/*!
 * IELTS Reading Studio — 重点词汇页样式
 * 作者 / Author: aliakata
 */

:root {
    --v-blue: #4d6bfe;
    --v-purple: #7048c8;
    --v-amber: #d99a1a;
    --v-amber-soft: #fff8e6;
    --v-line: #e7e9ee;
    --v-soft: #f7f8fc;
    --v-ink: #1b1f26;
    --v-ink-2: #4a5261;
    --v-ink-3: #8b93a2;
}

/* ---------------- 词表卡片列表 ---------------- */

.vocab-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 14px;
}

.vcard {
    background: #fff;
    border: 1px solid var(--v-line);
    border-radius: 14px;
    padding: 16px 18px;
    box-shadow: 0 1px 2px rgba(16, 24, 40, .03);
    transition: border-color .15s ease, box-shadow .15s ease, opacity .15s ease;
}

.vcard:hover {
    border-color: #cfd8ff;
    box-shadow: 0 8px 22px rgba(77, 107, 254, .08);
}

.vcard.is-known {
    opacity: .62;
    background: #fbfcfd;
}

.vcard-head {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 8px;
}

.vcard-index {
    font-size: 11.5px;
    font-weight: 700;
    color: #fff;
    background: var(--v-blue);
    border-radius: 999px;
    min-width: 22px;
    height: 22px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 6px;
}

.vcard-word {
    font-size: 19px;
    font-weight: 700;
    letter-spacing: -.2px;
    color: var(--v-ink);
}

.vcard-phonetic {
    font-size: 13px;
    color: var(--v-ink-3);
}

.vcard-meaning {
    font-size: 14px;
    line-height: 1.75;
    color: var(--v-ink-2);
}

.vcard-tags {
    display: flex;
    gap: 5px;
    flex-wrap: wrap;
    margin-top: 8px;
}

.vtag {
    font-size: 10.5px;
    font-weight: 700;
    letter-spacing: .3px;
    border-radius: 999px;
    padding: 2px 8px;
    background: #eef1f6;
    color: #6b7280;
}

.vtag-ielts { background: #eef1ff; color: var(--v-blue); }
.vtag-toefl { background: #eaf3ff; color: #1d6fd0; }
.vtag-gre { background: #f3edff; color: var(--v-purple); }
.vtag-cet6, .vtag-cet4 { background: #eef7f1; color: #0f9d6e; }

.vcard-example {
    margin-top: 10px;
    padding: 9px 12px;
    background: var(--v-soft);
    border-left: 3px solid #cfd8ff;
    border-radius: 0 8px 8px 0;
    font-size: 13px;
    line-height: 1.7;
    color: #3a4450;
}

.vcard-example b { color: var(--v-ink-3); font-weight: 600; }

.vcard-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 10px;
}

.vcard-count {
    font-size: 12px;
    color: var(--v-ink-3);
    margin-left: auto;
}

.vbtn {
    cursor: pointer;
    font-family: inherit;
    font-size: 12.5px;
    font-weight: 600;
    color: var(--v-ink-2);
    background: #fff;
    border: 1px solid var(--v-line);
    border-radius: 9px;
    padding: 5px 11px;
    transition: all .14s ease;
}

.vbtn:hover {
    color: var(--v-blue);
    border-color: #cfd8ff;
    background: #f6f8ff;
}

.vbtn-known.active {
    color: #0f9d6e;
    border-color: #bfe6d7;
    background: #e8f7f1;
}

.vbtn-speak-inline {
    padding: 1px 7px;
    font-size: 12px;
}

.vempty, .vdone {
    grid-column: 1 / -1;
    text-align: center;
    color: var(--v-ink-3);
    font-size: 13.5px;
    padding: 28px 20px;
    background: #fff;
    border: 1px dashed var(--v-line);
    border-radius: 14px;
}

