/* ============================================================
   DILO — Video feed (lướt dọc) — css/video-feed.css
   Dùng cho video.html?activity=club|ws
   ============================================================ */
:root{
  --vf-accent:#d14828;
  --vf-red:#8d2d2b;
  --vf-gold:#e19e37;
}
*{box-sizing:border-box}
html,body{height:100%;margin:0}
body.vf-body{
  background:#000;color:#fff;overflow:hidden;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,sans-serif;
}

/* khung điện thoại ở giữa trên desktop, full trên mobile */
.vf-phone{
  position:relative;height:100dvh;max-width:480px;margin:0 auto;
  background:#000;overflow:hidden;
}

/* ----- thanh trên ----- */
.vf-top{
  position:absolute;top:0;left:0;right:0;z-index:20;
  display:flex;align-items:center;gap:12px;
  padding:max(14px,env(safe-area-inset-top)) 14px 10px;
  background:linear-gradient(180deg,rgba(0,0,0,.55),transparent);
  pointer-events:none;
}
.vf-top .vf-back,.vf-top .vf-actlabel,.vf-top .vf-act-wrap{pointer-events:auto}
.vf-back{
  width:38px;height:38px;border:none;border-radius:50%;
  background:rgba(0,0,0,.35);color:#fff;font-size:20px;cursor:pointer;
  display:flex;align-items:center;justify-content:center;backdrop-filter:blur(4px);
}
.vf-logo{height:22px;width:auto;display:block;filter:drop-shadow(0 1px 4px rgba(0,0,0,.6))}
.vf-actlabel{
  font-size:12.5px;font-weight:700;letter-spacing:.5px;color:#fff;cursor:pointer;
  display:inline-flex;align-items:center;gap:5px;
  background:rgba(0,0,0,.35);border:1px solid rgba(255,255,255,.22);
  padding:5px 12px;border-radius:20px;backdrop-filter:blur(4px);text-transform:uppercase;
}

/* ----- vùng cuộn ----- */
.vf-feed{
  height:100%;overflow-y:scroll;scroll-snap-type:y mandatory;
  scrollbar-width:none;-webkit-overflow-scrolling:touch;
}
.vf-feed::-webkit-scrollbar{display:none}

.vf-slide{
  position:relative;height:100dvh;scroll-snap-align:start;
  display:flex;align-items:center;justify-content:center;overflow:hidden;background:#0a0a0b;
}
.vf-vid{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;background:#0a0a0b}
.vf-poster{position:absolute;inset:0;background-size:cover;background-position:center;filter:brightness(.9)}
.vf-shade{position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(0,0,0,.35) 0%,transparent 20%,transparent 52%,rgba(0,0,0,.9) 100%)}

/* spinner nhỏ khi đang tải clip đang xem */
.vf-spin{position:absolute;top:50%;left:50%;width:40px;height:40px;margin:-20px;
  border:3px solid rgba(255,255,255,.25);border-top-color:#fff;border-radius:50%;
  animation:vf-rot .8s linear infinite;opacity:0;transition:.2s;z-index:4}
.vf-slide.loading .vf-spin{opacity:1}
@keyframes vf-rot{to{transform:rotate(360deg)}}

/* badge play/pause khi chạm */
.vf-badge{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%) scale(.6);
  width:84px;height:84px;border-radius:50%;background:rgba(0,0,0,.45);
  display:flex;align-items:center;justify-content:center;font-size:36px;
  opacity:0;transition:.25s;z-index:6;pointer-events:none}
.vf-slide.show-badge .vf-badge{opacity:1;transform:translate(-50%,-50%) scale(1)}

/* nhãn preload trên clip kế */
.vf-preload{position:absolute;top:max(60px,calc(env(safe-area-inset-top) + 46px));right:12px;z-index:7;
  font-size:10px;color:#9cf;background:rgba(0,0,0,.4);padding:3px 8px;border-radius:8px;opacity:0;transition:.2s}
.vf-slide.is-next .vf-preload{opacity:.85}

