/* codex: 2026-09-22 实现青蛙跳跃荷塘视觉主题、响应式棋盘与控制面板样式（弹窗已拆分至modal.css） */

:root {
    --bg-water: linear-gradient(135deg, #134e5e 0%, #71b280 100%);
    --card-bg: rgba(255, 255, 255, 0.94);
    --primary-color: #2e7d32;
    --primary-hover: #1b5e20;
    --accent-color: #ff9800;
    --text-main: #263238;
    --text-muted: #546e7a;
    --leaf-color: #43a047;
    --leaf-edge: #2e7d32;
    --empty-slot-bg: rgba(255, 255, 255, 0.25);
    --shadow-soft: 0 8px 24px rgba(0, 0, 0, 0.12);
    --border-radius: 16px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    background: var(--bg-water);
    min-height: 100vh;
    color: var(--text-main);
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 16px 8px;
}

.game-container {
    width: 100%;
    max-width: 960px;
    background: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-soft);
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 18px;
    backdrop-filter: blur(12px);
}

/* 顶栏 */
.header-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    border-bottom: 2px solid #e0f2f1;
    padding-bottom: 14px;
}

.header-title h1 {
    font-size: 1.6rem;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

.header-title p {
    font-size: 0.88rem;
    color: var(--text-muted);
    margin-top: 2px;
}

.header-tools {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.btn-tool {
    background: #e8f5e9;
    border: 1px solid #c8e6c9;
    color: #2e7d32;
    padding: 7px 13px;
    border-radius: 20px;
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.btn-tool:hover {
    background: #c8e6c9;
    transform: translateY(-2px);
}

/* 统计数据栏 */
.stats-bar {
    display: flex;
    justify-content: space-around;
    background: #f1f8e9;
    border: 1px solid #dcedc8;
    border-radius: 12px;
    padding: 12px;
    gap: 10px;
    text-align: center;
}

.stat-item .stat-label {
    font-size: 0.82rem;
    color: var(--text-muted);
    display: block;
}

.stat-item .stat-value {
    font-size: 1.35rem;
    font-weight: bold;
    color: #1b5e20;
}

.stat-item .stat-value.highlight {
    color: #e65100;
}

/* 目标对比条 */
.target-preview-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    background: #e0f2f1;
    padding: 8px 14px;
    border-radius: 10px;
    font-size: 0.85rem;
    color: #004d40;
}

.target-badge {
    font-weight: bold;
    background: #00796b;
    color: white;
    padding: 2px 8px;
    border-radius: 6px;
    font-size: 0.78rem;
}

/* 荷塘棋盘容器 */
.pond-stage {
    background: radial-gradient(circle, #80deea 0%, #26a69a 80%, #00796b 100%);
    border-radius: 20px;
    padding: 30px 16px;
    box-shadow: inset 0 4px 16px rgba(0, 0, 0, 0.2), 0 8px 20px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow-x: auto;
    border: 4px solid #80cbc4;
}

.pond-slots {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    min-width: max-content;
    padding: 10px 0;
}

/* 单个荷叶格子 */
.pond-slot {
    width: 84px;
    height: 84px;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    user-select: none;
}

.lotus-leaf {
    width: 80px;
    height: 80px;
    background: radial-gradient(circle, #66bb6a 30%, #388e3c 100%);
    border-radius: 50%;
    position: absolute;
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.25);
    border: 3px solid #81c784;
    display: flex;
    justify-content: center;
    align-items: flex-end;
    padding-bottom: 4px;
}

/* 荷叶豁口纹理 */
.lotus-leaf::after {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    width: 0;
    height: 0;
    border-left: 7px solid transparent;
    border-right: 7px solid transparent;
    border-top: 14px solid #26a69a;
    transform: translateX(-50%);
}

.slot-number {
    font-size: 0.72rem;
    color: rgba(255, 255, 255, 0.85);
    font-weight: bold;
    z-index: 1;
}

/* 空格状态 */
.pond-slot.empty-slot .lotus-leaf {
    background: radial-gradient(circle, #a5d6a7 20%, #4caf50 90%);
    opacity: 0.65;
    border-style: dashed;
}

/* 青蛙元素包装 */
.frog-wrapper {
    position: relative;
    z-index: 2;
    width: 76px;
    height: 76px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.frog-avatar-wrap {
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.frog-svg {
    width: 68px;
    height: 68px;
    filter: drop-shadow(0 4px 5px rgba(0, 0, 0, 0.25));
}

.meme-face {
    font-size: 2.3rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    line-height: 1;
}

.meme-sub {
    font-size: 0.65rem;
    font-weight: bold;
    color: #fff;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.8);
    margin-top: 2px;
}

/* 控制按钮栏 */
.action-controls {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

.btn-action {
    padding: 11px 22px;
    border-radius: 24px;
    font-size: 0.96rem;
    font-weight: bold;
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.btn-action:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 14px rgba(0, 0, 0, 0.15);
}

.btn-undo { background: #e0e0e0; color: #424242; }
.btn-undo:hover { background: #d6d6d6; }

.btn-hint { background: #fff3e0; color: #e65100; border: 1px solid #ffe0b2; }
.btn-hint:hover { background: #ffe0b2; }

.btn-reset { background: #ffebee; color: #c62828; border: 1px solid #ffcdd2; }
.btn-reset:hover { background: #ffcdd2; }

.btn-demo { background: #e8eaf6; color: #283593; border: 1px solid #c5cae9; }
.btn-demo:hover { background: #c5cae9; }

/* 教学演示面板 */
.demo-panel {
    background: #ede7f6;
    border: 2px solid #b39ddb;
    border-radius: 14px;
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.demo-panel.hidden { display: none; }

.demo-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: bold;
    color: #4527a0;
}

.demo-controls-row {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.btn-demo-ctrl {
    padding: 6px 12px;
    border-radius: 16px;
    border: 1px solid #9575cd;
    background: white;
    color: #512da8;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 600;
}

.btn-demo-ctrl:hover { background: #d1c4e9; }

.demo-explain-card {
    background: white;
    border-radius: 10px;
    padding: 10px 14px;
    font-size: 0.9rem;
    line-height: 1.5;
    color: #311b92;
    border-left: 4px solid #7e57c2;
}

/* 吉祥物导师鼓励栏 */
.mascot-section {
    display: flex;
    align-items: center;
    gap: 14px;
    background: #f1f8e9;
    border: 1px solid #c5e1a5;
    border-radius: 14px;
    padding: 12px 18px;
}

.mascot-avatar {
    font-size: 2.2rem;
    animation: leafFloat 3s infinite ease-in-out;
}

.mascot-speech {
    font-size: 0.92rem;
    color: #2e7d32;
    line-height: 1.5;
    font-weight: 500;
}

/* 响应式调整 */
@media (max-width: 600px) {
    .game-container { padding: 16px 12px; }
    .pond-slot { width: 62px; height: 62px; }
    .lotus-leaf { width: 58px; height: 58px; }
    .frog-wrapper { width: 56px; height: 56px; }
    .frog-svg { width: 50px; height: 50px; }
    .meme-face { font-size: 1.7rem; }
    .btn-action { padding: 9px 14px; font-size: 0.88rem; }
}