/* ==========================================================================
   麻将算法 & AI 网页对战平台 - 全局与牌桌样式 (仿腾讯麻将沉浸风格)
   ========================================================================== */

:root {
    --bg-dark: #0f172a;
    --table-green-center: #1b6838;
    --table-green-edge: #0d4221;
    --table-border: #3b2210;
    --gold: #facc15;
    --gold-glow: rgba(250, 204, 21, 0.45);
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --success: #16a34a;
    --danger: #dc2626;
    --warning: #f59e0b;
    --card-bone: #fbfbf9;
    --card-side: #e2dfd5;
    --card-shadow: rgba(0, 0, 0, 0.4);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    user-select: none;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

/* 顶部导航 */
.app-header {
    height: 46px;
    background: #111827;
    border-bottom: 1px solid #1f2937;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    z-index: 50;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-icon {
    font-size: 22px;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.5));
}

.logo-text h1 {
    font-size: 15px;
    font-weight: 700;
    color: #f1f5f9;
    letter-spacing: 0.5px;
}

.logo-text .sub-text {
    font-size: 10px;
    color: #64748b;
}

.tab-nav {
    display: flex;
    background: #1f2937;
    padding: 3px;
    border-radius: 6px;
    gap: 3px;
}

.tab-btn {
    border: none;
    background: transparent;
    color: #94a3b8;
    padding: 4px 12px;
    font-size: 12px;
    font-weight: 600;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.tab-btn.active {
    background: #374151;
    color: #ffffff;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.tool-btn {
    background: #1f2937;
    color: #cbd5e1;
    border: 1px solid #374151;
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 11px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    text-decoration: none;
    transition: background 0.2s;
}

.tool-btn:hover {
    background: #374151;
    color: #ffffff;
}

/* 主内容区 */
.main-container {
    flex: 1;
    display: flex;
    position: relative;
    height: calc(100vh - 46px);
    overflow: hidden;
}

.view-section {
    display: none;
    width: 100%;
    height: 100%;
}

.view-section.active {
    display: flex;
    flex-direction: column;
}

/* 工具栏 */
.arena-toolbar {
    height: 42px;
    background: #1e293b;
    border-bottom: 1px solid #334155;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 14px;
    flex-shrink: 0;
}

.toolbar-left, .toolbar-center, .toolbar-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.gui-display-card {
    display: flex;
    align-items: center;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid #475569;
    border-radius: 20px;
    padding: 4px 14px;
    gap: 8px;
}

.gui-title {
    font-size: 12px;
    font-weight: 700;
    color: var(--gold);
}

.gui-tile-slot {
    transform: scale(0.7);
    margin: -10px -6px;
}

.gui-desc {
    font-size: 12px;
    color: #cbd5e1;
}

/* 按钮通用 */
.btn {
    border: none;
    border-radius: 6px;
    padding: 7px 14px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-secondary { background: #475569; color: white; }
.btn-secondary:hover { background: #64748b; }
.btn-success { background: var(--success); color: white; }
.btn-success:hover { background: #15803d; }
.btn-warning { background: var(--warning); color: #000; font-weight: 700; }
.btn-warning:hover { background: #d97706; }
.btn-lg { padding: 10px 22px; font-size: 15px; border-radius: 8px; }
.btn-sm { padding: 3px 8px; font-size: 11px; }

/* 切换开关 */
.switch-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 12px;
    color: #e2e8f0;
}

.switch-label input { display: none; }
.switch-slider {
    width: 34px;
    height: 18px;
    background: #475569;
    border-radius: 10px;
    position: relative;
    transition: 0.2s;
}

.switch-slider::before {
    content: '';
    position: absolute;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: white;
    top: 2px;
    left: 2px;
    transition: 0.2s;
}

.switch-label input:checked + .switch-slider {
    background: var(--success);
}

.switch-label input:checked + .switch-slider::before {
    transform: translateX(16px);
}

.speed-control {
    display: flex;
    align-items: center;
    background: #0f172a;
    border-radius: 6px;
    padding: 2px;
    gap: 2px;
}

.speed-label {
    font-size: 11px;
    color: #64748b;
    padding: 0 4px;
}

.speed-btn {
    background: transparent;
    border: none;
    color: #94a3b8;
    font-size: 11px;
    padding: 4px 8px;
    border-radius: 4px;
    cursor: pointer;
}

