:root{
  --yellow:#f0cb24;
  --yellow-dark:#dfb913;
  --blue:#0977d3;
  --bg:#f2f3f5;
  --line:#e8e8e8;
  --text:#333;
  --muted:#888;
}
*{box-sizing:border-box}
html,body{
  width:100%;height:100%;margin:0;
  font-family:Inter,system-ui,-apple-system,"Segoe UI",sans-serif;
  color:var(--text);background:var(--bg)
}
body{overflow:hidden}
button,textarea,input{font:inherit}
.chat-page{
  width:100%;height:100dvh;
  display:grid;place-items:center;
  padding:20px
}
.chat-shell{
  width:min(390px,100%);
  height:min(720px,calc(100dvh - 40px));
  display:flex;flex-direction:column;
  overflow:hidden;
  background:#fff;
  border-radius:5px 5px 16px 16px;
  box-shadow:0 12px 35px rgba(0,0,0,.18)
}
.chat-header{
  height:72px;flex:0 0 72px;
  display:flex;align-items:center;gap:10px;
  padding:10px 14px;
  color:#fff;
  background:linear-gradient(135deg,var(--yellow),#eac51e);
  box-shadow:0 2px 5px rgba(0,0,0,.08);
  z-index:5
}
.avatar,.welcome-avatar{
  overflow:hidden;display:grid;place-items:center;
  border-radius:50%;
  background:#fff;color:#bf9e0b;
  font-weight:900
}
.avatar{
  width:42px;height:42px;flex:0 0 42px;
  border:2px solid rgba(255,255,255,.9)
}
.avatar img,.welcome-avatar img{
  width:100%;height:100%;display:block;object-fit:cover
}
.agent-heading{min-width:0;flex:1}
.agent-heading b{
  display:block;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
  font-size:15px;color:#fff
}
.status-line{
  margin-top:3px;color:rgba(255,255,255,.88);
  font-size:11px
}
.header-action{
  width:32px;height:32px;padding:0;border:0;
  display:grid;place-items:center;
  color:#fff;background:transparent;
  cursor:pointer
}
.menu-btn{margin-left:2px}
.close-btn{margin-left:-2px}

.welcome{
  flex:1;overflow:auto;
  padding:25px 20px;
  background:#fafafa
}
.welcome-card{text-align:center;margin-bottom:22px}
.welcome-avatar{
  width:64px;height:64px;margin:0 auto 11px;
  border:1px solid #eee;box-shadow:0 4px 14px rgba(0,0,0,.08)
}
.welcome-card h1{margin:0;font-size:22px}
.welcome-card p{
  margin:7px auto 0;max-width:320px;
  color:#777;font-size:13px;line-height:1.5
}
.field{display:block;margin:12px 0}
.field span{
  display:block;margin-bottom:6px;
  color:#555;font-size:12px;font-weight:700
}
.field input{
  width:100%;height:45px;padding:0 12px;
  border:1px solid #ddd;border-radius:7px;
  outline:0;background:#fff
}
.field input:focus{
  border-color:var(--yellow-dark);
  box-shadow:0 0 0 3px rgba(240,203,36,.15)
}
.start-btn{
  width:100%;height:45px;margin-top:8px;
  border:0;border-radius:7px;
  color:#4d4300;background:var(--yellow);
  font-weight:800
}
.form-error{min-height:18px;margin-top:7px;color:#bf3333;font-size:12px}

