/* ========== 英语词典站 - 公共样式 ========== */

:root {
    --primary-color: #1F69E0;
    --primary-hover: #1858B8;
    --primary-light: #EBF3FC;
    --bg-light: #F5F7FA;
    --text-muted: #888;
    --text-dark: #333;
    --border-color: #e5e5e5;
    --card-bg: #fff;
    --card-shadow: 0 1px 3px rgba(0,0,0,.06);
    --accent: #F5A623;
}

/* 通用 */
body { font-family: "PingFang SC","Hiragino Sans GB","Microsoft YaHei","WenQuanYi Micro Hei",sans-serif; background: var(--bg-light); color: var(--text-dark); }
a { color: var(--primary-color); text-decoration: none; }
a:hover { color: var(--primary-hover); text-decoration: underline; }

/* 导航栏 */
.navbar { box-shadow: 0 1px 4px rgba(0,0,0,.06); background: var(--card-bg); }
.nav-link { color: #555 !important; font-weight: 500; }
.nav-link:hover, .nav-link.active { color: var(--primary-color) !important; }

/* 卡片 */
.card { border: none; box-shadow: var(--card-shadow); border-radius: .75rem; margin-bottom: 1rem; background: var(--card-bg); }
.card-header { background: var(--card-bg); border-bottom: 1px solid var(--border-color); font-weight: 700; font-size: 1.05rem; padding: .75rem 1rem; }
.card-body { padding: 1.25rem; overflow-wrap: break-word; word-break: break-word; }

/* 搜索区 */
.hero-search { background: linear-gradient(135deg, #1F69E0 0%, #3B8AEA 50%, #67BCDA 100%); border-radius: .75rem; padding: 3rem 1.5rem; color: #fff; }
.hero-search h1 { font-size: 1.8rem; font-weight: 700; }
.hero-search .form-control { height: 48px; border: none; font-size: 1.05rem; }
.hero-search .btn-search { height: 48px; background: var(--accent); border: none; color: #fff; font-weight: 600; }
.hero-search .btn-search:hover { background: #E09510; }
.hero-search .nav-tabs { border-bottom: none; }
.hero-search .nav-tabs .nav-link { color: rgba(255,255,255,.7); border: none; border-radius: .5rem .5rem 0 0; font-weight: 500; padding: .5rem 1.2rem; }
.hero-search .nav-tabs .nav-link.active { color: #fff; background: rgba(255,255,255,.15); }

/* 字母导航 */
.letter-nav { display: flex; flex-wrap: wrap; gap: .4rem; justify-content: center; }
.letter-nav a, .letter-nav span { display: inline-flex; align-items: center; justify-content: center; width: 38px; height: 38px; border: 1px solid var(--border-color); border-radius: .5rem; font-weight: 600; background: var(--card-bg); transition: all .15s; font-size: .95rem; }
.letter-nav a { color: var(--text-dark); }
.letter-nav a:hover { background: var(--primary-color); color: #fff; border-color: var(--primary-color); text-decoration: none; }
.letter-nav a.current { background: var(--primary-color); color: #fff; border-color: var(--primary-color); }
.letter-nav span.empty { color: #ccc; }

/* 单词项 */
.word-item { border-bottom: 1px solid var(--border-color); padding: .75rem 0; overflow-wrap: break-word; }
.word-item:last-child { border-bottom: none; }
.word-item .word-line { display: flex; align-items: center; gap: .5rem; flex-wrap: wrap; margin-bottom: .3rem; }
.word-item .word-text { font-size: 1.15rem; font-weight: 700; color: var(--primary-color); white-space: nowrap; flex-shrink: 0; }
.word-item .phonetic { font-size: .85rem; color: var(--text-muted); white-space: nowrap; }
.word-item .cx-badge { display: inline-block; max-width: 200px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; vertical-align: middle; font-size: .75rem; padding: .2rem .5rem; background: #f8f9fa; color: #555; border-radius: .25rem; }
.word-item .meaning { font-size: .9rem; color: var(--text-dark); line-height: 1.6; overflow-wrap: break-word; word-break: break-word; }

