/* ============================================================
   亲子时光 · family.css
   风格：水墨道风（柔和版） — 墨绿 #2e5f5f / 淡金 #d4c9a8 / 宣纸 #faf8f0
   亲子场景：更大圆角、更宽松间距、更柔和的视觉
   ============================================================ */

/* ----- CSS 变量 ----- */
:root {
    --family-bg: #faf8f0;
    --family-accent: #2e5f5f;
    --family-accent-light: #5a8a7a;
    --family-border: #d4c9a8;
    --family-text: #2c2c2c;
    --family-text-light: #6a7a7a;
    --family-hui-bg: #f0ede0;
    --family-user-bg: #e8f0ee;
    --family-radius: 16px;
    --family-radius-sm: 10px;
    --family-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
    --family-font: "Noto Serif SC", "Source Han Serif SC", "Microsoft YaHei", serif;
}

/* ----- 页面基础 ----- */
body {
    background-color: var(--family-bg);
    font-family: var(--family-font);
    max-width: 720px;
    margin: 0 auto;
    padding: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ----- 顶部导航 ----- */
.family-nav {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
    border-bottom: 1px solid var(--family-border);
    background: rgba(250, 248, 240, 0.95);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(4px);
}

.family-nav-back {
    color: var(--family-accent);
    text-decoration: none;
    font-size: 0.9em;
    white-space: nowrap;
    padding: 6px 12px;
    border-radius: var(--family-radius-sm);
    transition: background 0.2s;
}

.family-nav-back:hover {
    background: rgba(46, 95, 95, 0.08);
    text-decoration: none;
}

.family-nav-title {
    color: var(--family-accent);
    font-size: 1em;
    font-weight: 600;
    letter-spacing: 1px;
    flex: 1;
}

/* ===== P2: 模式切换栏（独立一行，不受 nav 空间限制）===== */
.family-mode-bar {
    display: flex;
    justify-content: center;
    gap: 10px;
    padding: 10px 20px 4px;
    border-bottom: 1px solid var(--family-border);
    background: rgba(250, 248, 240, 0.95);
}

.mode-segment {
    padding: 8px 22px;
    font-size: 0.9em;
    font-family: var(--family-font);
    cursor: pointer;
    background: transparent;
    border: 1px solid var(--family-border);
    border-radius: var(--family-radius-sm);
    color: var(--family-text-light);
    transition: background 0.2s, color 0.2s, border-color 0.2s;
    white-space: nowrap;
    min-height: 40px;
}

.mode-segment:hover {
    background: rgba(46, 95, 95, 0.06);
    border-color: var(--family-accent);
}

.mode-segment.active {
    background: var(--family-accent);
    color: #faf8f0;
    border-color: var(--family-accent);
}

/* ----- 主内容区 ----- */
.family-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 0 20px 20px;
}

/* ============================================================
   慧惠欢迎区
   ============================================================ */

.huihui-welcome {
    text-align: center;
    padding: 36px 20px 24px;
    transition: opacity 0.4s;
}

/* 水墨叶子头像 */
.huihui-avatar {
    display: flex;
    justify-content: center;
    margin-bottom: 24px;
}

.huihui-avatar-outer {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: radial-gradient(circle at 45% 40%, rgba(58, 122, 106, 0.18) 0%, rgba(46, 95, 95, 0.10) 40%, rgba(212, 201, 168, 0.08) 70%, transparent 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    animation: huihui-breathe 4s ease-in-out infinite;
}

.huihui-avatar-inner {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: radial-gradient(circle at 50% 40%, rgba(46, 95, 95, 0.25) 0%, rgba(46, 95, 95, 0.08) 50%, transparent 70%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.huihui-avatar-inner svg {
    width: 42px;
    height: 42px;
    fill: none;
    stroke: #2e5f5f;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    opacity: 0.8;
}

@keyframes huihui-breathe {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }
}

/* 欢迎消息 */
.huihui-message {
    max-width: 500px;
    margin: 0 auto 24px;
    font-size: 1.05em;
    color: var(--family-text);
    line-height: 1.9;
    text-align: center;
}

.huihui-message p {
    margin: 0 0 10px;
}

.huihui-message p:last-child {
    margin-bottom: 0;
}

/* 年龄选择按钮 */
.age-selector {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 8px;
}