.chat{
  position:relative;
  flex:1;min-height:0;
  display:flex;flex-direction:column;
  background:#fff
}
.notice{
  padding:7px 12px;
  border-bottom:1px solid #eee;
  color:#888;background:#fbfbfb;
  text-align:center;font-size:10px
}
.messages{
  flex:1;min-height:0;
  overflow-y:auto;
  padding:18px 14px 22px;
  overscroll-behavior:contain;
  scroll-behavior:smooth;
  background:#fff
}
.messages::-webkit-scrollbar{width:5px}
.messages::-webkit-scrollbar-thumb{background:#d7d7d7;border-radius:999px}
.msg{
  display:flex;align-items:flex-end;
  max-width:86%;
  margin:10px 0
}
.msg.agent{margin-right:auto}
.msg.visitor{margin-left:auto;justify-content:flex-end}
.msg.system{
  max-width:86%;
  justify-content:flex-start;
  margin:10px 0 10px 0;
  color:inherit;
  font-size:inherit;
  font-style:normal;
  text-align:left
}
.msg.system .bubble{
  background:#f3f3f3;
  color:#333;
  border-radius:5px
}
.msg.system .bubble small{color:#aaa}
.bubble{
  padding:11px 13px;
  border:0;border-radius:5px;
  color:#333;background:#f3f3f3;
  box-shadow:none;
  line-height:1.48;
  font-size:13px;
  word-break:break-word
}
.visitor .bubble{
  min-width:48px;
  color:#fff;
  background:linear-gradient(135deg,#147ed4,#0570c7);
  border-radius:5px
}
.bubble>b{display:none}
.bubble small{
  display:block;margin-top:5px;
  color:#aaa;font-size:9px;text-align:right
}
.visitor .bubble small{color:rgba(255,255,255,.7)}
.read{
  margin-top:1px;text-align:right;
  color:rgba(255,255,255,.7);font-size:8px
}
.msg img{max-width:min(280px,100%);display:block;border-radius:6px}
.msg a{color:inherit}
.typing{
  padding:6px 13px;
  color:#999;background:#fff;
  font-size:10px
}
.typing span{
  width:4px;height:4px;display:inline-block;
  margin-right:2px;border-radius:50%;
  background:#999;animation:dot 1.2s infinite
}
.typing span:nth-child(2){animation-delay:.15s}
.typing span:nth-child(3){animation-delay:.3s}
@keyframes dot{
  0%,60%,100%{transform:none;opacity:.4}
  30%{transform:translateY(-3px);opacity:1}
}
.new-message{
  position:absolute;left:50%;bottom:67px;
  transform:translateX(-50%);
  z-index:7;padding:7px 12px;
  border:0;border-radius:999px;
  color:#fff;background:#147bcf;
  box-shadow:0 4px 14px rgba(0,0,0,.18);
  font-size:11px
}
.emoji-panel{
  position:absolute;right:8px;bottom:62px;
  z-index:8;
  width:205px;padding:8px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:4px;
  border:1px solid #e5e5e5;border-radius:10px;
  background:#fff;box-shadow:0 8px 25px rgba(0,0,0,.16)
}
.emoji-panel button{
  height:36px;border:0;border-radius:7px;
  background:transparent;cursor:pointer;font-size:20px
}
.emoji-panel button:hover{background:#f4f4f4}

.composer{
  flex:0 0 auto;
  display:flex;align-items:center;gap:3px;
  padding:8px 9px max(8px,env(safe-area-inset-bottom));
  border-top:1px solid var(--line);
  background:#fff
}
.composer textarea{
  flex:1;min-width:0;
  height:39px;min-height:39px;max-height:105px;
  padding:10px 8px;
  resize:none;outline:0;
  border:0;background:#fff;
  color:#555
}
.composer textarea::placeholder{color:#aaa}
.composer-icon,.send-btn{
  color:#fff;background:#1180d5;
  box-shadow:0 2px 5px rgba(17,128,213,.25)
}
.composer-icon:hover{background:#f2f2f2}

