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

body {
    font-family: 'Comic Sans MS', cursive, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-x: hidden;
    /* Mobile viewport fixes */
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
}

/* Page Management */
.page {
    display: none;
    width: 100%;
    max-width: 1000px;
    animation: fadeIn 0.5s ease-in;
}

.page.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.game-container {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    max-width: 800px;
    width: 100%;
    backdrop-filter: blur(10px);
}

.game-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    flex-wrap: wrap;
    gap: 20px;
}

.timer-section {
    text-align: center;
    background: linear-gradient(135deg, #ff9a9e 0%, #fecfef 100%);
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 10px 20px rgba(255, 154, 158, 0.3);
    transition: all 0.5s ease;
}

.timer-section.corner {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 10px 15px;
    border-radius: 10px;
    z-index: 1000;
    min-width: 120px;
    box-shadow: 0 5px 15px rgba(255, 154, 158, 0.4);
    /* Prevent mobile conflicts */
    max-width: 140px;
    box-sizing: border-box;
}

.timer-section.corner h2 {
    font-size: 0.9em;
    margin-bottom: 5px;
}

.timer-section.corner .timer {
    font-size: 1.5em;
    margin: 5px 0;
}

.timer-section.corner .start-btn,
.timer-section.corner .reset-btn {
    display: none;
}

.timer-section h2 {
    color: #d63384;
    margin-bottom: 10px;
    font-size: 1.3em;
}

.timer {
    font-size: 3em;
    font-weight: bold;
    color: #d63384;
    margin: 15px 0;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.start-btn, .reset-btn {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 25px;
    font-size: 1.1em;
    font-weight: bold;
    cursor: pointer;
    margin: 5px;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(245, 87, 108, 0.3);
}

.start-btn:hover, .reset-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(245, 87, 108, 0.4);
}

.score-section {
    display: flex;
    align-items: center;
    gap: 20px;
    background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
    padding: 15px 25px;
    border-radius: 15px;
    box-shadow: 0 10px 20px rgba(168, 237, 234, 0.3);
    flex-wrap: wrap;
    justify-content: center;
}

.player-score {
    display: flex;
    align-items: center;
    gap: 10px;
    text-align: center;
}

.player-score h3 {
    color: #4a90e2;
    margin: 0;
    font-size: 1.1em;
    white-space: nowrap;
}

.piece-count {
    font-size: 1.8em;
    font-weight: bold;
    color: #2c3e50;
    background: rgba(255, 255, 255, 0.7);
    padding: 8px 15px;
    border-radius: 12px;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
    min-width: 40px;
}

.current-turn {
    text-align: center;
    font-size: 1.2em;
    font-weight: bold;
    color: #5a67d8;
    background: rgba(255, 255, 255, 0.8);
    padding: 12px 18px;
    border-radius: 15px;
    border: 3px solid #5a67d8;
    animation: pulse 2s infinite;
    white-space: nowrap;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.chess-board-container {
    display: flex;
    justify-content: center;
    margin-bottom: 30px;
}

.chess-board {
    display: grid;
    grid-template-columns: repeat(8, 60px);
    grid-template-rows: repeat(8, 60px);
    border: 4px solid #5a67d8;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 15px 30px rgba(90, 103, 216, 0.3);
}

.square {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5em;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.square.light {
    background: linear-gradient(135deg, #ffeaa7 0%, #fab1a0 100%);
}

.square.dark {
    background: linear-gradient(135deg, #74b9ff 0%, #0984e3 100%);
}

.square:hover {
    transform: scale(1.1);
    z-index: 10;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.square.selected {
    background: linear-gradient(135deg, #fd79a8 0%, #fdcb6e 100%) !important;
    transform: scale(1.1);
    z-index: 10;
    box-shadow: 0 0 20px rgba(253, 121, 168, 0.6);
    animation: glow 1s infinite alternate;
}

@keyframes glow {
    from { box-shadow: 0 0 20px rgba(253, 121, 168, 0.6); }
    to { box-shadow: 0 0 30px rgba(253, 121, 168, 0.8); }
}

.square.possible-move {
    background: linear-gradient(135deg, #55efc4 0%, #81ecec 100%) !important;
    animation: bounce 0.5s infinite alternate;
}

@keyframes bounce {
    from { transform: scale(1); }
    to { transform: scale(1.05); }
}

