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

.landscape-prompt {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #1a4d2e;
    z-index: 10000;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 20px;
}

.landscape-content {
    max-width: 400px;
}

.rotate-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    animation: rotate 2s infinite ease-in-out;
}

@keyframes rotate {
    0%, 100% { transform: rotate(0deg); }
    50% { transform: rotate(90deg); }
}

.landscape-content h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #fff;
}

.landscape-content p {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.5;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #1a4d2e;
    min-height: 100vh;
    color: #fff;
    overflow-x: auto;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

/* Game Container */
.game-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
}

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

.header-left h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.game-stats {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.stat {
    background: rgba(255,255,255,0.1);
    padding: 8px 16px;
    border-radius: 20px;
    backdrop-filter: blur(10px);
}

.stat-label {
    font-weight: bold;
    margin-right: 5px;
}

.header-right {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 25px;
    font-size: 14px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    box-shadow: none;
    outline: none;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(45deg, #ff6b6b, #ee5a24);
    color: white;
}

.btn-primary:hover {
    background: linear-gradient(45deg, #ee5a24, #ff6b6b);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.3);
}

.btn-secondary {
    background: rgba(255,255,255,0.2);
    color: white;
    border: 1px solid rgba(255,255,255,0.3);
}

.btn-secondary:hover {
    background: rgba(255,255,255,0.3);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.3);
}

.game-board {
    display: grid;
    grid-template-areas: 
        "foundation stock"
        "tableau tableau";
    grid-template-columns: 1fr auto;
    gap: 30px;
    margin-bottom: 30px;
}

.foundation-area {
    grid-area: foundation;
    display: flex;
    gap: 15px;
    justify-content: flex-start;
}

.foundation-pile {
    width: 132px;
    height: 185px;
    border: 2px dashed rgba(255,255,255,0.3);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.1);
    position: relative;
}

.pile-placeholder {
    font-size: 24px;
    opacity: 0.5;
    font-weight: bold;
}

.stock-area {
    grid-area: stock;
    display: flex;
    gap: 8px;
    align-items: flex-start;
    position: relative;
    perspective: 1000px;
    padding: 10px;
}

.stock-pile, .waste-pile {
    width: 132px;
    height: 185px;
    border-radius: 8px;
    position: relative;
    cursor: pointer;
    transform-style: preserve-3d;
    transition: all 0.3s ease;
}

.stock-pile {
    background: rgba(255,255,255,0.1);
    border: 2px solid rgba(255,255,255,0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow:
        2px 0 4px rgba(0,0,0,0.3),
        4px 0 8px rgba(0,0,0,0.2),
        6px 0 12px rgba(0,0,0,0.1);
}

.stock-pile:hover {
    background: rgba(255,255,255,0.15);
    border-color: rgba(255,255,255,0.4);
    box-shadow:
        2px 0 6px rgba(0,0,0,0.4),
        4px 0 10px rgba(0,0,0,0.3),
        6px 0 14px rgba(0,0,0,0.2);
}

.card-back {
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, #8B0000, #DC143C);
    border-radius: 6px;
    border: 2px solid #fff;
    position: relative;
    overflow: hidden;
    box-shadow: inset 0 0 10px rgba(0,0,0,0.3);
}

.card-back::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60%;
    height: 60%;
    background: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 2px,
        rgba(255,255,255,0.1) 2px,
        rgba(255,255,255,0.1) 4px
    );
    border-radius: 4px;
}

.waste-pile {
    background: rgba(255,255,255,0.05);
    border: 2px solid rgba(255,255,255,0.2);
    box-shadow:
        -2px 0 4px rgba(0,0,0,0.3),
        -4px 0 8px rgba(0,0,0,0.2),
        -6px 0 12px rgba(0,0,0,0.1);
}

.waste-pile:hover {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.3);
}

.tableau-area {
    grid-area: tableau;
    display: flex;
    gap: 15px;
    justify-content: center;
    margin-top: 20px;
}

.tableau-pile {
    width: 132px;
    min-height: 185px;
    border: 2px dashed rgba(255,255,255,0.2);
    border-radius: 8px;
    background: rgba(255,255,255,0.05);
    position: relative;
}

