/* ===================================
   Antigravity Family Poker - Styles
   =================================== */

:root {
    /* Color Palette */
    --bg-primary: #0a1628;
    --bg-secondary: #132238;
    --bg-table: linear-gradient(135deg, #1a472a 0%, #0d2818 50%, #1a472a 100%);
    --bg-card: linear-gradient(145deg, #ffffff 0%, #f0f0f0 100%);

    /* Suit Colors */
    --color-spade: #1a1a2e;
    --color-heart: #e63946;
    --color-diamond: #1565d8; /* 四色牌面：方块蓝 */
    --color-club: #157f3d;    /* 四色牌面：梅花绿 */
    --color-joker-red: #ff2d55;
    --color-joker-black: #2d3436;

    /* UI Colors */
    --color-primary: #4a90d9;
    --color-success: #2ecc71;
    --color-warning: #f1c40f;
    --color-danger: #e74c3c;
    --color-gold: #ffd700;

    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #a0aec0;
    --text-dark: #1a1a2e;

    /* Card Dimensions */
    --card-width: 70px;
    --card-height: 100px;
    --card-radius: 8px;
    --card-overlap: 25px;

    /* Shadows */
    --shadow-card: 0 4px 15px rgba(0, 0, 0, 0.3);
    --shadow-hover: 0 8px 25px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 20px rgba(74, 144, 217, 0.5);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
}

#app {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ===================================
   Header Styles
   =================================== */
.game-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 20px;
    background: var(--bg-secondary);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    z-index: 100;
}

.header-left,
.header-center,
.header-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

.round-info {
    font-size: 14px;
    color: var(--text-secondary);
}

#round-number {
    color: var(--color-gold);
    font-weight: 700;
}

.trump-display {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
}

.trump-label {
    font-size: 13px;
    color: var(--text-secondary);
}

.trump-suit {
    font-size: 18px;
    font-weight: 700;
}

.trump-suit.spade { color: var(--color-spade); }
.trump-suit.heart { color: var(--color-heart); }
.trump-suit.diamond { color: var(--color-diamond); }
.trump-suit.club { color: var(--color-club); }

.score-display {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: linear-gradient(135deg, rgba(46, 204, 113, 0.2), rgba(46, 204, 113, 0.1));
    border: 1px solid rgba(46, 204, 113, 0.3);
    border-radius: 25px;
}

.score-label {
    font-size: 13px;
    color: var(--text-secondary);
}

.score-value {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-success);
}

/* Buttons */
.btn {
    padding: 8px 16px;
    border: none;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 6px;
}

.btn-history {
    background: rgba(74, 144, 217, 0.2);
    color: var(--color-primary);
    border: 1px solid rgba(74, 144, 217, 0.3);
}

.btn-history:hover {
    background: rgba(74, 144, 217, 0.3);
}

.btn-reset {
    background: rgba(231, 76, 60, 0.2);
    color: var(--color-danger);
    border: 1px solid rgba(231, 76, 60, 0.3);
}

.btn-reset:hover {
    background: rgba(231, 76, 60, 0.3);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), #3a7bc8);
    color: white;
    border: none;
    padding: 10px 24px;
    font-size: 14px;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* ===================================
   Game Table Styles
   =================================== */
.game-table {
    flex: 1;
    position: relative;
    background: var(--bg-table);
    min-height: 400px;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Table felt texture overlay */
.game-table::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100' height='100' filter='url(%23noise)' opacity='0.08'/%3E%3C/svg%3E");
    pointer-events: none;
}

/* Player Slots */
.opponents-row {
    display: contents; /* 桌面端：包裹层隐形，四家仍按四角绝对定位 */
}

.player-slot {
    position: absolute;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.player-top-left {
    top: 20px;
    left: 15%;
}

.player-top-right {
    top: 20px;
    right: 15%;
}

.player-left {
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
}

.player-right {
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
}

/* Player Panel */
.player-panel {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 12px 16px;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    min-width: 100px;
}

.player-panel.active {
    border-color: var(--color-gold);
    box-shadow: 0 0 15px rgba(255, 215, 0, 0.3);
}

.player-panel.human-panel {
    background: rgba(74, 144, 217, 0.2);
    border-color: rgba(74, 144, 217, 0.4);
}

