/* ============================================================
   quiz.css - 水墨风格弹窗系统
   英雄介绍 / 答题挑战 / 无尽挑战 / 图鉴 / 成就 /
   头部按钮 / 进度条 / 浮动按钮 / 锁定卡片 /
   深色模式 / 响应式
   ============================================================ */

/* ============================
   0. 通用弹窗基础
   ============================ */

/* 全屏遮罩 - 通用样式 */
.quiz-intro-overlay,
.quiz-challenge-overlay,
.endless-overlay,
.collection-overlay,
.achievement-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0);
    z-index: 4000;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    transition: background 0.35s ease;
}

.quiz-intro-overlay.active,
.quiz-challenge-overlay.active,
.endless-overlay.active,
.collection-overlay.active,
.achievement-overlay.active {
    background: rgba(0, 0, 0, 0.6);
    pointer-events: auto;
}

/* 内层面板 - 水墨风通用样式 */
.quiz-intro-panel,
.quiz-challenge-panel,
.endless-panel,
.collection-panel,
.achievement-panel {
    position: relative;
    width: 100%;
    background: var(--paper-texture);
    border-radius: 16px;
    border: 2px solid rgba(139, 69, 19, 0.3);
    box-shadow: var(--ink-shadow), var(--ink-border);
    opacity: 0;
    transform: scale(0.85);
    transition: opacity 0.35s ease, transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* 面板内部水墨晕染层 */
.quiz-intro-panel::after,
.quiz-challenge-panel::after,
.endless-panel::after,
.collection-panel::after,
.achievement-panel::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--ink-gradient);
    pointer-events: none;
    border-radius: inherit;
    z-index: 0;
}

/* 不需要内部滚动的面板设置 overflow:hidden（圆角裁剪） */
.quiz-intro-panel,
.quiz-challenge-panel,
.endless-panel {
    overflow: hidden;
}

.quiz-intro-overlay.active .quiz-intro-panel,
.quiz-challenge-overlay.active .quiz-challenge-panel,
.endless-overlay.active .endless-panel,
.collection-overlay.active .collection-panel,
.achievement-overlay.active .achievement-panel {
    opacity: 1;
    transform: scale(1);
}

/* 顶部水墨笔触装饰条 */
.quiz-intro-panel::before,
.quiz-challenge-panel::before,
.endless-panel::before,
.collection-panel::before,
.achievement-panel::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: 
        linear-gradient(90deg, 
            transparent 0%, 
            var(--color-ink) 5%, 
            var(--color-ink) 15%,
            var(--color-gold-dark) 30%,
            var(--color-gold) 50%,
            var(--color-gold-dark) 70%,
            var(--color-ink) 85%,
            var(--color-ink) 95%,
            transparent 100%);
    z-index: 2;
    opacity: 0.7;
}

/* 通用关闭按钮 */
.panel-close-btn {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid rgba(139, 69, 19, 0.3);
    background: rgba(255, 255, 255, 0.7);
    color: var(--color-primary);
    font-size: 22px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.25s ease;
    z-index: 10;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
    backdrop-filter: blur(4px);
    line-height: 1;
}

.panel-close-btn:hover {
    background: rgba(139, 69, 19, 0.1);
    border-color: var(--color-primary);
    transform: scale(1.1);
}

/* ===== 印章装饰元素 - 水墨风 ===== */
.seal-decoration {
    position: absolute;
    width: 48px;
    height: 48px;
    border: 2px solid var(--seal-red);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-seal);
    font-size: 14px;
    color: var(--seal-red);
    transform: rotate(-8deg);
    opacity: 0.85;
    pointer-events: none;
    box-shadow: var(--seal-shadow);
    background: rgba(255, 253, 250, 0.9);
}

.seal-decoration::before {
    content: '';
    position: absolute;
    inset: 2px;
    border: 1px solid rgba(196, 30, 58, 0.3);
    border-radius: 2px;
}

/* 小型印章 */
.seal-decoration.sm {
    width: 36px;
    height: 36px;
    font-size: 11px;
}

/* 大型印章 */
.seal-decoration.lg {
    width: 60px;
    height: 60px;
    font-size: 18px;
}

/* ============================
   1. 英雄介绍面板 .quiz-intro
   ============================ */

.quiz-intro-overlay {
    z-index: 4000;
    padding: 20px;
}

.quiz-intro-panel {
    max-width: 480px;
    text-align: center;
}

/* 剪影图片区 */
.quiz-intro-portrait {
    width: 100%;
    max-width: 200px;
    height: 240px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.quiz-intro-portrait .quiz-intro-img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.3));
}

/* 信息区 */
.quiz-intro-info {
    padding: 0 28px 8px;
}

.quiz-intro-info .quiz-intro-star-name {
    font-family: var(--font-brush);
    font-size: 22px;
    color: var(--color-ink);
    letter-spacing: 4px;
    margin-bottom: 8px;
    text-shadow: 1px 1px 2px rgba(139, 69, 19, 0.1);
}

.quiz-intro-info .quiz-intro-stars {
    font-size: 22px;
    color: var(--color-gold);
    letter-spacing: 6px;
    margin-bottom: 16px;
    text-shadow: 0 0 8px rgba(218, 165, 32, 0.3);
}

.quiz-intro-info .quiz-intro-teaser {
    font-family: var(--font-body);
    font-size: 16px;
    color: var(--color-ink-light);
    line-height: 1.8;
    font-style: italic;
    padding: 16px 20px;
    background: 
        linear-gradient(135deg, 
            rgba(47, 79, 79, 0.02) 0%, 
            rgba(139, 69, 19, 0.04) 50%,
            rgba(47, 79, 79, 0.02) 100%);
    border-radius: 8px;
    border: 1px solid rgba(47, 79, 79, 0.1);
    margin-bottom: 24px;
}

/* 答题挑战按钮 - 水墨书法风格 */
.quiz-intro-start-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 280px;
    min-height: 52px;
    padding: 14px 32px;
    border: 2px solid var(--color-ink);
    border-radius: 8px;
    background: 
        linear-gradient(135deg, 
            rgba(47, 79, 79, 0.9) 0%, 
            rgba(26, 26, 26, 0.95) 100%);
    color: var(--color-paper-light);
    font-family: var(--font-brush);
    font-size: 20px;
    letter-spacing: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
    box-shadow: 
        0 4px 16px rgba(47, 79, 79, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    position: relative;
    overflow: hidden;
    margin-top: 8px;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

/* 按钮水墨晕染效果 */
.quiz-intro-start-btn::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(ellipse at center, 
        rgba(218, 165, 32, 0.1) 0%, 
        transparent 70%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.quiz-intro-start-btn:hover {
    transform: translateY(-2px);
    box-shadow: 
        0 6px 20px rgba(47, 79, 79, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.15);
    border-color: var(--color-gold-dark);
}

.quiz-intro-start-btn:hover::before {
    opacity: 1;
}

/* 介绍面板关闭按钮 */
.quiz-intro-close-btn {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid rgba(139, 69, 19, 0.3);
    background: rgba(255, 255, 255, 0.7);
    color: var(--color-primary);
    font-size: 22px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.25s ease;
    z-index: 10;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
    backdrop-filter: blur(4px);
    line-height: 1;
}

.quiz-intro-close-btn:hover {
    background: rgba(139, 69, 19, 0.1);
    border-color: var(--color-primary);
    transform: scale(1.1);
}

.quiz-intro-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 180px;
    min-height: 48px;
    padding: 12px 40px;
    border: 2px solid var(--color-primary);
    border-radius: 25px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-paper-light);
    font-family: var(--font-title);
    font-size: 20px;
    letter-spacing: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
    box-shadow: 0 4px 16px rgba(139, 69, 19, 0.3);
    position: relative;
    overflow: hidden;
}

.quiz-intro-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
    transition: left 0.5s ease;
}

.quiz-intro-btn:hover::before {
    left: 100%;
}

.quiz-intro-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(139, 69, 19, 0.4);
}