/* Card Styles */
.card {
    width: 128px;
    height: 181px;
    background: white;
    border-radius: 8px;
    border: 1px solid #ccc;
    position: absolute;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 6px;
    font-size: 18px;
    font-weight: bold;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.card.face-down {
    background: linear-gradient(45deg, #8B0000, #DC143C);
    color: transparent;
}

.card.face-down::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60%;
    height: 60%;
    background: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 2px,
        rgba(255,255,255,0.1) 2px,
        rgba(255,255,255,0.1) 4px
    );
    border-radius: 4px;
}

.card.red {
    color: #dc143c;
}

.card.black {
    color: #000;
}

.card-top, .card-bottom {
    display: flex;
    align-items: center;
    gap: 2px;
}

.card-bottom {
    transform: rotate(180deg);
    align-self: flex-end;
}

.card-center {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
}

/* Dragging States */
.card.dragging {
    z-index: 9999 !important;
    pointer-events: none;
    position: fixed !important;
    box-shadow: 0 12px 24px rgba(0,0,0,0.6);
    transform: scale(1.05);
    transition: none !important;
}

.card.drag-placeholder {
    opacity: 0.3;
    background: rgba(255, 255, 255, 0.1) !important;
    border: 2px dashed rgba(255, 255, 255, 0.5) !important;
}

.card.draggable-card {
    cursor: grab;
    transition: all 0.2s ease;
}

.card.draggable-card:hover:not(.dragging) {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.3);
}

.card.draggable-card:active {
    cursor: grabbing;
}

.tableau-pile .card.dragging ~ .card.dragging {
    z-index: 9998 !important;
    pointer-events: none;
    position: fixed !important;
    box-shadow: 0 8px 16px rgba(0,0,0,0.5);
    transform: scale(1.05);
}

.foundation-pile:hover,
.tableau-pile:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.5);
    transition: all 0.2s ease;
}

.drop-zone-valid {
    background: rgba(0, 255, 0, 0.2) !important;
    border: 2px solid rgba(0, 255, 0, 0.6) !important;
    box-shadow: 0 0 10px rgba(0, 255, 0, 0.4) !important;
}

.drop-zone-invalid {
    background: rgba(255, 0, 0, 0.1) !important;
    border: 2px solid rgba(255, 0, 0, 0.4) !important;
}

.card.book-flip {
    transform-style: preserve-3d;
    transition: transform 0.6s ease;
    transform-origin: right center;
}

.card.book-flip-start {
    transform: rotateY(0deg);
}

.card.book-flip-middle {
    transform: rotateY(90deg);
}

.card.book-flip-end {
    transform: rotateY(180deg);
}

.waste-pile .card {
    box-shadow:
        -2px 0 4px rgba(0,0,0,0.3),
        -1px 0 2px rgba(0,0,0,0.2);
}

.stock-pile .card-back {
    box-shadow:
        2px 0 4px rgba(0,0,0,0.3),
        1px 0 2px rgba(0,0,0,0.2),
        inset 0 0 10px rgba(0,0,0,0.3);
}

.stock-count {
    font-family: 'Arial', sans-serif;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.8);
    border: 1px solid rgba(255,255,255,0.3);
}

.stock-area::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(
        to bottom,
        transparent 0%,
        rgba(255,255,255,0.1) 20%,
        rgba(255,255,255,0.2) 50%,
        rgba(255,255,255,0.1) 80%,
        transparent 100%
    );
    transform: translateX(-50%);
    z-index: 5;
}

/* Flip animation */
.card.flipping {
    transform-style: preserve-3d;
    transition: transform 0.3s ease;
}

.card.flip-start {
    transform: rotateY(180deg);
}

.card.flip-middle {
    transform: rotateY(90deg);
}

.card.flip-end {
    transform: rotateY(0deg);
}

.card.flying {
    z-index: 10000 !important;
    pointer-events: none;
    position: fixed !important;
    transition: all 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94) !important;
    box-shadow: 0 8px 25px rgba(0,0,0,0.4);
    transform: scale(1.05);
}

.card.flying-fast {
    z-index: 10000 !important;
    pointer-events: none;
    position: fixed !important;
    transition: all 0.08s cubic-bezier(0.25, 0.46, 0.45, 0.94) !important;
    box-shadow: 0 8px 25px rgba(255, 215, 0, 0.6);
    transform: scale(1.02);
}

.card.moving-to-foundation {
    transform: scale(1.05);
    box-shadow: 0 0 15px rgba(255, 215, 0, 0.8);
    transition: all 0.15s ease;
}