.speed-btn.active {
    background: #334155;
    color: #f8fafc;
    font-weight: 600;
}

/* ==========================================================================
   麻将牌桌布局 (对齐 esrrhs/doudizhu_ai 规格：920px × 640px 经典牌桌)
   ========================================================================== */

.mahjong-table-wrapper {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px 20px;
    background: radial-gradient(circle, #1e293b 0%, #0f172a 100%);
    overflow: auto;
    position: relative;
    box-sizing: border-box;
}

.mahjong-table {
    width: 920px;
    height: 640px;
    min-width: 920px;
    min-height: 640px;
    max-width: 920px;
    max-height: 640px;
    background: radial-gradient(ellipse at center, var(--table-green-center) 0%, var(--table-green-edge) 100%);
    border: 12px solid #78350f;
    box-shadow: 0 0 0 3px #b45309, inset 0 0 50px rgba(0, 0, 0, 0.7), 0 16px 36px rgba(0, 0, 0, 0.6);
    border-radius: 28px;
    position: relative;
    display: grid;
    grid-template-columns: 110px 1fr 110px;
    grid-template-rows: 70px minmax(0, 1fr) 130px;
    grid-template-areas:
        "info-w   north   info-e"
        "west     center  east"
        "south    south   south";
    padding: 12px 16px;
    gap: 4px;
    box-sizing: border-box;
    flex-shrink: 0;
}

/* 座位公共样式 */
.seat-zone {
    display: flex;
    position: relative;
    z-index: 10;
}

.player-info-tag {
    display: flex;
    align-items: center;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 16px;
    padding: 2px 8px;
    gap: 4px;
    font-size: 11px;
    color: #f8fafc;
    box-shadow: 0 2px 6px rgba(0,0,0,0.4);
    white-space: nowrap;
}

.player-score {
    color: var(--gold);
    font-weight: 700;
    margin-left: 2px;
}

.ting-badge {
    display: none;
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: white;
    font-size: 9px;
    font-weight: 800;
    padding: 1px 5px;
    border-radius: 8px;
    border: 1px solid #fecaca;
    animation: pulse-glow 1.5s infinite;
}

.ting-badge.active {
    display: inline-block;
}

@keyframes pulse-glow {
    0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.7); }
    70% { transform: scale(1.08); box-shadow: 0 0 0 6px rgba(239, 68, 68, 0); }
    100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(239, 68, 68, 0); }
}

/* 北家 (对家) */
.seat-north {
    grid-area: north;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding-top: 2px;
    gap: 3px;
}

.seat-north .hand-container {
    display: flex;
    gap: 2px;
    align-items: center;
    justify-content: center;
}

/* 西家 (上家) - 左右AI手牌排成两排 (双列) */
.seat-west {
    grid-area: west;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 0 2px;
}

.seat-west .hand-container {
    display: grid;
    grid-auto-flow: column;
    grid-template-rows: repeat(7, 20px);
    grid-template-columns: repeat(2, 28px);
    gap: 0 6px;
    justify-content: center;
    align-content: center;
    margin: 0;
    padding: 0;
}

.seat-west .hand-container .mj-tile,
.seat-west .meld-group .mj-tile {
    width: 20px;
    height: 28px;
    justify-self: center;
    align-self: center;
    transform: rotate(90deg);
    margin: 0;
    border-radius: 2px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
}

.seat-west .melds-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.seat-west .meld-group {
    display: grid;
    grid-auto-flow: column;
    grid-auto-rows: 20px;
    grid-template-columns: 28px;
    gap: 0;
    justify-content: center;
    align-content: center;
}

/* 东家 (下家) - 左右AI手牌排成两排 (双列) */
.seat-east {
    grid-area: east;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 0 2px;
}

.seat-east .hand-container {
    display: grid;
    grid-auto-flow: column;
    grid-template-rows: repeat(7, 20px);
    grid-template-columns: repeat(2, 28px);
    gap: 0 6px;
    justify-content: center;
    align-content: center;
    margin: 0;
    padding: 0;
}

.seat-east .hand-container .mj-tile,
.seat-east .meld-group .mj-tile {
    width: 20px;
    height: 28px;
    justify-self: center;
    align-self: center;
    transform: rotate(90deg);
    margin: 0;
    border-radius: 2px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
}