.quiz-intro-btn:active {
    transform: translateY(0) scale(0.97);
}

/* ============================
   2. 答题挑战面板 .quiz-challenge
   ============================ */

.quiz-challenge-overlay {
    z-index: 4100;
    padding: 20px;
}

.quiz-challenge-panel {
    max-width: 600px;
}

/* 退出按钮 - 右上角 */
.quiz-challenge-exit-btn {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid rgba(139, 69, 19, 0.3);
    background: rgba(255, 255, 255, 0.7);
    color: var(--color-primary);
    font-size: 22px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.25s ease;
    z-index: 10;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
    backdrop-filter: blur(4px);
    line-height: 1;
    padding: 0;
}

.quiz-challenge-exit-btn:hover {
    background: rgba(139, 69, 19, 0.1);
    border-color: var(--color-primary);
    transform: scale(1.1);
}

/* 进度区 - 水墨风格 */
.quiz-challenge-progress {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 28px 12px;
    font-family: var(--font-body);
    font-size: 14px;
    color: var(--color-ink-light);
    letter-spacing: 1px;
}

.quiz-challenge-progress .progress-label {
    font-family: var(--font-brush);
    font-weight: 600;
    color: var(--color-ink);
}

.quiz-challenge-progress .star-display {
    color: var(--color-gold);
    font-size: 18px;
    letter-spacing: 3px;
    text-shadow: 0 0 6px rgba(218, 165, 32, 0.3);
}

/* 答题面板星级 - 居中显示 */
.quiz-challenge-stars {
    text-align: center;
    font-size: 18px;
    color: var(--color-gold);
    letter-spacing: 4px;
    padding: 4px 0 8px;
}

/* 题目文字 */
.quiz-challenge-question {
    font-family: var(--font-body);
    font-size: 20px;
    color: var(--color-text);
    line-height: 1.8;
    margin: 8px 28px 24px;
    padding: 16px 20px;
    background: rgba(139, 69, 19, 0.04);
    border-radius: 10px;
    border: 1px solid rgba(139, 69, 19, 0.1);
    text-align: center;
}

/* 答题拼音标注 */
.quiz-pinyin {
    ruby-position: over;
}

.quiz-pinyin rt {
    font-size: 11px;
    color: var(--color-text-light);
    font-family: 'Noto Sans', sans-serif;
    line-height: 1.2;
}

/* 选项容器 */
.quiz-challenge-options {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 0 28px 24px;
}

/* 选项按钮 - 水墨风格 */
.quiz-challenge-option-btn {
    display: flex;
    align-items: center;
    gap: 14px;
    width: 100%;
    min-height: 50px;
    padding: 12px 18px;
    border: 1px solid rgba(47, 79, 79, 0.15);
    border-radius: 8px;
    background: 
        linear-gradient(135deg, 
            rgba(255, 255, 255, 0.7) 0%, 
            rgba(250, 248, 240, 0.8) 100%);
    color: var(--color-ink);
    font-family: var(--font-body);
    font-size: 17px;
    cursor: pointer;
    transition: all 0.25s ease;
    text-align: left;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
    box-shadow: 0 2px 8px rgba(47, 79, 79, 0.06);
}

.quiz-challenge-option-btn:hover {
    background: 
        linear-gradient(135deg, 
            rgba(250, 248, 240, 0.9) 0%, 
            rgba(245, 240, 224, 0.95) 100%);
    border-color: var(--color-ink);
    transform: translateX(4px);
    box-shadow: 
        0 4px 12px rgba(47, 79, 79, 0.1),
        inset 0 0 20px rgba(139, 69, 19, 0.03);
}

.quiz-challenge-option-btn:active {
    transform: translateX(2px) scale(0.98);
}

/* 选项序号 A/B/C/D - 印章风格 */
.quiz-option-label {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 4px;
    background: var(--color-ink);
    color: var(--color-paper-light);
    font-family: var(--font-seal);
    font-size: 16px;
    font-weight: 600;
    flex-shrink: 0;
    transition: all 0.25s ease;
    box-shadow: 0 2px 4px rgba(47, 79, 79, 0.2);
}

/* 选项文字 */
.quiz-option-text {
    font-family: var(--font-body);
    font-size: 17px;
    color: var(--color-text);
}

/* 正确选项 */
.quiz-challenge-option-btn.correct {
    border-color: #2e7d32;
    background: rgba(46, 125, 50, 0.08);
    pointer-events: none;
}

.quiz-challenge-option-btn.correct .quiz-option-label {
    background: #2e7d32;
}

/* 错误选项 */
.quiz-challenge-option-btn.wrong {
    border-color: #c62828;
    background: rgba(198, 40, 40, 0.08);
    pointer-events: none;
}

.quiz-challenge-option-btn.wrong .quiz-option-label {
    background: #c62828;
}

/* 选项禁用状态 */
.quiz-challenge-option-btn.disabled {
    pointer-events: none;
    opacity: 0.5;
}

/* 结果区 */
.quiz-challenge-result {
    margin: 0 28px 24px;
    padding: 20px;
    border-radius: 12px;
    text-align: center;
    animation: quizResultFadeIn 0.4s ease;
}

.quiz-challenge-result.success {
    background: linear-gradient(135deg, rgba(218, 165, 32, 0.1) 0%, rgba(218, 165, 32, 0.05) 100%);
    border: 1px solid rgba(218, 165, 32, 0.3);
}

/* 解锁成功动画（两阶段 - 阶段1：答题面板内） */
.quiz-challenge-result.unlock-success {
    animation: unlockSuccessPulse 0.6s ease-out;
}

.unlock-success-title {
    font-family: var(--font-title);
    font-size: 26px;
    letter-spacing: 4px;
    color: var(--color-gold-dark);
    margin-bottom: 8px;
    animation: unlockTitleBounce 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.unlock-success-name {
    font-family: var(--font-title);
    font-size: 32px;
    letter-spacing: 6px;
    color: var(--color-primary);
    animation: unlockNameReveal 1s ease-out 0.3s both;
}

@keyframes unlockSuccessPulse {
    0% { transform: scale(0.8); opacity: 0; }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); opacity: 1; }
}

@keyframes unlockTitleBounce {
    0% { transform: scale(0.3) translateY(20px); opacity: 0; }
    60% { transform: scale(1.1) translateY(-5px); opacity: 1; }
    100% { transform: scale(1) translateY(0); }
}

@keyframes unlockNameReveal {
    0% { transform: translateY(15px); opacity: 0; filter: blur(8px); }
    100% { transform: translateY(0); opacity: 1; filter: blur(0); }
}

.quiz-challenge-result.failure {
    background: linear-gradient(135deg, rgba(139, 0, 0, 0.08) 0%, rgba(139, 0, 0, 0.03) 100%);
    border: 1px solid rgba(139, 0, 0, 0.2);
}

/* 正确答案提示 */
.correct-answer-hint {
    display: inline-block;
    margin-top: 8px;
    padding: 6px 12px;
    background: rgba(46, 125, 50, 0.1);
    border-radius: 6px;
    font-family: var(--font-body);
    font-size: 15px;
    color: #2e7d32;
}

/* 重试按钮 */
.quiz-retry-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 140px;
    min-height: 42px;
    padding: 10px 28px;
    margin-top: 14px;
    border: 2px solid var(--color-primary);
    border-radius: 21px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-paper-light);
    font-family: var(--font-title);
    font-size: 16px;
    letter-spacing: 3px;
    cursor: pointer;
    transition: all 0.3s ease;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
    box-shadow: 0 3px 12px rgba(139, 69, 19, 0.25);
}

.quiz-retry-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 16px rgba(139, 69, 19, 0.35);
}

.quiz-retry-btn:active {
    transform: translateY(0) scale(0.97);
}

.quiz-challenge-result .result-title {
    font-family: var(--font-title);
    font-size: 22px;
    letter-spacing: 3px;
    margin-bottom: 8px;
}