/* 缩写项 */
.abbr-item { border-bottom: 1px solid var(--border-color); padding: .6rem 0; overflow-wrap: break-word; }
.abbr-item:last-child { border-bottom: none; }
.abbr-item .abbr-text { font-weight: 700; color: var(--primary-color); margin-right: .5rem; font-size: 1.05rem; white-space: nowrap; }
.abbr-item .full-text { font-size: .9rem; color: var(--text-dark); overflow-wrap: break-word; word-break: break-word; }
.abbr-item .prc-text { font-size: .85rem; color: var(--text-muted); overflow-wrap: break-word; word-break: break-word; }

/* 场景例句单词标签 */
.scene-word-tag { display: inline-block; padding: .25rem .7rem; border: 1px solid var(--border-color); color: var(--text-dark); background: var(--card-bg); border-radius: 1rem; font-size: .85rem; margin: .2rem; transition: all .15s; font-weight: 500; }
.scene-word-tag:hover { background: var(--primary-color); color: #fff; border-color: var(--primary-color); text-decoration: none; }

/* 每日场景例句 */
.daily-scene-word { margin-bottom: .5rem; }
.daily-scene-word .word-text { font-size: 1.3rem; }
.daily-scene-sentence { margin-top: .6rem; padding: .6rem .8rem; background: var(--primary-light); border-radius: .5rem; border-left: 3px solid var(--primary-color); }

/* 分类导航（考试等级） */
.cat-nav { display: flex; flex-wrap: wrap; gap: .5rem; }
.cat-tag { display: inline-flex; align-items: center; padding: .4rem .9rem; border: 1px solid var(--border-color); color: var(--text-dark); background: var(--card-bg); border-radius: 1.25rem; font-size: .9rem; transition: all .15s; font-weight: 500; text-decoration: none; }
.cat-tag:hover { background: var(--primary-color); color: #fff; border-color: var(--primary-color); text-decoration: none; }
.cat-tag.active { background: var(--primary-color); color: #fff; border-color: var(--primary-color); }
.cat-tag .cat-count { margin-left: .4rem; font-size: .75rem; background: rgba(255,255,255,.3); padding: .1rem .4rem; border-radius: .75rem; }
.cat-tag:not(.active) .cat-count { background: var(--primary-light); color: var(--primary-color); }

/* 分类概览卡片 */
.cat-card { transition: all .2s; }
.cat-card:hover { box-shadow: 0 4px 12px rgba(31,105,224,.1); transform: translateY(-2px); }

/* 分类标签 */
.category-tag { display: inline-block; padding: .35rem .9rem; border: 1px solid var(--border-color); color: #555; background: var(--card-bg); border-radius: 1.25rem; font-size: .85rem; margin: .2rem; transition: all .15s; }
.category-tag:hover { background: var(--primary-color); color: #fff; border-color: var(--primary-color); text-decoration: none; }
.category-badge { display: inline-block; padding: .3rem .8rem; background: var(--primary-light); color: var(--primary-color); border-radius: 1.25rem; font-size: .85rem; font-weight: 600; }

/* 侧边栏 */
.sidebar-card .list-group-item { border: none; padding: .5rem .75rem; font-size: .9rem; background: var(--card-bg); }
.sidebar-card .list-group-item a { color: #555; }
.sidebar-card .list-group-item a:hover { color: var(--primary-color); }
.stat-badge { display: inline-block; padding: .3rem .8rem; background: var(--primary-light); color: var(--primary-color); border-radius: .5rem; font-size: .85rem; font-weight: 600; }

/* 搜索框 */
.search-box { background: var(--primary-light); border: 1px solid var(--border-color); border-radius: .75rem; padding: 1.5rem; margin-bottom: 1.5rem; }

/* 发音按钮 */
.speak-btn { display: inline-flex; align-items: center; justify-content: center; width: 22px; height: 22px; border: none; background: none; color: var(--primary-color); cursor: pointer; padding: 0; border-radius: 50%; transition: all .15s; font-size: .8rem; vertical-align: middle; margin-left: 2px; }
.speak-btn:hover { background: var(--primary-light); color: var(--primary-hover); }
.speak-btn.playing { color: var(--accent); animation: speak-pulse .6s ease-in-out; }
@keyframes speak-pulse { 0%,100% { transform: scale(1); } 50% { transform: scale(1.3); } }