.seat-east .melds-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.seat-east .meld-group {
    display: grid;
    grid-auto-flow: column;
    grid-auto-rows: 20px;
    grid-template-columns: 28px;
    gap: 0;
    justify-content: center;
    align-content: center;
}

/* 侧边手牌透视文字大小适配 */
.seat-west .mj-tile .wan-num, .seat-east .mj-tile .wan-num,
.seat-west .mj-tile .tong-val, .seat-east .mj-tile .tong-val,
.seat-west .mj-tile .tiao-val, .seat-east .mj-tile .tiao-val {
    font-size: 10px;
    line-height: 1;
}

.seat-west .mj-tile .wan-text, .seat-east .mj-tile .wan-text,
.seat-west .mj-tile .tong-circle, .seat-east .mj-tile .tong-circle,
.seat-west .mj-tile .tiao-bar, .seat-east .mj-tile .tiao-bar {
    font-size: 8px;
    line-height: 1;
}

.seat-west .mj-tile .zi-feng, .seat-east .mj-tile .zi-feng,
.seat-west .mj-tile .zi-zhong, .seat-east .mj-tile .zi-zhong,
.seat-west .mj-tile .zi-fa, .seat-east .mj-tile .zi-fa {
    font-size: 10px;
    line-height: 1;
}

.seat-west .mj-tile .bai-box, .seat-east .mj-tile .bai-box {
    width: 9px;
    height: 12px;
}

/* 南家 (玩家自己 - 核心手牌区，直接稳立在绿呢桌面上) */
.seat-south {
    grid-area: south;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    padding: 2px 4px 4px 4px;
    position: relative;
    background: transparent;
    border: none;
    overflow: visible;
}

.player-south-row {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 2px;
    padding: 0 8px;
    overflow: visible;
}

.player-south-tag {
    position: static;
    margin: 0;
}

.south-hand-wrapper {
    display: flex;
    align-items: flex-end;
    justify-content: center;
    gap: 10px;
    width: 100%;
    max-width: 100%;
    overflow: visible; /* 必须 visible，防止选牌上浮时顶部被截断 */
    padding: 16px 4px 2px 4px; /* 顶部留足 16px 浮动空间 */
}

.user-hand-container {
    display: flex;
    gap: 2px;
    align-items: flex-end;
    flex-wrap: nowrap;
    overflow: visible;
    padding-top: 14px;
}

.drawn-card-slot {
    margin-left: 8px;
    position: relative;
    flex-shrink: 0;
    overflow: visible;
    padding-top: 14px;
}

.drawn-card-slot:not(:empty)::before {
    content: '摸牌';
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 9px;
    color: var(--gold);
    font-weight: 700;
}

/* 听牌大面板 (南家听牌常驻) */
.ting-hint-board {
    position: static;
    background: rgba(15, 23, 42, 0.92);
    border: 1px solid var(--gold);
    box-shadow: 0 2px 10px rgba(0,0,0,0.5), 0 0 10px var(--gold-glow);
    border-radius: 8px;
    padding: 3px 12px;
    display: none;
    align-items: center;
    gap: 8px;
    z-index: 40;
    backdrop-filter: blur(8px);
    margin-bottom: 4px;
    animation: fadeIn 0.2s ease;
}

.ting-hint-board.active {
    display: flex;
}

.ting-board-header {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 11px;
    font-weight: 700;
    color: var(--gold);
    white-space: nowrap;
}

.ting-board-tiles {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}

/* 互动操作按钮面板 (吃/碰/杠/胡/过) */
.action-panel {
    position: absolute;
    top: -52px;
    left: 50%;
    transform: translateX(-50%);
    display: none;
    gap: 10px;
    z-index: 50;
    animation: popUp 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.action-panel.active {
    display: flex;
}

.act-btn {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 2px solid #ffffff;
    font-size: 16px;
    font-weight: 900;
    color: white;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.15s ease, filter 0.15s ease;
}

.act-btn:hover {
    transform: scale(1.12);
    filter: brightness(1.15);
}

.act-btn.ai-rec-btn {
    position: relative;
    border: 2px solid #fde047 !important;
    box-shadow: 0 0 16px rgba(234, 179, 8, 0.9), 0 0 28px rgba(234, 179, 8, 0.5) !important;
    animation: act-rec-pulse 1.2s infinite alternate;
}