.quiz-challenge-result.success .result-title {
    color: var(--color-gold-dark);
}

.quiz-challenge-result.failure .result-title {
    color: var(--color-red);
}

.quiz-challenge-result .result-hero-name {
    font-family: var(--font-title);
    font-size: 28px;
    color: var(--color-primary);
    letter-spacing: 4px;
    margin-top: 4px;
}

.quiz-challenge-result .result-answer {
    font-family: var(--font-body);
    font-size: 15px;
    color: var(--color-text-light);
    margin-top: 8px;
    line-height: 1.6;
}

/* 重试按钮 */
.quiz-challenge-retry {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 120px;
    min-height: 44px;
    padding: 10px 32px;
    border: 2px solid var(--color-primary);
    border-radius: 25px;
    background: var(--color-primary);
    color: var(--color-paper-light);
    font-family: var(--font-body);
    font-size: 16px;
    letter-spacing: 3px;
    cursor: pointer;
    transition: all 0.25s ease;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
}

.quiz-challenge-retry:hover {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    box-shadow: 0 4px 12px rgba(139, 69, 19, 0.3);
}

.quiz-challenge-retry:active {
    transform: scale(0.96);
}

/* 粒子效果 */
.quiz-particle {
    position: fixed;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    pointer-events: none;
    z-index: 9999;
    animation: particleFade 1.5s ease-out forwards;
}

@keyframes particleFade {
    0% {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
    100% {
        opacity: 0;
        transform: scale(0) translateY(-60px);
    }
}

@keyframes quizResultFadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================
   3. 无尽挑战面板 .endless
   ============================ */

.endless-overlay {
    z-index: 4200;
    padding: 20px;
}

.endless-panel {
    max-width: 520px;
}

/* 挑战模式锁定提示 toast */
.endless-locked-toast {
    position: fixed;
    top: 80px;
    left: 50%;
    transform: translateX(-50%) translateY(-20px);
    padding: 14px 28px;
    background: rgba(139, 69, 19, 0.92);
    color: var(--color-paper-light);
    font-family: var(--font-body);
    font-size: 15px;
    border-radius: 10px;
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.25);
    z-index: 9999;
    opacity: 0;
    transition: opacity 0.35s ease, transform 0.35s ease;
    pointer-events: none;
    white-space: nowrap;
    backdrop-filter: blur(8px);
}

.endless-locked-toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* 分数区 */
.endless-score {
    text-align: center;
    padding: 24px 28px 8px;
}

.endless-score .score-label {
    font-family: var(--font-body);
    font-size: 14px;
    color: var(--color-text-light);
    letter-spacing: 2px;
}

.endless-score .score-value {
    font-family: var(--font-title);
    font-size: 48px;
    color: var(--color-gold-dark);
    letter-spacing: 4px;
    line-height: 1.2;
}

/* 连胜区 */
.endless-streak {
    text-align: center;
    padding: 4px 28px 8px;
}

.endless-streak .streak-label {
    font-family: var(--font-body);
    font-size: 13px;
    color: var(--color-text-light);
    letter-spacing: 1px;
}

.endless-streak .streak-value {
    font-family: var(--font-title);
    font-size: 24px;
    color: var(--color-red);
    letter-spacing: 2px;
}

/* 最高分区 */
.endless-highscore {
    text-align: center;
    padding: 4px 28px 16px;
    font-family: var(--font-body);
    font-size: 13px;
    color: var(--color-text-light);
    letter-spacing: 1px;
    border-bottom: 1px solid rgba(139, 69, 19, 0.1);
}

.endless-highscore .highscore-value {
    color: var(--color-gold);
    font-weight: 600;
}

/* 题目 */
.endless-question {
    font-family: var(--font-body);
    font-size: 20px;
    color: var(--color-text);
    line-height: 1.8;
    margin: 16px 28px 20px;
    padding: 16px 20px;
    background: rgba(139, 69, 19, 0.04);
    border-radius: 10px;
    border: 1px solid rgba(139, 69, 19, 0.1);
    text-align: center;
}

/* 选项 */
.endless-options {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 0 28px 24px;
}

/* 复用选项按钮样式 */
.endless-options .quiz-option-btn {
    /* 继承 .quiz-option-btn 样式 */
}

/* 结果区 */
.endless-result {
    margin: 0 28px 20px;
    padding: 16px;
    border-radius: 12px;
    text-align: center;
    animation: quizResultFadeIn 0.4s ease;
}

.endless-result.success {
    background: linear-gradient(135deg, rgba(46, 125, 50, 0.08) 0%, rgba(46, 125, 50, 0.03) 100%);
    border: 1px solid rgba(46, 125, 50, 0.2);
}

.endless-result.failure {
    background: linear-gradient(135deg, rgba(198, 40, 40, 0.08) 0%, rgba(198, 40, 40, 0.03) 100%);
    border: 1px solid rgba(198, 40, 40, 0.2);
}

.endless-result .result-text {
    font-family: var(--font-title);
    font-size: 20px;
    letter-spacing: 3px;
}

.endless-result.success .result-text {
    color: #2e7d32;
}

.endless-result.failure .result-text {
    color: #c62828;
}

/* 重试按钮 */
.endless-retry {
    display: block;
    width: calc(100% - 56px);
    margin: 0 28px 28px;
    min-height: 48px;
    border: 2px solid var(--color-primary);
    border-radius: 25px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-paper-light);
    font-family: var(--font-title);
    font-size: 18px;
    letter-spacing: 4px;
    cursor: pointer;
    transition: all 0.25s ease;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
}

.endless-retry:hover {
    box-shadow: 0 4px 16px rgba(139, 69, 19, 0.35);
    transform: translateY(-1px);
}

.endless-retry:active {
    transform: scale(0.97);
}

/* ============================
   4. 图鉴面板 .collection
   ============================ */

.collection-overlay {
    z-index: 3500;
    padding: 20px;
}

.collection-panel {
    max-width: 900px;
    width: 94vw;
    height: 88vh;
    max-height: 88vh;
    display: flex;
    flex-direction: column;
}

/* 头部 */
.collection-header {
    padding: 16px 60px 12px 24px;
    text-align: center;
    flex-shrink: 0;
    border-bottom: 1px solid rgba(139, 69, 19, 0.12);
    background: linear-gradient(180deg, rgba(139, 69, 19, 0.04) 0%, transparent 100%);
    position: relative;
}

.collection-header .collection-title {
    font-family: var(--font-brush);
    font-size: 30px;
    color: var(--color-ink);
    letter-spacing: 8px;
    margin-bottom: 12px;
    text-shadow: 2px 2px 4px rgba(139, 69, 19, 0.1);
}

/* 图鉴进度条 - 水墨风格 */
.collection-progress {
    font-family: var(--font-body);
    font-size: 14px;
    color: var(--color-ink-light);
    letter-spacing: 2px;
    padding: 6px 16px;
    background: 
        linear-gradient(135deg, 
            rgba(47, 79, 79, 0.04) 0%, 
            rgba(139, 69, 19, 0.06) 50%,
            rgba(47, 79, 79, 0.04) 100%);
    border-radius: 20px;
    border: 1px solid rgba(47, 79, 79, 0.1);
    display: inline-block;
    margin-top: 4px;
}

.collection-progress::before {
    content: '📜 ';
    opacity: 0.6;
}

/* 图鉴关闭按钮 - 右上方 */
.collection-close-btn {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 2px solid rgba(139, 69, 19, 0.3);
    background: rgba(255, 255, 255, 0.85);
    color: var(--color-primary);
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.25s ease;
    z-index: 20;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
    backdrop-filter: blur(4px);
    line-height: 1;
}

.collection-close-btn:hover {
    background: rgba(139, 69, 19, 0.1);
    border-color: var(--color-primary);
    transform: scale(1.1);
}