/* 单词详情页 */
.word-title { font-size: 2.5rem; font-weight: 800; color: var(--primary-color); margin-bottom: .5rem; }
.phonetic-detail { font-size: 1.1rem; color: var(--text-muted); margin-bottom: .5rem; }
.phonetic-detail .label { font-weight: 600; color: var(--text-dark); font-size: .85rem; }
.pos-tag { display: inline-block; padding: .2rem .7rem; background: var(--primary-light); color: var(--primary-color); border-radius: .375rem; font-size: .85rem; font-weight: 600; margin-right: .3rem; }
.word-section { margin-bottom: 1.5rem; }
.word-section h2 { font-size: 1.05rem; color: var(--primary-color); border-left: 3px solid var(--primary-color); padding-left: .75rem; margin-bottom: .75rem; }
.word-section .section-body { line-height: 1.9; overflow-wrap: break-word; word-break: break-word; }
.word-section .section-body p { margin-bottom: .5rem; }
.related-word { display: inline-block; padding: .3rem .8rem; border: 1px solid var(--border-color); border-radius: .5rem; margin: .2rem; color: var(--text-dark); font-size: .9rem; transition: all .15s; }
.related-word:hover { background: var(--primary-color); color: #fff; border-color: var(--primary-color); text-decoration: none; }

/* 缩写详情页 */
.abbr-title { font-size: 2.5rem; font-weight: 800; color: var(--primary-color); margin-bottom: .5rem; letter-spacing: 2px; }
.abbr-full { font-size: 1.2rem; color: var(--text-dark); margin-bottom: .5rem; overflow-wrap: break-word; word-break: break-word; }
.abbr-prc { font-size: 1.1rem; color: var(--text-muted); margin-bottom: 1rem; overflow-wrap: break-word; word-break: break-word; }
.info-table { width: 100%; table-layout: fixed; }
.info-table td { padding: .6rem .75rem; border-bottom: 1px solid var(--border-color); font-size: .9rem; overflow-wrap: break-word; word-break: break-word; }
.info-table td:first-child { font-weight: 600; color: var(--text-muted); width: 120px; white-space: nowrap; }
.related-item { display: inline-block; padding: .3rem .8rem; border: 1px solid var(--border-color); border-radius: .5rem; margin: .2rem; color: var(--text-dark); font-size: .9rem; transition: all .15s; }
.related-item:hover { background: var(--primary-color); color: #fff; border-color: var(--primary-color); text-decoration: none; }

/* 实用场景例句 */
.scene-group { margin-bottom: 1rem; }
.scene-group:last-child { margin-bottom: 0; }
.scene-label { display: inline-block; padding: .15rem .6rem; background: var(--primary-light); color: var(--primary-color); border-radius: .375rem; font-size: .8rem; font-weight: 600; margin-bottom: .5rem; }
.scene-item { padding: .4rem 0 .4rem .75rem; border-left: 2px solid var(--border-color); margin-bottom: .3rem; }
.scene-en { font-size: .95rem; color: var(--text-dark); line-height: 1.7; overflow-wrap: break-word; word-break: break-word; }
.scene-cn { font-size: .85rem; color: var(--text-muted); line-height: 1.6; overflow-wrap: break-word; word-break: break-word; }

/* 面包屑 */
.breadcrumb { background: transparent; padding: .5rem 0; margin-bottom: 0; font-size: .85rem; }
.breadcrumb-item a { color: var(--text-muted); }
.breadcrumb-item.active { color: var(--primary-color); }

/* 字母浏览列表 */
.word-row { display: flex; align-items: flex-start; padding: .6rem 0; border-bottom: 1px solid var(--border-color); }
.word-row:last-child { border-bottom: none; }
.word-row .word-text { font-size: 1.05rem; font-weight: 700; color: var(--primary-color); min-width: 120px; }
.word-row .phonetic { font-size: .8rem; color: var(--text-muted); }
.word-row .meaning { font-size: .85rem; color: var(--text-dark); line-height: 1.5; overflow-wrap: break-word; word-break: break-word; flex: 1; min-width: 0; }

