/* ============================================================
 * 常用电话·邮箱查询大全 /tools/phonebook
 * 三端响应式：电脑(≥1024) / 平板(768–1023) / 手机(<768)
 * 设计升级版：玻璃质感 Hero / 吸顶分类栏 / 卡片悬浮
 * ============================================================ */

/* 占满整个电脑端屏幕：覆盖全站 .app / .main-content 的宽度限制 */
body.page-phonebook-full .app { max-width: 100%; }
body.page-phonebook-full .main-content { max-width: 100%; border-right: 0; }

.pb-page {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 clamp(16px, 3vw, 48px) 64px;
}

/* ============================================================
 * Hero：玻璃质感渐变卡片
 * ============================================================ */
.pb-hero {
    position: relative;
    padding: clamp(20px, 3vw, 32px) 0 clamp(18px, 2.5vw, 24px);
}
.pb-hero-inner {
    position: relative;
    overflow: hidden;
    border-radius: clamp(18px, 2vw, 24px);
    border: 1px solid var(--border-color);
    background:
        radial-gradient(56% 140% at 88% -30%, color-mix(in srgb, var(--accent, #136ce9) 22%, transparent), transparent 62%),
        radial-gradient(44% 120% at 4% 130%, color-mix(in srgb, #7c5cff 18%, transparent), transparent 60%),
        linear-gradient(150deg, color-mix(in srgb, var(--bg-secondary) 96%, var(--accent, #136ce9)) 0%, var(--bg-secondary) 60%);
    padding: clamp(22px, 3.5vw, 40px) clamp(18px, 3vw, 40px) clamp(18px, 2.6vw, 28px);
}
.pb-hero-inner::after {
    content: '';
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: radial-gradient(40% 60% at 100% 100%, color-mix(in srgb, var(--accent, #136ce9) 8%, transparent), transparent 70%);
}

.pb-brand {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    gap: clamp(12px, 2vw, 18px);
}
.pb-logo {
    width: clamp(46px, 5vw, 58px);
    height: clamp(46px, 5vw, 58px);
    border-radius: clamp(14px, 1.6vw, 18px);
    display: flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg, var(--accent, #136ce9), #7c5cff);
    color: #fff;
    font-size: clamp(22px, 2.6vw, 30px);
    flex-shrink: 0;
    box-shadow: 0 10px 26px color-mix(in srgb, var(--accent, #136ce9) 38%, transparent);
}
.pb-brand-text h1 {
    font-size: clamp(20px, 2.6vw, 28px);
    font-weight: 800;
    color: var(--text-primary);
    margin: 0 0 5px;
    letter-spacing: -.3px;
}
.pb-brand-text p {
    font-size: clamp(12px, 1.4vw, 14px);
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.6;
}

/* 搜索框：卡片化大搜索 */
.pb-search {
    position: relative;
    z-index: 1;
    display: flex; align-items: center; gap: 10px;
    margin-top: clamp(14px, 2vw, 22px);
    background: color-mix(in srgb, var(--bg-primary) 82%, transparent);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: clamp(12px, 1.6vw, 16px);
    padding: clamp(10px, 1.4vw, 14px) clamp(14px, 1.8vw, 18px);
    box-shadow: 0 6px 20px color-mix(in srgb, #000 6%, transparent);
    transition: border-color .2s, box-shadow .2s, transform .2s;
}
.pb-search:focus-within {
    border-color: var(--accent, #136ce9);
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent, #136ce9) 16%, transparent), 0 8px 24px color-mix(in srgb, #000 8%, transparent);
    transform: translateY(-1px);
}
.pb-search svg {
    color: var(--text-secondary);
    flex-shrink: 0;
    width: 20px; height: 20px;
}
.pb-search-input {
    flex: 1; min-width: 0;
    border: none; outline: none; background: transparent;
    color: var(--text-primary);
    font-size: clamp(14px, 1.6vw, 16px);
    line-height: 24px;
}
.pb-search-input::placeholder { color: var(--text-tertiary, #98a4b3); }
.pb-search-clear {
    border: none; background: color-mix(in srgb, var(--text-primary) 8%, transparent);
    color: var(--text-secondary);
    width: 26px; height: 26px;
    border-radius: 50%;
    font-size: 14px; line-height: 1;
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: background .15s, color .15s;
}
.pb-search-clear:hover { background: color-mix(in srgb, var(--accent, #136ce9) 16%, transparent); color: var(--accent, #136ce9); }