.send-btn{
  color:#fff;background:#1180d5;
  box-shadow:0 2px 5px rgba(17,128,213,.25)
}
.rating{
  margin:auto;width:100%;padding:28px 18px;text-align:center
}
.rating-icon{
  width:52px;height:52px;margin:0 auto 12px;
  display:grid;place-items:center;border-radius:50%;
  color:#fff;background:#2aae70;font-size:24px
}
.rating textarea{
  width:100%;min-height:85px;padding:10px;
  border:1px solid #ddd;border-radius:8px
}
.rating #stars button{
  border:0;background:transparent;
  color:#d3d3d3;font-size:30px;cursor:pointer
}
.rating #stars button.on{color:#ffb400}
.hidden{display:none!important}

body.embed-mode .chat-page{padding:0}
.embed-mode .chat-shell{
  width:100%;height:100dvh;
  border-radius:0;box-shadow:none
}
@media(max-width:520px){
  .chat-page{padding:0}
  .chat-shell{
    width:100%;height:100dvh;
    border-radius:0;box-shadow:none
  }
  .chat-header{height:70px;flex-basis:70px}
  .messages{padding:16px 12px 20px}
  .msg{max-width:88%}
}


/* Gửi file và ảnh */
.upload-panel{
  display:flex;align-items:center;gap:10px;
  padding:9px 11px;
  border-top:1px solid var(--line);
  background:#fffbea;
}
.upload-preview{
  width:48px;height:48px;flex:0 0 48px;
  display:grid;place-items:center;overflow:hidden;
  border:1px solid #e4d997;border-radius:7px;
  background:#fff;font-size:24px
}
.upload-preview img{width:100%;height:100%;object-fit:cover}
.upload-info{min-width:0;flex:1}
.upload-info b{
  display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
  font-size:12px
}
.upload-info small{display:block;margin-top:2px;color:#888;font-size:10px}
.progress{
  height:4px;margin-top:6px;overflow:hidden;
  border-radius:999px;background:#e8e8e8
}
.progress span{
  display:block;width:0;height:100%;
  border-radius:999px;background:#1180d5;
  transition:width .15s linear
}
.cancel-upload{
  width:28px;height:28px;padding:0;border:0;border-radius:50%;
  color:#777;background:#eee;cursor:pointer;font-size:20px
}
.drop-overlay{
  position:absolute;inset:72px 0 56px;
  z-index:30;display:grid;place-items:center;
  border:3px dashed #e4be17;
  color:#796400;background:rgba(255,248,204,.94);
  text-align:center
}
.file-card{
  min-width:200px;
  display:flex;align-items:center;gap:10px
}
.file-icon{
  width:40px;height:40px;flex:0 0 40px;
  display:grid;place-items:center;
  border-radius:7px;
  background:rgba(255,255,255,.75);
  font-size:22px
}
.file-meta{min-width:0}
.file-meta strong{
  display:block;max-width:190px;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
  font-size:12px
}
.file-meta span{display:block;margin-top:3px;font-size:9px;opacity:.7}
.file-download{
  display:inline-block;margin-top:5px;
  color:inherit;text-decoration:underline;font-size:10px
}
.chat-image{
  display:block;max-width:min(280px,100%);max-height:320px;
  border-radius:7px;cursor:zoom-in;object-fit:cover
}
.image-viewer{
  position:fixed;inset:0;z-index:99999;
  display:grid;place-items:center;padding:20px;
  background:rgba(0,0,0,.88)
}
.image-viewer img{max-width:95vw;max-height:92vh;object-fit:contain}
.image-viewer button{
  position:absolute;right:16px;top:10px;
  width:42px;height:42px;border:0;border-radius:50%;
  color:#fff;background:rgba(255,255,255,.15);
  cursor:pointer;font-size:31px
}
.composer.dragging{background:#fffbea}


.header-action svg{
  width:22px;height:22px;
  fill:none;stroke:currentColor;stroke-width:2;
  stroke-linecap:round;stroke-linejoin:round
}
.close-btn svg{width:23px;height:23px;stroke-width:1.9}
.composer-icon svg{
  width:23px;height:23px;
  fill:none;stroke:currentColor;stroke-width:1.8;
  stroke-linecap:round;stroke-linejoin:round
}
.like-icon svg{width:24px;height:24px;stroke-width:1.7}
.attach svg{
  width:25px;height:25px;
  transform:rotate(-3deg);
  stroke-width:1.75
}
.emoji-icon svg{width:23px;height:23px}
.send-btn svg{
  width:19px;height:19px;
  fill:currentColor;stroke:none;
  transform:translateX(1px)
}
.composer-icon:hover{
  color:#555;background:#f2f2f2
}
.attach:hover{
  color:#555;background:#f2f2f2
}
.composer-icon:active,.send-btn:active{transform:scale(.94)}




