/* =====================================================================
   Trang Xep hang (/rank) - dung chung PC va mobile.

   .rk     : khung chung (PC)
   .rk-m   : ghi de rieng cho mobile

   Mau di qua bien cuc bo nhu message.css / booklist.css, KHONG dua vao ban
   do mau tu sinh cua theme.css (ban do do doc tu style.css, khong biet gi ve
   cac lop o day).
   ===================================================================== */

.rk {
    --rk-bg:      #fff;
    --rk-soft:    #f6f7f9;
    --rk-line:    #eceef1;
    --rk-text:    #1f2126;
    --rk-dim:     #6b7078;
    --rk-mute:    #9aa0a6;
    --rk-accent:  #fd113a;
    --rk-ok:      #16a34a;
    --rk-up:      #16a34a;
    --rk-down:    #dc2626;
    --rk-tab-on:  #fd113a;
    color: var(--rk-text);
}

html[data-theme="dark"] .rk {
    --rk-bg:      #17181c;
    --rk-soft:    #1e2026;
    --rk-line:    #2a2d35;
    --rk-text:    #e6e7ea;
    --rk-dim:     #9aa0a6;
    --rk-mute:    #6b7078;
    --rk-accent:  #ff5f8f;
    --rk-ok:      #34d399;
    --rk-up:      #34d399;
    --rk-down:    #f87171;
    --rk-tab-on:  #ff3f60;
}

.rk-wrap { padding: 24px 0 48px; }

.rk-head { margin-bottom: 14px; }
.rk-h1 { margin: 0; font-size: 24px; font-weight: 700; line-height: 1.3; color: var(--rk-text); }
.rk-sub { margin: 4px 0 0; font-size: 13px; color: var(--rk-dim); }

/* Chi danh cho trinh doc man hinh / bo tim kiem (h1 ban mobile). */
.rk-sr {
    position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0, 0, 0, 0); border: 0;
}

/* ---------------------------------------------------------------- TAB */

.rk-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 0 0 20px;
}
.rk-tab {
    display: inline-block;
    padding: 7px 16px;
    border: 1px solid var(--rk-line);
    border-radius: 999px;
    background: var(--rk-soft);
    color: var(--rk-text);
    font-size: 14px;
    line-height: 1.3;
    text-decoration: none;
    white-space: nowrap;
}
.rk-tab:hover { color: var(--rk-accent); border-color: var(--rk-accent); }
.rk-tab.is-on,
.rk-tab.is-on:hover { background: var(--rk-tab-on); border-color: var(--rk-tab-on); color: #fff; font-weight: 600; }
.rk-tab:focus-visible { outline: 2px solid var(--rk-accent); outline-offset: 2px; }

/* ----------------------------------------------------- TRENDING HOM NAY */

.rk-trend {
    margin: 0 0 24px;
    padding: 16px;
    border-radius: 10px;
    background: linear-gradient(135deg, #1a1a2e, #16213e 55%, #0f3460);
    color: #fff;
}
.rk-trend-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 12px; }
.rk-trend-head h2 { margin: 0; font-size: 18px; color: #ffd166; }
.rk-trend-head a { font-size: 13px; color: rgba(255, 255, 255, .75); }
.rk-trend-head a:hover { color: #fff; }

.rk-trend-list {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 14px;
    margin: 0; padding: 0; list-style: none;
}
.rk-trend-list li { min-width: 0; }
.rk-trend-list a { display: block; color: #fff; text-decoration: none; }
.rk-trend-cover { position: relative; display: block; border-radius: 6px; overflow: hidden; aspect-ratio: 3 / 4; background: #0b1020; }
.rk-trend-cover img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .2s; }
.rk-trend-list a:hover img { transform: scale(1.04); }
.rk-trend-name { display: block; margin-top: 8px; font-size: 13px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.rk-trend-meta { display: block; margin-top: 2px; font-size: 11px; color: rgba(255, 255, 255, .6); }

.rk-medal {
    position: absolute; top: 6px; left: 6px;
    min-width: 24px; height: 24px; padding: 0 6px;
    border-radius: 12px; background: rgba(0, 0, 0, .65);
    font-size: 12px; line-height: 24px; text-align: center; color: #fff;
}
.rk-medal.rk-m1 { background: #f5b301; color: #3a2a00; }
.rk-medal.rk-m2 { background: #c0c6cf; color: #1f2937; }
.rk-medal.rk-m3 { background: #d08b4c; color: #2a1606; }

/* -------------------------------------------------------------- DANH SACH */

.rk-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 28px;
    margin: 0; padding: 0; list-style: none;
}

.rk-item {
    position: relative;
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--rk-line);
}

.rk-no {
    flex: 0 0 30px;
    padding-top: 30px;
    font-size: 18px; font-weight: 700; line-height: 1;
    text-align: center; color: var(--rk-mute);
}
.rk-no.rk-n1 { color: #f5b301; font-size: 22px; }
.rk-no.rk-n2 { color: #9aa3ae; font-size: 22px; }
.rk-no.rk-n3 { color: #d08b4c; font-size: 22px; }