/* 统计徽章 */
.pb-stats {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 12px;
    font-size: 12.5px;
    color: var(--text-secondary);
}
.pb-stats b {
    color: var(--accent, #136ce9);
    font-weight: 800;
    font-variant-numeric: tabular-nums;
}
.pb-stats-chip {
    display: inline-flex; align-items: center; gap: 6px;
    background: color-mix(in srgb, var(--accent, #136ce9) 10%, transparent);
    border: 1px solid color-mix(in srgb, var(--accent, #136ce9) 24%, transparent);
    color: var(--accent, #136ce9);
    border-radius: 999px;
    padding: 3px 12px;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}
.pb-stats-tip { opacity: .75; }

/* ============================================================
 * 快捷拨打
 * ============================================================ */
.pb-hot {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: clamp(8px, 1vw, 12px);
    padding: 4px 0 18px;
}
.pb-hot-item {
    display: flex; align-items: center; justify-content: center; gap: 10px;
    background: color-mix(in srgb, var(--bg-secondary) 88%, var(--accent, #136ce9) 4%);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: clamp(10px, 1.2vw, 14px) 12px;
    cursor: pointer;
    text-decoration: none;
    transition: transform .18s, border-color .18s, box-shadow .18s, background .18s;
}
.pb-hot-item:hover {
    transform: translateY(-2px);
    border-color: color-mix(in srgb, var(--accent, #136ce9) 55%, var(--border-color));
    background: color-mix(in srgb, var(--accent, #136ce9) 8%, var(--bg-secondary));
    box-shadow: 0 8px 20px color-mix(in srgb, var(--accent, #136ce9) 16%, transparent);
}
.pb-hot-num {
    font-size: clamp(16px, 1.8vw, 20px);
    font-weight: 800;
    color: var(--accent, #136ce9);
    letter-spacing: .5px;
    font-variant-numeric: tabular-nums;
}
.pb-hot-name {
    font-size: clamp(11px, 1.2vw, 13px);
    color: var(--text-primary);
    white-space: nowrap;
}

/* ============================================================
 * 分类导航：平板/手机吸顶横向滑动
 * ============================================================ */
.pb-cats-wrap {
    position: sticky;
    top: 0;
    z-index: 60;
    padding: 10px 0 14px;
    background: color-mix(in srgb, var(--bg-primary) 88%, transparent);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    margin: 0 calc(clamp(16px, 3vw, 48px) * -1);
    padding-left: clamp(16px, 3vw, 48px);
    padding-right: clamp(16px, 3vw, 48px);
    transition: box-shadow .2s;
}
.pb-cats-wrap.pb-cats-stuck { box-shadow: 0 8px 24px color-mix(in srgb, #000 6%, transparent); }
.pb-cats {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.pb-cat {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 7px 14px;
    border-radius: 999px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: 13px;
    cursor: pointer;
    user-select: none;
    white-space: nowrap;
    transition: background .18s, color .18s, border-color .18s, transform .18s, box-shadow .18s;
}
.pb-cat:hover {
    border-color: var(--accent, #136ce9);
    transform: translateY(-1px);
}
.pb-cat.active {
    background: linear-gradient(135deg, var(--accent, #136ce9), #5b5cf0);
    border-color: transparent;
    color: #fff;
    box-shadow: 0 4px 14px color-mix(in srgb, var(--accent, #136ce9) 34%, transparent);
}
.pb-cat .pb-cat-icon { font-size: 14px; line-height: 1; }
.pb-cat .pb-cat-count {
    font-size: 11px;
    background: color-mix(in srgb, var(--text-primary) 10%, transparent);
    border-radius: 999px;
    padding: 1px 7px;
    font-variant-numeric: tabular-nums;
    line-height: 1.6;
}
.pb-cat.active .pb-cat-count { background: rgba(255, 255, 255, .22); }

/* ============================================================
 * 主体
 * ============================================================ */
.pb-main { padding-bottom: 24px; }
.pb-section-head {
    display: flex; align-items: center; gap: 12px;
    padding: 14px 0 16px;
}
.pb-section-title {
    font-size: 18px; font-weight: 800;
    color: var(--text-primary);
    margin: 0;
    letter-spacing: -.2px;
}
.pb-section-count {
    font-size: 12px; color: var(--text-secondary);
    background: color-mix(in srgb, var(--accent, #136ce9) 10%, transparent);
    border: 1px solid color-mix(in srgb, var(--accent, #136ce9) 22%, transparent);
    color: var(--accent, #136ce9);
    border-radius: 999px;
    padding: 3px 12px;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}

