/* ── 快乐识字 页面样式 ── */
.kl-wrap {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px 0 60px;
    position: relative;
    z-index: 1;
}

/* ── 浮动装饰元素 ── */
.kl-floating-decoration {
    position: fixed;
    pointer-events: none;
    z-index: 0;
    opacity: 0.15;
    font-size: 3rem;
    animation: kl-float 6s ease-in-out infinite;
}
@keyframes kl-float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(5deg); }
}

/* ── 开始页面 ── */
.kl-start-screen {
    text-align: center;
    padding: 60px 20px;
}
.kl-mascot {
    font-size: 6rem;
    margin-bottom: 20px;
    animation: kl-mascotBounce 2s ease infinite;
}
@keyframes kl-mascotBounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}
@keyframes kl-pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}
.kl-start-screen h1 {
    font-size: 3rem;
    font-weight: 800;
    color: #FF6B9D;
    margin-bottom: 15px;
    text-shadow: 3px 3px 0px #FFE66D;
}
.kl-start-screen p {
    font-size: 1.2rem;
    color: #888;
    margin-bottom: 30px;
}
.kl-start-btn {
    background: linear-gradient(135deg, #FF6B9D, #4ECDC4);
    color: #fff;
    padding: 20px 80px;
    font-size: 1.8rem;
    font-weight: 700;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    box-shadow: 0 10px 30px rgba(255, 107, 157, 0.3);
    transition: all 0.3s ease;
    font-family: inherit;
}
.kl-start-btn:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 15px 40px rgba(255, 107, 157, 0.4);
}
.kl-continue-btn {
    padding: 15px 50px;
    font-size: 1.3rem;
    margin-top: 20px;
}
.kl-test-voice-btn {
    margin-top: 15px;
    padding: 12px 40px;
    font-size: 1.2rem;
    background: linear-gradient(135deg, #4ECDC4, #45B7AA) !important;
}
.kl-voice-status {
    margin-top: 15px;
    font-size: 1rem;
    color: #888;
    min-height: 24px;
}
.kl-voice-success {
    color: #27ae60 !important;
}
.kl-voice-error {
    color: #e74c3c !important;
}

/* ── 语音播放指示器 ── */
.kl-voice-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 10px 0;
    padding: 8px 20px;
    background: var(--bg-card, #fff);
    border-radius: 20px;
    box-shadow: 0 2px 10px rgba(255, 107, 157, 0.2);
    border: 1px solid var(--border-primary, #e2e8f0);
}
.kl-voice-wave {
    display: inline-block;
    width: 4px;
    height: 16px;
    background: #FF6B9D;
    border-radius: 2px;
    margin: 0 2px;
    animation: kl-voiceWave 0.5s ease-in-out infinite;
}
.kl-voice-wave:nth-child(2) {
    animation-delay: 0.1s;
}
.kl-voice-wave:nth-child(3) {
    animation-delay: 0.2s;
}
@keyframes kl-voiceWave {
    0%, 100% { transform: scaleY(0.5); }
    50% { transform: scaleY(1.2); }
}

/* ── 标题区域 ── */
.kl-header {
    text-align: center;
    padding: 30px 0;
}
.kl-header h1 {
    font-size: 3rem;
    font-weight: 800;
    color: #FF6B9D;
    text-shadow: 3px 3px 0px #FFE66D;
    margin-bottom: 10px;
}
.kl-subtitle {
    font-size: 1.2rem;
    color: #4ECDC4;
    font-weight: 700;
    margin-bottom: 20px;
}

/* ── 进度条 ── */
.kl-progress-bar {
    width: 100%;
    max-width: 400px;
    height: 20px;
    background: #FFE4EC;
    border-radius: 50px;
    margin: 20px auto;
    overflow: hidden;
    border: 3px solid #FFB8D0;
}
.kl-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #FF6B9D, #4ECDC4);
    border-radius: 50px;
    transition: width 0.5s ease;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-right: 10px;
}
.kl-progress-fill::after {
    content: '⭐';
    font-size: 0.8rem;
}

/* ── 汉字卡片区域 ── */
.kl-card-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 350px;
    margin: 20px 0;
}
.kl-character-card {
    background: var(--bg-card, #fff);
    width: 280px;
    height: 280px;
    border-radius: 30px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: 
        0 10px 40px rgba(255, 107, 157, 0.2),
        0 0 0 8px #FFB8D0,
        0 0 0 12px #FFE66D;
    position: relative;
    animation: kl-cardAppear 0.6s ease;
}
@keyframes kl-cardAppear {
    0% { transform: scale(0.5) rotate(-10deg); opacity: 0; }
    60% { transform: scale(1.05) rotate(2deg); }
    100% { transform: scale(1) rotate(0deg); opacity: 1; }
}
.kl-character-display {
    font-size: 8rem;
    font-weight: 900;
    color: var(--text-primary, #2D3436);
    line-height: 1;
    margin-bottom: 10px;
}
.kl-pinyin-display {
    font-size: 1.5rem;
    color: #4ECDC4;
    font-weight: 700;
}
.kl-card-number {
    position: absolute;
    top: -15px;
    right: -15px;
    background: #FFE66D;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    font-size: 1.2rem;
    color: var(--text-primary, #2D3436);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

