/* =========================================================
   MARKS.CSS – Đợt 2 (Nhóm 3): Công cụ ghi nhớ nội dung
   Highlight 4 màu · Gạch chân · Ghi chú · Bookmark lề trái
   Popup khi bôi đen · Popup khi bấm đánh dấu · Ngăn kéo xem lại
   Đếm số lượng ở sidebar. Toàn bộ class prefix rd-.
   ========================================================= */

/* ---------- biến màu highlight (mặc định: nền sáng vàng pastel) ---------- */
:root{
  --rd-hl-yellow:#fde68a;
  --rd-hl-green:#bbf7d0;
  --rd-hl-pink:#fbcfe8;
  --rd-hl-purple:#ddd6fe;
  --rd-hl-ink:#2a2418;          /* chữ trên nền highlight: luôn tối cho dễ đọc */
  --rd-underline:#e08a1e;       /* màu gạch chân */
}
/* highlight đậm hơn chút ở theme tối để nổi trên nền sẫm */
body[data-theme="dark"]{
  --rd-hl-yellow:#f6d873;
  --rd-hl-green:#9ff0bd;
  --rd-hl-pink:#f7bcdf;
  --rd-hl-purple:#cabdfb;
  --rd-underline:#fbbf24;
}

/* ===================== ĐÁNH DẤU TRONG VĂN BẢN ===================== */
.rd-mark{
  border-radius:3px;
  box-decoration-break:clone;-webkit-box-decoration-break:clone;
  cursor:pointer;transition:filter .12s;
}
.rd-mark:hover{filter:brightness(.96) saturate(1.05)}
.rd-mark.hl-yellow{background:var(--rd-hl-yellow);color:var(--rd-hl-ink);padding:.5px 1px}
.rd-mark.hl-green{background:var(--rd-hl-green);color:var(--rd-hl-ink);padding:.5px 1px}
.rd-mark.hl-pink{background:var(--rd-hl-pink);color:var(--rd-hl-ink);padding:.5px 1px}
.rd-mark.hl-purple{background:var(--rd-hl-purple);color:var(--rd-hl-ink);padding:.5px 1px}
/* gạch chân (có thể đi kèm màu hoặc đứng riêng) */
.rd-mark.rd-underline{
  text-decoration:underline;text-decoration-color:var(--rd-underline);
  text-decoration-thickness:2px;text-underline-offset:3px;
}
/* ghi chú không có màu: gạch chân chấm cho thấy có đánh dấu */
.rd-mark.rd-noteonly{
  background:transparent;
  border-bottom:2px dotted var(--brand);
}

/* cờ ghi chú (✎) chèn sau đoạn có note – không thêm text vào dòng */
.rd-noteflag{
  display:inline-block;cursor:pointer;
  font-family:var(--font-sans);font-size:.72em;line-height:0;
  vertical-align:super;margin:0 1px 0 2px;
  color:var(--brand);user-select:none;
}
.rd-noteflag::before{content:"✎"}
.rd-noteflag:hover{color:var(--accent)}

/* ===================== BOOKMARK Ở LỀ TRÁI ĐOẠN ===================== */
.article p,.article li,.article blockquote,.article h2,.article h3,.article h4{position:relative}
.rd-bmpin{
  position:absolute;left:-30px;top:.15em;width:24px;height:24px;
  border:0;background:transparent;color:var(--brand);cursor:pointer;
  display:none;align-items:center;justify-content:center;padding:0;
  opacity:.45;transition:opacity .12s,transform .1s;
}
.rd-bmpin svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.rd-bmpin:hover{opacity:1;transform:scale(1.08)}
.rd-bmpin.is-on{display:flex;opacity:1;color:var(--accent)}
.rd-bmpin.is-on svg{fill:currentColor}
/* hiện nút ghim khi rê chuột vào đoạn (chỉ desktop có hover + đủ lề) */
@media(hover:hover) and (min-width:1100px){
  .article p:hover > .rd-bmpin,
  .article li:hover > .rd-bmpin,
  .article blockquote:hover > .rd-bmpin,
  .article h2:hover > .rd-bmpin,
  .article h3:hover > .rd-bmpin,
  .article h4:hover > .rd-bmpin{display:flex}
}
/* nhấp nháy khi nhảy tới bookmark/đánh dấu */
@keyframes rd-flash{0%{background:var(--brand-soft)}100%{background:transparent}}
.rd-flash{animation:rd-flash 1.6s ease-out}