.act-btn .btn-ai-tag {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #f59e0b, #b45309);
    color: #ffffff;
    font-size: 9px;
    font-weight: 900;
    padding: 0 4px;
    border-radius: 6px;
    border: 1px solid #fef08a;
    white-space: nowrap;
    line-height: 14px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.6);
    pointer-events: none;
    z-index: 55;
}

@keyframes act-rec-pulse {
    0% { transform: scale(1); }
    100% { transform: scale(1.12); }
}

.btn-discard {
    background: radial-gradient(circle, #22c55e, #15803d);
    font-size: 16px;
    font-weight: 900;
    width: 52px;
    height: 52px;
    border: 2px solid #86efac;
    box-shadow: 0 4px 14px rgba(34, 197, 94, 0.6);
    animation: discard-pulse 1.2s infinite alternate;
}

@keyframes discard-pulse {
    0% { transform: scale(1); box-shadow: 0 0 6px rgba(34, 197, 94, 0.7); }
    100% { transform: scale(1.08); box-shadow: 0 0 18px rgba(134, 239, 172, 0.9); }
}

.btn-chi { background: radial-gradient(circle, #3b82f6, #1d4ed8); }
.btn-peng { background: radial-gradient(circle, #f59e0b, #b45309); }
.btn-gang { background: radial-gradient(circle, #8b5cf6, #6d28d9); }
.btn-hu {
    background: radial-gradient(circle, #ef4444, #991b1b);
    animation: hu-glow 1s infinite alternate;
}
.btn-pass {
    background: radial-gradient(circle, #64748b, #334155);
    font-size: 13px;
    width: 42px;
    height: 42px;
}

@keyframes hu-glow {
    0% { box-shadow: 0 0 10px #ef4444; }
    100% { box-shadow: 0 0 25px #f87171, 0 0 40px #f87171; }
}

/* 吃牌多组合选择器弹窗 */
.chi-selection-modal {
    position: absolute;
    top: -160px;
    background: #1e293b;
    border: 2px solid #3b82f6;
    border-radius: 12px;
    padding: 12px 18px;
    display: none;
    flex-direction: column;
    gap: 10px;
    z-index: 60;
    box-shadow: 0 10px 25px rgba(0,0,0,0.6);
}

.chi-selection-modal.active {
    display: flex;
}

.chi-options-list {
    display: flex;
    gap: 12px;
}

.chi-opt-card {
    display: flex;
    background: #0f172a;
    padding: 6px 10px;
    border-radius: 8px;
    cursor: pointer;
    border: 1px solid #334155;
    transition: all 0.2s;
}

.chi-opt-card:hover {
    border-color: #38bdf8;
    transform: translateY(-2px);
}

/* ==========================================================================
   桌心中心区与弃牌河
   ========================================================================== */

.table-center {
    grid-area: center;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 四方弃牌河 */
.river-zone {
    position: absolute;
    display: flex;
    flex-wrap: wrap;
    gap: 2px;
    max-width: 190px;
}

.river-north {
    top: 8px;
    flex-direction: row;
    justify-content: center;
}

.river-south {
    bottom: 8px;
    flex-direction: row;
    justify-content: center;
}

.river-west {
    left: 14px;
    width: 110px;
    flex-direction: row;
    align-items: center;
}

.river-east {
    right: 14px;
    width: 110px;
    flex-direction: row;
    align-items: center;
}

/* 中心罗盘 */
.center-compass {
    width: var(--compass-size, 72px);
    height: var(--compass-size, 72px);
    background: #111827;
    border: 2px solid #374151;
    border-radius: 14px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.6);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 5;
    flex-shrink: 0;
}

.compass-wind {
    position: absolute;
    font-size: 10px;
    font-weight: 800;
    color: #64748b;
    padding: 1px 3px;
    border-radius: 3px;
    transition: all 0.3s;
}

.wind-north { top: 2px; left: 50%; transform: translateX(-50%); }
.wind-east { right: 2px; top: 50%; transform: translateY(-50%); }
.wind-south { bottom: 2px; left: 50%; transform: translateX(-50%); }
.wind-west { left: 2px; top: 50%; transform: translateY(-50%); }

.compass-wind.turn-active {
    color: var(--gold);
    background: rgba(250, 204, 21, 0.2);
    box-shadow: 0 0 6px var(--gold-glow);
}