/* Tab 切换 */
.collection-tabs {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 8px;
    flex-shrink: 0;
}

.collection-tab {
    font-family: var(--font-body);
    font-size: 14px;
    padding: 8px 24px;
    border: 2px solid rgba(139, 69, 19, 0.2);
    border-radius: 25px;
    background: transparent;
    color: var(--color-primary);
    cursor: pointer;
    transition: all 0.25s ease;
    letter-spacing: 2px;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
    min-height: 44px;
    display: flex;
    align-items: center;
}

.collection-tab:hover {
    background: rgba(139, 69, 19, 0.06);
    border-color: var(--color-primary-light);
}

.collection-tab.active {
    background: var(--color-primary);
    color: var(--color-paper-light);
    border-color: var(--color-primary);
    box-shadow: 0 3px 10px rgba(139, 69, 19, 0.25);
}

/* 图鉴内容区域 */
.collection-body {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 12px 16px;
    min-height: 0;
    -webkit-overflow-scrolling: touch;
}

/* 自定义滚动条 */
.collection-body::-webkit-scrollbar {
    width: 6px;
}

.collection-body::-webkit-scrollbar-track {
    background: rgba(139, 69, 19, 0.04);
}

.collection-body::-webkit-scrollbar-thumb {
    background: rgba(139, 69, 19, 0.2);
    border-radius: 3px;
}

.collection-body::-webkit-scrollbar-thumb:hover {
    background: rgba(139, 69, 19, 0.35);
}

/* 英雄网格 */
.collection-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 12px;
    justify-items: center;
}

/* 英雄项 */
.collection-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    width: 100%;
    max-width: 120px;
    cursor: pointer;
    transition: transform 0.2s ease;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
}

.collection-item:hover {
    transform: translateY(-3px);
}

/* 头像 */
.collection-item img {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
    object-position: center top;
    border: 3px solid var(--color-gold);
    box-shadow: 0 3px 10px rgba(139, 69, 19, 0.15);
    transition: all 0.25s ease;
    background: var(--color-paper-dark);
}

/* 名字 */
.collection-item-name {
    font-family: var(--font-title);
    font-size: 14px;
    color: var(--color-primary);
    letter-spacing: 2px;
    text-align: center;
    line-height: 1.3;
}

/* 已解锁 */
.collection-item.unlocked img {
    border-color: var(--color-gold);
}

.collection-item.unlocked .collection-item-name {
    color: var(--color-primary);
}

/* 未解锁 */
.collection-item.locked img {
    border-color: #bbb;
    background: #e0e0e0;
    filter: grayscale(1);
}

.collection-item.locked .collection-item-name {
    color: #999;
    font-family: var(--font-body);
}

/* ============================
   5. 成就面板 .achievement
   ============================ */

.achievement-overlay {
    z-index: 4500;
    padding: 20px;
}

.achievement-panel {
    max-width: 700px;
    width: 95vw;
    height: 85vh;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
}

/* 头部 */
.achievement-header {
    padding: 20px 60px 16px 24px;
    text-align: center;
    flex-shrink: 0;
    border-bottom: 1px solid rgba(139, 69, 19, 0.12);
    background: linear-gradient(180deg, rgba(139, 69, 19, 0.04) 0%, transparent 100%);
    position: relative;
}

.achievement-header .achievement-title {
    font-family: var(--font-brush);
    font-size: 30px;
    color: var(--color-ink);
    letter-spacing: 8px;
    text-shadow: 2px 2px 4px rgba(139, 69, 19, 0.1);
}

.achievement-header .achievement-summary {
    margin-top: 8px;
    font-family: var(--font-body);
    font-size: 14px;
    color: var(--color-ink-light);
    letter-spacing: 2px;
    padding: 6px 16px;
    background: 
        linear-gradient(135deg, 
            rgba(47, 79, 79, 0.04) 0%, 
            rgba(139, 69, 19, 0.06) 50%,
            rgba(47, 79, 79, 0.04) 100%);
    border-radius: 20px;
    border: 1px solid rgba(47, 79, 79, 0.1);
    display: inline-block;
}

/* 成就关闭按钮 - 右上方 */
.achievement-close-btn {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 2px solid rgba(139, 69, 19, 0.3);
    background: rgba(255, 255, 255, 0.85);
    color: var(--color-primary);
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.25s ease;
    z-index: 20;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
    backdrop-filter: blur(4px);
    line-height: 1;
}

.achievement-close-btn:hover {
    background: rgba(139, 69, 19, 0.1);
    border-color: var(--color-primary);
    transform: scale(1.1);
}

/* 成就内容区域 */
.achievement-body {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    min-height: 0;
}

/* 自定义滚动条 */
.achievement-body::-webkit-scrollbar {
    width: 6px;
}

.achievement-body::-webkit-scrollbar-track {
    background: rgba(139, 69, 19, 0.04);
}

.achievement-body::-webkit-scrollbar-thumb {
    background: rgba(139, 69, 19, 0.2);
    border-radius: 3px;
}

/* 成就列表 */
.achievement-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

/* 成就项 */
.achievement-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 20px 12px;
    border-radius: 12px;
    border: 2px solid rgba(139, 69, 19, 0.12);
    background: rgba(255, 255, 255, 0.5);
    text-align: center;
    transition: all 0.25s ease;
}

.achievement-item:hover {
    border-color: rgba(139, 69, 19, 0.25);
    box-shadow: 0 4px 12px rgba(139, 69, 19, 0.1);
    transform: translateY(-2px);
}

/* 成就图标 */
.achievement-item-icon {
    font-size: 40px;
    line-height: 1;
}

/* 成就名称 */
.achievement-item-name {
    font-family: var(--font-title);
    font-size: 16px;
    color: var(--color-primary);
    letter-spacing: 2px;
}

/* 成就描述 */
.achievement-item-desc {
    font-family: var(--font-body);
    font-size: 13px;
    color: var(--color-text-light);
    line-height: 1.5;
}

/* 已达成 */
.achievement-item.earned {
    border-color: rgba(218, 165, 32, 0.3);
    background: linear-gradient(135deg, rgba(218, 165, 32, 0.06) 0%, rgba(255, 255, 255, 0.5) 100%);
}

.achievement-item.earned .achievement-item-name {
    color: var(--color-gold-dark);
}

/* 未达成 */
.achievement-item.locked {
    opacity: 0.5;
    filter: grayscale(0.6);
}

.achievement-item.locked .achievement-item-icon {
    filter: grayscale(1);
}

.achievement-item.locked .achievement-item-name {
    color: #999;
}

.achievement-item.locked .achievement-item-desc {
    color: #bbb;
}

/* 成就通知 */
.achievement-toast {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%) translateY(-120px);
    z-index: 5000;
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 28px;
    background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-dark) 100%);
    border-radius: 12px;
    box-shadow:
        0 8px 30px rgba(218, 165, 32, 0.4),
        0 2px 8px rgba(0, 0, 0, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
    border: 2px solid var(--color-gold-light);
    white-space: nowrap;
    transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
    pointer-events: none;
}

.achievement-toast.show {
    transform: translateX(-50%) translateY(0);
}

.achievement-toast.hide {
    transform: translateX(-50%) translateY(-120px);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 通知图标 */
.achievement-toast .toast-icon {
    font-size: 28px;
    flex-shrink: 0;
}

/* 通知文字 */
.achievement-toast .toast-content {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.achievement-toast .toast-label {
    font-family: var(--font-body);
    font-size: 12px;
    color: rgba(47, 79, 79, 0.7);
    letter-spacing: 2px;
}

.achievement-toast .toast-name {
    font-family: var(--font-title);
    font-size: 18px;
    color: var(--color-text);
    letter-spacing: 2px;
    text-shadow: 0 1px 0 rgba(255, 255, 255, 0.3);
}

/* ============================
   6. 头部按钮 .header-actions
   ============================ */