/* nút loa */
/* ----- overlay thông tin ----- */
.vf-overlay{position:absolute;left:0;right:70px;bottom:0;z-index:5;
  padding:0 16px max(26px,env(safe-area-inset-bottom))}
.vf-shop{display:flex;align-items:center;gap:9px;margin-bottom:9px;cursor:pointer;width:fit-content}
.vf-ava{width:36px;height:36px;border-radius:50%;border:2px solid #fff;flex:none;
  background:linear-gradient(135deg,var(--vf-gold),var(--vf-red) 55%,#9f2f1f);
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:15px;
  background-size:cover;background-position:center}
.vf-shopname{font-size:14px;font-weight:700;text-shadow:0 1px 4px rgba(0,0,0,.6)}
.vf-title{font-size:18px;font-weight:800;line-height:1.25;margin:0 0 5px;
  text-shadow:0 2px 8px rgba(0,0,0,.55);cursor:pointer}
.vf-cap{font-size:13px;color:#eee;line-height:1.4;margin:0 0 10px;
  text-shadow:0 1px 6px rgba(0,0,0,.5);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.vf-chip{display:inline-flex;align-items:center;gap:5px;font-size:12px;font-weight:600;
  background:rgba(0,0,0,.4);border:1px solid rgba(255,255,255,.25);
  border-radius:20px;padding:5px 11px;backdrop-filter:blur(4px)}

/* ----- thanh nút bên phải ----- */
.vf-rail{position:absolute;right:10px;bottom:max(28px,env(safe-area-inset-bottom));z-index:6;
  display:flex;flex-direction:column;align-items:center;gap:18px}
.vf-rail button{background:none;border:none;color:#fff;cursor:pointer;
  display:flex;flex-direction:column;align-items:center;gap:3px;
  font-size:11px;font-weight:700;text-shadow:0 1px 4px rgba(0,0,0,.65)}
.vf-rail .vf-ico{font-size:30px;line-height:1}
/* icon bình luận: bong bóng tối, viền phát sáng cam-đỏ (kiểu TikTok) */
.vf-rail .vf-cmt-ico{display:inline-flex;align-items:center;justify-content:center}
.vf-rail .vf-cmt-ico svg{filter:drop-shadow(0 0 3px #e19e37) drop-shadow(0 0 6px #d14828) drop-shadow(0 0 10px rgba(209,72,40,.55))}
.vf-rail .vf-heart svg{width:32px;height:32px;fill:none;stroke:#fff;stroke-width:2;stroke-linejoin:round;vertical-align:middle;filter:drop-shadow(0 1px 2px rgba(0,0,0,.55));transition:fill .15s ease,stroke .15s ease,transform .15s ease}
.vf-rail button[data-act="like"]:active .vf-heart svg{transform:scale(1.2)}
.vf-rail .vf-heart.on svg{fill:#ff3b5c;stroke:#ff3b5c}
.vf-ticket{position:absolute;bottom:-2px;left:50%;transform:translateX(-50%) translateY(56px)}
.vf-ticket-btn{background:var(--vf-accent);color:#fff;border:none;border-radius:24px;
  padding:11px 16px;font-size:13px;font-weight:800;white-space:nowrap;cursor:pointer;
  box-shadow:0 6px 18px rgba(209,72,40,.5)}

/* ----- trạng thái loading / rỗng ----- */
.vf-state{position:absolute;inset:0;z-index:30;display:none;
  flex-direction:column;align-items:center;justify-content:center;gap:14px;
  text-align:center;padding:30px;background:#000}
.vf-state.show{display:flex}
.vf-state .vf-big{font-size:40px}
.vf-state h2{margin:0;font-size:18px;font-weight:800}
.vf-state p{margin:0;font-size:13.5px;color:#aaa;max-width:280px;line-height:1.5}
.vf-state a{color:var(--vf-accent);font-weight:700;text-decoration:none;
  border:1px solid var(--vf-accent);padding:9px 18px;border-radius:22px;margin-top:4px}
.vf-state .vf-spin2{width:38px;height:38px;border:3px solid rgba(255,255,255,.25);
  border-top-color:#fff;border-radius:50%;animation:vf-rot .8s linear infinite}