.age-btn {
    padding: 14px 28px;
    font-size: 1.05em;
    font-family: var(--family-font);
    color: var(--family-accent);
    background: rgba(46, 95, 95, 0.06);
    border: 1.5px solid var(--family-border);
    border-radius: 40px;
    cursor: pointer;
    transition: all 0.25s;
    min-height: 48px;
    min-width: 100px;
}

.age-btn:hover {
    background: rgba(46, 95, 95, 0.14);
    border-color: var(--family-accent);
    transform: translateY(-1px);
}

.age-btn:active {
    transform: translateY(0);
}

.age-btn.selected {
    background: var(--family-accent);
    color: #faf8f0;
    border-color: var(--family-accent);
}

.age-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* ===== P2 新增：恢复提示 ===== */
.resume-prompt {
    max-width: 460px;
    margin: 0 auto 20px;
    padding: 24px 20px;
    background: rgba(46, 95, 95, 0.04);
    border: 1px solid var(--family-border);
    border-radius: var(--family-radius);
    text-align: center;
}

.resume-prompt-title {
    font-size: 1em;
    color: var(--family-text);
    margin-bottom: 18px;
    line-height: 1.8;
}

.resume-prompt-title strong {
    color: var(--family-accent);
    font-weight: 600;
}

.resume-prompt-actions {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
}

.resume-btn {
    padding: 12px 28px;
    font-size: 0.95em;
    font-family: var(--family-font);
    font-weight: 600;
    color: #faf8f0;
    background: var(--family-accent);
    border: none;
    border-radius: 24px;
    cursor: pointer;
    transition: all 0.25s;
    min-height: 44px;
}

.resume-btn:hover {
    background: #1d4a4a;
    transform: translateY(-1px);
}

.resume-btn-secondary {
    background: transparent;
    color: var(--family-accent);
    border: 1px solid var(--family-border);
}

.resume-btn-secondary:hover {
    background: rgba(46, 95, 95, 0.08);
    transform: translateY(-1px);
}

/* ===== P2 新增：章节号输入 ===== */
.chapter-input-area {
    margin-top: 16px;
    text-align: center;
}

.chapter-input-label {
    display: block;
    font-size: 0.95em;
    color: var(--family-text-light);
    margin-bottom: 12px;
}

.chapter-input-row {
    display: flex;
    gap: 10px;
    justify-content: center;
    align-items: center;
    margin-bottom: 12px;
}

.chapter-num-input {
    width: 100px;
    padding: 12px 16px;
    font-size: 1em;
    font-family: var(--family-font);
    color: var(--family-text);
    background: #fff;
    border: 1.5px solid var(--family-border);
    border-radius: var(--family-radius-sm);
    outline: none;
    text-align: center;
    transition: border-color 0.2s;
}

.chapter-num-input:focus {
    border-color: var(--family-accent);
}

.browse-all-btn {
    padding: 8px 18px;
    font-size: 0.85em;
    font-family: var(--family-font);
    color: var(--family-accent);
    background: transparent;
    border: 1px solid var(--family-border);
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.2s;
}

.browse-all-btn:hover {
    background: rgba(46, 95, 95, 0.08);
    border-color: var(--family-accent);
}

/* ===== P2 新增：进度条 ===== */
.chapter-progress {
    padding: 8px 0 4px;
}

.progress-bar {
    height: 6px;
    background: var(--family-border);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--family-accent);
    border-radius: 3px;
    transition: width 0.5s ease;
    min-width: 0;
}

.progress-text {
    font-size: 0.8em;
    color: var(--family-text-light);
    margin-top: 4px;
    text-align: center;
}

/* ============================================================
   对话区
   ============================================================ */

.dialogue-area {
    flex: 1;
    overflow-y: auto;
    padding: 16px 0 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* 对话气泡通用样式 */
.chat-bubble {
    max-width: 85%;
    padding: 14px 18px;
    border-radius: var(--family-radius);
    font-size: 0.98em;
    line-height: 1.85;
    word-break: break-word;
    animation: bubble-in 0.35s ease-out;
}

@keyframes bubble-in {
    from {
        opacity: 0;
        transform: translateY(12px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 慧惠气泡：左对齐 */
.chat-bubble-huihui {
    align-self: flex-start;
    background: var(--family-hui-bg);
    color: var(--family-text);
    border-bottom-left-radius: 4px;
}