.header-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 8px;
}

.action-btn {
    font-family: var(--font-body);
    font-size: 13px;
    padding: 5px 14px;
    border: 1px solid rgba(139, 69, 19, 0.2);
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.5);
    color: var(--color-text-light);
    cursor: pointer;
    transition: all 0.2s ease;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
    min-height: 44px;
    display: flex;
    align-items: center;
    gap: 4px;
}

.action-btn:hover {
    background: rgba(255, 255, 255, 0.8);
    border-color: var(--color-primary-light);
    color: var(--color-text);
}

.action-btn:active {
    transform: scale(0.96);
}

/* ============================
   7. 进度条 .progress-bar
   ============================ */

.progress-bar {
    flex: 1;
    height: 16px;
    background: 
        linear-gradient(180deg, 
            rgba(47, 79, 79, 0.08) 0%, 
            rgba(47, 79, 79, 0.04) 50%,
            rgba(47, 79, 79, 0.08) 100%);
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid rgba(47, 79, 79, 0.2);
    position: relative;
    margin-top: 16px;
    margin-bottom: 8px;
    box-shadow: 
        inset 0 1px 3px rgba(0, 0, 0, 0.1),
        0 1px 2px rgba(255, 255, 255, 0.5);
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg,
        var(--color-ink) 0%,
        var(--color-ink-light) 20%,
        var(--color-gold-dark) 50%,
        var(--color-gold) 80%,
        var(--color-gold-light) 100%);
    border-radius: 8px;
    transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    box-shadow: 0 0 10px rgba(218, 165, 32, 0.3);
}

/* 金色光泽效果 */
.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 50%;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.4), transparent);
    border-radius: 8px 8px 0 0;
}

/* 光泽扫过动画 */
.progress-fill::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: progressShine 2.5s ease-in-out infinite;
}

@keyframes progressShine {
    0% {
        left: -100%;
    }
    50% {
        left: 100%;
    }
    100% {
        left: 100%;
    }
}

.progress-text {
    font-family: var(--font-brush);
    font-size: 13px;
    color: var(--color-ink);
    white-space: nowrap;
    font-weight: 600;
    letter-spacing: 2px;
    min-width: 60px;
    text-align: right;
    text-shadow: 0 1px 2px rgba(255, 255, 255, 0.8);
}

/* ============================
   8. 浮动按钮容器 .floating-btn-container
   ============================ */

.floating-btn-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 3000;
}

.pinyin-toggle,
.dark-mode-toggle {
    font-family: var(--font-body);
    font-size: 13px;
    padding: 6px 14px;
    border: 1px solid rgba(139, 69, 19, 0.3);
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.4);
    color: var(--color-primary);
    cursor: pointer;
    transition: all 0.3s ease;
    letter-spacing: 1px;
    min-height: 44px;
    display: flex;
    align-items: center;
    gap: 6px;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
    white-space: nowrap;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.pinyin-toggle:hover,
.dark-mode-toggle:hover {
    background: rgba(139, 69, 19, 0.1);
    border-color: var(--color-primary);
}

.pinyin-toggle.active {
    background: linear-gradient(135deg, #2e7d32 0%, #4caf50 100%);
    color: #fff;
    border-color: #2e7d32;
}

/* ============================
   9. 锁定卡片 .hero-card.locked
   ============================ */

.hero-card.locked {
    position: relative;
    cursor: pointer;
}

/* 不使用蒙层和锁图标，直接显示模板图片 */
.hero-card.locked::before,
.hero-card.locked::after {
    display: none;
}

/* 锁定卡片正面 */
.locked-front {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
    border-radius: var(--border-radius);
}

.locked-front .card-image-container {
    width: 100%;
    height: 100%;
}

/* 锁定图片 - 填充整个卡片 */
.locked-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center center;
    filter: grayscale(0.3);
}

/* 锁定文字 - 位于图片上半部分留白处，横向上下结构，书法水墨风格（优化 iOS） */
.locked-text {
    position: absolute;
    top: 10%;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    font-family: 'KaiTi', 'STKaiti', 'BiauKai', 'Xingkai SC', 'Hiragino Sans GB', 'PingFang SC', serif;
    text-align: center;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.locked-text-top {
    font-size: 26px;
    letter-spacing: 6px;
    font-weight: 600;
    color: #1a1a1a;
    text-shadow: 
        1px 1px 2px rgba(255,255,255,0.9),
        2px 2px 4px rgba(255,255,255,0.6),
        0 0 15px rgba(0,0,0,0.08);
    -webkit-text-stroke: 0.3px rgba(139, 69, 19, 0.2);
}

.locked-text-bottom {
    font-size: 20px;
    letter-spacing: 4px;
    color: #4a3728;
    text-shadow: 
        1px 1px 2px rgba(255,255,255,0.95),
        1px 1px 4px rgba(255,255,255,0.7),
        0 0 10px rgba(0,0,0,0.05);
}

/* 锁定卡片悬停效果 */
.hero-card.locked:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(139, 69, 19, 0.2);
}

.hero-card.locked:hover .locked-front {
    border-color: rgba(139, 69, 19, 0.3);
}

/* ============================
   10. 深色模式 body.dark-mode
   ============================ */

body.dark-mode {
    --color-paper: #1a1a2e;
    --color-paper-dark: #16213e;
    --color-paper-light: #222244;
    --color-text: #d4d4d4;
    --color-text-light: #a0a0a0;
    --color-ink: #c8c8c8;
    --color-ink-light: #b0b0b0;
    --color-border: #6B3410;
    --color-shadow: rgba(0, 0, 0, 0.4);
    --color-primary-light: #c0784a;
    --color-gold: #e8b830;
    --color-gold-light: #ffe066;
    background: #1a1a2e;
    color: #d4d4d4;
}

/* 深色模式 - 宣纸纹理覆盖 */
body.dark-mode::before {
    background:
        linear-gradient(135deg, rgba(26, 26, 46, 0.9) 0%, rgba(22, 33, 62, 0.9) 50%, rgba(34, 34, 68, 0.9) 100%);
}

body.dark-mode::after {
    background:
        radial-gradient(ellipse at 10% 20%, rgba(218, 165, 32, 0.03) 0%, transparent 50%),
        radial-gradient(ellipse at 90% 80%, rgba(218, 165, 32, 0.03) 0%, transparent 50%);
}

/* 深色模式 - 头部 */
body.dark-mode .app-header {
    background: linear-gradient(180deg, rgba(218, 165, 32, 0.06) 0%, transparent 100%);
    border-bottom-color: rgba(218, 165, 32, 0.15);
}

body.dark-mode .app-header::before,
body.dark-mode .app-header::after {
    background: #1a1a2e;
}

body.dark-mode .app-title {
    color: var(--color-gold);
    text-shadow:
        2px 2px 0 rgba(0, 0, 0, 0.3),
        -1px -1px 0 rgba(218, 165, 32, 0.1);
}

body.dark-mode .app-title::before,
body.dark-mode .app-title::after {
    color: var(--color-gold-light);
}

/* 深色模式 - 筛选按钮 */
body.dark-mode .filter-btn {
    border-color: rgba(218, 165, 32, 0.4);
    color: var(--color-gold);
}

body.dark-mode .filter-btn:hover {
    background: rgba(218, 165, 32, 0.1);
    border-color: var(--color-gold);
}

body.dark-mode .filter-btn.active {
    background: var(--color-gold-dark);
    color: #1a1a2e;
    border-color: var(--color-gold-dark);
}

/* 深色模式 - 排序按钮 */
body.dark-mode .sort-btn {
    border-color: rgba(218, 165, 32, 0.2);
    background: rgba(255, 255, 255, 0.05);
    color: var(--color-text-light);
}

body.dark-mode .sort-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--color-gold);
    color: var(--color-text);
}

body.dark-mode .sort-btn.active {
    background: var(--color-gold-dark);
    color: #1a1a2e;
    border-color: var(--color-gold-dark);
}