/* ---------------- 抽查背诵 ---------------- */

.vquiz {
    background: #fff;
    border: 1px solid var(--v-line);
    border-radius: 16px;
    padding: 26px 28px;
    max-width: 780px;
    box-shadow: 0 1px 2px rgba(16, 24, 40, .04);
}

.vquiz-progress {
    font-size: 12.5px;
    color: var(--v-ink-3);
    font-variant-numeric: tabular-nums;
    margin-bottom: 14px;
}

.vquiz-word {
    font-size: 40px;
    font-weight: 700;
    letter-spacing: -1px;
    color: var(--v-ink);
    line-height: 1.15;
}

.vquiz-phonetic {
    font-size: 15px;
    color: var(--v-ink-3);
    margin-top: 6px;
}

.vquiz-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin: 20px 0 4px;
}

.vquiz-answer {
    margin-top: 18px;
    padding-top: 16px;
    border-top: 1px dashed var(--v-line);
    display: flex;
    flex-direction: column;
    gap: 10px;
}

/* ---------------- 词表目录 ---------------- */

.vocab-index-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 14px;
    margin-bottom: 20px;
}

.vindex-card {
    display: flex;
    flex-direction: column;
    gap: 6px;
    background: #fff;
    border: 1px solid var(--v-line);
    border-radius: 14px;
    padding: 16px 18px;
    text-decoration: none;
    color: inherit;
    transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
}

.vindex-card:hover {
    transform: translateY(-2px);
    border-color: var(--v-amber);
    box-shadow: 0 10px 26px rgba(217, 154, 26, .14);
}

.vindex-top {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 11.5px;
    color: var(--v-ink-3);
}

.vindex-meta { color: var(--v-ink-3); }

.vindex-title {
    font-size: 15px;
    font-weight: 600;
    line-height: 1.45;
    color: var(--v-ink);
}

.vindex-zh {
    font-size: 12.5px;
    color: var(--v-ink-3);
    flex: 1;
}

.vindex-bottom {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 4px;
}

.vindex-words {
    font-size: 12px;
    color: var(--v-amber);
    font-weight: 600;
}

.vindex-enter {
    font-size: 12.5px;
    font-weight: 600;
    color: var(--v-amber);
}

/* ---------------- 首页入口卡片（误入奇境 / 不期而遇） ---------------- */

.feature-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 14px;
    margin-bottom: 20px;
}

.feature-card {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 6px;
    border-radius: var(--radius, 16px);
    padding: 18px 20px;
    text-decoration: none;
    color: #fff;
    overflow: hidden;
    box-shadow: 0 10px 24px rgba(16, 24, 40, .12);
    transition: transform .16s ease, box-shadow .16s ease;
    cursor: pointer;
    border: none;
    text-align: left;
    font-family: inherit;
}

.feature-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 32px rgba(16, 24, 40, .18);
}

.feature-card.feature-random {
    background: linear-gradient(135deg, #5b78ff, #3b56e0);
}

.feature-card.feature-vocab {
    background: linear-gradient(135deg, #f0b429, #d98b0f);
}

.feature-card-top {
    display: flex;
    align-items: center;
    gap: 10px;
}

.feature-card-name {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -.2px;
}

.feature-card-icon {
    font-size: 20px;
    line-height: 1;
}

.feature-card-desc {
    font-size: 12.5px;
    opacity: .92;
    line-height: 1.6;
}

.feature-card-foot {
    margin-top: 6px;
    font-size: 12px;
    font-weight: 600;
    opacity: .96;
    display: flex;
    align-items: center;
    gap: 6px;
}

.feature-card-foot .arrow {
    transition: transform .15s ease;
}

.feature-card:hover .feature-card-foot .arrow {
    transform: translateX(3px);
}

@media (max-width: 900px) {
    .vocab-list, .vocab-index-grid { grid-template-columns: 1fr; }
    .vquiz { padding: 20px; }
    .vquiz-word { font-size: 32px; }
}