: 0.6;
    box-shadow: 
        inset 1px 1px 0 rgba(255, 255, 255, 0.2),
        inset -1px -1px 0 rgba(0, 0, 0, 0.2),
        1px 1px 2px rgba(0, 0, 0, 0.2);
}

/* Red replay button for delete */
.replay-btn.btn-danger {
    background: linear-gradient(to bottom, #ef5350, #f44336);
    color: white;
    border: 2px outset #f44336;
    border-top-color: #e57373;
    border-left-color: #e57373;
    border-right-color: #c62828;
    border-bottom-color: #c62828;
    font-size: 0.9em;
    padding: 4px 8px;
    min-width: 32px;
    min-height: 32px;
    border-radius: 3px;
    cursor: pointer;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
    box-shadow: 
        inset 1px 1px 0 rgba(255, 255, 255, 0.3),
        inset -1px -1px 0 rgba(0, 0, 0, 0.3),
        2px 2px 4px rgba(0, 0, 0, 0.3);
    font-weight: 600;
}

.replay-btn.btn-danger:hover {
    background: linear-gradient(to bottom, #e57373, #ef5350);
    border-top-color: #ef9a9a;
    border-left-color: #ef9a9a;
    border-right-color: #f44336;
    border-bottom-color: #f44336;
}

.replay-btn.btn-danger:active {
    background: linear-gradient(to bottom, #c62828, #f44336);
    border-style: inset;
    transform: translate(1px, 1px);
}

.lobby-actions {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin-top: 10px;
}

.lobby-action {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.lobby-action .btn {
    width: 100%;
}

.lobby-action .action-help {
    color: #666;
    font-size: 0.9em;
}

#game-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: clamp(5px, 1.5vw, 10px);
    flex-wrap: wrap;
    margin-top: 10px;
    width: 100%;
}

/* Drag mode styles removed - using 3-click confirmation instead */

/* Mobile-specific adjustments */
@media (max-width: 768px) {
    .container {
        padding: 10px 0;
        max-width: 100vw;
    }
    
    #game-layout-container {
        padding: 0 10px;
        box-sizing: border-box;
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    #chessboard-container {
        margin: 15px auto;
        width: 100%;
        max-width: min(560px, 90vw, calc(100vw - 40px));
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
    }
    
    #chessboard {
        width: 100%;
        max-width: min(560px, 90vw, calc(100vw - 40px));
        margin: 0 auto;
    }
    
    .player-name-display {
        width: 100%;
        max-width: min(560px, 90vw, calc(100vw - 40px));
        font-size: 0.6em;
    }
    
    .controls {
        width: 100%;
        max-width: min(560px, 90vw, calc(100vw - 40px));
        padding: 0 10px;
        box-sizing: border-box;
        margin: 20px auto 0;
    }
    
    #game-controls-container {
        width: 100%;
        max-width: min(560px, 90vw, calc(100vw - 40px));
        margin: 20px auto 0;
        display: flex;
        justify-content: center;
    }
    
    .square {
        font-size: clamp(20px, 4.5vw, 35px);
    }
    
    .piece {
        font-size: clamp(20px, 4.5vw, 35px);
    }

    .piece-img {
        width: 100%;
        height: 100%;
        max-width: 100%;
        max-height: 100%;
    }
    
    .status-text {
        padding: 0 10px;
    }
    
    .lobby-panel {
        padding: 20px 10px;
    }
}

/* Small mobile devices */
@media (max-width: 480px) {
    .container {
        padding: 8px 0;
        max-width: 100vw;
    }
    
    #game-layout-container {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    #chessboard-container {
        margin: 10px auto;
        width: 100%;
        max-width: min(560px, 90vw, calc(100vw - 40px));
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
    }
    
    #chessboard {
        width: 100%;
        max-width: min(560px, 90vw, calc(100vw - 40px));
        margin: 0 auto;
    }
    
    .player-name-display {
        width: 100vw;
        font-size: 0.55em;
    }
    
    .controls {
        width: 100%;
        max-width: min(560px, 90vw, calc(100vw - 40px));
        padding: 0 8px;
        box-sizing: border-box;
        margin: 20px auto 0;
    }
    
    #game-controls-container {
        width: 100%;
        max-width: min(560px, 90vw, calc(100vw - 40px));
        margin: 20px auto 0;
        display: flex;
        justify-content: center;
    }
    
    .square {
        font-size: clamp(18px, 4vw, 30px);
    }
    
    .piece {
        font-size: clamp(18px, 4vw, 30px);
    }

    .piece-img {
        width: 100%;
        height: 100%;
        max-width: 100%;
        max-height: 100%;
    }
    
    .btn {
        padding: 8px 16px;
        font-size: 0.9em;
    }
    
    .btn-primary {
        font-size: 1em;
        padding: 10px 20px;
    }
    
    .status-text {
        padding: 0 8px;
    }
    
    .lobby-panel {
        padding: 15px 8px;
    }
}

@media (max-width: 768px) {
    #game-layout-container {
        width: 100%;
        padding: 0 10px;
        box-sizing: border-box;
    }
    
    #game-left-panel {
        width: 100%;
    }
    
    #game-controls-top,
    .game-controls-nav {
        width: 100%;
        max-width: 100vw;
        padding: 0;
        box-sizing: border-box;
    }
}

/* Replay page */
#replay-board-container {
    display: flex;
    justify-content: center;
    margin: 15px 0;
}

#replay-board {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    grid-template-rows: repeat(8, 1fr);
    width: min(560px, 90vw, calc(100vw - 60px));
    aspect-ratio: 1;
    border: clamp(2px, 0.5vw, 3px) solid #333;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    box-sizing: border-box;
}

.replay-controls {
    margin: 15px 0;
}

.replay-controls .buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
}

.replay-controls .button {
    margin: 0;
    flex: 1 1 auto;
    min-width: 80px;
}

.replay-timeline {
    margin: 10px 0;
}

.replay-timeline input[type="range"] {
    width: 100%;
}

.replay-timeline-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 6px;
    color: #666;
    font-size: 0.9em;
}

.replay-move-bar {
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: 1fr;
    gap: 2px;
    margin: 10px 0 4px;
    width: 100%;
    height: 12px;
}

.replay-move-bar .segment {
    background: #ddd;
    border-radius: 2px;
}

.replay-move-bar .segment.start { background: #bbb; }
.replay-move-bar .segment.white { background: #e0f0ff; }
.replay-move-bar .segment.black { background: #ffe8d6; }
.replay-move-bar .segment.current {
    outline: 2px solid #4caf50;
    outline-offset: -1px;
}

/* Timer display styles */
.timer-display {
    font-family: 'Courier New', monospace;
    font-weight: 600;
    color: #ecf0f1;
    transition: color 0.3s;
    pointer-events: none;
}

.timer-display.timer-active {
    color: #4caf50;
    font-weight: 700;
}

.timer-display.timer-warning {
    color: #ff9800;
    animation: timer-pulse 1s infinite;
}

.timer-display.timer-warning.timer-active {
    color: #f44336;
    animation: timer-pulse 0.5s infinite;
}

@keyframes timer-pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

/* Tiny green dot for turn indicator */
.turn-indicator-dot {
    display: inline-block;
    width: 6px;
    height: 6px;
    background-color: #4caf50;
    border-radius: 50%;
    margin-left: 8px;
    vertical-align: middle;
}