/* 深色模式 - 工具按钮 */
body.dark-mode .tool-btn {
    border-color: rgba(218, 165, 32, 0.3);
    background: rgba(255, 255, 255, 0.05);
    color: var(--color-gold);
}

body.dark-mode .tool-btn:hover {
    background: rgba(218, 165, 32, 0.1);
    border-color: var(--color-gold);
}

body.dark-mode .tool-btn.active {
    background: var(--color-gold-dark);
    color: #1a1a2e;
}

/* 深色模式 - 卡片 */
body.dark-mode .card-front {
    background: #222244;
}

body.dark-mode .card-back {
    background: linear-gradient(180deg, #222244 0%, #1e1e3a 100%);
}

body.dark-mode .card-front::before,
body.dark-mode .card-back::before {
    border-color: rgba(218, 165, 32, 0.15);
}

body.dark-mode .hero-card:hover {
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
}

body.dark-mode .story-text {
    color: #c0c0c0;
}

body.dark-mode .ending-text {
    color: #a0a0a0;
}

body.dark-mode .info-item {
    color: #c0c0c0;
}

body.dark-mode .story-section h4 {
    color: var(--color-gold);
    border-bottom-color: rgba(218, 165, 32, 0.15);
}

body.dark-mode .ending-section {
    background: rgba(139, 0, 0, 0.08);
    border-left-color: var(--color-red-light);
}

body.dark-mode .ending-section h4 {
    color: var(--color-red-light);
}

/* 深色模式 - 弹窗面板通用 */
body.dark-mode .quiz-intro-panel,
body.dark-mode .quiz-challenge-panel,
body.dark-mode .endless-panel,
body.dark-mode .collection-panel,
body.dark-mode .achievement-panel {
    background: linear-gradient(180deg, #222244 0%, #1e1e3a 100%);
    border-color: var(--color-gold-dark);
}

/* 深色模式 - 英雄介绍面板 */
body.dark-mode .quiz-intro-info .hero-suspense-desc {
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(218, 165, 32, 0.15);
    color: var(--color-text);
}

body.dark-mode .quiz-intro-btn {
    background: linear-gradient(135deg, var(--color-gold-dark) 0%, var(--color-gold) 100%);
    color: #1a1a2e;
    border-color: var(--color-gold-dark);
}

body.dark-mode .quiz-intro-btn:hover {
    box-shadow: 0 6px 20px rgba(218, 165, 32, 0.4);
}

/* 深色模式 - 答题挑战面板 */
body.dark-mode .quiz-challenge-progress {
    color: var(--color-text-light);
}

body.dark-mode .quiz-challenge-progress .progress-label {
    color: var(--color-gold);
}

body.dark-mode .quiz-challenge-question {
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(218, 165, 32, 0.15);
    color: var(--color-text);
}

body.dark-mode .quiz-option-btn {
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(218, 165, 32, 0.2);
    color: var(--color-text);
}

body.dark-mode .quiz-option-btn:hover {
    background: rgba(218, 165, 32, 0.08);
    border-color: var(--color-gold);
}

body.dark-mode .quiz-option-btn.correct {
    border-color: #4caf50;
    background: rgba(76, 175, 80, 0.12);
}

body.dark-mode .quiz-option-btn.correct .option-label {
    background: #4caf50;
}

body.dark-mode .quiz-option-btn.wrong {
    border-color: #ef5350;
    background: rgba(239, 83, 80, 0.12);
}

body.dark-mode .quiz-option-btn.wrong .option-label {
    background: #ef5350;
}

body.dark-mode .quiz-challenge-result.success {
    background: linear-gradient(135deg, rgba(218, 165, 32, 0.12) 0%, rgba(218, 165, 32, 0.04) 100%);
    border-color: rgba(218, 165, 32, 0.3);
}

body.dark-mode .quiz-challenge-result.failure {
    background: linear-gradient(135deg, rgba(139, 0, 0, 0.12) 0%, rgba(139, 0, 0, 0.04) 100%);
    border-color: rgba(139, 0, 0, 0.3);
}

body.dark-mode .quiz-challenge-result .result-hero-name {
    color: var(--color-gold);
}

body.dark-mode .quiz-challenge-result .result-answer {
    color: var(--color-text-light);
}

body.dark-mode .quiz-challenge-retry {
    background: var(--color-gold-dark);
    color: #1a1a2e;
    border-color: var(--color-gold-dark);
}

body.dark-mode .quiz-challenge-retry:hover {
    background: var(--color-gold);
}

/* 深色模式 - 无尽挑战面板 */
body.dark-mode .endless-score .score-value {
    color: var(--color-gold);
}

body.dark-mode .endless-streak .streak-value {
    color: var(--color-red-light);
}

body.dark-mode .endless-highscore {
    color: var(--color-text-light);
    border-bottom-color: rgba(218, 165, 32, 0.1);
}

body.dark-mode .endless-question {
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(218, 165, 32, 0.15);
    color: var(--color-text);
}

body.dark-mode .endless-result.success {
    background: linear-gradient(135deg, rgba(76, 175, 80, 0.1) 0%, rgba(76, 175, 80, 0.04) 100%);
    border-color: rgba(76, 175, 80, 0.25);
}

body.dark-mode .endless-result.failure {
    background: linear-gradient(135deg, rgba(239, 83, 80, 0.1) 0%, rgba(239, 83, 80, 0.04) 100%);
    border-color: rgba(239, 83, 80, 0.25);
}

body.dark-mode .endless-retry {
    background: linear-gradient(135deg, var(--color-gold-dark) 0%, var(--color-gold) 100%);
    color: #1a1a2e;
    border-color: var(--color-gold-dark);
}

/* 深色模式 - 图鉴面板 */
body.dark-mode .collection-header {
    border-bottom-color: rgba(218, 165, 32, 0.15);
    background: linear-gradient(180deg, rgba(218, 165, 32, 0.04) 0%, transparent 100%);
}

body.dark-mode .collection-header .collection-title {
    color: var(--color-gold);
}

body.dark-mode .collection-tab {
    border-color: rgba(218, 165, 32, 0.3);
    color: var(--color-gold);
}

body.dark-mode .collection-tab:hover {
    background: rgba(218, 165, 32, 0.08);
    border-color: var(--color-gold);
}

body.dark-mode .collection-tab.active {
    background: var(--color-gold-dark);
    color: #1a1a2e;
    border-color: var(--color-gold-dark);
}

body.dark-mode .collection-item img {
    border-color: var(--color-gold-dark);
}

body.dark-mode .collection-item-name {
    color: var(--color-gold);
}

body.dark-mode .collection-item.locked img {
    background: #333;
    border-color: #555;
}

body.dark-mode .collection-item.locked .collection-item-name {
    color: #666;
}

/* 深色模式 - 成就面板 */
body.dark-mode .achievement-header {
    border-bottom-color: rgba(218, 165, 32, 0.15);
    background: linear-gradient(180deg, rgba(218, 165, 32, 0.04) 0%, transparent 100%);
}

body.dark-mode .achievement-header .achievement-title {
    color: var(--color-gold);
}

body.dark-mode .achievement-item {
    border-color: rgba(218, 165, 32, 0.12);
    background: rgba(255, 255, 255, 0.03);
}

body.dark-mode .achievement-item:hover {
    border-color: rgba(218, 165, 32, 0.3);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

body.dark-mode .achievement-item.earned {
    border-color: rgba(218, 165, 32, 0.3);
    background: linear-gradient(135deg, rgba(218, 165, 32, 0.08) 0%, rgba(255, 255, 255, 0.03) 100%);
}

body.dark-mode .achievement-item.earned .achievement-item-name {
    color: var(--color-gold);
}

body.dark-mode .achievement-item.locked .achievement-item-name {
    color: #555;
}

body.dark-mode .achievement-item.locked .achievement-item-desc {
    color: #444;
}