.card.moving-to-tableau {
    transform: scale(1.02);
    box-shadow: 0 0 10px rgba(0, 255, 0, 0.6);
    transition: all 0.3s ease;
}

.card.card-returning {
    z-index: 8888 !important;
    pointer-events: none;
    position: fixed !important;
    transition: all 0.3s ease-out !important;
}

.pile.drag-over {
    background: rgba(255,255,0,0.3);
    border-color: #ffff00;
}

/* Game Messages */
.game-message {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    backdrop-filter: blur(5px);
}

.message-content {
    background: linear-gradient(135deg, #2d5016, #4a7c59);
    padding: 40px;
    border-radius: 20px;
    text-align: center;
    max-width: 400px;
    border: 2px solid rgba(255,255,255,0.2);
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.message-content h2 {
    margin-bottom: 20px;
    font-size: 2rem;
    color: #fff;
}

.message-content p {
    margin-bottom: 20px;
    font-size: 1.1rem;
    color: rgba(255,255,255,0.9);
}

.message-stats {
    margin: 20px 0;
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 10px;
}

.message-stats div {
    background: rgba(255,255,255,0.1);
    padding: 8px 12px;
    border-radius: 15px;
    font-size: 14px;
}

.message-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}



/* Help Panel */
.help-panel {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    backdrop-filter: blur(5px);
}

.help-content {
    background: linear-gradient(135deg, #2d5016, #4a7c59);
    padding: 0;
    border-radius: 20px;
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    border: 2px solid rgba(255,255,255,0.2);
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.help-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 30px;
    border-bottom: 1px solid rgba(255,255,255,0.2);
    background: rgba(255,255,255,0.1);
}

.help-header h3 {
    margin: 0;
    font-size: 1.6rem;
    color: #fff;
}

.help-body {
    padding: 20px 30px;
    overflow-y: auto;
    flex: 1;
}

.help-footer {
    padding: 20px 30px;
    border-top: 1px solid rgba(255,255,255,0.2);
    background: rgba(255,255,255,0.1);
    text-align: center;
}

.help-section {
    margin-bottom: 25px;
}

.help-section h4 {
    margin-bottom: 10px;
    color: #fff;
    font-size: 1.2rem;
    border-bottom: 1px solid rgba(255,255,255,0.3);
    padding-bottom: 5px;
}

.help-section p {
    color: rgba(255,255,255,0.9);
    line-height: 1.5;
    margin-bottom: 10px;
}

.help-section ul {
    color: rgba(255,255,255,0.9);
    padding-left: 20px;
}

.help-section li {
    margin-bottom: 8px;
    line-height: 1.4;
}

.help-section strong {
    color: #fff;
}

.challenge-notice {
    background: rgba(255, 193, 7, 0.2);
    border: 1px solid rgba(255, 193, 7, 0.5);
    border-radius: 10px;
    padding: 15px;
    margin-top: 20px;
}

.challenge-notice h4 {
    color: #ffc107;
    border-bottom-color: rgba(255, 193, 7, 0.5);
}

.close-btn {
    background: none;
    border: none;
    color: rgba(255,255,255,0.7);
    font-size: 24px;
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.close-btn:hover {
    background: rgba(255,255,255,0.2);
    color: #fff;
}

/* Hidden Class */
.hidden {
    display: none !important;
}

/* Touch and Mobile Optimizations */
* {
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

.card {
    touch-action: none;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    user-select: none;
}

.card.draggable-card {
    touch-action: none;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    user-select: none;
}
@media (max-width:1024px){
    .game-header {
        margin-bottom: 10px;
    }

    .game-container{
        padding: 10px;
    }

    .header-left h1{
        font-size: 1.5rem;
    }
    .btn,.stat{
        padding: 5px 10px;
        font-size: 12px;
    }

    .game-board{
        gap: 10px;
    }

    .tableau-area{
        margin-top: 0;
    }

    .foundation-pile,.stock-pile, .waste-pile,.tableau-pile,.card{
        width: 66px;
        height: 93px;
        font-size: 14px;
        min-height: 93px;
    }
    .card{
        padding: 0 2px;
    }
}

/* Improve touch targets for mobile */
@media (max-width: 768px) {
    .card {
        min-height: 80px;
        min-width: 60px;
    }