.player-avatar {
    font-size: 32px;
    line-height: 1;
}

.player-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.player-name {
    font-size: 13px;
    font-weight: 600;
}

.player-role {
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 10px;
    font-weight: 500;
}

.player-role.dealer {
    background: var(--color-gold);
    color: var(--text-dark);
}

.player-role.defender {
    background: var(--color-primary);
    color: white;
}

.player-role.friend {
    background: var(--color-success);
    color: white;
}

.player-stats {
    display: flex;
    gap: 12px;
    font-size: 12px;
}

.card-count {
    color: var(--text-secondary);
}

.player-score {
    font-weight: 700;
}

.player-score.positive {
    color: var(--color-success);
}

.player-score.negative {
    color: var(--color-danger);
}

/* Player Cards Back (for opponents) */
.player-cards-back {
    display: flex;
    justify-content: center;
}

.card-back {
    width: 40px;
    height: 56px;
    background: linear-gradient(135deg, #2c3e50, #1a252f);
    border: 2px solid #34495e;
    border-radius: 4px;
    margin: 0 -15px;
    box-shadow: var(--shadow-card);
}

/* Table Center */
.table-center {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    z-index: 10;
}

.trick-area {
    display: flex;
    gap: 10px;
    min-height: 100px;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
}

.trick-card {
    position: relative;
}

.trick-card .player-label {
    position: absolute;
    bottom: -20px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 11px;
    color: var(--text-secondary);
    white-space: nowrap;
}

.bottom-cards-indicator {
    padding: 8px 16px;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 20px;
    font-size: 12px;
    color: var(--text-secondary);
}

.game-message {
    padding: 10px 20px;
    background: rgba(0, 0, 0, 0.6);
    border-radius: 25px;
    font-size: 14px;
    color: var(--color-gold);
    text-align: center;
    min-height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ===================================
   Human Player Hand Area
   =================================== */
.player-hand-area {
    background: var(--bg-secondary);
    padding: 15px 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.player-bottom {
    position: relative;
    margin-bottom: 10px;
}

.player-bottom .player-panel {
    position: absolute;
    left: 0;
    top: 0;
    flex-direction: row;
    padding: 8px 12px;
}

.player-bottom .player-avatar {
    font-size: 24px;
}

.player-bottom .player-info {
    flex-direction: row;
    gap: 8px;
}

.hand-container {
    display: flex;
    justify-content: center;
    align-items: flex-end;
    min-height: 120px;
    padding: 10px 0;
    overflow-x: auto;
    gap: 2px;
}

.action-buttons {
    display: flex;
    justify-content: center;
    gap: 10px;
    padding-top: 10px;
}

/* ===================================
   Card Styles
   =================================== */
.card {
    width: var(--card-width);
    height: var(--card-height);
    background: var(--bg-card);
    border-radius: var(--card-radius);
    box-shadow: var(--shadow-card);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 6px;
    user-select: none;
    flex-shrink: 0;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
    z-index: 10;
}

.card.selected {
    transform: translateY(-20px);
    box-shadow: var(--shadow-glow);
    border: 2px solid var(--color-primary);
}

.card.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.card.disabled:hover {
    transform: none;
}

.card.highlight-bid {
    animation: pulse-bid 1s infinite;
}

@keyframes pulse-bid {
    0%, 100% { box-shadow: var(--shadow-card); }
    50% { box-shadow: 0 0 20px var(--color-gold), var(--shadow-card); }
}

.card-corner {
    display: flex;
    flex-direction: column;
    align-items: center;
    line-height: 1;
}

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

.card-rank {
    font-size: 16px;
    font-weight: 700;
}

.card-suit-small {
    font-size: 14px;
}

.card-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 28px;
}

/* Card Colors —— 四色牌面：♠黑 ♥红 ♣绿 ♦蓝，小屏一眼区分（用户反馈黑桃梅花分不清） */
.card.spade .card-rank,
.card.spade .card-suit-small,
.card.spade .card-center {
    color: var(--color-spade);
}

.card.club .card-rank,
.card.club .card-suit-small,
.card.club .card-center {
    color: var(--color-club);
}

.card.heart .card-rank,
.card.heart .card-suit-small,
.card.heart .card-center {
    color: var(--color-heart);
}