.compass-core {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.wall-remain-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    line-height: 1;
}

.wall-title {
    font-size: 8px;
    color: #94a3b8;
}

.wall-num {
    font-size: 14px;
    font-weight: 900;
    color: #f8fafc;
}

.turn-timer {
    font-size: 11px;
    font-weight: 700;
    color: var(--warning);
}

/* ==========================================================================
   立体的麻将牌 CSS 样式 (自适应缩放)
   ========================================================================== */

.mj-tile {
    width: 38px;
    height: 54px;
    background: var(--card-bone);
    border-radius: 4px;
    box-shadow: 0 2px 4px var(--card-shadow), inset 0 -2px 0 var(--card-side);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    cursor: default;
    border: 1px solid #d6d3c9;
    flex-shrink: 0;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.mj-tile-body {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.mj-tile-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 1px 2px;
    box-sizing: border-box;
    display: block;
    pointer-events: none;
    user-select: none;
}

/* 牌背 */
.mj-back {
    background: linear-gradient(135deg, #1e40af, #1e3a8a);
    border: 1px solid #3b82f6;
    box-shadow: 0 2px 4px rgba(0,0,0,0.4);
}

/* 尺寸变体 */
.mj-small {
    width: 22px;
    height: 31px;
    border-radius: 2px;
}
.mj-small .wan-num, .mj-small .tong-val, .mj-small .tiao-val { font-size: 11px; }
.mj-small .wan-text, .mj-small .tong-circle, .mj-small .tiao-bar { font-size: 9px; }
.mj-small .zi-feng, .mj-small .zi-zhong, .mj-small .zi-fa { font-size: 11px; }
.mj-small .bai-box { width: 10px; height: 14px; }

.mj-large {
    width: clamp(34px, 4.4vw, 48px);
    height: clamp(48px, 6.2vw, 68px);
}

/* 手牌项与点击交互 */
.user-hand-item {
    position: relative;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    overflow: visible;
    z-index: 10;
}

.user-hand-item:hover {
    z-index: 25;
}

.user-hand-container .mj-tile, .drawn-card-slot .mj-tile {
    cursor: pointer;
}

.user-hand-container .mj-tile:hover, .drawn-card-slot .mj-tile:hover {
    transform: translateY(-8px);
    box-shadow: 0 6px 14px rgba(0,0,0,0.5);
}

.user-hand-container .mj-tile.selected,
.drawn-card-slot .mj-tile.selected {
    transform: translateY(-16px) !important;
    box-shadow: 0 0 16px var(--gold), 0 8px 18px rgba(0,0,0,0.6) !important;
    border-color: var(--gold) !important;
    z-index: 35 !important;
}

/* AI推荐出牌高亮光圈 */
.mj-tile.ai-recommended {
    border: 2px solid #f59e0b !important;
    box-shadow: 0 0 16px rgba(245, 158, 11, 0.95), inset 0 0 4px rgba(245, 158, 11, 0.5) !important;
}

/* AI 推荐角标（标注在推荐打、碰、杠的牌上方） */
.mj-ai-rec-badge {
    position: absolute;
    top: -18px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: #ffffff;
    font-size: 9px;
    font-weight: 900;
    padding: 1px 5px;
    border-radius: 8px;
    white-space: nowrap;
    border: 1px solid #fef08a;
    box-shadow: 0 2px 6px rgba(245, 158, 11, 0.7);
    pointer-events: none;
    z-index: 45;
    animation: badge-pulse 1.2s infinite alternate;
}

@keyframes badge-pulse {
    0% { transform: translateX(-50%) scale(1); box-shadow: 0 2px 6px rgba(245, 158, 11, 0.6); }
    100% { transform: translateX(-50%) scale(1.08); box-shadow: 0 0 12px rgba(245, 158, 11, 0.95); }
}

/* 鬼牌高光效果 */
.mj-is-gui {
    border: 1.5px solid #eab308;
    box-shadow: 0 0 6px rgba(234, 179, 8, 0.5);
}

.mj-gui-tag {
    position: absolute;
    top: 1px;
    right: 1px;
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: white;
    font-size: 7px;
    font-weight: 800;
    padding: 1px 2px;
    border-radius: 2px;
    line-height: 1;
}