/* 用户气泡：右对齐 */
.chat-bubble-user {
    align-self: flex-end;
    background: var(--family-user-bg);
    color: var(--family-text);
    border-bottom-right-radius: 4px;
    text-align: left;
}

/* 气泡中的段落 */
.chat-bubble p {
    margin: 0 0 8px;
}

.chat-bubble p:last-child {
    margin-bottom: 0;
}

/* 提示文字（引导语） */
.chat-hint {
    display: block;
    margin-top: 8px;
    font-size: 0.82em;
    color: var(--family-text-light);
    font-style: italic;
}

/* 系统消息（居中提示） */
.chat-system {
    align-self: center;
    text-align: center;
    max-width: 80%;
    padding: 10px 20px;
    font-size: 0.9em;
    color: var(--family-text-light);
    background: rgba(212, 201, 168, 0.2);
    border-radius: 24px;
    animation: bubble-in 0.35s ease-out;
}

/* 章节介绍卡片 */
.chapter-intro-card {
    align-self: stretch;
    text-align: center;
    padding: 20px 24px;
    margin: 8px 0;
    background: rgba(46, 95, 95, 0.04);
    border: 1px solid var(--family-border);
    border-radius: var(--family-radius);
}

.chapter-intro-card .chapter-icon {
    font-size: 1.6em;
    margin-bottom: 8px;
}

.chapter-intro-card .chapter-title {
    font-size: 1.1em;
    font-weight: 600;
    color: var(--family-accent);
    margin-bottom: 4px;
}

.chapter-intro-card .chapter-subtitle {
    font-size: 0.9em;
    color: var(--family-text-light);
}

/* 家长提示卡片 */
.parent-tips-card {
    background: rgba(212, 201, 168, 0.15);
    border: 1px solid var(--family-border);
    margin-top: 8px;
}

/* ============================================================
   Loading 动画
   ============================================================ */

.loading-bubble {
    opacity: 0.7;
}

.loading-dots {
    color: var(--family-text-light);
    font-style: italic;
}

.loading-dots .dot {
    animation: dot-pulse 1.4s infinite;
    display: inline-block;
}

.loading-dots .dot:nth-child(1) {
    animation-delay: 0s;
}

.loading-dots .dot:nth-child(2) {
    animation-delay: 0.2s;
}

.loading-dots .dot:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes dot-pulse {

    0%,
    80%,
    100% {
        opacity: 0;
    }

    40% {
        opacity: 1;
    }
}

/* ============================================================
   章节选择器
   ============================================================ */

.chapter-selector {
    padding: 20px 0;
    text-align: center;
}

.chapter-selector-title {
    font-size: 1em;
    color: var(--family-accent);
    margin-bottom: 16px;
    font-weight: 600;
}

.chapter-cards {
    /* 容器由 showAllChaptersSelector() 动态填充 theme-group 元素 */
}

/* 旧版 3 章卡片（向后兼容，section-wise 选择器） */
.chapter-card {
    flex: 1;
    min-width: 160px;
    max-width: 200px;
    padding: 18px 16px;
    background: rgba(250, 248, 240, 0.8);
    border: 1.5px solid var(--family-border);
    border-radius: var(--family-radius);
    cursor: pointer;
    transition: all 0.25s;
    text-align: center;
}

.chapter-card:hover {
    border-color: var(--family-accent);
    background: rgba(46, 95, 95, 0.06);
    transform: translateY(-2px);
}

.chapter-card .card-chapter-num {
    font-size: 0.85em;
    color: var(--family-text-light);
    margin-bottom: 4px;
}

.chapter-card .card-chapter-title {
    font-size: 1em;
    font-weight: 600;
    color: var(--family-accent);
}

/* ===== P2 新增：81 章网格选择器（横向右到左布局）===== */

.theme-group {
    display: flex;
    flex-direction: row;
    align-items: center;
    margin-bottom: 10px;
}

.theme-group-title {
    flex-shrink: 0;
    order: 1;
    font-size: 0.82em;
    color: var(--family-accent);
    font-weight: 600;
    margin-left: 10px;
    white-space: nowrap;
    line-height: 36px;
}