.card.diamond .card-rank,
.card.diamond .card-suit-small,
.card.diamond .card-center {
    color: var(--color-diamond);
}

.card.joker-red .card-rank,
.card.joker-red .card-center {
    color: var(--color-joker-red);
}

.card.joker-black .card-rank,
.card.joker-black .card-center {
    color: var(--color-joker-black);
}

/* Joker special styling */
.card.joker-red,
.card.joker-black {
    background: linear-gradient(145deg, #fff9e6 0%, #fff 100%);
}

/* ===================================
   History Drawer
   =================================== */
.history-drawer {
    position: fixed;
    top: 0;
    right: 0;
    width: 320px;
    height: 100vh;
    background: var(--bg-secondary);
    z-index: 1000;
    /* 用 transform 隐藏：宽度任意（如手机 88vw）都能完全滑出屏幕 */
    transform: translateX(100%);
    transition: transform var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.history-drawer.open {
    transform: translateX(0);
}

.drawer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.drawer-header h3 {
    font-size: 16px;
    font-weight: 600;
}

.btn-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 20px;
    cursor: pointer;
    padding: 4px 8px;
}

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

.drawer-content {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
}

.no-history {
    text-align: center;
    color: var(--text-secondary);
    padding: 40px 20px;
}

.history-item {
    padding: 12px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    margin-bottom: 10px;
}

.history-item .round {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.history-item .result {
    font-weight: 600;
    margin-bottom: 4px;
}

.history-item .result.win {
    color: var(--color-success);
}

.history-item .result.lose {
    color: var(--color-danger);
}

.history-item .scores {
    font-size: 12px;
    color: var(--text-secondary);
}

.drawer-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.drawer-overlay.visible {
    opacity: 1;
    visibility: visible;
}

/* ===================================
   Modal
   =================================== */
.modal {
    position: fixed;
    inset: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    background: rgba(0, 0, 0, 0.7);
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.modal.open {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--bg-secondary);
    border-radius: 16px;
    padding: 24px;
    max-width: 400px;
    width: 90%;
    text-align: center;
    transform: scale(0.9);
    transition: transform var(--transition-normal);
}

.modal.open .modal-content {
    transform: scale(1);
}

.modal-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 16px;
}

.modal-body {
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.6;
}

.modal-actions {
    display: flex;
    justify-content: center;
    gap: 12px;
}

/* Friend Card Selection */
.friend-card-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    margin: 16px 0;
}

.friend-card-option {
    padding: 12px 8px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 20px;
}

.friend-card-option:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: var(--color-primary);
}

.friend-card-option.selected {
    background: rgba(74, 144, 217, 0.3);
    border-color: var(--color-primary);
}

/* ===================================
   Animations
   =================================== */
@keyframes deal-card {
    from {
        opacity: 0;
        transform: translateY(-50px) scale(0.5);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.card.dealing {
    animation: deal-card 0.3s ease forwards;
}

@keyframes play-card {
    from {
        transform: translateY(0);
    }
    to {
        transform: translateY(-100px);
        opacity: 0;
    }
}

/* ===================================
   Responsive Design
   =================================== */
/* ===================================
   手机竖屏重排 (<= 768px)：
   四名对手收成顶部一行，手牌换行铺开一屏看全
   =================================== */
@media (max-width: 768px) {
    :root {
        --card-width: 52px;
        --card-height: 74px;
    }

    .game-header {
        flex-wrap: wrap;
        gap: 10px;
        padding: 10px 15px;
    }

    .header-left,
    .header-center,
    .header-right {
        flex: none;
    }

    .game-table {
        flex-direction: column;
        justify-content: flex-start;
        padding: 8px 6px;
        gap: 8px;
    }

    /* 四名对手：顶部一行四格 */
    .opponents-row {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 6px;
        width: 100%;
    }

    /* 只把四名对手改为流式（底部自己的面板保持相对定位锚点） */
    .opponents-row .player-slot {
        position: static;
        transform: none;
        gap: 4px;
    }

    .opponents-row .player-panel {
        width: 100%;
        min-width: 0;
        padding: 6px 4px;
        gap: 2px;
    }