/* 可打出听牌的小徽标 */
.mj-can-ting-badge {
    position: absolute;
    top: -5px;
    left: 50%;
    transform: translateX(-50%);
    background: #16a34a;
    color: white;
    font-size: 8px;
    font-weight: 800;
    padding: 0 3px;
    border-radius: 5px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.4);
    pointer-events: none;
}

/* 牌面细节 */
.mj-wan-face, .mj-tong-face, .mj-tiao-face {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.wan-num {
    font-size: 16px;
    font-weight: 900;
    color: #b91c1c;
    line-height: 1;
}

.wan-text {
    font-size: 13px;
    font-weight: 900;
    color: #991b1b;
    line-height: 1;
}

.tong-val {
    font-size: 16px;
    font-weight: 900;
    color: #1d4ed8;
    line-height: 1;
}

.tong-circle {
    font-size: 12px;
    color: #15803d;
    line-height: 1;
}

.tiao-val {
    font-size: 16px;
    font-weight: 900;
    color: #15803d;
    line-height: 1;
}

.tiao-bird {
    font-size: 17px;
    font-weight: 900;
    color: #15803d;
}

.tiao-bar {
    font-size: 12px;
    color: #b91c1c;
    line-height: 1;
}

.zi-feng {
    font-size: 18px;
    font-weight: 900;
    color: #0f172a;
}

.zi-zhong {
    font-size: 19px;
    font-weight: 900;
    color: #dc2626;
}

.zi-fa {
    font-size: 19px;
    font-weight: 900;
    color: #16a34a;
}

.zi-bai .bai-box {
    width: 17px;
    height: 23px;
    border: 2px solid #2563eb;
    border-radius: 2px;
}

/* 剩余张数标签 */
.mj-count-badge {
    position: absolute;
    bottom: -18px;
    font-size: 10px;
    color: #cbd5e1;
    white-space: nowrap;
}

/* 副牌展示组合 */
.melds-container {
    display: flex;
    gap: 8px;
}

.meld-group {
    display: flex;
    background: rgba(0, 0, 0, 0.35);
    padding: 3px;
    border-radius: 6px;
    gap: 1px;
}

/* 打牌听牌悬浮气泡 */
.tile-ting-tooltip {
    position: fixed;
    display: none;
    background: #0f172a;
    border: 1px solid var(--gold);
    color: #f8fafc;
    padding: 8px 12px;
    border-radius: 8px;
    font-size: 12px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.6);
    pointer-events: none;
    z-index: 100;
    white-space: nowrap;
}

/* ==========================================================================
   侧边抽屉面板 (记牌器 & 日志)
   ========================================================================== */

.side-drawer {
    position: absolute;
    right: 0;
    top: 52px;
    width: 320px;
    height: calc(100% - 52px);
    background: #111827;
    border-left: 1px solid #1f2937;
    display: flex;
    flex-direction: column;
    transform: translateX(100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 45;
}

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

.drawer-header {
    height: 44px;
    padding: 0 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid #1f2937;
}

.drawer-header h3 { font-size: 14px; font-weight: 700; color: #e2e8f0; }
.btn-close {
    background: transparent;
    border: none;
    color: #94a3b8;
    font-size: 20px;
    cursor: pointer;
}

.drawer-section {
    padding: 12px 16px;
    border-bottom: 1px solid #1f2937;
}

.section-title {
    font-size: 12px;
    font-weight: 700;
    color: var(--gold);
    margin-bottom: 8px;
}

.radar-content {
    font-size: 12px;
    color: #cbd5e1;
    background: #1f2937;
    padding: 8px 12px;
    border-radius: 6px;
    line-height: 1.5;
}

.counter-groups {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: 220px;
    overflow-y: auto;
}

.counter-row {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}

.counter-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: #1e293b;
    padding: 4px;
    border-radius: 4px;
    width: 28px;
    font-size: 10px;
}

.counter-num {
    font-weight: 800;
    color: #38bdf8;
}

.counter-num.empty {
    color: #ef4444;
}

.logs-container {
    flex: 1;
    max-height: 250px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 11px;
    color: #94a3b8;
}

.log-entry {
    background: rgba(30, 41, 59, 0.4);
    padding: 4px 8px;
    border-radius: 4px;
    line-height: 1.4;
}

/* ==========================================================================
   算法实验室 (Lab View)
   ========================================================================== */