/* 深色模式 - 关闭按钮 */
body.dark-mode .panel-close-btn {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(218, 165, 32, 0.3);
    color: var(--color-gold);
}

body.dark-mode .panel-close-btn:hover {
    background: rgba(218, 165, 32, 0.15);
    border-color: var(--color-gold);
}

/* 深色模式 - 进度条 */
body.dark-mode .progress-bar {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(218, 165, 32, 0.2);
}

body.dark-mode .progress-text {
    color: var(--color-gold);
}

/* 深色模式 - 头部按钮 */
body.dark-mode .action-btn {
    border-color: rgba(218, 165, 32, 0.3);
    background: rgba(255, 255, 255, 0.05);
    color: var(--color-gold);
}

body.dark-mode .action-btn:hover {
    background: rgba(218, 165, 32, 0.1);
    border-color: var(--color-gold);
}

/* 深色模式 - 浮动按钮 */
body.dark-mode .pinyin-toggle {
    background: linear-gradient(135deg, #3a3a5c 0%, #4a4a6c 100%);
    border: 1px solid rgba(218, 165, 32, 0.3);
    color: var(--color-gold);
}

body.dark-mode .pinyin-toggle.active {
    background: linear-gradient(135deg, #2e7d32 0%, #4caf50 100%);
    color: #fff;
    border-color: #2e7d32;
}

body.dark-mode .dark-mode-toggle {
    border-color: rgba(218, 165, 32, 0.3);
    background: rgba(255, 255, 255, 0.05);
    color: var(--color-gold);
}

body.dark-mode .dark-mode-toggle:hover {
    background: rgba(218, 165, 32, 0.1);
    border-color: var(--color-gold);
}

/* 深色模式 - 锁定卡片 */
body.dark-mode .locked-front {
    background: linear-gradient(180deg, #222244 0%, #1e1e3a 100%);
    border-color: rgba(218, 165, 32, 0.15);
}

body.dark-mode .locked-image {
    opacity: 0.4;
    filter: grayscale(0.7);
}

body.dark-mode .locked-text {
    color: #D4A574;
    text-shadow: 
        0 0 4px rgba(0,0,0,0.8),
        0 0 8px rgba(0,0,0,0.6),
        1px 1px 2px rgba(0,0,0,0.7);
}

/* 深色模式 - 卡片详情弹窗 */
body.dark-mode .card-detail-panel {
    background: linear-gradient(180deg, #222244 0%, #1e1e3a 100%);
}

body.dark-mode .card-detail-header {
    background: linear-gradient(135deg, rgba(218, 165, 32, 0.06) 0%, rgba(218, 165, 32, 0.03) 100%);
    border-bottom-color: rgba(218, 165, 32, 0.15);
}

body.dark-mode .card-detail-nickname {
    color: var(--color-gold);
}

body.dark-mode .card-detail-name {
    color: var(--color-gold);
    text-shadow: 1px 1px 0 rgba(0, 0, 0, 0.3);
}

body.dark-mode .card-detail-star {
    color: var(--color-text-light);
}

body.dark-mode .detail-info-tag {
    color: var(--color-gold);
    background: rgba(218, 165, 32, 0.06);
    border-color: rgba(218, 165, 32, 0.2);
}

body.dark-mode .card-detail-story-section h4 {
    color: var(--color-gold);
    border-bottom-color: rgba(218, 165, 32, 0.15);
}

body.dark-mode .card-detail-story {
    color: #c0c0c0;
}

body.dark-mode .card-detail-ending-section {
    background: rgba(139, 0, 0, 0.08);
    border-left-color: var(--color-red-light);
}

body.dark-mode .card-detail-ending-section h4 {
    color: var(--color-red-light);
}

body.dark-mode .card-detail-ending {
    color: #a0a0a0;
}

body.dark-mode .card-detail-portrait {
    border-color: var(--color-gold-dark);
}

body.dark-mode .card-detail-enlarge-btn {
    color: var(--color-gold);
    border-color: rgba(218, 165, 32, 0.3);
}

/* 深色模式 - 图片放大弹窗 */
body.dark-mode .front-image-modal {
    background: rgba(0, 0, 0, 0.9);
}

body.dark-mode .front-image-modal-close {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
}

/* ============================
   11. 响应式适配
   ============================ */

/* --- 平板适配 (max-width: 768px) --- */
@media (max-width: 768px) {

    /* 英雄介绍面板 */
    .quiz-intro-panel {
        max-width: 440px;
    }

    .quiz-intro-silhouette {
        max-width: 160px;
        height: 200px;
    }

    .quiz-intro-info {
        padding: 0 20px 8px;
    }

    .quiz-intro-info .hero-suspense-desc {
        font-size: 15px;
        padding: 14px 16px;
    }

    /* 答题挑战面板 */
    .quiz-challenge-panel {
        max-width: 480px;
    }

    .quiz-challenge-progress {
        padding: 16px 20px 10px;
    }

    .quiz-challenge-question {
        font-size: 18px;
        padding: 14px 16px;
        margin: 8px 20px 20px;
    }

    .quiz-challenge-options {
        padding: 0 20px 20px;
    }

    .quiz-option-btn {
        min-height: 48px;
        padding: 10px 16px;
        font-size: 16px;
    }

    .quiz-challenge-result {
        margin: 0 20px 20px;
    }

    .quiz-challenge-result .result-title {
        font-size: 20px;
    }

    .quiz-challenge-result .result-hero-name {
        font-size: 24px;
    }

    /* 无尽挑战面板 */
    .endless-panel {
        max-width: 480px;
    }

    .endless-score .score-value {
        font-size: 40px;
    }

    .endless-question {
        font-size: 18px;
        padding: 14px 16px;
        margin: 12px 20px 16px;
    }

    .endless-options {
        padding: 0 20px 20px;
    }

    .endless-result {
        margin: 0 20px 16px;
    }

    .endless-retry {
        width: calc(100% - 40px);
        margin: 0 20px 20px;
    }

    /* 图鉴面板 */
    .collection-panel {
        max-width: 96vw;
        height: 90vh;
        max-height: 90vh;
        border-radius: 12px;
    }

    .collection-header {
        padding: 12px 50px 8px 16px;
    }

    .collection-header .collection-title {
        font-size: 24px;
        letter-spacing: 4px;
        margin-bottom: 6px;
    }

    .collection-tabs {
        gap: 6px;
        margin-bottom: 4px;
    }

    .collection-tab {
        font-size: 13px;
        padding: 6px 18px;
        min-height: 38px;
    }

    .collection-body {
        padding: 8px 10px;
    }

    .collection-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 8px;
    }

    .collection-item img {
        width: 60px;
        height: 60px;
    }

    .collection-item-name {
        font-size: 11px;
    }

    .collection-body {
        padding: 16px;
    }

    /* 成就面板 */
    .achievement-panel {
        max-width: 95vw;
        max-height: 88vh;
        border-radius: 12px;
    }

    .achievement-header {
        padding: 18px 16px 12px;
    }

    .achievement-header .achievement-title {
        font-size: 24px;
        letter-spacing: 4px;
    }

    .achievement-list {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .achievement-item {
        padding: 16px 10px;
    }

    .achievement-item-icon {
        font-size: 34px;
    }

    .achievement-item-name {
        font-size: 15px;
    }

    .achievement-item-desc {
        font-size: 12px;
    }

    /* 进度条 */
    .progress-bar {
        height: 10px;
    }

    .progress-text {
        font-size: 13px;
    }

    /* 浮动按钮 */
    .floating-btn-container {
        bottom: 16px;
        right: 16px;
    }

    /* 成就通知 */
    .achievement-toast {
        padding: 12px 20px;
        gap: 10px;
    }

    .achievement-toast .toast-icon {
        font-size: 24px;
    }

    .achievement-toast .toast-name {
        font-size: 16px;
    }
}

/* --- 手机适配 (max-width: 480px) --- */
@media (max-width: 480px) {

    /* 手机端弹窗从底部滑入 */
    .quiz-intro-overlay,
    .quiz-challenge-overlay,
    .endless-overlay,
    .achievement-overlay {
        padding: 0;
        align-items: flex-end;
    }