/* ===================== POPUP KHI BÔI ĐEN ===================== */
.rd-selpop{
  position:absolute;z-index:78;display:none;gap:4px;align-items:center;
  padding:6px;border-radius:12px;background:var(--paper);color:var(--ink);
  border:1px solid var(--border);box-shadow:var(--shadow);font-family:var(--font-sans);
  transform:translateX(-50%);
}
.rd-selpop.show{display:flex}
.rd-selpop::after{ /* mũi nhọn xuống */
  content:"";position:absolute;left:50%;bottom:-7px;transform:translateX(-50%);
  border:7px solid transparent;border-top-color:var(--paper);filter:drop-shadow(0 1px 0 var(--border));
}
.rd-swatch{width:24px;height:24px;border-radius:50%;border:2px solid rgba(0,0,0,.12);cursor:pointer;padding:0}
.rd-swatch.hl-yellow{background:var(--rd-hl-yellow)}
.rd-swatch.hl-green{background:var(--rd-hl-green)}
.rd-swatch.hl-pink{background:var(--rd-hl-pink)}
.rd-swatch.hl-purple{background:var(--rd-hl-purple)}
.rd-swatch:hover{transform:scale(1.12)}
.rd-selpop .rd-sep{width:1px;height:24px;background:var(--border);margin:0 2px}
.rd-iconbtn{
  width:30px;height:30px;border-radius:8px;border:1px solid var(--border);background:transparent;
  color:var(--ink);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;
}
.rd-iconbtn:hover{background:var(--bg-2)}
.rd-iconbtn svg{width:17px;height:17px;stroke:currentColor;fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}

/* ===================== POPUP KHI BẤM 1 ĐÁNH DẤU ===================== */
.rd-markpop{
  position:absolute;z-index:78;display:none;flex-direction:column;gap:8px;width:min(300px,86vw);
  padding:12px;border-radius:12px;background:var(--paper);color:var(--ink);
  border:1px solid var(--border);box-shadow:var(--shadow);font-family:var(--font-sans);font-size:13px;
}
.rd-markpop.show{display:flex}
.rd-markpop .rd-swrow{display:flex;gap:6px;align-items:center}
.rd-markpop textarea{
  width:100%;min-height:64px;resize:vertical;border:1px solid var(--border);border-radius:8px;
  padding:8px;font:inherit;font-size:13px;background:var(--paper);color:var(--ink);
}
.rd-markpop .rd-markpop__acts{display:flex;flex-wrap:wrap;gap:6px;justify-content:space-between}
.rd-chip{
  border:1px solid var(--border);background:transparent;color:var(--ink);border-radius:8px;
  padding:6px 10px;font-size:12px;cursor:pointer;display:inline-flex;align-items:center;gap:5px;
}
.rd-chip:hover{background:var(--bg-2)}
.rd-chip.is-on{background:var(--brand);color:#fff;border-color:var(--brand)}
.rd-chip.danger{color:#c2410c;border-color:#f0c8a8}
.rd-chip.danger:hover{background:#fdeee4}