.lab-container {
    padding: 24px;
    max-width: 1000px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
    overflow-y: auto;
    height: 100%;
}

.lab-intro-banner {
    background: linear-gradient(135deg, #1e293b, #0f172a);
    padding: 16px 20px;
    border-radius: 12px;
    border: 1px solid #334155;
}

.lab-intro-banner h2 { font-size: 18px; color: var(--gold); margin-bottom: 4px; }
.lab-intro-banner p { font-size: 13px; color: #94a3b8; }

.lab-card {
    background: #1e293b;
    border: 1px solid #334155;
    border-radius: 12px;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.lab-card-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 14px;
    font-weight: 700;
    color: #f1f5f9;
}

.card-count-indicator {
    font-size: 12px;
    color: #94a3b8;
    display: flex;
    align-items: center;
    gap: 8px;
}

.presets-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.preset-btn {
    background: #334155;
    border: 1px solid #475569;
    color: #e2e8f0;
    padding: 6px 12px;
    font-size: 12px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.15s;
}

.preset-btn:hover {
    background: #475569;
    border-color: #38bdf8;
    color: white;
}

.lab-hand-rack {
    min-height: 80px;
    background: #0f172a;
    border: 2px dashed #475569;
    border-radius: 8px;
    padding: 10px;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    align-items: center;
}

.lab-gui-selector {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tile-picker-grid {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.tile-picker-row {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.tile-picker-row .mj-tile {
    cursor: pointer;
}

.tile-picker-row .mj-tile:hover {
    transform: translateY(-4px);
}

.algo-results-dashboard {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-top: 8px;
}

.result-box {
    background: #0f172a;
    border: 1px solid #334155;
    border-radius: 8px;
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.res-label {
    font-size: 12px;
    font-weight: 700;
    color: #94a3b8;
}

.res-status {
    font-size: 16px;
    font-weight: 800;
    color: #f8fafc;
}

.res-time {
    font-size: 11px;
    color: #38bdf8;
}

.res-ting-list {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}

/* ==========================================================================
   弹窗 (Modals)
   ========================================================================== */

.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(4px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 100;
}

.modal-backdrop.active {
    display: flex;
}

.modal-box {
    background: #1e293b;
    border: 1px solid #475569;
    border-radius: 14px;
    width: 440px;
    max-width: 90vw;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.7);
    overflow: hidden;
    animation: fadeIn 0.2s ease;
}

.modal-header {
    padding: 16px 20px;
    border-bottom: 1px solid #334155;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 { font-size: 16px; color: #f8fafc; }
.modal-close {
    background: transparent;
    border: none;
    color: #94a3b8;
    font-size: 22px;
    cursor: pointer;
}

.modal-body {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.radio-options {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.radio-card {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    background: #0f172a;
    border: 1px solid #334155;
    padding: 10px 14px;
    border-radius: 8px;
    cursor: pointer;
    transition: border-color 0.2s;
}

.radio-card:hover { border-color: #38bdf8; }
.radio-card input { margin-top: 3px; }
.radio-text { display: flex; flex-direction: column; gap: 2px; }
.radio-text strong { font-size: 13px; color: #f8fafc; }
.radio-text small { font-size: 11px; color: #94a3b8; }

.modal-footer {
    padding: 14px 20px;
    border-top: 1px solid #334155;
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

/* 结算大弹窗 */
.win-modal-box {
    width: 520px;
}

.win-banner {
    background: linear-gradient(135deg, #b91c1c, #991b1b);
    padding: 20px;
    text-align: center;
}

.win-icon { font-size: 40px; margin-bottom: 6px; }
.win-banner h2 { font-size: 22px; color: #fef08a; }

.win-content {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.win-details-row {
    display: flex;
    justify-content: space-around;
    background: #0f172a;
    padding: 12px;
    border-radius: 8px;
}

.win-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.win-item .label { font-size: 11px; color: #94a3b8; }
.gold-text { color: var(--gold); font-size: 16px; font-weight: 800; }

.win-patterns-box {
    background: #0f172a;
    padding: 10px 14px;
    border-radius: 8px;
}

.pattern-title { font-size: 12px; color: #94a3b8; margin-bottom: 6px; }
.pattern-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.pattern-tag {
    background: rgba(234, 179, 8, 0.15);
    border: 1px solid var(--gold);
    color: var(--gold);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
}

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