.chapter-grid {
    flex: 1 1 auto;
    min-width: 0;
    display: flex;
    flex-wrap: wrap;
    flex-direction: row-reverse;
    justify-content: flex-start;
    gap: 5px;
}

/* 连续学习模式：少量卡片居中排列 */
.chapter-grid--continuous {
    justify-content: center;
    gap: 8px;
}

.chapter-mini-card {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75em;
    font-weight: 600;
    color: var(--family-accent);
    background: rgba(250, 248, 240, 0.8);
    border: 1.5px solid var(--family-border);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
    position: relative;
}

.chapter-mini-card:hover {
    border-color: var(--family-accent);
    background: rgba(46, 95, 95, 0.08);
    transform: translateY(-1px);
}

.chapter-mini-card .mini-num {
    line-height: 1;
}

.chapter-mini-card .mini-check {
    position: absolute;
    top: -4px;
    right: -4px;
    font-size: 0.7em;
    color: #5a8a7a;
    background: #e8f5e9;
    border-radius: 50%;
    width: 14px;
    height: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

.chapter-mini-card .mini-lock {
    position: absolute;
    bottom: -2px;
    right: -2px;
    font-size: 0.6em;
}

.chapter-mini-card.done {
    border-color: #5a8a7a;
    background: #e8f5e9;
}

.chapter-mini-card.locked {
    border-color: #d4c9a8;
    background: rgba(212, 201, 168, 0.15);
    opacity: 0.7;
    cursor: pointer;
}

.chapter-mini-card.locked:hover {
    border-color: #c0a870;
    opacity: 1;
}

/* 连续学习模式：当前章节高亮 */
.chapter-mini-card.current {
    background: var(--family-accent);
    color: #faf8f0;
    border-color: var(--family-accent);
    box-shadow: 0 0 0 2px rgba(46, 95, 95, 0.2);
}

.chapter-mini-card.current:hover {
    background: rgba(46, 95, 95, 0.85);
    border-color: var(--family-accent);
}

/* ===== P2 新增：未审核章卡片 ===== */
.unapproved-card {
    border-color: #d4c9a8;
    background: rgba(212, 201, 168, 0.08);
}

.unapproved-link {
    display: inline-block;
    margin-top: 10px;
    padding: 8px 18px;
    font-size: 0.88em;
    color: var(--family-accent);
    text-decoration: none;
    border: 1px solid var(--family-border);
    border-radius: 20px;
    transition: all 0.2s;
}

.unapproved-link:hover {
    background: rgba(46, 95, 95, 0.08);
    border-color: var(--family-accent);
    text-decoration: none;
}

/* ============================================================
   输入区
   ============================================================ */

.input-area {
    padding: 12px 0 8px;
    border-top: 1px solid var(--family-border);
    background: var(--family-bg);
    position: sticky;
    bottom: 0;
}

.user-input {
    width: 100%;
    padding: 12px 16px;
    font-size: 0.95em;
    font-family: var(--family-font);
    color: var(--family-text);
    background: #fff;
    border: 1.5px solid var(--family-border);
    border-radius: var(--family-radius-sm);
    resize: none;
    outline: none;
    transition: border-color 0.2s;
    line-height: 1.6;
    margin-bottom: 10px;
}

.user-input:focus {
    border-color: var(--family-accent);
}

.user-input:disabled {
    background: #f5f3ec;
    color: #bbb;
    cursor: not-allowed;
}

.user-input::placeholder {
    color: #c0bca8;
}

.input-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.send-btn {
    padding: 12px 28px;
    font-size: 0.95em;
    font-family: var(--family-font);
    font-weight: 600;
    color: #faf8f0;
    background: var(--family-accent);
    border: none;
    border-radius: 24px;
    cursor: pointer;
    transition: all 0.25s;
    min-height: 44px;
    white-space: nowrap;
}

.send-btn:hover {
    background: #1d4a4a;
    transform: translateY(-1px);
}

.send-btn:active {
    transform: translateY(0);
}

.send-btn:disabled {
    background: #bbb;
    cursor: not-allowed;
    transform: none;
}

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

.action-btn {
    padding: 10px 18px;
    font-size: 0.85em;
    font-family: var(--family-font);
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.2s;
    min-height: 40px;
    white-space: nowrap;
}

