/* ===== 全局变量与基础 ===== */
:root {
    --pink: #FF6B9D;
    --yellow: #FFD93D;
    --green: #6BCB77;
    --orange: #FF8C42;
    --blue: #4ECDC4;
    --purple: #A78BFA;
    --red: #FF6B6B;
    --bg: #FFF5F5;
    --card-bg: #FFFFFF;
    --text: #2D3436;
    --text-light: #636E72;
    --shadow: 0 4px 15px rgba(0,0,0,0.08);
    --shadow-hover: 0 8px 25px rgba(0,0,0,0.15);
    --radius: 16px;
    --radius-sm: 10px;
    --radius-lg: 24px;
}

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

body {
    font-family: -apple-system, "Microsoft YaHei", "PingFang SC", "Helvetica Neue", sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    -webkit-tap-highlight-color: transparent;
}

/* ===== 主页头部 ===== */
.header {
    background: linear-gradient(135deg, var(--pink), var(--orange));
    color: white;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 20px rgba(255,107,157,0.3);
}

.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 12px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.logo-icon { font-size: 32px; }

.logo h1 {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: 1px;
}

.logo-badge {
    background: var(--yellow);
    color: var(--text);
    font-size: 12px;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 20px;
}

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

.icon-btn {
    background: rgba(255,255,255,0.25);
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    font-size: 20px;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-btn:hover { background: rgba(255,255,255,0.4); transform: scale(1.1); }
.icon-btn:active { transform: scale(0.95); }

/* ===== 搜索栏 ===== */
.search-bar {
    max-width: 1200px;
    margin: 16px auto 0;
    padding: 0 20px;
    position: relative;
}

.search-bar input {
    width: 100%;
    padding: 12px 40px 12px 44px;
    border: 2px solid #FFE0E6;
    border-radius: var(--radius);
    font-size: 16px;
    background: white;
    outline: none;
    transition: border-color 0.2s;
}

.search-bar input:focus { border-color: var(--pink); }

.search-icon {
    position: absolute;
    left: 34px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 18px;
}

.clear-btn {
    position: absolute;
    right: 30px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    font-size: 16px;
    color: var(--text-light);
    cursor: pointer;
    padding: 4px 8px;
}

/* ===== 分类标签 ===== */
.category-bar {
    max-width: 1200px;
    margin: 14px auto 0;
    padding: 0 20px;
    display: flex;
    gap: 8px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.category-bar::-webkit-scrollbar { display: none; }

.cat-btn {
    padding: 8px 16px;
    border: 2px solid #FFE0E6;
    border-radius: 25px;
    background: white;
    font-size: 14px;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.2s;
    font-weight: 500;
}

.cat-btn:hover { border-color: var(--pink); color: var(--pink); }
.cat-btn.active { background: var(--pink); color: white; border-color: var(--pink); }

/* ===== 游戏网格 ===== */
.game-grid {
    max-width: 1200px;
    margin: 16px auto 0;
    padding: 0 20px;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 14px;
}

.game-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 16px 12px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: var(--shadow);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.game-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 4px;
    border-radius: var(--radius) var(--radius) 0 0;
}

.game-card[data-cat="puzzle"]::before { background: var(--purple); }
.game-card[data-cat="memory"]::before { background: var(--blue); }
.game-card[data-cat="reaction"]::before { background: var(--orange); }
.game-card[data-cat="math"]::before { background: var(--green); }
.game-card[data-cat="chinese"]::before { background: var(--red); }
.game-card[data-cat="music"]::before { background: var(--pink); }
.game-card[data-cat="english"]::before { background: #5B86E5; }
.game-card[data-cat="fun"]::before { background: var(--yellow); }

.game-card:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: var(--shadow-hover);
    border-color: var(--pink);
}

.game-card:active { transform: scale(0.97); }

.card-icon {
    font-size: 40px;
    display: block;
    margin-bottom: 8px;
    transition: transform 0.3s;
}

.game-card:hover .card-icon { transform: scale(1.15) rotate(-5deg); }

.card-name {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 6px;
    line-height: 1.3;
}

.card-cat {
    font-size: 11px;
    color: var(--text-light);
    background: #F5F5F5;
    padding: 2px 8px;
    border-radius: 10px;
    display: inline-block;
}