.game-status {
    text-align: center;
    font-size: 1.4em;
    font-weight: bold;
    color: #2c3e50;
    background: linear-gradient(135deg, #dda0dd 0%, #98fb98 100%);
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 10px 20px rgba(221, 160, 221, 0.3);
    border: 2px solid #dda0dd;
}

.winner {
    animation: celebration 2s infinite;
    background: linear-gradient(135deg, #ffd700 0%, #ff6347 100%) !important;
    color: white !important;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

@keyframes celebration {
    0%, 100% { transform: scale(1) rotate(0deg); }
    25% { transform: scale(1.05) rotate(1deg); }
    75% { transform: scale(1.05) rotate(-1deg); }
}

.piece {
    user-select: none;
    transition: all 0.3s ease;
}

.piece:hover {
    filter: brightness(1.2) drop-shadow(0 0 10px rgba(255, 255, 255, 0.8));
}

/* Responsive design */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }
    
    .game-container {
        padding: 15px;
    }
    
    .game-info {
        flex-direction: column;
        gap: 15px;
    }
    
    .score-section {
        gap: 10px;
        padding: 10px 15px;
        flex-direction: column;
    }
    
    .player-score {
        justify-content: center;
    }
    
    .current-turn {
        font-size: 1em;
        padding: 8px 12px;
    }
    
    .chess-board {
        grid-template-columns: repeat(8, 40px);
        grid-template-rows: repeat(8, 40px);
    }
    
    .square {
        width: 40px;
        height: 40px;
        font-size: 1.8em;
    }
    
    .timer {
        font-size: 2em;
    }
    
    /* Corner timer mobile adjustments */
    .timer-section.corner {
        top: 10px;
        right: 10px;
        padding: 8px 12px;
        min-width: 100px;
        border-radius: 8px;
    }
    
    .timer-section.corner h2 {
        font-size: 0.8em;
        margin-bottom: 3px;
    }
    
    .timer-section.corner .timer {
        font-size: 1.2em;
        margin: 3px 0;
    }
    
    .main-btn {
        min-width: 120px;
        font-size: 1em;
        padding: 12px 24px;
    }
    
    .main-header h1 {
        font-size: 2.2em;
    }
    
    .tagline {
        font-size: 1.1em;
    }
    
    .game-features {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .feature-card {
        padding: 20px;
    }
    
    .feature-icon {
        font-size: 2.5em;
    }
    
    .final-scores {
        flex-direction: column;
        gap: 15px;
    }
    
    .final-count {
        font-size: 3em;
    }
    
    .page-header {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }
    
    .page-header h1 {
        font-size: 2em;
    }
    
    .game-header {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }
    
    .game-header h1 {
        font-size: 2em;
    }
    
    .header-spacer {
        display: none;
    }
    
    .menu-container,
    .rules-container,
    .results-container {
        padding: 20px;
    }
    
    .rule-section {
        padding: 15px;
    }
    
    .rule-section h3 {
        font-size: 1.2em;
    }
    
    .rule-section p {
        font-size: 1em;
    }
}

/* Extra small screens */
@media (max-width: 480px) {
    body {
        padding: 5px;
    }
    
    .chess-board {
        grid-template-columns: repeat(8, 35px);
        grid-template-rows: repeat(8, 35px);
    }
    
    .square {
        width: 35px;
        height: 35px;
        font-size: 1.5em;
    }
    
    .timer-section.corner {
        top: 5px;
        right: 5px;
        padding: 6px 10px;
        min-width: 80px;
        max-width: 100px;
    }
    
    .timer-section.corner h2 {
        font-size: 0.7em;
        margin-bottom: 2px;
    }
    
    .timer-section.corner .timer {
        font-size: 1em;
        margin: 2px 0;
    }
    
    .main-header h1 {
        font-size: 1.8em;
    }
    
    .tagline {
        font-size: 1em;
    }
    
    .feature-card {
        padding: 15px;
    }
    
    .feature-icon {
        font-size: 2em;
    }
    
    .main-btn {
        min-width: 100px;
        font-size: 0.9em;
        padding: 10px 20px;
    }
}

/* Landscape mobile orientation */
@media (max-width: 768px) and (orientation: landscape) {
    body {
        padding: 10px 5px;
    }
    
    .game-container,
    .menu-container,
    .rules-container,
    .results-container {
        padding: 15px;
    }
    