/* ── 按钮区域 ── */
.kl-button-group {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin: 30px 0;
    flex-wrap: wrap;
}
.kl-btn {
    padding: 18px 50px;
    border: none;
    border-radius: 50px;
    font-size: 1.3rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    font-family: inherit;
}
.kl-btn-know {
    background: linear-gradient(135deg, #00B894, #00CEC9);
    color: #fff;
    box-shadow: 0 6px 20px rgba(0, 184, 148, 0.3);
}
.kl-btn-know:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 10px 30px rgba(0, 184, 148, 0.4);
}
.kl-btn-dont-know {
    background: linear-gradient(135deg, #FF6B9D, #FF8E53);
    color: #fff;
    box-shadow: 0 6px 20px rgba(255, 107, 157, 0.3);
}
.kl-btn-dont-know:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 10px 30px rgba(255, 107, 157, 0.4);
}
.kl-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255,255,255,0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}
.kl-btn:active::before {
    width: 300px;
    height: 300px;
}
.kl-btn:active {
    transform: scale(0.95);
}

/* ── 统计信息 ── */
.kl-stats {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin: 20px 0;
    flex-wrap: wrap;
}
.kl-stat-item {
    background: var(--bg-card, #fff);
    padding: 15px 30px;
    border-radius: 20px;
    box-shadow: 0 4px 15px rgba(255, 107, 157, 0.2);
    text-align: center;
    border: 1px solid var(--border-primary, #e2e8f0);
}
.kl-stat-number {
    font-size: 2rem;
    font-weight: 900;
    color: #FF6B9D;
}
.kl-stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary, #64748b);
    margin-top: 5px;
}

/* ── 已学汉字展示 ── */
.kl-learned-section {
    margin-top: 40px;
    padding: 20px;
    background: var(--bg-card, #fff);
    border-radius: 20px;
    box-shadow: 0 4px 20px rgba(255, 107, 157, 0.2);
    border: 1px solid var(--border-primary, #e2e8f0);
}
.kl-learned-section h3 {
    color: #FF6B9D;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    text-align: center;
}
.kl-learned-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(60px, 1fr));
    gap: 10px;
}
.kl-learned-char {
    background: linear-gradient(135deg, #00B894, #00CEC9);
    color: #fff;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 15px;
    font-size: 1.8rem;
    font-weight: 700;
    animation: kl-charAppear 0.3s ease;
}
@keyframes kl-charAppear {
    0% { transform: scale(0); }
    60% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

/* ── 庆祝动画 ── */
.kl-celebration {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1000;
    display: none;
}
.kl-celebration.active {
    display: block;
}
.kl-confetti {
    position: absolute;
    width: 15px;
    height: 15px;
    animation: kl-confettiFall 3s ease-out forwards;
}
@keyframes kl-confettiFall {
    0% { transform: translateY(-100px) rotate(0deg); opacity: 1; }
    100% { transform: translateY(100vh) rotate(720deg); opacity: 0; }
}
.kl-celebration-message {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--bg-card, #fff);
    padding: 40px 60px;
    border-radius: 30px;
    text-align: center;
    box-shadow: 0 20px 60px rgba(0,0,0,0.2);
    z-index: 1001;
    animation: kl-celebratePop 0.6s ease;
    display: none;
    border: 1px solid var(--border-primary, #e2e8f0);
}
.kl-celebration-message.active {
    display: block;
}
@keyframes kl-celebratePop {
    0% { transform: translate(-50%, -50%) scale(0); }
    60% { transform: translate(-50%, -50%) scale(1.1); }
    100% { transform: translate(-50%, -50%) scale(1); }
}
.kl-celebration-message h2 {
    font-size: 2.5rem;
    font-weight: 800;
    color: #FF6B9D;
    margin-bottom: 15px;
}
.kl-celebration-message p {
    font-size: 1.2rem;
    color: var(--text-secondary, #64748b);
}
.kl-stars {
    font-size: 3rem;
    margin: 20px 0;
}