/* ----- sheet bình luận ----- */
.vf-sheet-scrim{position:fixed;inset:0;z-index:40;background:rgba(0,0,0,.5);
  opacity:0;visibility:hidden;transition:.25s}
.vf-sheet-scrim.show{opacity:1;visibility:visible}
.vf-sheet{position:absolute;left:0;right:0;bottom:0;max-width:480px;margin:0 auto;
  background:#16161a;border-radius:18px 18px 0 0;max-height:72dvh;display:flex;flex-direction:column;
  transform:translateY(100%);transition:transform .28s ease}
.vf-sheet-scrim.show .vf-sheet{transform:translateY(0)}
.vf-sheet-head{display:flex;align-items:center;justify-content:space-between;
  padding:14px 16px;border-bottom:1px solid rgba(255,255,255,.08)}
.vf-sheet-head b{font-size:15px}
.vf-sheet-close{background:none;border:none;color:#aaa;font-size:22px;cursor:pointer;line-height:1}
.vf-cmt-list{flex:1;overflow-y:auto;padding:10px 16px;display:flex;flex-direction:column;gap:14px}
.vf-cmt{display:flex;gap:10px}
.vf-cmt .vf-cmt-ava{width:32px;height:32px;border-radius:50%;flex:none;
  background:linear-gradient(135deg,var(--vf-gold),var(--vf-red));
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:13px}
.vf-cmt-body{flex:1;min-width:0}
.vf-cmt-author{font-size:13px;font-weight:700;margin-bottom:1px}
.vf-cmt-author span{font-weight:400;color:#888;font-size:11.5px;margin-left:6px}
.vf-cmt-text{font-size:13.5px;color:#ddd;line-height:1.4;word-wrap:break-word}
.vf-cmt-empty{color:#888;font-size:13px;text-align:center;padding:30px 0}
.vf-cmt-form{display:flex;gap:8px;padding:12px 16px;
  border-top:1px solid rgba(255,255,255,.08);background:#16161a}
.vf-cmt-form input{flex:1;background:#000;border:1px solid rgba(255,255,255,.15);
  border-radius:22px;padding:10px 14px;color:#fff;font-size:14px;outline:none}
.vf-cmt-form input:focus{border-color:var(--vf-accent)}
.vf-cmt-form button{background:var(--vf-accent);border:none;color:#fff;
  border-radius:22px;padding:0 16px;font-size:13px;font-weight:800;cursor:pointer}
.vf-cmt-form button:disabled{opacity:.5}

@media (prefers-reduced-motion:reduce){
  .vf-badge,.vf-sheet,.vf-sheet-scrim,.vf-spin{transition:none;animation:none}
}

/* ===== Reply trong video feed ===== */
.vf-cmt-replybtn{ background:none;border:none;color:#9aa;font-size:12px;font-weight:600;cursor:pointer;padding:2px 0;margin-top:4px; }
.vf-cmt-replybtn:hover{ color:#fff; }
.vf-cmt-replies{ margin-left:34px;border-left:2px solid rgba(255,255,255,.12);padding-left:10px; }
.vf-cmt-reply{ margin-top:8px; }
.vf-cmt-replyto{ color:#ff7a3c;font-weight:700; }
.vf-reply-chip{ display:flex;align-items:center;gap:8px;font-size:12px;color:#ddd;background:rgba(255,255,255,.08);border-radius:8px;padding:6px 10px;margin:0 12px 6px; }
.vf-reply-chip b{ color:#ff7a3c; }
.vf-reply-cancel{ cursor:pointer;font-weight:700;color:#aaa;margin-left:auto; }
.vf-reply-cancel:hover{ color:#fff; }

/* ===== Chuông thông báo trong video feed ===== */
.vf-notif-wrap{ position:relative;margin-left:auto;pointer-events:auto; }
.vf-notif-bell{ position:relative;background:none;border:none;color:#fff;cursor:pointer;padding:4px;display:inline-flex; }
.vf-notif-bell svg{ width:22px;height:22px; }
.vf-notif-badge{ position:absolute;top:-2px;right:-2px;min-width:16px;height:16px;padding:0 4px;border-radius:8px;background:#e0245e;color:#fff;font-size:10px;font-weight:700;display:flex;align-items:center;justify-content:center;line-height:1; }
.vf-notif-panel{ position:absolute;top:130%;right:0;width:300px;max-width:84vw;background:#1b1b1f;border:1px solid rgba(255,255,255,.12);border-radius:12px;box-shadow:0 10px 34px rgba(0,0,0,.6);z-index:1300;overflow:hidden; }
.vf-notif-head{ display:flex;align-items:center;justify-content:space-between;padding:11px 13px;border-bottom:1px solid rgba(255,255,255,.1);font-weight:700;color:#fff;font-size:14px; }
.vf-notif-allread{ background:none;border:none;color:#ff7a3c;font-size:12px;font-weight:600;cursor:pointer; }
.vf-notif-list{ max-height:340px;overflow-y:auto; }
.vf-notif-item{ padding:11px 13px;border-bottom:1px solid rgba(255,255,255,.08);cursor:pointer; }
.vf-notif-item:hover{ background:rgba(255,255,255,.06); }
.vf-notif-item.unread{ background:rgba(224,36,94,.10); }
.vf-notif-text{ font-size:13px;color:#eee;line-height:1.4; }
.vf-notif-snip{ font-size:12px;color:#aaa;margin-top:3px;font-style:italic; }
.vf-notif-time{ font-size:11px;color:#888;margin-top:4px; }
.vf-notif-empty{ padding:24px 13px;text-align:center;color:#888;font-size:13px; }