    /* 自己的资料面板：改为手牌区上方的紧凑横条 */
    .player-bottom {
        margin-bottom: 4px;
        display: flex;
        justify-content: flex-start;
    }

    .player-bottom .player-panel {
        position: static;
        flex-direction: row;
        gap: 8px;
        padding: 4px 12px;
        min-width: 0;
    }

    .player-avatar {
        font-size: 20px;
    }

    .player-name {
        font-size: 11px;
        max-width: 100%;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .player-cards-back {
        display: none; /* 手机上省空间，只看张数 */
    }

    /* 中央出牌区吃掉剩余高度并垂直居中 */
    .table-center {
        flex: 1;
        width: 100%;
        justify-content: center;
    }

    /* 手牌：允许换行，每张露出 26px，整手牌一屏看全 */
    .hand-container {
        flex-wrap: wrap;
        row-gap: 10px;
        min-height: 0;
        padding: 18px 8px 8px 34px; /* 左内边距补偿负 margin 的首列外凸 */
    }

    .hand-container .card {
        margin-left: -26px;
    }

    .btn {
        padding: 6px 12px;
        font-size: 12px;
    }

    .score-display {
        padding: 6px 12px;
    }

    .score-value {
        font-size: 16px;
    }
}

@media (max-width: 480px) {
    :root {
        --card-width: 46px;
        --card-height: 66px;
    }

    .hand-container .card {
        margin-left: -24px;
    }

    .card-rank {
        font-size: 12px;
    }

    .card-suit-small {
        font-size: 10px;
    }

    .card-center {
        font-size: 20px;
    }

    .trump-display {
        padding: 4px 8px;
    }

    .trump-suit {
        font-size: 14px;
    }
}

/* ===================================
   Combo Play & New UI Additions
   =================================== */

/* 小尺寸卡牌（桌面出牌区 / 弹窗选牌） */
.card.small {
    width: 46px;
    height: 66px;
    padding: 4px;
    border-radius: 6px;
}

.card.small .card-rank {
    font-size: 12px;
}

.card.small .card-suit-small {
    font-size: 10px;
}

.card.small .card-center {
    font-size: 18px;
}

.card.small:hover {
    transform: none;
}

/* 一名玩家打出的一组牌 */
.trick-play {
    position: relative;
    margin-bottom: 22px;
}

.trick-play .trick-cards {
    display: flex;
}

.trick-play .trick-cards .card {
    margin-left: -18px;
}

.trick-play .trick-cards .card:first-child {
    margin-left: 0;
}

.trick-play .player-label {
    position: absolute;
    bottom: -20px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 11px;
    color: var(--text-secondary);
    white-space: nowrap;
}

/* 叫朋友弹窗：庄家手牌身份网格 */
.friend-hand-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    max-height: 300px;
    overflow-y: auto;
    padding: 6px;
    justify-content: center;
}

.friend-card-cell {
    position: relative;
    border: 2px solid transparent;
    border-radius: 8px;
    padding: 2px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.friend-card-cell:hover {
    border-color: rgba(74, 144, 217, 0.5);
}

.friend-card-cell.selected {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
}

.friend-card-cell .friend-warn {
    position: absolute;
    top: -6px;
    right: -6px;
    font-size: 14px;
}

/* 危险操作按钮（独打/甩牌确认） */
.btn-danger {
    background: linear-gradient(145deg, #e74c3c, #c0392b);
    color: white;
}

.btn-danger:hover {
    background: linear-gradient(145deg, #ec7063, #e74c3c);
    transform: translateY(-2px);
}

/* 王牌居中文字 */
.card-center.joker-text {
    font-size: 20px;
    writing-mode: vertical-lr;
}

/* 头部朋友牌显示 */
.friend-display {
    font-size: 13px;
    color: var(--color-gold);
    padding: 4px 10px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 12px;
}

.friend-display:empty {
    display: none;
}

/* 亮主的2：金光闪烁 */
.card.bid-flash {
    animation: bid-flash-glow 1.2s ease-in-out infinite;
    border: 2px solid var(--color-gold);
}

@keyframes bid-flash-glow {
    0%, 100% {
        box-shadow: 0 0 8px rgba(255, 215, 0, 0.4);
        transform: translateY(0);
    }
    50% {
        box-shadow: 0 0 24px rgba(255, 215, 0, 0.9);
        transform: translateY(-4px);
    }
}