/* 条目瀑布流：CSS 多列实现 masonry，高度不一卡片自然错落，三端自适应列数 */
.pb-grid {
    column-count: 3;
    column-gap: clamp(10px, 1.4vw, 16px);
}
.pb-grid .pb-card {
    /* 多列容器内避免跨列断行，且占满列宽 */
    break-inside: avoid;
    -webkit-column-break-inside: avoid;
    page-break-inside: avoid;
    display: inline-block;
    width: 100%;
    margin-bottom: clamp(10px, 1.4vw, 16px);
}

/* ============================================================
 * 条目卡片：悬浮设计
 * ============================================================ */
.pb-card {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 9px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 16px 18px;
    overflow: hidden;
    transition: transform .18s, border-color .18s, box-shadow .18s, background .18s;
}
/* 顶部左侧分类色条装饰 */
.pb-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 3px; height: 100%;
    background: linear-gradient(180deg, var(--accent, #136ce9), #7c5cff);
    opacity: 0;
    transition: opacity .18s;
}
.pb-card:hover {
    transform: translateY(-3px);
    border-color: color-mix(in srgb, var(--accent, #136ce9) 45%, var(--border-color));
    background: color-mix(in srgb, var(--bg-secondary) 92%, var(--accent, #136ce9) 4%);
    box-shadow: 0 12px 28px color-mix(in srgb, #000 9%, transparent);
}
.pb-card:hover::before { opacity: 1; }

/* 卡片顶行：分类徽章 + 操作 */
.pb-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}
.pb-card-cat {
    display: inline-flex; align-items: center; gap: 5px;
    font-size: 11px; font-weight: 700;
    color: var(--accent, #136ce9);
    background: color-mix(in srgb, var(--accent, #136ce9) 10%, transparent);
    border: 1px solid color-mix(in srgb, var(--accent, #136ce9) 20%, transparent);
    padding: 2px 10px;
    border-radius: 999px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 80%;
}
.pb-card-name {
    font-size: 15px; font-weight: 800;
    color: var(--text-primary);
    line-height: 1.45;
    letter-spacing: -.2px;
}
/* 大号号码 */
.pb-card-tel {
    display: inline-flex; align-items: center; gap: 7px;
    font-size: clamp(17px, 1.7vw, 20px);
    font-weight: 800;
    color: var(--accent, #136ce9);
    letter-spacing: .6px;
    font-variant-numeric: tabular-nums;
    text-decoration: none;
    padding: 8px 0 2px;
    transition: color .15s;
    word-break: break-all;
}
.pb-card-tel:hover { color: color-mix(in srgb, var(--accent, #136ce9) 78%, #000); }
.pb-card-tel svg { flex-shrink: 0; width: 18px; height: 18px; }

.pb-card-note {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.55;
    word-break: break-word;
}

/* 信息行（官网/邮箱/地址） */
.pb-card-line {
    display: flex;
    align-items: center;
    gap: 6px;
    min-width: 0;
    font-size: 12px;
    line-height: 1.5;
}
.pb-card-line + .pb-card-line { margin-top: -2px; }
.pb-card-mail {
    display: inline-flex; align-items: center; gap: 5px;
    font-size: 12px;
    color: var(--accent, #136ce9);
    text-decoration: none;
    word-break: break-all;
    min-width: 0;
}
.pb-card-mail:hover { text-decoration: underline; }
.pb-card-web {
    display: inline-flex; align-items: center; gap: 5px;
    font-size: 12px;
    color: #0a9a5c;
    text-decoration: none;
    word-break: break-all;
    min-width: 0;
}
.pb-card-web:hover { text-decoration: underline; color: #077a47; }
.pb-card-addr {
    display: inline-flex; align-items: flex-start; gap: 5px;
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.5;
    word-break: break-all;
    min-width: 0;
}
.pb-card-ico { flex-shrink: 0; font-style: normal; opacity: .85; }