/* Avatar comment = link sang profile + ảnh thật */
.vf-cmt .vf-cmt-ava{ overflow:hidden; text-decoration:none; color:#fff; cursor:pointer; }
.vf-cmt .vf-cmt-ava img{ width:100%; height:100%; object-fit:cover; display:block; }
.vf-cmt-authlink{ color:inherit; text-decoration:none; }
.vf-cmt-authlink:hover{ text-decoration:underline; }

/* ===== Dropdown đổi Club / Workshop ===== */
.vf-act-wrap{ position:relative; margin-left:auto; pointer-events:auto; }
.vf-act-caret{ font-size:9px; opacity:.85; }
.vf-act-menu{ position:absolute; top:120%; right:0; min-width:185px; background:#1b1b1f; border:1px solid rgba(255,255,255,.14); border-radius:12px; overflow:hidden; box-shadow:0 10px 30px rgba(0,0,0,.6); display:none; z-index:30; }
.vf-act-menu.open{ display:block; }
.vf-act-menu a{ display:block; padding:12px 14px; color:#fff; text-decoration:none; font-size:13px; font-weight:600; }
.vf-act-menu a:hover{ background:rgba(255,255,255,.08); }

/* ===== Tim cho từng bình luận trong video ===== */
.vf-cmt-actions{ display:flex; align-items:center; gap:16px; margin-top:5px; }
.vf-cmt-actions .vf-cmt-replybtn{ margin-top:0; }
.vf-cmt-like{ display:inline-flex; align-items:center; gap:5px; background:none; border:none; cursor:pointer; padding:0; line-height:1; }
.vf-cmt-like-ico{ width:15px; height:15px; fill:none; stroke:#9aa; stroke-width:2; stroke-linejoin:round; transition:fill .15s ease, stroke .15s ease, transform .15s ease; }
.vf-cmt-like.on .vf-cmt-like-ico{ fill:#e0245e; stroke:#e0245e; }
.vf-cmt-like:hover .vf-cmt-like-ico{ stroke:#e0245e; }
.vf-cmt-like:active .vf-cmt-like-ico{ transform:scale(1.2); }
.vf-cmt-like-cnt{ font-size:12px; color:#9aa; }
.vf-cmt-like.on .vf-cmt-like-cnt{ color:#e0245e; }

/* ===== Nút & bảng chia sẻ (Messenger / Instagram) ===== */
.vf-rail .vf-share-ico svg{ filter:drop-shadow(0 1px 2px rgba(0,0,0,.55)); vertical-align:middle; }
.vf-share-scrim{ position:fixed; inset:0; z-index:60; background:rgba(0,0,0,.55);
  display:none; align-items:flex-end; justify-content:center;
  -webkit-backdrop-filter:blur(2px); backdrop-filter:blur(2px); }
.vf-share-scrim.open{ display:flex; }
.vf-share-sheet{ width:100%; max-width:480px; background:#1b1b1f;
  border-radius:20px 20px 0 0; border:1px solid rgba(255,255,255,.12); border-bottom:none;
  padding:10px 18px max(22px,env(safe-area-inset-bottom)); animation:vfShareUp .22s ease; }
@keyframes vfShareUp{ from{ transform:translateY(100%); } to{ transform:translateY(0); } }
.vf-share-grab{ width:40px; height:4px; border-radius:3px; background:rgba(255,255,255,.25); margin:4px auto 14px; }
.vf-share-title{ color:#fff; font-size:14px; font-weight:700; text-align:center; margin-bottom:18px; opacity:.92; }
.vf-share-row{ display:flex; justify-content:center; gap:38px; margin-bottom:16px; }
.vf-share-item{ background:none; border:none; cursor:pointer; display:flex; flex-direction:column; align-items:center; gap:9px; padding:4px; }
.vf-share-ic{ width:58px; height:58px; border-radius:50%; display:flex; align-items:center; justify-content:center; transition:transform .12s ease; }
.vf-share-mess{ background:linear-gradient(135deg,#00B2FF,#006AFF); }
.vf-share-ig{ background:linear-gradient(135deg,#feda75,#fa7e1e,#d62976,#962fbf); }
.vf-share-lb{ color:#fff; font-size:13px; font-weight:600; }
.vf-share-item:active .vf-share-ic{ transform:scale(.92); }
.vf-share-cancel{ width:100%; margin-top:6px; background:rgba(255,255,255,.08); color:#fff;
  border:none; border-radius:12px; padding:13px; font-size:14px; font-weight:700; cursor:pointer; }
.vf-share-cancel:hover{ background:rgba(255,255,255,.14); }