.card-fav {
    position: absolute;
    top: 8px;
    right: 8px;
    font-size: 14px;
    opacity: 0;
    transition: opacity 0.2s;
}

.game-card:hover .card-fav { opacity: 1; }
.card-fav.active { opacity: 1; }

/* ===== 空状态 ===== */
.empty-state {
    text-align: center;
    padding: 60px 20px;
}

.empty-icon { font-size: 64px; display: block; margin-bottom: 16px; }

/* ===== 最近游玩 ===== */
.recent-section {
    max-width: 1200px;
    margin: 20px auto 0;
    padding: 0 20px;
}

.recent-section h2 {
    font-size: 18px;
    margin-bottom: 12px;
    color: var(--text);
}

.recent-grid {
    display: flex;
    gap: 12px;
    overflow-x: auto;
    padding-bottom: 8px;
}

.recent-card {
    background: white;
    border-radius: var(--radius-sm);
    padding: 10px 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    white-space: nowrap;
    box-shadow: var(--shadow);
    transition: transform 0.2s;
}

.recent-card:hover { transform: scale(1.05); }

/* ===== 按钮 ===== */
.btn {
    padding: 12px 28px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    background: linear-gradient(135deg, var(--pink), var(--orange));
    color: white;
    box-shadow: 0 4px 15px rgba(255,107,157,0.3);
}

.btn:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(255,107,157,0.4); }
.btn:active { transform: scale(0.97); }

.btn-secondary {
    background: white;
    color: var(--text);
    box-shadow: var(--shadow);
    border: 2px solid #eee;
}

.btn-start {
    font-size: 20px;
    padding: 16px 40px;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

/* ===== 游戏页面 ===== */
.game-page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--bg);
}

.game-header {
    background: linear-gradient(135deg, var(--pink), var(--orange));
    color: white;
    padding: 10px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 2px 15px rgba(255,107,157,0.3);
    z-index: 10;
}

.back-btn {
    background: rgba(255,255,255,0.2);
    border: none;
    color: white;
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    cursor: pointer;
    transition: background 0.2s;
}

.back-btn:hover { background: rgba(255,255,255,0.35); }

.game-info { text-align: center; flex: 1; }

.game-title { font-size: 16px; font-weight: 700; }

.game-stats { display: flex; gap: 16px; justify-content: center; margin-top: 2px; }

.stat { font-size: 14px; }

.game-controls { display: flex; gap: 6px; }

.game-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

/* ===== 开始界面 ===== */
.game-start-screen, .game-end-screen {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
    z-index: 5;
}

.start-content, .end-content { text-align: center; padding: 20px; }

.start-emoji, .end-emoji { font-size: 72px; display: block; margin-bottom: 16px; }

.start-content h2, .end-content h2 {
    font-size: 26px;
    margin-bottom: 8px;
}

.start-desc {
    color: var(--text-light);
    margin-bottom: 24px;
    font-size: 15px;
}

.end-score {
    font-size: 48px;
    font-weight: 800;
    color: var(--pink);
    margin: 12px 0;
}

.end-stars { font-size: 36px; margin-bottom: 20px; }

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

/* ===== 暂停覆盖 ===== */
.pause-overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
}

.pause-content {
    text-align: center;
    color: white;
}

.pause-content span { font-size: 64px; display: block; margin-bottom: 12px; }
.pause-content h2 { font-size: 24px; margin-bottom: 16px; }

/* ===== 游戏内容区 ===== */
.game-content {
    flex: 1;
    padding: 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow-y: auto;
}

/* ===== 游戏通用组件 ===== */
.game-question {
    font-size: 22px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 20px;
    color: var(--text);
}

.game-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    width: 100%;
    max-width: 400px;
}

.game-option {
    padding: 14px;
    border: 2px solid #eee;
    border-radius: var(--radius-sm);
    background: white;
    font-size: 18px;
    cursor: pointer;
    transition: all 0.2s;
    text-align: center;
}

.game-option:hover { border-color: var(--pink); transform: scale(1.03); }
.game-option:active { transform: scale(0.97); }
.game-option.correct { background: #D4EDDA; border-color: var(--green); }
.game-option.wrong { background: #F8D7DA; border-color: var(--red); }

