* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Microsoft JhengHei', '微軟正黑體', sans-serif;
}

:root {
    --primary-color: #8B4513;  /* 深棕色，像麻將桌的顏色 */
    --secondary-color: #C41E3A;  /* 紅色，像麻將牌的紅色 */
    --accent-color: #228B22;  /* 森林綠，像麻將牌的綠色 */
    --background-color: #F5DEB3;  /* 米色，像麻將牌的背景色 */
    --text-color: #4A3728;  /* 深棕色文字 */
    --card-background: #FFF8DC;  /* 米白色，像麻將牌的顏色 */
    --shadow: 0 4px 6px rgba(139, 69, 19, 0.2);
    --border-radius: 12px;
}

body {
    font-family: 'Microsoft JhengHei', '微軟正黑體', sans-serif;
    background-color: var(--background-color);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--text-color);
    padding: 20px;
    position: relative;
    overflow-x: hidden;
}

/* 麻將背景裝飾 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(139, 69, 19, 0.1) 0%, transparent 20%),
        radial-gradient(circle at 60% 40%, rgba(30, 144, 255, 0.12) 0%, transparent 20%),
        radial-gradient(circle at 20% 80%, rgba(34, 139, 34, 0.1) 0%, transparent 20%),
        radial-gradient(circle at 80% 70%, rgba(139, 69, 19, 0.1) 0%, transparent 20%);
    pointer-events: none;
    z-index: -1;
}

/* 麻將牌圖案 */
.mahjong-pattern {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    pointer-events: none;
    z-index: -1;
    opacity: 0.15;
    background-image: 
        url("https://upload.wikimedia.org/wikipedia/commons/thumb/8/8c/0401%E6%9D%B1%E9%A2%A8.svg/140px-0401%E6%9D%B1%E9%A2%A8.svg.png"),
        url("https://upload.wikimedia.org/wikipedia/commons/thumb/4/4c/0403%E5%8D%97%E9%A2%A8.svg/140px-0403%E5%8D%97%E9%A2%A8.svg.png"),
        url("https://upload.wikimedia.org/wikipedia/commons/thumb/2/2c/0402%E8%A5%BF%E9%A2%A8.svg/140px-0402%E8%A5%BF%E9%A2%A8.svg.png"),
        url("https://upload.wikimedia.org/wikipedia/commons/thumb/4/4c/0404%E5%8C%97%E9%A2%A8.svg/140px-0404%E5%8C%97%E9%A2%A8.svg.png"),
        url("https://upload.wikimedia.org/wikipedia/commons/thumb/5/5c/0405%E4%B8%AD.svg/140px-0405%E4%B8%AD.svg.png"),
        url("https://upload.wikimedia.org/wikipedia/commons/thumb/6/6c/0406%E7%99%BC.svg/140px-0406%E7%99%BC.svg.png"),
        url("https://upload.wikimedia.org/wikipedia/commons/thumb/7/7c/0407%E7%99%BD.svg/140px-0407%E7%99%BD.svg.png");
    background-size: 220px 320px;
    background-repeat: repeat;
    background-position: 
        0 0,
        220px 0,
        0 320px,
        220px 320px,
        0 640px,
        220px 640px,
        0 960px;
    transform: rotate(-15deg);
}

.screen {
    background-color: var(--card-background);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    width: 90%;
    max-width: 800px;
    transition: all 0.3s ease;
    border: 2px solid var(--primary-color);
    position: relative;
    z-index: 1;
    backdrop-filter: blur(5px);
}

.hidden {
    display: none !important;
}

#startScreen {
    text-align: center;
    background: linear-gradient(135deg, var(--primary-color), #A0522D);
    color: var(--card-background);
    animation: screenFadeIn 1s ease-out;
    position: relative;
    overflow: hidden;
}

#startScreen::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M5 5h30v30h-30z' fill='%23FFF8DC' fill-opacity='0.1'/%3E%3C/svg%3E");
    background-size: 40px 40px;
    opacity: 0.1;
    z-index: 0;
}

#startScreen h1 {
    position: relative;
    z-index: 1;
    margin-bottom: 2rem;
    font-size: 3.5rem;
    font-weight: 900;
    text-shadow: 3px 3px 6px rgba(0, 0, 0, 0.3);
    letter-spacing: 2px;
    font-family: 'Microsoft JhengHei', '微軟正黑體', sans-serif;
    animation: titleFadeIn 1.5s ease-out;
}

#startButton {
    animation: buttonFadeIn 2s ease-out;
    position: relative;
    overflow: hidden;
}

#startButton::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.2),
        transparent
    );
    animation: buttonShine 2s ease-out;
}