    .chess-board {
        grid-template-columns: repeat(8, 38px);
        grid-template-rows: repeat(8, 38px);
    }
    
    .square {
        width: 38px;
        height: 38px;
        font-size: 1.7em;
    }
    
    .timer-section.corner {
        top: 8px;
        right: 8px;
        padding: 6px 10px;
    }
    
    .game-info {
        gap: 10px;
    }
    
    .score-section {
        padding: 8px 15px;
        flex-direction: row;
        justify-content: space-around;
    }
}

/* Main Menu Styles */
.menu-container {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    text-align: center;
}

.main-header h1 {
    color: #5a67d8;
    font-size: 3.5em;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
    margin-bottom: 10px;
}

.tagline {
    color: #667eea;
    font-size: 1.4em;
    font-weight: bold;
    margin-bottom: 40px;
}

.game-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.feature-card {
    background: linear-gradient(135deg, #ff9a9e 0%, #fecfef 50%, #a8edea 100%);
    padding: 30px;
    border-radius: 20px;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
}

.feature-icon {
    font-size: 3em;
    margin-bottom: 15px;
}

.feature-card h3 {
    color: #2c3e50;
    font-size: 1.5em;
    margin-bottom: 10px;
}

.feature-card p {
    color: #5a67d8;
    font-size: 1.1em;
    line-height: 1.4;
}

.menu-actions {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.main-btn {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
    border: none;
    padding: 18px 36px;
    border-radius: 25px;
    font-size: 1.3em;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 8px 20px rgba(245, 87, 108, 0.3);
    min-width: 200px;
}

.main-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(245, 87, 108, 0.4);
}

.main-btn.secondary {
    background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
    color: #2c3e50;
    box-shadow: 0 8px 20px rgba(168, 237, 234, 0.3);
}

.main-btn.secondary:hover {
    box-shadow: 0 12px 30px rgba(168, 237, 234, 0.4);
}

/* Rules Page Styles */
.rules-container {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 30px;
    flex-wrap: wrap;
    gap: 20px;
}

.page-header h1 {
    color: #5a67d8;
    font-size: 2.5em;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.back-btn {
    background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
    color: #2c3e50;
    border: none;
    padding: 12px 24px;
    border-radius: 25px;
    font-size: 1.1em;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(168, 237, 234, 0.3);
}

.back-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(168, 237, 234, 0.4);
}

.rules-content {
    display: grid;
    gap: 25px;
    margin-bottom: 30px;
}

.rule-section {
    background: linear-gradient(135deg, #ffeaa7 0%, #fab1a0 20%, #74b9ff 80%, #0984e3 100%);
    padding: 25px;
    border-radius: 15px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.rule-section h3 {
    color: #2c3e50;
    font-size: 1.4em;
    margin-bottom: 15px;
}

.rule-section p {
    color: #2c3e50;
    font-size: 1.1em;
    line-height: 1.6;
}

.rules-actions {
    text-align: center;
}

/* Results Page Styles */
.results-container {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    text-align: center;
}

.results-header h1 {
    color: #5a67d8;
    font-size: 3em;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
    margin-bottom: 15px;
    animation: celebration 2s infinite;
}

.winner-subtitle {
    color: #f093fb;
    font-size: 1.5em;
    font-weight: bold;
    margin-bottom: 40px;
}

.final-scores {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 30px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.final-score {
    background: linear-gradient(135deg, #dda0dd 0%, #98fb98 100%);
    padding: 30px;
    border-radius: 20px;
    box-shadow: 0 15px 30px rgba(221, 160, 221, 0.3);
    min-width: 200px;
}

.player-name {
    color: #2c3e50;
    font-size: 1.3em;
    font-weight: bold;
    margin-bottom: 15px;
}

.final-count {
    color: #5a67d8;
    font-size: 4em;
    font-weight: bold;
    margin-bottom: 5px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.pieces-label {
    color: #667eea;
    font-size: 1.1em;
    font-weight: bold;
}

.vs-divider {
    color: #f093fb;
    font-size: 2em;
    font-weight: bold;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.results-actions {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Game Page Header Updates */
.game-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 30px;
    flex-wrap: wrap;
    gap: 20px;
}

.game-header h1 {
    color: #5a67d8;
    font-size: 2.5em;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
    margin: 0;
}

.header-spacer {
    width: 100px; /* Balance the back button */
}