/* 音效开关按钮 */
.btn-sound {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    padding: 8px 12px;
}

/* ===================================
   Login / Profile Screen
   =================================== */
.login-screen {
    position: fixed;
    inset: 0;
    background: linear-gradient(160deg, #0a1628 0%, #12263f 60%, #0d2818 100%);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    overflow-y: auto;
    overscroll-behavior: contain;
}

.login-screen.hidden {
    display: none;
}

.login-panel {
    width: 100%;
    max-width: 400px;
    background: var(--bg-secondary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 28px 26px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.login-title {
    text-align: center;
    font-size: 26px;
    margin-bottom: 4px;
}

.login-sub {
    text-align: center;
    color: var(--text-secondary);
    font-size: 13px;
    margin-bottom: 20px;
}

.login-label {
    display: block;
    color: var(--text-secondary);
    font-size: 13px;
    margin: 14px 0 6px;
}

.login-input {
    width: 100%;
    padding: 10px 14px;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    background: rgba(0, 0, 0, 0.3);
    color: var(--text-primary);
    font-size: 15px;
    font-family: inherit;
    outline: none;
    transition: border-color var(--transition-fast);
}

.login-input:focus {
    border-color: var(--color-primary);
}

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

.avatar-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 8px;
}

.avatar-option {
    font-size: 26px;
    text-align: center;
    padding: 8px 0;
    border-radius: 10px;
    background: rgba(0, 0, 0, 0.25);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    user-select: none;
}

.avatar-option:hover {
    background: rgba(74, 144, 217, 0.15);
}

.avatar-option.selected {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
}

.ai-level-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

.ai-level-option {
    text-align: center;
    padding: 10px 4px;
    border-radius: 10px;
    background: rgba(0, 0, 0, 0.25);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    user-select: none;
}

.ai-level-option:hover {
    background: rgba(74, 144, 217, 0.15);
}

.ai-level-option.selected {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
}

.ai-level-name {
    display: block;
    font-size: 15px;
    font-weight: 700;
}

.ai-level-desc {
    display: block;
    font-size: 11px;
    color: var(--text-secondary);
    margin-top: 2px;
}

.btn-login {
    width: 100%;
    margin-top: 22px;
    padding: 12px;
    font-size: 16px;
}

.btn-profile {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    padding: 8px 12px;
}

/* ===================================
   手牌扇形叠放（避免横向滚动过长）
   =================================== */
.hand-container {
    gap: 0;
}

.hand-container .card:hover {
    z-index: 20;
}

.hand-container .card.selected {
    z-index: 15;
}

/* 桌面端单行扇形；手机端(≤768px)由上方媒体查询换行铺开 */
@media (min-width: 769px) {
    .hand-container {
        padding: 24px 10px 10px;
    }

    .hand-container .card:not(:first-child) {
        margin-left: -30px;
    }
}

/* ===================================
   出牌入场动画
   =================================== */
.trick-play.just-played .card {
    animation: card-in 0.28s ease-out;
}

@keyframes card-in {
    from {
        transform: translateY(30px) scale(0.8);
        opacity: 0;
    }
    to {
        transform: translateY(0) scale(1);
        opacity: 1;
    }
}

@media (prefers-reduced-motion: reduce) {
    .trick-play.just-played .card,
    .card.bid-flash,
    .card.highlight-bid {
        animation: none;
    }
}

/* ===================================
   触控优化
   =================================== */
body {
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
}

.btn {
    min-height: 38px;
}

/* ===================================
   响应式：平板 (<= 900px)
   =================================== */
@media (min-width: 769px) and (max-width: 900px) {
    :root {
        --card-width: 58px;
        --card-height: 84px;
    }

    .player-top-left { left: 8%; }
    .player-top-right { right: 8%; }

    .player-panel {
        padding: 6px 8px;
    }

    .hand-container .card:not(:first-child) {
        margin-left: -32px;
    }
}

/* ===================================
   响应式：手机 (<= 640px)
   =================================== */
@media (max-width: 640px) {
    :root {
        --card-width: 50px;
        --card-height: 72px;
        --card-radius: 6px;
    }