@keyframes screenFadeIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes titleFadeIn {
    0% {
        opacity: 0;
        transform: translateY(-30px);
    }
    50% {
        opacity: 0;
        transform: translateY(-30px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes buttonFadeIn {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }
    60% {
        opacity: 0;
        transform: translateY(20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes buttonShine {
    0% {
        left: -100%;
    }
    20% {
        left: 100%;
    }
    100% {
        left: 100%;
    }
}

button {
    padding: 1.2rem 2.5rem;
    font-size: 1.3rem;
    border: none;
    border-radius: var(--border-radius);
    background-color: #2980b9;
    color: white;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 700;
    box-shadow: var(--shadow);
    letter-spacing: 1px;
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 8px rgba(0, 0, 0, 0.15);
    background-color: #228B22;
}

.settings {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
    background-color: #f8f9fa;
    padding: 1.5rem;
    border-radius: var(--border-radius);
}

.input-group {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.input-group label {
    font-weight: 700;
    color: var(--primary-color);
    font-size: 1.2rem;
}

.input-group input {
    padding: 0.8rem;
    border: 2px solid var(--primary-color);
    border-radius: var(--border-radius);
    width: 120px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background-color: var(--card-background);
}

.input-group input:focus {
    border-color: var(--secondary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(196, 30, 58, 0.2);
}

.players {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.player {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    background-color: var(--card-background);
    border-radius: var(--border-radius);
    transition: all 0.3s ease;
    border: 2px solid var(--primary-color);
}

.player:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
    border-color: var(--secondary-color);
}

.player-name {
    padding: 0.8rem;
    border: 2px solid var(--primary-color);
    border-radius: var(--border-radius);
    width: 160px;
    font-size: 1.1rem;
    font-weight: 500;
    transition: all 0.3s ease;
    background-color: var(--card-background);
    flex-shrink: 0;
}

.player-name:focus {
    border-color: var(--secondary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(196, 30, 58, 0.2);
}

.score-container {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    min-width: 130px;
    justify-content: flex-end;
    flex-shrink: 0;
}

.score {
    font-size: 2rem;
    font-weight: 900;
    color: var(--secondary-color);
    min-width: 70px;
    text-align: right;
    font-family: 'Microsoft JhengHei', '微軟正黑體', sans-serif;
    flex-shrink: 0;
}

.edit-score-btn {
    padding: 0.3rem;
    font-size: 0.8rem;
    background-color: var(--accent-color);
    color: white;
    border: none;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow);
    flex-shrink: 0;
}

.edit-score-btn:hover {
    background-color: #1e7e34;
    transform: scale(1.1);
}

.buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    margin-top: 2rem;
}

.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    backdrop-filter: blur(5px);
    z-index: 1000;
}

.modal-content {
    background-color: var(--card-background);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    width: 90%;
    max-width: 500px;
    box-shadow: var(--shadow);
    animation: modalFadeIn 0.3s ease;
    border: 2px solid var(--primary-color);
    position: relative;
    z-index: 1001;
}

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

.modal-content h2 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-size: 2.2rem;
    font-weight: 900;
    font-family: 'Microsoft JhengHei', '微軟正黑體', sans-serif;
    letter-spacing: 1px;
}

.modal-content h3 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.modal-body {
    margin-top: 1.5rem;
}

.player-buttons {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin: 1rem 0;
}

.player-buttons button {
    background-color: var(--card-background);
    color: var(--text-color);
    padding: 1rem;
    font-size: 1.1rem;
    font-weight: 500;
    border: 2px solid var(--primary-color);
}

.player-buttons button.selected {
    background-color: var(--secondary-color);
    color: var(--card-background);
    border-color: var(--secondary-color);
}

.tai-input {
    margin: 1.5rem 0;
}

.tai-input label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
    font-weight: 700;
    font-size: 1.2rem;
}

.tai-input input {
    padding: 0.8rem;
    border: 2px solid var(--primary-color);
    border-radius: var(--border-radius);
    width: 120px;
    font-size: 1.1rem;
    font-weight: 500;
    transition: all 0.3s ease;
    background-color: var(--card-background);
}

.tai-input input:focus {
    border-color: var(--secondary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(196, 30, 58, 0.2);
}

.score-input {
    margin: 1.5rem 0;
}

.score-input label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
    font-weight: 700;
    font-size: 1.2rem;
}

.score-input input {
    padding: 0.8rem;
    border: 2px solid var(--primary-color);
    border-radius: var(--border-radius);
    width: 120px;
    font-size: 1.1rem;
    font-weight: 500;
    transition: all 0.3s ease;
    background-color: var(--card-background);
}

.score-input input:focus {
    border-color: var(--secondary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(196, 30, 58, 0.2);
}

.player-info h3 {
    color: var(--secondary-color);
    font-size: 1.5rem;
    margin-bottom: 1rem;
    text-align: center;
}