    .quiz-intro-panel,
    .quiz-challenge-panel,
    .endless-panel,
    .achievement-panel {
        width: 100%;
        max-width: 100%;
        max-height: 85vh;
        border-radius: 16px 16px 0 0;
        transform: translateY(100%);
        opacity: 1;
    }

    .quiz-intro-overlay.active .quiz-intro-panel,
    .quiz-challenge-overlay.active .quiz-challenge-panel,
    .endless-overlay.active .endless-panel,
    .achievement-overlay.active .achievement-panel {
        transform: translateY(0);
        opacity: 1;
    }

    /* 图鉴面板 - 手机端全屏 */
    .collection-overlay {
        padding: 0;
    }

    .collection-panel {
        width: 100%;
        height: 100%;
        max-height: 100%;
        border-radius: 0;
        border: none;
        transform: translateY(100%);
        opacity: 1;
    }

    .collection-overlay.active .collection-panel {
        transform: translateY(0);
        opacity: 1;
    }

    /* 英雄介绍面板 */
    .quiz-intro-panel {
        overflow-y: auto;
    }

    .quiz-intro-silhouette {
        max-width: 120px;
        height: 160px;
        margin-bottom: 16px;
    }

    .quiz-intro-info {
        padding: 0 16px 8px;
    }

    .quiz-intro-info .hero-suspense-desc {
        font-size: 14px;
        padding: 12px 14px;
        margin-bottom: 16px;
    }

    .quiz-intro-btn {
        width: calc(100% - 32px);
        margin: 0 16px 24px;
        min-height: 48px;
    }

    /* 答题介绍面板 - 解锁英雄按钮 */
    .quiz-intro-start-btn {
        width: calc(100% - 32px);
        min-width: auto;
        min-height: 52px;
        margin: 4px 16px 20px;
        padding: 14px 24px;
        font-size: 17px;
        letter-spacing: 2px;
    }

    /* 答题挑战面板 */
    .quiz-challenge-panel {
        overflow-y: auto;
    }

    .quiz-challenge-progress {
        padding: 16px 16px 8px;
        font-size: 13px;
    }

    .quiz-challenge-question {
        font-size: 16px;
        padding: 12px 14px;
        margin: 8px 16px 16px;
    }

    .quiz-challenge-options {
        padding: 0 16px 16px;
        gap: 10px;
    }

    .quiz-option-btn {
        min-height: 50px;
        padding: 12px 14px;
        font-size: 15px;
        border-radius: 10px;
    }

    .quiz-option-btn .option-label {
        width: 30px;
        height: 30px;
        font-size: 14px;
    }

    .quiz-challenge-result {
        margin: 0 16px 16px;
        padding: 16px;
    }

    .quiz-challenge-result .result-title {
        font-size: 18px;
    }

    .quiz-challenge-result .result-hero-name {
        font-size: 22px;
    }

    .quiz-challenge-retry {
        width: calc(100% - 32px);
        margin: 0 16px 20px;
    }

    /* 无尽挑战面板 */
    .endless-panel {
        overflow-y: auto;
    }

    .endless-score {
        padding: 16px 16px 4px;
    }

    .endless-score .score-value {
        font-size: 36px;
    }

    .endless-streak {
        padding: 4px 16px 4px;
    }

    .endless-highscore {
        padding: 4px 16px 12px;
    }

    .endless-question {
        font-size: 16px;
        padding: 12px 14px;
        margin: 12px 16px 16px;
    }

    .endless-options {
        padding: 0 16px 16px;
        gap: 10px;
    }

    .endless-result {
        margin: 0 16px 12px;
        padding: 14px;
    }

    .endless-retry {
        width: calc(100% - 32px);
        margin: 0 16px 20px;
    }

    /* 图鉴面板 */
    .collection-header {
        padding: 16px 12px 10px;
    }

    .collection-header .collection-title {
        font-size: 22px;
        letter-spacing: 3px;
        margin-bottom: 12px;
    }

    .collection-tabs {
        gap: 4px;
        flex-wrap: wrap;
        justify-content: center;
    }

    .collection-tab {
        font-size: 12px;
        padding: 6px 14px;
        min-height: 40px;
    }

    .collection-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 8px;
    }

    .collection-item img {
        width: 52px;
        height: 52px;
    }

    .collection-item-name {
        font-size: 11px;
    }

    .collection-body {
        padding: 12px;
    }

    /* 成就面板 */
    .achievement-panel {
        overflow-y: auto;
    }

    .achievement-header {
        padding: 16px 14px 10px;
    }

    .achievement-header .achievement-title {
        font-size: 22px;
        letter-spacing: 3px;
    }

    .achievement-list {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    .achievement-item {
        padding: 14px 8px;
    }

    .achievement-item-icon {
        font-size: 30px;
    }

    .achievement-item-name {
        font-size: 14px;
    }

    .achievement-item-desc {
        font-size: 11px;
    }

    .achievement-body {
        padding: 14px;
    }

    /* 关闭按钮 */
    .panel-close-btn {
        width: 44px;
        height: 44px;
        font-size: 24px;
    }

    /* 头部按钮 */
    .header-actions {
        flex-wrap: wrap;
        gap: 6px;
    }

    .action-btn {
        font-size: 12px;
        padding: 4px 10px;
    }

    /* 进度条 */
    .progress-bar {
        height: 10px;
    }

    .progress-text {
        font-size: 12px;
        min-width: 40px;
    }

    /* 浮动按钮 */
    .floating-btn-container {
        bottom: 12px;
        right: 12px;
        gap: 8px;
    }

    .pinyin-toggle,
    .dark-mode-toggle {
        font-size: 12px;
        padding: 5px 10px;
        min-height: 40px;
    }

    /* 锁定卡片 */
    .locked-image {
        object-fit: cover;
        object-position: center center;
    }

    .locked-text {
        top: 6%;
        gap: 2px;
    }
    .locked-text-top {
        font-size: 18px;
        letter-spacing: 3px;
        font-weight: 600;
        -webkit-text-stroke: 0.2px rgba(139, 69, 19, 0.15);
    }
    .locked-text-bottom {
        font-size: 14px;
        letter-spacing: 2px;
    }

    /* iOS 设备专用优化 */
    @supports (-webkit-touch-callout: none) {
        .locked-text {
            font-family: 'Xingkai SC', 'KaiTi', 'STKaiti', 'PingFang SC', serif;
        }
        .locked-text-top {
            font-weight: 500;
            -webkit-text-stroke: 0.2px rgba(60, 60, 60, 0.15);
        }
    }

    /* 成就通知 - 手机端适配 */
    .achievement-toast {
        top: 12px;
        left: 12px;
        right: 12px;
        transform: translateY(-120px);
        padding: 12px 16px;
        white-space: normal;
    }

    .achievement-toast.show {
        transform: translateY(0);
    }

    .achievement-toast.hide {
        transform: translateY(-120px);
    }

    .achievement-toast .toast-icon {
        font-size: 22px;
    }

    .achievement-toast .toast-label {
        font-size: 11px;
    }

    .achievement-toast .toast-name {
        font-size: 15px;
    }
}

/* ============================
   12. 通用动画 & 工具类
   ============================ */

/* 淡入动画 */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* 从下方滑入 */
@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 缩放弹入 */
@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* 金色闪光效果（解锁时） */
@keyframes goldShine {
    0% { background-position: -200% center; }
    100% { background-position: 200% center; }
}

.unlock-shine {
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(218, 165, 32, 0.3) 45%,
        rgba(255, 215, 0, 0.5) 50%,
        rgba(218, 165, 32, 0.3) 55%,
        transparent 100%
    );
    background-size: 200% 100%;
    animation: goldShine 1.5s ease-in-out;
}

/* 无障碍 - 减少动画 */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}