/* ── 鼓励提示 ── */
.kl-encouragement {
    position: fixed;
    top: 20%;
    left: 50%;
    transform: translateX(-50%);
    background: #FFE66D;
    padding: 15px 40px;
    border-radius: 50px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary, #2D3436);
    box-shadow: 0 8px 30px rgba(255, 230, 109, 0.4);
    z-index: 100;
    animation: kl-encouragePop 0.5s ease, kl-encourageFade 2s ease 1.5s forwards;
    display: none;
}
.kl-encouragement.active {
    display: block;
}
@keyframes kl-encouragePop {
    0% { transform: translateX(-50%) scale(0); }
    60% { transform: translateX(-50%) scale(1.1); }
    100% { transform: translateX(-50%) scale(1); }
}
@keyframes kl-encourageFade {
    0% { opacity: 1; transform: translateX(-50%) translateY(0); }
    100% { opacity: 0; transform: translateX(-50%) translateY(-50px); }
}

/* ── 工具类 ── */
.hidden { display: none !important; }

/* ── 响应式 - 平板 ── */
@media (max-width: 768px) {
    .kl-wrap {
        padding: 15px 0 40px;
    }
    .kl-start-screen {
        padding: 40px 15px;
    }
    .kl-start-screen h1,
    .kl-header h1 {
        font-size: 2.2rem;
    }
    .kl-start-screen p {
        font-size: 1rem;
    }
    .kl-mascot {
        font-size: 5rem;
    }
    .kl-start-btn {
        padding: 18px 60px;
        font-size: 1.5rem;
    }
    .kl-test-voice-btn {
        padding: 10px 35px;
        font-size: 1.1rem;
    }
    .kl-header {
        padding: 20px 0;
    }
    .kl-subtitle {
        font-size: 1rem;
    }
    .kl-progress-bar {
        height: 16px;
        border-width: 2px;
        margin: 15px auto;
    }
    .kl-card-container {
        min-height: 280px;
        margin: 15px 0;
    }
    .kl-character-card {
        width: 260px;
        height: 260px;
        border-radius: 25px;
        box-shadow: 
            0 8px 30px rgba(255, 107, 157, 0.2),
            0 0 0 6px #FFB8D0,
            0 0 0 10px #FFE66D;
    }
    .kl-character-display {
        font-size: 7rem;
    }
    .kl-pinyin-display {
        font-size: 1.3rem;
    }
    .kl-card-number {
        width: 45px;
        height: 45px;
        font-size: 1rem;
        top: -12px;
        right: -12px;
    }
    .kl-button-group {
        gap: 15px;
        margin: 20px 0;
    }
    .kl-btn {
        padding: 16px 40px;
        font-size: 1.2rem;
        border-radius: 45px;
    }
    .kl-stats {
        gap: 15px;
        margin: 15px 0;
    }
    .kl-stat-item {
        padding: 12px 20px;
        border-radius: 15px;
    }
    .kl-stat-number {
        font-size: 1.6rem;
    }
    .kl-stat-label {
        font-size: 0.8rem;
    }
    .kl-learned-section {
        margin-top: 30px;
        padding: 15px;
    }
    .kl-learned-grid {
        grid-template-columns: repeat(auto-fill, minmax(50px, 1fr));
        gap: 8px;
    }
    .kl-learned-char {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
        border-radius: 12px;
    }
    .kl-celebration-message {
        padding: 30px 40px;
        border-radius: 25px;
        width: 90%;
        max-width: 400px;
    }
    .kl-celebration-message h2 {
        font-size: 2rem;
    }
    .kl-celebration-message p {
        font-size: 1.1rem;
    }
    .kl-stars {
        font-size: 2.5rem;
    }
    .kl-continue-btn {
        padding: 12px 40px;
        font-size: 1.2rem;
    }
    .kl-encouragement {
        padding: 12px 30px;
        font-size: 1.2rem;
        width: 90%;
        text-align: center;
    }
}