/* Bản sửa giao diện PC */
@media (min-width: 900px) {
  .chat-page{
    min-height:100vh;
    padding:28px;
  }

  .chat-shell{
    width:550px;
    height:min(850px,calc(100vh - 56px));
    border-radius:14px;
    box-shadow:0 18px 48px rgba(0,0,0,.18);
  }

  .chat-header{
    height:84px;
    flex-basis:84px;
    padding:14px 18px;
    gap:13px;
  }

  .avatar{
    width:54px;
    height:54px;
    flex-basis:54px;
    border:2px solid rgba(255,255,255,.95);
  }

  .agent-heading b{font-size:17px}
  .status-line{font-size:12px}

  .header-action{
    width:38px;
    height:38px;
    border-radius:50%;
  }

  .header-action:hover{
    background:rgba(255,255,255,.14);
  }

  .notice{
    padding:9px 14px;
    font-size:12px;
  }

  .messages{
    padding:24px 20px 28px;
  }

  .msg{
    max-width:78%;
    margin:12px 0;
  }

  .bubble{
    padding:12px 15px;
    font-size:15px;
    line-height:1.5;
    border-radius:10px;
  }

  .visitor .bubble{
    border-radius:10px;
  }

  .composer{
    min-height:70px;
    gap:4px;
    padding:10px 14px 12px;
    border-top:1px solid #e5e5e5;
  }

  .composer textarea{
    height:46px;
    min-height:46px;
    max-height:120px;
    padding:13px 10px;
    font-size:15px;
  }

  .composer-icon,
  .send-btn{
    width:38px;
    height:38px;
    flex-basis:38px;
    border:none;
    border-radius:50%;
    box-shadow:none;
  }

  .composer-icon{
    color:#666;
    background:transparent;
  }

  .composer-icon:hover{
    color:#1377c8;
    background:#eef6fd;
  }

  .send-btn{
    color:#fff;
    background:#0f7ed1;
    box-shadow:0 3px 9px rgba(15,126,209,.28);
  }

  .send-btn:hover{
    background:#096fbc;
  }

  .composer-icon svg,
  .header-action svg,
  .send-btn svg{
    display:block;
    fill:none;
    stroke:currentColor;
    stroke-width:1.8;
    stroke-linecap:round;
    stroke-linejoin:round;
  }

  .composer-icon svg{
    width:24px;
    height:24px;
  }

  .attach svg{
    width:25px;
    height:25px;
  }

  .header-action svg{
    width:23px;
    height:23px;
  }

  .send-btn svg{
    width:20px;
    height:20px;
    fill:currentColor;
    stroke:none;
  }

  .chat-image{
    max-width:360px;
    max-height:420px;
  }

  .file-card{
    min-width:260px;
  }

  .welcome{
    padding:32px 38px;
  }

  .field input{
    height:50px;
    font-size:15px;
  }

  .start-btn{
    height:50px;
    font-size:15px;
  }
}

@media (max-width: 899px) {
  .composer-icon svg,
  .header-action svg,
  .send-btn svg{
    display:block;
    fill:none;
    stroke:currentColor;
    stroke-width:1.8;
    stroke-linecap:round;
    stroke-linejoin:round;
  }

  .composer-icon svg{width:22px;height:22px}
  .header-action svg{width:22px;height:22px}
  .send-btn svg{
    width:18px;height:18px;
    fill:currentColor;
    stroke:none;
  }
}


/* Căn giữa icon đính kèm với các nút còn lại */
.composer{
  align-items:center;
}