.rk-cover { position: relative; flex: 0 0 72px; display: block; border-radius: 6px; overflow: hidden; background: var(--rk-soft); }
.rk-cover img { display: block; width: 72px; height: 96px; object-fit: cover; }
.rk-done {
    position: absolute; left: 0; bottom: 0; right: 0;
    padding: 1px 0; background: rgba(22, 133, 72, .9);
    color: #fff; font-size: 10px; font-style: normal; font-weight: 700; text-align: center;
}

.rk-info { flex: 1 1 auto; min-width: 0; padding-right: 52px; }
.rk-name { margin: 2px 0 6px; font-size: 15px; font-weight: 600; line-height: 1.35; }
.rk-name a { color: var(--rk-text); display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.rk-name a:hover { color: var(--rk-accent); }

.rk-meta, .rk-last, .rk-tags { margin: 0 0 4px; font-size: 12px; color: var(--rk-dim); line-height: 1.5; }
.rk-meta span + span:before { content: '·'; margin: 0 6px; color: var(--rk-mute); }
.rk-views { color: var(--rk-accent); font-weight: 600; }
.rk-ok { color: var(--rk-ok); }

.rk-last { display: flex; gap: 8px; }
.rk-last-ch { min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; color: var(--rk-text); }
.rk-last-t { flex: 0 0 auto; color: var(--rk-mute); }

.rk-tags a {
    display: inline-block; margin: 2px 4px 0 0; padding: 1px 8px;
    border-radius: 999px; background: var(--rk-soft); border: 1px solid var(--rk-line);
    font-size: 11px; color: var(--rk-dim);
}
.rk-tags a:hover { color: var(--rk-accent); border-color: var(--rk-accent); }

.rk-trendmark {
    position: absolute; top: 14px; right: 0;
    font-size: 11px; font-weight: 700; white-space: nowrap;
}
.rk-trendmark.is-up   { color: var(--rk-up); }
.rk-trendmark.is-down { color: var(--rk-down); }
.rk-trendmark.is-new  { padding: 1px 6px; border-radius: 4px; background: var(--rk-accent); color: #fff; font-size: 10px; }

.rk-none { padding: 48px 12px; text-align: center; font-size: 14px; color: var(--rk-dim); }

/* ================================================================ MOBILE */

.rk-m { padding: 45px 0 20px; background: var(--rk-bg); }

/* Dinh ngay duoi header 45px cua top2.html. Cuon ngang, khong xuong dong:
   bay tab khong vua mot man hinh 390px. */
.rk-m .rk-tabs {
    position: sticky; top: 45px; z-index: 20;
    flex-wrap: nowrap; overflow-x: auto; -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    margin: 0; padding: 10px 12px; gap: 6px;
    background: var(--rk-bg); border-bottom: 1px solid var(--rk-line);
}
.rk-m .rk-tabs::-webkit-scrollbar { display: none; }
.rk-m .rk-tab { padding: 6px 13px; font-size: 13px; }
.rk-m .rk-sub { padding: 10px 12px 0; }

.rk-m .rk-trend { margin: 10px 12px 6px; padding: 12px; border-radius: 10px; }
.rk-m .rk-trend-head h2 { font-size: 16px; }
/* Cuon ngang 5 bia thay vi ep 5 cot vao 390px. */
.rk-m .rk-trend-list {
    display: flex; gap: 10px; overflow-x: auto; scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
}
.rk-m .rk-trend-list::-webkit-scrollbar { display: none; }
.rk-m .rk-trend-list li {
    flex: 0 0 104px;
    /* BAT BUOC. Flex item mac dinh min-width: auto = rong bang min-content,
       ma ten truyen dat nowrap nen min-content = CA CAU TEN. Ten dai lam o
       phinh ngang, va aspect-ratio 3/4 cua bia keo chieu cao theo: do duoc
       bia cao 139px voi ten ngan va 404px voi ten dai trong cung mot hang. */
    min-width: 0;
    width: 104px;
}
.rk-m .rk-trend-name { font-size: 12px; }

.rk-m .rk-list { display: block; padding: 0 12px; }
.rk-m .rk-item { gap: 10px; padding: 10px 0; }
.rk-m .rk-no { flex-basis: 24px; padding-top: 28px; font-size: 16px; }
.rk-m .rk-no.rk-n1, .rk-m .rk-no.rk-n2, .rk-m .rk-no.rk-n3 { font-size: 19px; }
.rk-m .rk-cover { flex-basis: 60px; }
.rk-m .rk-cover img { width: 60px; height: 80px; }
.rk-m .rk-info { padding-right: 38px; }
.rk-m .rk-name { font-size: 14px; margin-bottom: 4px; }
/* Mot dong cho meta tren mobile - "Hoan tat" tung bi day xuong dong rieng. */
.rk-m .rk-meta { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.rk-m .rk-trendmark { top: 12px; }

/* PC hep (duoi 1200px): mot cot cho de doc. */
@media (max-width: 1199px) {
    .rk:not(.rk-m) .rk-list { grid-template-columns: 1fr; }
}