.game-progress {
    width: 100%;
    max-width: 400px;
    height: 8px;
    background: #eee;
    border-radius: 4px;
    margin-bottom: 20px;
    overflow: hidden;
}

.game-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--pink), var(--orange));
    border-radius: 4px;
    transition: width 0.3s;
}

.game-hint {
    font-size: 14px;
    color: var(--text-light);
    text-align: center;
    margin-top: 12px;
}

/* 记忆翻牌 */
.memory-grid {
    display: grid;
    gap: 8px;
    max-width: 400px;
    width: 100%;
}

.memory-card {
    aspect-ratio: 1;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--pink), var(--orange));
    color: white;
    font-weight: 700;
    transition: transform 0.3s;
    user-select: none;
}

.memory-card.flipped { background: white; box-shadow: var(--shadow); transform: rotateY(180deg); }
.memory-card.matched { background: #D4EDDA; border: 2px solid var(--green); }

/* 连线配对 */
.match-container {
    display: flex;
    gap: 40px;
    justify-content: center;
    align-items: center;
    width: 100%;
    max-width: 500px;
}

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

.match-item {
    padding: 12px 20px;
    border: 2px solid #eee;
    border-radius: var(--radius-sm);
    background: white;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.2s;
    text-align: center;
    min-width: 100px;
}

.match-item:hover { border-color: var(--blue); }
.match-item.selected { border-color: var(--pink); background: #FFF0F3; }
.match-item.matched { background: #D4EDDA; border-color: var(--green); }
.match-item.wrong { background: #F8D7DA; border-color: var(--red); }

/* 排序 */
.sort-container {
    display: flex;
    flex-direction: column;
    gap: 8px;
    width: 100%;
    max-width: 350px;
}

.sort-item {
    padding: 12px 16px;
    border: 2px solid #eee;
    border-radius: var(--radius-sm);
    background: white;
    font-size: 16px;
    cursor: grab;
    text-align: center;
    transition: all 0.2s;
    user-select: none;
}

.sort-item:active { cursor: grabbing; border-color: var(--pink); }
.sort-item.drag-over { border-color: var(--blue); background: #F0F7FF; }

/* 点击/反应 */
.reaction-area {
    width: 100%;
    max-width: 400px;
    height: 350px;
    background: white;
    border-radius: var(--radius);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow);
    cursor: pointer;
}

.reaction-target {
    position: absolute;
    font-size: 36px;
    cursor: pointer;
    transition: transform 0.1s;
    animation: pop 0.3s ease-out;
}

@keyframes pop {
    0% { transform: scale(0); }
    80% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

/* 数学 */
.math-display {
    font-size: 40px;
    font-weight: 800;
    text-align: center;
    margin-bottom: 20px;
    color: var(--text);
}

.math-input {
    font-size: 28px;
    width: 120px;
    text-align: center;
    border: 3px solid var(--pink);
    border-radius: var(--radius-sm);
    padding: 8px;
    outline: none;
}

/* 画板 */
.draw-area {
    border: 3px solid #eee;
    border-radius: var(--radius);
    background: white;
    cursor: crosshair;
    touch-action: none;
}

.color-palette {
    display: flex;
    gap: 6px;
    margin-top: 10px;
    flex-wrap: wrap;
    justify-content: center;
}

.color-btn {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid #eee;
    cursor: pointer;
    transition: transform 0.2s;
}

.color-btn:hover { transform: scale(1.2); }
.color-btn.active { border-color: var(--text); transform: scale(1.2); }

/* 音乐 */
.piano-keys {
    display: flex;
    gap: 3px;
    margin-top: 12px;
}

.piano-key {
    width: 44px;
    height: 140px;
    background: white;
    border: 2px solid #ddd;
    border-radius: 0 0 6px 6px;
    cursor: pointer;
    transition: all 0.1s;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding-bottom: 8px;
    font-size: 12px;
    color: #999;
}