.banker-selection {
    margin: 1.5rem 0;
}

.banker-selection h3 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.lianzhuang-input {
    margin: 1.5rem 0;
}

.lianzhuang-input label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
    font-weight: 700;
    font-size: 1.2rem;
}

.lianzhuang-input input {
    padding: 0.8rem;
    border: 2px solid var(--primary-color);
    border-radius: var(--border-radius);
    width: 120px;
    font-size: 1.1rem;
    font-weight: 500;
    transition: all 0.3s ease;
    background-color: var(--card-background);
}

.lianzhuang-input input:focus {
    border-color: var(--secondary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(196, 30, 58, 0.2);
}

.zimo-comment {
    background-color: #f8f9fa;
    padding: 1rem;
    border-radius: var(--border-radius);
    margin: 1.5rem 0;
    border-left: 4px solid var(--accent-color);
}

.zimo-comment p {
    margin: 0.5rem 0;
    color: var(--text-color);
    font-size: 1rem;
    line-height: 1.4;
}

.button-group {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
}

#confirmHu, #confirmZimo, #confirmEditScore {
    margin-right: 1rem;
    background-color: var(--secondary-color);
}

#cancelHu, #cancelZimo, #cancelEditScore {
    background-color: var(--accent-color);
}

#cancelHu:hover, #cancelZimo:hover {
    background-color: #c0392b;
}

#undoButton {
    background-color: #6c757d;
}

#undoButton:hover {
    background-color: #5a6268;
}

#exportButton {
    background-color: var(--primary-color);
}

#exportButton:hover {
    background-color: #6B3410;
}

/* 移动端响应式设计 */
@media screen and (max-width: 768px) {
    body {
        padding: 10px;
    }

    .screen {
        padding: 1rem;
        width: 100%;
        margin: 0;
    }

    .settings {
        flex-direction: row;
        gap: 0.5rem;
        padding: 0.5rem;
        margin-bottom: 0.5rem;
    }

    .input-group {
        flex: 1;
        margin: 0;
        display: flex;
        align-items: center;
        gap: 0.3rem;
    }

    .input-group label {
        font-size: 1rem;
        white-space: nowrap;
    }

    .input-group input {
        padding: 0.3rem;
        font-size: 0.9rem;
        width: 60px;
    }

    .players {
        grid-template-columns: 1fr;
        gap: 0.5rem;
        margin-bottom: 0.5rem;
    }

    .player {
        padding: 0.5rem;
        gap: 0.2rem;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .player-name {
        padding: 0.5rem;
        font-size: 0.9rem;
        flex: 0.5;
        width: 45%;
        margin-right: 0.2rem;
    }

    .score-container {
        min-width: 65px;
        gap: 0.2rem;
    }

    .score {
        font-size: 1.5rem;
        min-width: 35px;
        text-align: right;
    }

    .edit-score-btn {
        width: 24px;
        height: 24px;
        font-size: 0.6rem;
        padding: 0.15rem;
    }

    #startScreen h1 {
        font-size: 2rem;
        margin-bottom: 1rem;
    }

    button {
        padding: 0.8rem 1.5rem;
        font-size: 1rem;
    }

    .buttons {
        gap: 0.5rem;
        margin-top: 0.5rem;
    }

    .modal-content {
        padding: 1rem;
        width: 95%;
    }

    .modal-content h2 {
        font-size: 1.5rem;
        margin-bottom: 1rem;
    }

    .modal-content h3 {
        font-size: 1.2rem;
        margin-bottom: 0.5rem;
    }

    .zimo-comment {
        padding: 0.8rem;
        margin: 1rem 0;
    }

    .zimo-comment p {
        font-size: 0.9rem;
        margin: 0.3rem 0;
    }

    .player-buttons {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.5rem;
    }

    .player-buttons button {
        padding: 0.5rem;
        font-size: 0.9rem;
    }

    .lianzhuang-input {
        margin: 0.5rem 0;
    }

    .lianzhuang-input label {
        font-size: 1rem;
        margin-bottom: 0.3rem;
    }

    .lianzhuang-input input {
        padding: 0.5rem;
        font-size: 0.9rem;
    }

    .tai-input {
        margin: 0.5rem 0;
    }

    .tai-input label {
        font-size: 1rem;
        margin-bottom: 0.3rem;
    }

    .tai-input input {
        padding: 0.5rem;
        font-size: 0.9rem;
    }

    #confirmHu, #confirmZimo, #cancelHu, #cancelZimo {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }
}

.modal-content button:disabled {
    background-color: #cccccc;
    cursor: not-allowed;
    opacity: 0.5;
    pointer-events: none;
}

.undo-message {
    position: fixed;
    top: 20px;
    right: 20px;
    background-color: var(--accent-color);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    z-index: 2000;
    animation: slideInRight 0.3s ease;
    font-weight: 500;
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}