/* ===================== NGĂN KÉO XEM LẠI ===================== */
.rd-drawer{
  position:fixed;top:0;right:0;height:100%;width:min(380px,92vw);z-index:76;
  background:var(--paper);color:var(--ink);box-shadow:-12px 0 34px rgba(80,60,20,.22);
  font-family:var(--font-sans);display:flex;flex-direction:column;
  transform:translateX(102%);transition:transform .26s ease;
}
.rd-drawer.show{transform:none}
.rd-drawer__head{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:14px 16px;border-bottom:1px solid var(--border)}
.rd-drawer__head h3{margin:0;font-size:17px;color:var(--brand)}
.rd-drawer__body{flex:1;overflow:auto;padding:12px 14px}
.rd-drawer .rd-tabs{position:static;background:transparent;padding:0 0 8px}
.rd-drawer__scope{display:flex;gap:8px;align-items:center;margin:4px 0 10px;font-size:13px}
.rd-drawer__scope label{display:inline-flex;align-items:center;gap:5px;cursor:pointer}
.rd-search{width:100%;border:1px solid var(--border);border-radius:9px;padding:8px 11px;font:inherit;font-size:13px;background:var(--paper);color:var(--ink);margin-bottom:10px}

.rd-item{border:1px solid var(--border);border-radius:11px;padding:10px;margin-bottom:9px;background:var(--bg-2)}
.rd-item.is-pinned{border-color:var(--brand);box-shadow:0 0 0 1px var(--brand) inset}
.rd-item__top{display:flex;align-items:center;gap:7px;margin-bottom:5px}
.rd-item__dot{width:13px;height:13px;border-radius:50%;flex:0 0 auto;border:1px solid rgba(0,0,0,.12)}
.rd-item__dot.hl-yellow{background:var(--rd-hl-yellow)}
.rd-item__dot.hl-green{background:var(--rd-hl-green)}
.rd-item__dot.hl-pink{background:var(--rd-hl-pink)}
.rd-item__dot.hl-purple{background:var(--rd-hl-purple)}
.rd-item__dot.rd-u{background:repeating-linear-gradient(90deg,var(--rd-underline) 0 6px,transparent 6px 9px);border:0;border-radius:0;height:3px;align-self:center}
.rd-item__chap{font-size:11px;color:var(--ink-soft);flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.rd-item__pin{border:0;background:transparent;cursor:pointer;color:var(--ink-soft);font-size:14px;padding:2px}
.rd-item__pin.is-on{color:var(--brand)}
.rd-item__quote{font-family:var(--font-serif);font-size:14px;line-height:1.45;color:var(--ink);cursor:pointer;display:block}
.rd-item__quote:hover{color:var(--brand)}
.rd-item__note{margin-top:6px;padding:7px 9px;background:var(--paper);border-left:3px solid var(--brand);border-radius:0 7px 7px 0;font-size:13px;line-height:1.45;white-space:pre-wrap}
.rd-item__acts{display:flex;gap:6px;margin-top:8px;flex-wrap:wrap}
.rd-item__nb{font-size:11px;color:var(--accent);margin-left:4px}
.rd-empty{text-align:center;color:var(--ink-soft);font-size:13px;padding:30px 10px}
.rd-drawer__foot{padding:10px 14px;border-top:1px solid var(--border);display:flex;gap:8px}
.rd-drawer__foot .rd-chip{flex:1;justify-content:center}

/* ===================== ĐẾM SỐ LƯỢNG Ở SIDEBAR ===================== */
.rd-count{
  display:inline-flex;align-items:center;gap:3px;margin-left:6px;
  background:rgba(255,255,255,.22);color:#fff;border-radius:999px;
  padding:0 7px;height:18px;font-size:11px;font-weight:700;font-family:var(--font-sans);
  vertical-align:middle;
}
.rd-count.rd-count--note::before{content:"✎";font-weight:400}
.toc .rd-count{background:var(--brand);color:#fff}

/* ===================== TIỆN ÍCH ===================== */
@media print{.rd-selpop,.rd-markpop,.rd-drawer,.rd-bmpin,.rd-noteflag{display:none!important}}
@media(max-width:820px){
  /* ngăn kéo thành bottom-sheet trên mobile */
  .rd-drawer{
    top:auto;bottom:0;right:0;left:0;width:100%;height:82vh;border-radius:18px 18px 0 0;
    transform:translateY(102%);box-shadow:0 -12px 34px rgba(80,60,20,.22);
  }
  .rd-drawer.show{transform:none}
}