.piano-key:active, .piano-key.pressed { background: var(--pink); color: white; }

/* ===== 页脚 ===== */
.footer {
    text-align: center;
    padding: 30px 20px;
    color: var(--text-light);
    font-size: 14px;
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
    .game-grid { grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 10px; }
    .card-icon { font-size: 32px; }
    .card-name { font-size: 13px; }
    .logo h1 { font-size: 18px; }
    .game-options { grid-template-columns: 1fr; }
    .game-question { font-size: 18px; }
    .math-display { font-size: 32px; }
}

@media (max-width: 480px) {
    .game-grid { grid-template-columns: repeat(3, 1fr); gap: 8px; }
    .game-card { padding: 12px 8px; }
    .card-icon { font-size: 28px; margin-bottom: 4px; }
    .card-name { font-size: 12px; }
    .header-inner { padding: 10px 14px; }
}

/* ===== 动画 ===== */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.game-card { animation: fadeIn 0.4s ease-out; }

/* ===== 密码锁屏 ===== */
.lock-screen {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(135deg, #FF6B9D 0%, #FF8C42 50%, #FFD93D 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    overflow: hidden;
}

.lock-content {
    background: white;
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    text-align: center;
    box-shadow: 0 20px 60px rgba(0,0,0,0.2);
    position: relative;
    z-index: 2;
    width: 90%;
    max-width: 360px;
    animation: lockPop 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes lockPop {
    0% { transform: scale(0.8) translateY(20px); opacity: 0; }
    100% { transform: scale(1) translateY(0); opacity: 1; }
}

.lock-icon {
    font-size: 64px;
    margin-bottom: 12px;
    animation: bounce 2s infinite;
}

.lock-content h2 {
    font-size: 24px;
    color: var(--text);
    margin-bottom: 8px;
}

.lock-tip {
    color: var(--text-light);
    font-size: 14px;
    margin-bottom: 24px;
}

.lock-form {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.password-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.password-wrapper input {
    width: 100%;
    padding: 14px 44px 14px 16px;
    border: 2px solid #FFE0E6;
    border-radius: var(--radius-sm);
    font-size: 16px;
    outline: none;
    transition: border-color 0.2s;
}

.password-wrapper input:focus {
    border-color: var(--pink);
}

.password-wrapper input.shake {
    animation: shake 0.5s;
    border-color: var(--red);
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-8px); }
    40%, 80% { transform: translateX(8px); }
}

.toggle-visibility {
    position: absolute;
    right: 12px;
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    padding: 4px;
    transition: transform 0.2s;
}

.toggle-visibility:hover { transform: scale(1.2); }

.error-msg {
    color: var(--red);
    font-size: 13px;
    height: 18px;
    opacity: 0;
    transition: opacity 0.2s;
}

.error-msg.show { opacity: 1; }

.btn-unlock {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 16px;
    padding: 14px 24px;
    animation: none;
}

.btn-unlock:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.lock-hint {
    margin-top: 20px;
    font-size: 12px;
    color: var(--text-light);
}

.lock-particles {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
    align-content: space-around;
    z-index: 1;
    pointer-events: none;
}

.lock-particles span {
    font-size: 32px;
    opacity: 0.15;
    animation: float 6s ease-in-out infinite;
}

.lock-particles span:nth-child(1) { animation-delay: 0s; }
.lock-particles span:nth-child(2) { animation-delay: 0.5s; }
.lock-particles span:nth-child(3) { animation-delay: 1s; }
.lock-particles span:nth-child(4) { animation-delay: 1.5s; }
.lock-particles span:nth-child(5) { animation-delay: 2s; }
.lock-particles span:nth-child(6) { animation-delay: 2.5s; }
.lock-particles span:nth-child(7) { animation-delay: 3s; }
.lock-particles span:nth-child(8) { animation-delay: 3.5s; }
.lock-particles span:nth-child(9) { animation-delay: 4s; }
.lock-particles span:nth-child(10) { animation-delay: 4.5s; }

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(10deg); }
}

/* 解锁动画 */
.unlock-animation {
    animation: unlockFade 0.4s ease-out forwards;
}

@keyframes unlockFade {
    to {
        opacity: 0;
        transform: scale(1.1);
    }
}

/* ===== 画布/Canvas游戏通用 ===== */
canvas.game-canvas {
    border-radius: var(--radius-sm);
    max-width: 100%;
}