.composer-icon,
.attach,
.send-btn{
  align-self:center;
  line-height:0;
}

.attach{
  display:grid;
  place-items:center;
  margin:0;
  padding:0;
  vertical-align:middle;
}

.attach svg{
  display:block;
  margin:0;
  transform:none !important;
}

.composer-icon svg,
.send-btn svg{
  display:block;
  margin:auto;
}


/* Avatar nhân viên trong nội dung hội thoại */
.msg.agent{
  max-width:88%;
  display:flex;
  align-items:flex-end;
  gap:9px;
}

.agent-message-avatar{
  width:34px;
  height:34px;
  flex:0 0 34px;
  overflow:hidden;
  display:grid;
  place-items:center;
  border:1px solid #e6e6e6;
  border-radius:50%;
  color:#9b8100;
  background:#fff;
  font-size:11px;
  font-weight:800;
  box-shadow:0 2px 7px rgba(0,0,0,.08);
}

.agent-message-avatar img{
  width:100%;
  height:100%;
  display:block;
  object-fit:cover;
}

.agent-message-avatar.avatar-hidden{
  visibility:hidden;
}

.agent-message-content{
  min-width:0;
  max-width:calc(100% - 43px);
}

.message-sender-name{
  margin:0 0 5px 2px;
  color:#777;
  font-size:11px;
  font-weight:600;
}

.msg.agent.group-follow{
  margin-top:-5px;
}

.msg.agent.group-follow .bubble{
  border-top-left-radius:8px;
}

.msg.agent.group-start{
  margin-top:16px;
}

@media (min-width:900px){
  .agent-message-avatar{
    width:40px;
    height:40px;
    flex-basis:40px;
    font-size:12px;
  }

  .agent-message-content{
    max-width:calc(100% - 49px);
  }

  .message-sender-name{
    font-size:12px;
  }
}


/* Link Preview dùng chung do Admin tổng cấu hình */
.link-preview-url{
  display:block;
  margin-bottom:7px;
  color:#075fbd!important;
  text-decoration:none;
  word-break:break-all;
  font-size:14px;
}
.visitor .link-preview-url{color:#fff!important}
.link-preview-card{
  min-width:260px;
  max-width:410px;
  overflow:hidden;
  display:grid;
  grid-template-columns:5px minmax(0,1fr) auto;
  border-radius:10px;
  color:var(--lp-text)!important;
  background:var(--lp-bg);
  text-decoration:none!important;
}
.link-preview-border{background:var(--lp-border)}
.link-preview-copy{
  min-width:0;
  padding:12px 13px;
}
.link-preview-copy strong{
  display:block;
  margin-bottom:4px;
  color:inherit;
  font-size:14px;
}
.link-preview-copy span{
  display:block;
  overflow:hidden;
  color:inherit;
  font-size:12px;
  line-height:1.45;
  opacity:.9;
}
.link-preview-media{
  width:94px;
  min-height:90px;
  margin:8px;
  overflow:hidden;
  display:grid;
  place-items:center;
  border-radius:8px;
  background:#fff;
}
.link-preview-media img{
  width:100%;
  height:100%;
  display:block;
  object-fit:contain;
}
.message-extra-text{margin-bottom:7px}
@media(max-width:520px){
  .link-preview-card{min-width:220px;max-width:100%}
  .link-preview-media{width:76px;min-height:76px}
}

/* Fix thanh nhập tin nhắn trên điện thoại/iOS */
@media (max-width: 899px) {
  .composer{
    width:100%;
    min-height:58px;
    gap:2px;
    padding:7px 8px max(7px, env(safe-area-inset-bottom));
    overflow:visible;
  }

  .composer textarea{
    flex:1 1 auto;
    width:auto;
    min-width:0;
    height:42px;
    min-height:42px;
    max-height:96px;
    padding:10px 7px;
    font-size:16px; /* tránh Safari tự zoom */
    line-height:22px;
  }