    .card.draggable-card:hover:not(.dragging) {
        transform: none;
        box-shadow: 0 2px 4px rgba(0,0,0,0.2);
    }

    .card.dragging {
        transform: scale(1.1);
        box-shadow: 0 8px 16px rgba(0,0,0,0.4);
    }
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .help-content {
        max-width: 95%;
        max-height: 95vh;
    }

    .help-header, .help-body, .help-footer {
        padding: 15px 20px;
    }

    .help-header h3 {
        font-size: 1.3rem;
    }

    .help-section h4 {
        font-size: 1.1rem;
    }

    .help-section ul {
        padding-left: 15px;
    }
}

/* Hint Styles */
.card-hint {
    animation: pulse 1s infinite;
    border: 2px solid #ffff00 !important;
    box-shadow: 0 0 15px rgba(255, 255, 0, 0.7) !important;
}

.pile-hint {
    animation: pulse 1s infinite;
    border-color: #ffff00 !important;
    background: rgba(255, 255, 0, 0.2) !important;
}

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

/* Stock Empty State */
.stock-pile.empty {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: rgba(255, 255, 255, 0.6);
    cursor: pointer;
}

.stock-pile.empty:hover {
    color: rgba(255, 255, 255, 0.8);
    background: rgba(255, 255, 255, 0.1);
}

/* Auto-complete animation */
.auto-move {
    animation: autoMove 0.5s ease-in-out;
}

@keyframes autoMove {
    0% { transform: scale(1); }
    50% { transform: scale(1.1) rotate(5deg); }
    100% { transform: scale(1); }
}

/* Responsive Design */
@media (max-width: 768px) {
    .game-container {
        padding: 10px;
    }
    
    .game-header {
        flex-direction: column;
        text-align: center;
    }
    
    .header-left h1 {
        font-size: 2rem;
    }
    
    .game-stats {
        justify-content: center;
    }
    
    .game-board {
        grid-template-areas: 
            "foundation"
            "stock"
            "tableau";
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .foundation-area,
    .stock-area {
        justify-content: center;
    }
    
    .tableau-area {
        gap: 10px;
        overflow-x: auto;
        padding-bottom: 10px;
    }
    
    .card,
    .foundation-pile,
    .stock-pile,
    .waste-pile,
    .tableau-pile {
        width: 113px;
        height: 153px;
    }

    .card {
        width: 109px;
        height: 149px;
        font-size: 15px;
    }

    .card-center {
        font-size: 26px;
    }
    
    .message-content {
        padding: 20px;
        margin: 20px;
    }
    
    .message-content h2 {
        font-size: 1.5rem;
    }
    
    .message-stats {
        flex-direction: column;
        align-items: center;
    }
    
    .message-buttons,
    .settings-buttons {
        flex-direction: column;
    }
    
    .btn {
        padding: 12px 20px;
        font-size: 16px;
    }
}

@media (max-width: 480px) {
    .tableau-area {
        gap: 8px;
    }
    
    .card,
    .foundation-pile,
    .stock-pile,
    .waste-pile,
    .tableau-pile {
        width: 100px;
        height: 133px;
    }

    .card {
        width: 96px;
        height: 129px;
        font-size: 14px;
    }

    .card-center {
        font-size: 24px;
    }
}

.card.no-move-available {
    animation: noMoveShake 0.3s ease-in-out;
}

@keyframes noMoveShake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

@media screen and (max-width: 768px) and (orientation: portrait) {
    .landscape-prompt {
        display: flex;
    }

    .game-container {
        display: none;
    }
}

@media screen and (max-width: 768px) and (orientation: landscape) {
    .landscape-prompt {
        display: none;
    }

    .game-container {
        display: block;
        padding: 10px;
    }

    .game-header {
        flex-direction: column;
        gap: 10px;
        margin-bottom: 15px;
    }

    .game-header h1 {
        font-size: 1.5rem;
    }

    .game-stats {
        justify-content: center;
        gap: 15px;
    }

    .header-right {
        justify-content: center;
        flex-wrap: wrap;
        gap: 8px;
    }

    .btn {
        padding: 8px 12px;
        font-size: 0.8rem;
    }

    .game-board {
        gap: 8px;
    }

    .foundation-area,
    .stock-area {
        gap: 8px;
    }

    .tableau-area {
        gap: 8px;
    }
}