    .game-header {
        padding: 6px 8px;
        flex-wrap: wrap;
        gap: 4px;
    }

    .header-left, .header-center, .header-right {
        gap: 6px;
    }

    /* 顶部信息压缩，保证 第N局+主+友+得分 一行放得下 */
    .round-info { font-size: 12px; }
    .trump-display { padding: 3px 6px; }
    .trump-suit { font-size: 13px; }
    .friend-display { font-size: 11px; padding: 3px 7px; }
    .room-display { font-size: 10px; padding: 3px 7px; }

    .score-display {
        font-size: 11px;
        padding: 4px 8px;
    }

    .score-value {
        font-size: 14px;
    }

    .btn {
        padding: 8px 10px;
        font-size: 12px;
    }

    .player-avatar { font-size: 18px; }
    .player-name { font-size: 11px; }
    .player-role { font-size: 10px; }
    .card-count, .player-score { font-size: 10px; }

    .card.small {
        width: 36px;
        height: 52px;
        padding: 3px;
    }

    .card.small .card-center { font-size: 14px; }
    .card.small .card-rank { font-size: 10px; }

    .trick-play .trick-cards .card {
        margin-left: -14px;
    }

    .card:hover {
        transform: none; /* 触屏没有 hover，防止粘滞抬起 */
    }

    .card.selected {
        transform: translateY(-14px);
    }

    .game-message {
        font-size: 12px;
        padding: 8px 12px;
        min-height: 34px;
    }

    .modal-content {
        width: 94vw;
        max-width: 94vw;
        max-height: 86vh;
        overflow-y: auto;
        padding: 16px;
    }

    .history-drawer {
        width: 88vw;
    }

    .avatar-grid {
        grid-template-columns: repeat(5, 1fr);
    }

    .login-screen {
        display: block;
        padding: max(12px, env(safe-area-inset-top)) 12px max(12px, env(safe-area-inset-bottom));
    }

    .login-panel {
        margin: 0 auto;
        padding: 20px 16px;
    }

    .action-buttons .btn {
        min-height: 44px; /* 触控目标 */
        font-size: 14px;
    }
}

/* 横屏小高度手机 */
@media (max-height: 480px) {
    :root {
        --card-width: 44px;
        --card-height: 62px;
    }

    .hand-container {
        min-height: 76px;
        padding-top: 18px;
    }

    .game-header {
        padding: 4px 10px;
    }
}

/* ===================================
   联机模式 UI
   =================================== */
.mode-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
}

.mode-option {
    text-align: center;
    padding: 10px 4px;
    border-radius: 10px;
    background: rgba(0, 0, 0, 0.25);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    user-select: none;
}

.mode-option:hover {
    background: rgba(74, 144, 217, 0.15);
}

.mode-option.selected {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
}

.room-status {
    text-align: center;
    color: var(--text-secondary);
    font-size: 13px;
    margin-bottom: 12px;
    min-height: 18px;
}

.room-btn {
    width: 100%;
    margin-bottom: 10px;
    padding: 11px;
}

.room-join-row {
    display: flex;
    gap: 8px;
}

.room-code-input {
    flex: 1;
    text-transform: uppercase;
    letter-spacing: 4px;
    text-align: center;
    font-weight: 700;
}

.room-display {
    font-size: 12px;
    color: var(--text-secondary);
    padding: 4px 10px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 12px;
}

.room-display:empty {
    display: none;
}

/* ===================================
   邀请制登录 / 房主管理
   =================================== */
.auth-input {
    margin-bottom: 8px;
}

.auth-switch {
    text-align: center;
    color: var(--color-primary);
    font-size: 13px;
    cursor: pointer;
    padding: 8px 0 2px;
    user-select: none;
}

.auth-switch:hover {
    text-decoration: underline;
}

.admin-link {
    text-align: center;
    color: var(--text-secondary);
    font-size: 12px;
    cursor: pointer;
    margin-top: 16px;
    user-select: none;
    opacity: 0.7;
}

.admin-link:hover {
    opacity: 1;
}

.admin-panel {
    margin-top: 10px;
    padding: 12px;
    background: rgba(0, 0, 0, 0.25);
    border-radius: 10px;
    font-size: 13px;
}