.action-btn-secondary {
    color: var(--family-accent);
    background: transparent;
    border: 1px solid var(--family-border);
}

.action-btn-secondary:hover {
    background: rgba(46, 95, 95, 0.08);
    border-color: var(--family-accent);
}

.action-btn-secondary:disabled {
    color: #bbb;
    border-color: #e0dcc8;
    cursor: not-allowed;
}

/* ============================================================
   移动端适配
   ============================================================ */

@media (max-width: 600px) {
    .family-nav {
        padding: 10px 14px;
        gap: 8px;
    }

    .family-nav-title {
        font-size: 0.9em;
    }

    .huihui-welcome {
        padding: 24px 12px 18px;
    }

    .huihui-avatar-outer {
        width: 84px;
        height: 84px;
    }

    .huihui-avatar-inner {
        width: 54px;
        height: 54px;
    }

    .huihui-avatar-inner svg {
        width: 36px;
        height: 36px;
    }

    .huihui-message {
        font-size: 1em;
    }

    .age-selector {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
        padding: 0 8px;
    }

    .age-btn {
        padding: 16px 24px;
        font-size: 1.1em;
        min-height: 50px;
    }

    .dialogue-area {
        padding: 12px 4px 20px;
        gap: 12px;
    }

    .chat-bubble {
        max-width: 92%;
        padding: 12px 14px;
        font-size: 0.95em;
    }

    .chapter-cards {
        flex-direction: column;
        align-items: stretch;
    }

    .chapter-card {
        max-width: none;
    }

    .input-area {
        padding: 10px 4px 6px;
    }

    .input-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .send-btn {
        padding: 14px;
        text-align: center;
    }

    .secondary-actions {
        justify-content: center;
    }

    .action-btn {
        flex: 1;
        text-align: center;
        min-height: 44px;
    }

    /* ===== P2 移动端：模式切换栏 ===== */
    .family-mode-bar {
        padding: 8px 14px 4px;
        gap: 8px;
        position: sticky;
        top: 48px;
        z-index: 99;
    }

    .mode-segment {
        flex: 1;
        padding: 10px 16px;
        font-size: 0.85em;
        min-height: 44px;
        text-align: center;
    }

    /* ===== P2 移动端：恢复提示 ===== */
    .resume-prompt {
        max-width: none;
        padding: 18px 14px;
        margin: 0 8px 16px;
    }

    .resume-prompt-title {
        font-size: 0.93em;
    }

    .resume-prompt-actions {
        flex-direction: column;
        gap: 8px;
    }

    .resume-btn {
        padding: 14px;
        text-align: center;
        font-size: 0.93em;
    }

    /* ===== P2 移动端：章节号输入 ===== */
    .chapter-input-area {
        padding: 0 8px;
    }

    .chapter-input-label {
        font-size: 0.9em;
    }

    .chapter-input-row {
        flex-direction: column;
        gap: 8px;
    }

    .chapter-num-input {
        width: 100%;
        max-width: 200px;
    }

    /* ===== P2 移动端：进度条 ===== */
    .chapter-progress {
        padding: 6px 8px 2px;
    }

    .progress-text {
        font-size: 0.75em;
    }

    /* ===== P2 移动端：81 章网格（右到左横向）===== */
    .chapter-grid {
        gap: 4px;
    }

    .chapter-mini-card {
        width: 32px;
        height: 32px;
        font-size: 0.73em;
        border-radius: 5px;
    }

    .theme-group {
        margin-bottom: 8px;
        flex-wrap: wrap;
        justify-content: flex-end;
    }

    .theme-group-title {
        font-size: 0.75em;
        line-height: 32px;
        margin-left: 6px;
    }

    .chapter-mini-card .mini-check {
        width: 12px;
        height: 12px;
        font-size: 0.6em;
        top: -3px;
        right: -3px;
    }

    .chapter-mini-card .mini-lock {
        font-size: 0.55em;
        bottom: -2px;
        right: -2px;
    }

    .chapter-mini-card.current {
        box-shadow: 0 0 0 2px rgba(46, 95, 95, 0.25);
    }

    /* ===== P2 移动端：未审核卡片链接 ===== */
    .unapproved-link {
        padding: 10px 16px;
        font-size: 0.85em;
        display: block;
        text-align: center;
    }
}