/* 分类卡片 */
.category-card { text-align: center; padding: 1.2rem; border: 1px solid var(--border-color); border-radius: .75rem; transition: all .2s; cursor: pointer; }
.category-card:hover { border-color: var(--primary-color); box-shadow: 0 2px 8px rgba(31,105,224,.12); text-decoration: none; transform: translateY(-2px); }
.category-card .cat-name { font-weight: 700; font-size: 1rem; color: var(--text-dark); margin-bottom: .3rem; }
.category-card .cat-count { font-size: .85rem; color: var(--text-muted); }
.category-card:hover .cat-name { color: var(--primary-color); }

/* 搜索Tab */
.nav-tabs .nav-link { color: var(--text-muted); }
.nav-tabs .nav-link.active { color: var(--primary-color); font-weight: 600; }

/* 底部 */
footer { background: var(--card-bg); border-top: 1px solid var(--border-color); }

/* 词根词缀 */
.etymology-chain { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; margin-bottom: 12px; }
.etym-item { display: flex; align-items: center; gap: 6px; background: #f8f9fa; border-radius: 6px; padding: 6px 10px; }
.etym-badge { display: inline-block; color: #fff; font-size: .7rem; padding: 1px 6px; border-radius: 3px; line-height: 1.5; }
.etym-part-text { font-weight: 700; font-size: 1rem; }
.etym-meaning { font-size: .85rem; color: var(--text-muted); }
.etym-plus { color: var(--primary-color); font-weight: 700; font-size: 1.1rem; margin: 0 2px; }
.etym-summary { padding: 10px 14px; background: var(--bg-light); border-radius: 8px; font-size: .95rem; border-left: 3px solid var(--primary-color); }
.etym-part { display: inline-block; padding: 2px 8px; border: 1.5px solid; border-radius: 4px; font-weight: 600; font-size: .9rem; margin: 0 2px; }

/* 近义词与反义词列表页 */
.syn-ant-item { border-bottom: 1px solid var(--border-color); padding: .75rem 0; overflow-wrap: break-word; }
.syn-ant-item:last-child { border-bottom: none; }
.syn-ant-word-row { display: flex; align-items: center; gap: .5rem; flex-wrap: wrap; margin-bottom: .3rem; }
.syn-ant-meaning { font-size: .85rem; color: var(--text-muted); line-height: 1.5; margin-bottom: .4rem; overflow-wrap: break-word; word-break: break-word; }
.syn-ant-relations { line-height: 2; }

/* 近义词与反义词详情模块 */
.syn-ant-group:last-child { margin-bottom: 0; }
.syn-ant-label { display: inline-block; font-size: .8rem; font-weight: 600; padding: 2px 10px; border-radius: 12px; margin-right: .5rem; vertical-align: middle; }
.syn-label { background: #e8f5e9; color: #2e7d32; }
.ant-label { background: #fce4ec; color: #c62828; }
.syn-ant-words { display: inline; vertical-align: middle; }
.syn-ant-word { display: inline-block; padding: 3px 10px; margin: 3px 4px; border-radius: 16px; font-size: .88rem; text-decoration: none; transition: all .15s; }
.syn-word { background: #f1f8e9; color: #33691e; border: 1px solid #c5e1a5; }
.syn-word:hover { background: #dcedc8; color: #1b5e20; text-decoration: none; }
.ant-word { background: #fce4ec; color: #880e4f; border: 1px solid #f48fb1; }
.ant-word:hover { background: #f8bbd0; color: #b71c1c; text-decoration: none; }

/* 响应式 */
@media (max-width: 991.98px) {
    .navbar-collapse { position: absolute; top: 100%; left: 0; right: 0; background: var(--card-bg); box-shadow: 0 4px 12px rgba(0,0,0,.08); z-index: 1030; border-top: 1px solid var(--border-color); }
    .navbar-collapse .nav-item { border-bottom: 1px solid var(--border-color); }
    .navbar-collapse .nav-link { padding: .75rem 1rem; }
    .hero-search { padding: 2rem 1rem; }
    .hero-search h1 { font-size: 1.3rem; }
    .word-title { font-size: 1.8rem; }
    .abbr-title { font-size: 1.8rem; }
    .word-row { flex-direction: column; }
    .word-row .word-text { min-width: auto; }
}