/* 卡片操作按钮 */
.pb-card-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: auto;
    padding-top: 6px;
    border-top: 1px dashed color-mix(in srgb, var(--border-color) 80%, transparent);
}
.pb-tel {
    flex: 1 1 auto; min-width: 0;
    display: inline-flex; align-items: center; justify-content: center; gap: 7px;
    padding: 9px 14px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--accent, #136ce9), #5b5cf0);
    color: #fff;
    font-size: 13.5px; font-weight: 700;
    text-decoration: none;
    letter-spacing: .3px;
    transition: opacity .15s, transform .15s, box-shadow .15s;
    box-shadow: 0 4px 12px color-mix(in srgb, var(--accent, #136ce9) 26%, transparent);
}
.pb-tel:hover { opacity: .92; color: #fff; transform: translateY(-1px); box-shadow: 0 6px 16px color-mix(in srgb, var(--accent, #136ce9) 34%, transparent); }
.pb-tel svg { width: 15px; height: 15px; flex-shrink: 0; }
.pb-icon-btn {
    flex: 0 0 auto;
    display: inline-flex; align-items: center; justify-content: center;
    width: 38px; height: 38px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    background: var(--bg-primary);
    color: var(--text-secondary);
    cursor: pointer;
    transition: color .15s, border-color .15s, background .15s, transform .15s;
}
.pb-icon-btn:hover {
    color: var(--accent, #136ce9);
    border-color: var(--accent, #136ce9);
    background: color-mix(in srgb, var(--accent, #136ce9) 9%, transparent);
    transform: translateY(-1px);
}
.pb-icon-btn svg { width: 16px; height: 16px; }

.pb-badge {
    flex: 0 0 auto;
    font-size: 10px;
    padding: 2px 8px;
    border-radius: 999px;
    background: color-mix(in srgb, var(--accent, #136ce9) 12%, transparent);
    color: var(--accent, #136ce9);
    font-weight: 600;
    white-space: nowrap;
}

/* 搜索结果高亮 */
.pb-card mark {
    background: color-mix(in srgb, #ffd54a 42%, transparent);
    color: inherit;
    border-radius: 3px;
    padding: 0 1px;
}

/* ============================================================
 * 瀑布流加载哨兵（按需加载指示器）
 * ============================================================ */
.pb-sentinel {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 26px 0 8px;
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 600;
}
.pb-sentinel[hidden] { display: none; }
.pb-spinner {
    width: 18px; height: 18px;
    border: 2.5px solid color-mix(in srgb, var(--accent, #136ce9) 28%, transparent);
    border-top-color: var(--accent, #136ce9);
    border-radius: 50%;
    animation: pbSpin .7s linear infinite;
}
@keyframes pbSpin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) {
    .pb-spinner { animation: none; }
}

/* ============================================================
 * 空状态
 * ============================================================ */
.pb-empty {
    text-align: center;
    padding: clamp(48px, 8vw, 80px) 20px;
    color: var(--text-secondary);
}
.pb-empty-icon {
    font-size: 44px;
    margin-bottom: 14px;
    display: inline-block;
    animation: pbFloat 2.6s ease-in-out infinite;
}
@keyframes pbFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}
.pb-empty p { margin: 0 0 18px; font-size: 15px; color: var(--text-primary); }
.pb-btn {
    padding: 10px 26px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 14px;
    cursor: pointer;
    transition: border-color .15s, color .15s, transform .15s;
}
.pb-btn:hover {
    border-color: var(--accent, #136ce9);
    color: var(--accent, #136ce9);
    transform: translateY(-1px);
}

/* ============================================================
 * 页脚提示
 * ============================================================ */
.pb-foot {
    border-top: 1px solid var(--border-color);
    padding: 20px 0 0;
    margin-top: 10px;
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.8;
}
.pb-foot b { color: var(--text-primary); }

/* ============================================================
 * 回到顶部
 * ============================================================ */
.pb-back-top {
    position: fixed;
    right: clamp(16px, 2vw, 28px);
    bottom: clamp(24px, 4vh, 40px);
    width: 44px; height: 44px;
    border-radius: 14px;
    border: 1px solid var(--border-color);
    background: color-mix(in srgb, var(--bg-primary) 88%, transparent);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    color: var(--text-primary);
    font-size: 18px;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: opacity .2s, transform .2s, visibility .2s, color .15s, border-color .15s;
    box-shadow: 0 6px 18px color-mix(in srgb, #000 10%, transparent);
    z-index: 999;
}
.pb-back-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.pb-back-top:hover {
    color: var(--accent, #136ce9);
    border-color: var(--accent, #136ce9);
    transform: translateY(-2px);
}
.pb-back-top.show:hover { transform: translateY(-2px); }