  .composer-icon,
  .composer .attach,
  .send-btn{
    -webkit-appearance:none;
    appearance:none;
    width:36px;
    height:36px;
    min-width:36px;
    flex:0 0 36px;
    margin:0;
    padding:0;
    display:grid;
    place-items:center;
    border:0;
    border-radius:50%;
    line-height:0;
    box-shadow:none;
    cursor:pointer;
    touch-action:manipulation;
  }

  .composer-icon,
  .composer .attach{
    color:#147bcf;
    background:transparent;
  }

  .composer-icon:hover,
  .composer-icon:focus,
  .composer .attach:hover,
  .composer .attach:focus{
    color:#147bcf;
    background:#eef6fd;
    outline:none;
  }

  .send-btn{
    color:#fff;
    background:#147bcf;
    box-shadow:0 2px 6px rgba(20,123,207,.24);
  }

  .send-btn:hover,
  .send-btn:focus{
    background:#0d6fbf;
    outline:none;
  }

  .composer-icon svg,
  .composer .attach svg{
    width:22px;
    height:22px;
  }

  .send-btn svg{
    width:18px;
    height:18px;
  }
}

@media (max-width: 380px) {
  .composer{gap:1px;padding-left:5px;padding-right:5px}
  .composer-icon,
  .composer .attach,
  .send-btn{
    width:33px;
    height:33px;
    min-width:33px;
    flex-basis:33px;
  }
  .composer textarea{padding-left:5px;padding-right:5px}
}

/* Căn avatar của tin nhắn chào mừng theo đầu bong bóng, tránh bị tụt xuống dưới */
.msg.system.welcome-system-message{
  align-items:flex-start;
}
.msg.system.welcome-system-message .agent-message-avatar{
  align-self:flex-start;
  margin-top:20px;
}
@media (max-width:899px){
  .msg.system.welcome-system-message .agent-message-avatar{
    margin-top:18px;
  }
}

/* ===============================
   Viettel Post brand theme
   =============================== */
:root{
  --viettel-red:#e60012;
  --viettel-red-dark:#c90010;
  --viettel-red-soft:#fff0f2;
  --viettel-text:#242424;
  --viettel-muted:#6f6f6f;
  --yellow:var(--viettel-red);
  --yellow-dark:var(--viettel-red-dark);
  --blue:var(--viettel-red);
}

.chat-header{
  background:linear-gradient(135deg,#e60012 0%,#f21c2d 58%,#cf0010 100%);
  box-shadow:0 3px 10px rgba(176,0,14,.22);
}
.avatar,.welcome-avatar{
  color:var(--viettel-red);
  background:#fff;
  border-color:rgba(255,255,255,.96);
}
.brand-avatar img{object-fit:cover}