/* ── 响应式 - 手机 ── */
@media (max-width: 480px) {
    .kl-wrap {
        padding: 10px 0 40px;
    }
    .kl-start-screen {
        padding: 30px 10px;
    }
    .kl-start-screen h1,
    .kl-header h1 {
        font-size: 1.8rem;
        text-shadow: 2px 2px 0px #FFE66D;
    }
    .kl-start-screen p {
        font-size: 1rem;
        margin-bottom: 20px;
    }
    .kl-mascot {
        font-size: 4rem;
        margin-bottom: 15px;
    }
    .kl-start-btn {
        padding: 15px 50px;
        font-size: 1.3rem;
        margin-top: 20px;
    }
    .kl-test-voice-btn {
        padding: 10px 30px;
        font-size: 1rem;
        margin-top: 12px;
    }
    .kl-voice-status {
        font-size: 0.9rem;
    }
    .kl-voice-indicator {
        padding: 6px 15px;
        font-size: 0.9rem;
        margin: 8px 0;
    }
    .kl-voice-wave {
        width: 3px;
        height: 12px;
    }
    .kl-header {
        padding: 15px 0;
    }
    .kl-subtitle {
        font-size: 0.9rem;
    }
    .kl-progress-bar {
        height: 16px;
        border-width: 2px;
        margin: 15px auto;
    }
    .kl-card-container {
        min-height: 220px;
        margin: 10px 0;
    }
    .kl-character-card {
        width: 200px;
        height: 200px;
        border-radius: 20px;
        box-shadow: 
            0 6px 20px rgba(255, 107, 157, 0.2),
            0 0 0 5px #FFB8D0,
            0 0 0 8px #FFE66D;
    }
    .kl-character-display {
        font-size: 5rem;
        margin-bottom: 5px;
    }
    .kl-pinyin-display {
        font-size: 1.1rem;
    }
    .kl-card-number {
        width: 38px;
        height: 38px;
        font-size: 0.9rem;
        top: -10px;
        right: -10px;
    }
    .kl-button-group {
        gap: 12px;
        margin: 15px 0;
        flex-direction: column;
        align-items: center;
    }
    .kl-btn {
        padding: 14px 0;
        font-size: 1.1rem;
        border-radius: 40px;
        width: 85%;
        max-width: 280px;
    }
    .kl-stats {
        gap: 10px;
        margin: 10px 0;
    }
    .kl-stat-item {
        padding: 10px 15px;
        border-radius: 12px;
        min-width: 80px;
    }
    .kl-stat-number {
        font-size: 1.4rem;
    }
    .kl-stat-label {
        font-size: 0.75rem;
    }
    .kl-learned-section {
        margin-top: 20px;
        padding: 12px;
        border-radius: 15px;
    }
    .kl-learned-section h3 {
        font-size: 1.2rem;
        margin-bottom: 10px;
    }
    .kl-learned-grid {
        grid-template-columns: repeat(auto-fill, minmax(45px, 1fr));
        gap: 6px;
    }
    .kl-learned-char {
        width: 45px;
        height: 45px;
        font-size: 1.3rem;
        border-radius: 10px;
    }
    .kl-celebration-message {
        padding: 25px 20px;
        border-radius: 20px;
        width: 92%;
    }
    .kl-celebration-message h2 {
        font-size: 1.6rem;
        margin-bottom: 10px;
    }
    .kl-celebration-message p {
        font-size: 1rem;
    }
    .kl-stars {
        font-size: 2rem;
        margin: 15px 0;
    }
    .kl-continue-btn {
        padding: 12px 35px;
        font-size: 1.1rem;
        margin-top: 15px;
    }
    .kl-encouragement {
        padding: 10px 20px;
        font-size: 1rem;
        border-radius: 40px;
        top: 15%;
    }
    .kl-floating-decoration {
        display: none;
    }
}

/* ── 响应式 - 小屏手机 ── */
@media (max-width: 360px) {
    .kl-start-screen h1,
    .kl-header h1 {
        font-size: 1.5rem;
    }
    .kl-character-card {
        width: 170px;
        height: 170px;
    }
    .kl-character-display {
        font-size: 4rem;
    }
    .kl-pinyin-display {
        font-size: 1rem;
    }
    .kl-btn {
        padding: 12px 0;
        font-size: 1rem;
    }
    .kl-stat-item {
        padding: 8px 12px;
        min-width: 70px;
    }
    .kl-stat-number {
        font-size: 1.2rem;
    }
    .kl-learned-char {
        width: 40px;
        height: 40px;
        font-size: 1.1rem;
    }
}

/* ── 暗色模式 ── */
html[data-theme="dark"] .kl-character-card {
    background: var(--bg-card, #1e293b);
    box-shadow: 
        0 10px 40px rgba(255, 107, 157, 0.15),
        0 0 0 8px rgba(255, 184, 208, 0.3),
        0 0 0 12px rgba(255, 230, 109, 0.3);
}
html[data-theme="dark"] .kl-character-display {
    color: var(--text-primary, #f1f5f9);
}
html[data-theme="dark"] .kl-stat-item,
html[data-theme="dark"] .kl-learned-section,
html[data-theme="dark"] .kl-celebration-message {
    background: var(--bg-card, #1e293b);
    border-color: var(--border-primary, #334155);
}
html[data-theme="dark"] .kl-celebration-message p {
    color: var(--text-secondary, #94a3b8);
}

/* ── 触摸设备优化 ── */
@media (hover: none) {
    .kl-mascot {
        animation: none;
    }
    .kl-floating-decoration {
        display: none;
    }
    .kl-btn:hover {
        transform: none;
        box-shadow: 0 6px 20px rgba(0, 184, 148, 0.3);
    }
    .kl-btn-dont-know:hover {
        box-shadow: 0 6px 20px rgba(255, 107, 157, 0.3);
    }
    .kl-start-btn:hover {
        transform: none;
        box-shadow: 0 10px 30px rgba(255, 107, 157, 0.3);
    }
}