/* ============================================================
 * 提示条
 * ============================================================ */
.pb-toast {
    position: fixed;
    left: 50%; bottom: 48px;
    transform: translateX(-50%) translateY(12px);
    background: color-mix(in srgb, #111827 92%, transparent);
    backdrop-filter: blur(8px);
    color: #fff;
    font-size: 13px;
    padding: 10px 20px;
    border-radius: 999px;
    opacity: 0;
    visibility: hidden;
    transition: opacity .2s, transform .2s, visibility .2s;
    z-index: 1000;
    max-width: 90vw;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    box-shadow: 0 8px 24px rgba(0, 0, 0, .2);
}
.pb-toast.show { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }

/* ============================================================
 * 电脑端（≥1280 四列）
 * ============================================================ */
@media (min-width: 1280px) {
    .pb-grid { column-count: 4; }
    .pb-hot { grid-template-columns: repeat(10, 1fr); }
    .pb-hot-item { flex-direction: column; gap: 3px; padding: 12px 8px; }
}

/* ============================================================
 * 平板（768–1279）
 * ============================================================ */
@media (min-width: 768px) and (max-width: 1279px) {
    .pb-grid { column-count: 2; }
    .pb-hot { grid-template-columns: repeat(5, 1fr); }
}

/* 平板及以下：分类横向滚动 */
@media (max-width: 1279px) {
    .pb-cats {
        flex-wrap: nowrap;
        overflow-x: auto;
        padding-bottom: 8px;
        margin-bottom: -8px;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        scroll-snap-type: x proximity;
    }
    .pb-cats::-webkit-scrollbar { display: none; }
    .pb-cat {
        flex: 0 0 auto;
        scroll-snap-align: start;
    }
}

/* ============================================================
 * 手机（<768）单列
 * ============================================================ */
@media (max-width: 767px) {
    .pb-page { padding: 0 12px 48px; }
    .pb-hero { padding: 14px 0 14px; }
    .pb-hero-inner { padding: 20px 16px 16px; border-radius: 16px; }

    .pb-brand-text h1 { font-size: 19px; }
    .pb-brand-text p { font-size: 11.5px; }
    .pb-search-input { font-size: 16px; } /* 防 iOS 聚焦缩放 */
    .pb-search { padding: 11px 14px; }

    /* 分类栏吸顶 */
    .pb-cats-wrap {
        position: sticky;
        top: 0;
        margin: 0 -12px;
        padding: 8px 12px 12px;
    }
    .pb-cat { font-size: 12.5px; padding: 7px 13px; }

    .pb-grid { column-count: 1; gap: 12px; }
    .pb-card { padding: 14px 15px; border-radius: 14px; }
    .pb-card-name { font-size: 14.5px; }
    .pb-card-tel { font-size: 18px; }
    .pb-card-cat { max-width: 75%; }
    .pb-tel { padding: 11px 14px; font-size: 14px; }
    .pb-icon-btn { width: 42px; height: 42px; } /* 手机增大点击区 */
    .pb-icon-btn svg { width: 18px; height: 18px; }

    /* 快捷拨打 5 列 × 2 行 */
    .pb-hot { grid-template-columns: repeat(5, 1fr); gap: 7px; padding-bottom: 14px; }
    .pb-hot-item { flex-direction: column; gap: 2px; padding: 9px 4px; border-radius: 12px; }
    .pb-hot-num { font-size: 15px; }
    .pb-hot-name { font-size: 10.5px; }

    .pb-back-top { width: 40px; height: 40px; right: 14px; bottom: 20px; border-radius: 12px; }
    .pb-toast { bottom: 28px; max-width: 88vw; }
    .pb-section-head { padding: 10px 0 12px; }
}

/* 手机窄屏（<700px，站点头部 mobile-header 吸顶高约 53px）分类栏避开头部 */
@media (max-width: 700px) {
    .pb-cats-wrap { top: 53px; }
}

/* ============================================================
 * 减少动效偏好
 * ============================================================ */
@media (prefers-reduced-motion: reduce) {
    .pb-card, .pb-hot-item, .pb-cat, .pb-icon-btn, .pb-tel, .pb-back-top, .pb-empty-icon {
        transition: none;
        animation: none;
    }
    .pb-empty-icon { animation: none; }
}