.admin-actions {
    display: flex;
    gap: 8px;
    margin-bottom: 10px;
}

.admin-actions .btn {
    flex: 1;
    font-size: 12px;
}

.admin-list .invite-code {
    display: inline-block;
    background: rgba(255, 215, 0, 0.15);
    border: 1px solid rgba(255, 215, 0, 0.4);
    color: var(--color-gold);
    padding: 3px 8px;
    border-radius: 6px;
    margin: 2px;
    font-size: 14px;
    letter-spacing: 1px;
    user-select: all; /* 点击即全选便于复制 */
}

.admin-dim {
    color: var(--text-secondary);
    font-size: 11px;
    margin-top: 6px;
}

/* ===================================
   出牌倒计时
   =================================== */
.turn-timer {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.65);
    border: 3px solid var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    font-weight: 700;
    color: #fff;
    box-shadow: 0 0 12px rgba(74, 144, 217, 0.4);
}

.turn-timer.urgent {
    border-color: var(--color-danger);
    color: var(--color-danger);
    animation: timer-pulse 0.6s infinite;
}

@keyframes timer-pulse {
    50% {
        transform: scale(1.15);
        box-shadow: 0 0 18px rgba(231, 76, 60, 0.8);
    }
}

@media (max-height: 800px) {
    .login-screen {
        display: block;
        padding-top: max(12px, env(safe-area-inset-top));
        padding-bottom: max(12px, env(safe-area-inset-bottom));
    }

    .login-panel {
        margin: 0 auto;
    }
}

/* 竖屏手机：牌桌、两行手牌与操作区保持在动态视口内。 */
@media (max-width: 640px) and (orientation: portrait) {
    #app {
        height: 100vh;
        height: 100dvh;
        min-height: 0;
        overflow: hidden;
    }

    .game-header {
        flex: 0 0 auto;
        padding-top: max(6px, env(safe-area-inset-top));
    }

    .game-table {
        flex: 1 1 auto;
        min-height: 0;
        overflow: hidden;
        padding: 4px;
        gap: 4px;
    }

    .opponents-row {
        gap: 3px;
    }

    .opponents-row .player-panel {
        padding: 3px 2px;
    }

    .table-center {
        min-height: 0;
        gap: 4px;
    }

    .trick-area {
        min-height: 52px;
    }

    .game-message {
        min-height: 28px;
        padding: 4px 8px;
    }

    .player-hand-area {
        flex: 0 0 auto;
        padding: 3px 6px max(4px, env(safe-area-inset-bottom));
    }

    .player-bottom {
        margin-bottom: 2px;
    }

    .player-bottom .player-panel {
        padding: 2px 8px;
    }

    .hand-container {
        row-gap: 5px;
        padding-top: 6px;
        padding-bottom: 4px;
    }

    .action-buttons {
        padding-top: 3px;
    }
}

@media (max-width: 480px) and (orientation: portrait) {
    :root {
        --card-width: 46px;
        --card-height: 66px;
    }

    .hand-container .card {
        margin-left: -24px;
    }
}

@media (max-width: 360px) and (max-height: 700px) and (orientation: portrait) {
    :root {
        --card-width: 42px;
        --card-height: 60px;
    }

    .hand-container {
        padding-left: 30px;
    }

    .hand-container .card {
        margin-left: -22px;
    }

    .action-buttons .btn {
        min-height: 40px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .turn-timer.urgent {
        animation: none;
    }
}

/* ===================================
   反主高亮警示
   =================================== */
.card.counter-glow {
    border: 2px solid var(--color-danger);
    animation: counter-flash-glow 0.7s ease-in-out infinite;
}

@keyframes counter-flash-glow {
    0%, 100% {
        box-shadow: 0 0 10px rgba(231, 76, 60, 0.5);
        transform: translateY(0) scale(1);
    }
    50% {
        box-shadow: 0 0 28px rgba(231, 76, 60, 1);
        transform: translateY(-6px) scale(1.06);
    }
}

.player-label.counter-label {
    color: var(--color-danger);
    font-weight: 700;
    font-size: 14px;
    text-shadow: 0 0 8px rgba(231, 76, 60, 0.8);
    animation: counter-label-blink 0.7s ease-in-out infinite;
}