/* Màn hình nhập tên + email dùng ảnh Giao ngay - Nối tình */
.welcome{
  position:relative;
  padding:0;
  display:flex;
  align-items:flex-end;
  overflow:auto;
  background:linear-gradient(180deg,#f6f6f6 0%,#ffffff 100%);
}
.welcome-media{
  position:absolute;
  inset:0 0 auto 0;
  z-index:0;
  display:flex;
  align-items:flex-start;
  justify-content:center;
  padding:12px 12px 0;
  height:390px;
}
.welcome-media img{
  width:100%;
  height:100%;
  display:block;
  object-fit:contain;
  object-position:center top;
}
.welcome-overlay{
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(255,255,255,.00) 0%,rgba(255,255,255,.10) 42%,rgba(255,255,255,.92) 62%,rgba(255,255,255,.98) 100%);
  pointer-events:none;
}
.welcome-content{
  position:relative;
  z-index:1;
  width:100%;
  padding:335px 18px 22px;
}
.welcome-card{
  margin:0 0 12px;
  padding:15px 16px 13px;
  border-radius:16px;
  text-align:left;
  background:rgba(255,255,255,.92);
  border:1px solid rgba(255,255,255,.9);
  box-shadow:0 12px 28px rgba(67,0,5,.13);
  backdrop-filter:blur(8px);
}
.welcome-brand{
  width:116px;
  height:40px;
  margin-bottom:7px;
  overflow:hidden;
  border-radius:9px;
  background:var(--viettel-red);
}
.welcome-brand img{
  width:100%;height:100%;object-fit:contain;display:block;
}
.welcome-card h1{
  margin:0;
  color:#222;
  font-size:20px;
  line-height:1.25;
}
.welcome-card p{
  margin:6px 0 0;
  max-width:none;
  color:#666;
  font-size:12.5px;
  line-height:1.45;
}
.entry-form-card{
  padding:14px;
  border-radius:16px;
  background:rgba(255,255,255,.97);
  border:1px solid rgba(230,0,18,.08);
  box-shadow:0 15px 34px rgba(79,0,6,.16);
}
.entry-form-card .field{margin:0 0 11px}
.entry-form-card .field span{
  margin:0 0 6px 2px;
  color:#3a3a3a;
  font-size:12px;
  font-weight:800;
}
.entry-form-card .field input{
  height:47px;
  padding:0 14px;
  border:1px solid #e2e2e2;
  border-radius:11px;
  background:#fff;
  color:#222;
  transition:.18s ease;
}
.entry-form-card .field input:focus{
  border-color:var(--viettel-red);
  box-shadow:0 0 0 3px rgba(230,0,18,.10);
}
.start-btn{
  height:48px;
  margin-top:1px;
  border-radius:11px;
  color:#fff;
  background:linear-gradient(135deg,#e60012,#f32131);
  box-shadow:0 8px 18px rgba(230,0,18,.22);
}
.start-btn:hover{background:linear-gradient(135deg,#d70011,#e60012)}
.form-error{color:#c50010;font-weight:600}

/* Bong bóng chat + trạng thái theo màu Viettel Post */
.visitor .bubble{
  color:#fff;
  background:linear-gradient(135deg,#e60012,#f12a39);
}
.new-message,.composer-icon,.send-btn{
  color:#fff;
  background:var(--viettel-red);
  box-shadow:0 2px 7px rgba(230,0,18,.24);
}
.composer-icon:hover,.attach:hover{color:#fff;background:var(--viettel-red-dark)}
.progress span{background:var(--viettel-red)}
.upload-panel{background:#fff6f7}
.upload-preview{border-color:#f3c3c8}
.drop-overlay{
  border-color:var(--viettel-red);
  color:#a9000d;
  background:rgba(255,239,241,.95);
}
.rating-icon{background:var(--viettel-red)}

@media(max-width:520px){
  .welcome-media{
    padding:10px 10px 0;
    height:335px;
  }
  .welcome-content{padding:288px 14px 18px}
  .welcome-card{padding:13px 14px 11px}
  .entry-form-card{padding:13px}
}

@media(min-width:900px){
  .welcome-media{
    height:430px;
    padding:16px 16px 0;
  }
  .welcome-content{padding:360px 24px 26px}
  .welcome-card,.entry-form-card{border-radius:18px}
}

/* 2026-10-04: Ảnh màn hình nhập thông tin - hiển thị toàn bộ, không cắt */
.welcome{
  display:block;
  overflow-y:auto;
  background:#fff;
}
.welcome-media{
  position:relative;
  inset:auto;
  width:100%;
  height:auto;
  padding:0;
  display:block;
  background:#fff;
}
.welcome-media img{
  width:100%;
  height:auto;
  max-height:none;
  display:block;
  object-fit:contain;
  object-position:center;
}
.welcome-overlay{display:none}
.welcome-content{
  position:relative;
  width:100%;
  padding:14px 18px 22px;
}
@media(max-width:520px){
  .welcome-media{height:auto;padding:0}
  .welcome-content{padding:12px 14px 18px}
}
@media(min-width:900px){
  .welcome-media{height:auto;padding:0}
  .welcome-content{padding:16px 24px 26px}
}