@keyframes counter-label-blink {
    50% { opacity: 0.55; }
}

@media (prefers-reduced-motion: reduce) {
    .card.counter-glow,
    .player-label.counter-label {
        animation: none;
    }
}

/* ===================================
   底牌查看 / 上一轮回看
   =================================== */
.table-pills {
    display: flex;
    gap: 8px;
    align-items: center;
}

.bottom-cards-indicator.peekable {
    cursor: pointer;
    border: 1px solid rgba(255, 215, 0, 0.5);
    color: var(--color-gold);
}

.bottom-cards-indicator.peekable:hover {
    background: rgba(255, 215, 0, 0.15);
}

.last-trick-btn {
    cursor: pointer;
    border: 1px solid rgba(74, 144, 217, 0.5);
    color: var(--color-primary);
}

.last-trick-btn:hover {
    background: rgba(74, 144, 217, 0.15);
}

.peek-cards {
    display: flex;
    flex-wrap: wrap;
    gap: 0;
}

.peek-cards .card {
    margin-left: -14px;
}

.peek-cards .card:first-child {
    margin-left: 0;
}

.last-trick-line {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 5px 6px;
    border-radius: 8px;
    margin-bottom: 4px;
}

.last-trick-line.winner {
    background: rgba(255, 215, 0, 0.12);
    border: 1px solid rgba(255, 215, 0, 0.35);
}

.last-trick-name {
    min-width: 72px;
    font-size: 13px;
    flex-shrink: 0;
}

/* ===================================
   发牌飞入动效 + 手机牌面清晰度
   =================================== */
.hand-container .card.deal-in {
    animation: deal-in 0.35s cubic-bezier(0.2, 0.8, 0.3, 1);
}

@keyframes deal-in {
    from {
        transform: translateY(-46px) scale(0.6) rotate(-8deg);
        opacity: 0;
    }
    60% {
        opacity: 1;
    }
    to {
        transform: translateY(0) scale(1) rotate(0);
        opacity: 1;
    }
}

@media (prefers-reduced-motion: reduce) {
    .hand-container .card.deal-in {
        animation: none;
    }
}

/* 手机端角标加大加粗，黑桃/梅花/数字一眼可辨 */
@media (max-width: 640px) {
    .card .card-rank {
        font-size: 15px;
        font-weight: 700;
    }

    .card .card-suit-small {
        font-size: 13px;
    }

    .card.small .card-rank {
        font-size: 11px;
    }

    .card.small .card-suit-small {
        font-size: 10px;
    }
}

@media (max-width: 480px) {
    .card .card-rank {
        font-size: 14px;
        font-weight: 700;
    }

    .card .card-suit-small {
        font-size: 12px;
    }
}

/* ===================================
   生涯战绩（战绩抽屉顶部）
   =================================== */
.career-summary {
    background: rgba(74, 144, 217, 0.1);
    border: 1px solid rgba(74, 144, 217, 0.3);
    border-radius: 10px;
    padding: 12px;
    margin-bottom: 12px;
}

.career-title {
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 6px;
}

.career-stats {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.career-stats strong {
    color: var(--text-primary);
}

.career-recent {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 6px;
    max-height: 150px;
    overflow-y: auto;
}

.career-line {
    font-size: 12px;
    color: var(--text-secondary);
    padding: 2px 0;
}

/* ===================================
   账号头像 / 个人信息
   =================================== */
.avatar-img {
    width: 1.2em;
    height: 1.2em;
    border-radius: 50%;
    object-fit: cover;
    vertical-align: middle;
    display: inline-block;
}

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

.profile-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    margin-bottom: 12px;
    background: rgba(0, 0, 0, 0.25);
    border-radius: 10px;
}

.profile-avatar {
    font-size: 26px;
    line-height: 1;
}

.profile-avatar .avatar-img {
    width: 32px;
    height: 32px;
}

.profile-avatar.big {
    font-size: 44px;
}

.profile-avatar.big .avatar-img {
    width: 56px;
    height: 56px;
}

.profile-name {
    font-weight: 700;
    flex: 1;
}

.profile-edit-link {
    padding: 4px 0;
}

.profile-modal-row {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 8px;
}

.profile-modal-actions {
    display: flex;
    gap: 8px;
    margin-bottom: 4px;
}