/* Đăng ký lớp đào tạo, Lớp học của tôi, quản trị đơn học (RV-891). Dùng chung biến màu của style.css và lớp tk- của tai-khoan.css. */
.dt-hero{background:#0E1C30;color:#FAF9F7;padding:28px 0 30px}
.dt-hero .wrap{display:grid;gap:10px}
.dt-hero .dt-eb{margin:0;font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:#C9A24B;font-weight:700}
.dt-hero h1,.dt-hero h2{margin:0;font-size:clamp(30px,6vw,46px);line-height:1.12}
.dt-hero h1 em,.dt-hero h2 em{font-style:normal;color:#E2C27A}
.dt-hero p{margin:0;max-width:720px}
.dt-hero .dt-sub{color:#D9DEE7}
.dt-chang{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:16px 0 0;padding:0;list-style:none}
.dt-chang li{border:1px solid rgba(201,162,75,.55);border-radius:8px;padding:12px 14px;background:rgba(255,255,255,.04)}
.dt-chang b{display:block;color:#E2C27A;font-size:14px}
.dt-chang span{display:block;font-weight:700;margin:2px 0}
.dt-chang small{display:block;color:#C9CFDA;font-size:14px;line-height:1.45}
.dt-hero .dt-fact{font-size:13px;color:#AEB6C4}
.dt-page{display:grid;gap:18px;padding:22px 0 40px;max-width:860px}
.dt-page .tk-card{margin:0}
.dt-form label{display:block;margin:14px 0 6px;font-weight:700}
.dt-form input[type="text"],.dt-form input[type="tel"],.dt-form textarea,.dt-qt-form input,.dt-lop-sua input,.dt-lop-sua select,[data-qt-loc]{width:100%;font:inherit;font-size:17px;padding:11px 14px;border:2px solid var(--ink);border-radius:var(--rb);background:#fff;color:var(--ink)}
[data-qt-loc]{width:auto;font-size:15px;padding:6px 10px}
.dt-form .dt-ck{display:flex;gap:10px;align-items:flex-start;font-weight:400;margin-top:18px}
.dt-form .dt-ck input{flex:none;width:22px;height:22px;margin:2px 0 0;accent-color:var(--accent)}
.dt-gia{display:flex;align-items:baseline;gap:10px;margin:8px 0 4px;padding:10px 14px;background:var(--soft);border-radius:var(--rb)}
.dt-gia strong{font-size:24px}
.dt-lop-dl{display:grid;grid-template-columns:max-content 1fr;gap:4px 14px;margin:8px 0}
.dt-lop-dl dt{color:var(--muted);font-size:15px}
.dt-lop-dl dd{margin:0}
.dt-don h3{margin:6px 0 4px;font-size:22px}
.dt-don-top{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:0}
.dt-ma{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.06em}
.dt-tt{display:inline-block;padding:2px 10px;border-radius:999px;font-size:13.5px;font-weight:700;background:var(--soft);color:var(--ink)}
.dt-tt-cho-thanh-toan{background:#FFF4D6;color:#6B4A00}
.dt-tt-cho-doi-soat{background:#E6ECFF;color:#1733C9}
.dt-tt-da-thanh-toan{background:#DDF5E4;color:#0B5A27}
.dt-tt-can-kiem{background:#FFE3E0;color:#8A1C12}
.dt-tt-da-huy{background:#ECEEF2;color:#5B626F}
.dt-tt-d{margin:6px 0 0;color:var(--ink)}
.dt-pay{margin:16px 0 4px;padding:16px;border:2px solid var(--ink);border-radius:8px;background:#fff}
.dt-pay h3{margin:0 0 10px;font-size:19px}
.dt-pay-in{display:grid;grid-template-columns:minmax(0,240px) 1fr;gap:18px;align-items:start}
.dt-qr-img{background:#fff;border:1px solid var(--line);border-radius:6px;padding:6px;max-width:240px}
.dt-qr-img svg{display:block;width:100%;height:auto}
.dt-bank{display:grid;grid-template-columns:max-content 1fr;gap:6px 12px;margin:0}
.dt-bank dt{color:var(--muted);font-size:15px;padding-top:3px}
.dt-bank dd{margin:0;overflow-wrap:anywhere}
.dt-big{font-size:19px}
.dt-ttin{margin-top:12px}
.dt-ttin summary{cursor:pointer;font-weight:700;min-height:36px}
.dt-xong{display:grid;gap:14px}
.dt-xong-dau h2{margin:6px 0}
.dt-bang-cuon{overflow-x:auto}
.dt-bang{width:100%;border-collapse:collapse;font-size:15px}
.dt-bang th,.dt-bang td{border-top:1px solid var(--line);padding:10px 8px;text-align:left;vertical-align:top}
.dt-bang th{font-size:14px;color:var(--muted)}
.dt-qt-act{min-width:160px}
.dt-qt-act .tk-link{display:block}
.dt-qt-form label{display:block;margin:8px 0 4px;font-weight:600;font-size:15px}
.dt-lop-sua label{display:block;margin:10px 0 4px;font-weight:700}
@media (max-width:640px){
  .dt-chang{grid-template-columns:1fr}
  .dt-pay-in{grid-template-columns:1fr}
  .dt-qr-img{max-width:260px;margin-inline:auto}
  .dt-lop-dl,.dt-bank{grid-template-columns:1fr;gap:0 0}
  .dt-lop-dl dd,.dt-bank dd{margin-bottom:8px}
  .dt-bang thead{display:none}
  .dt-bang,.dt-bang tbody,.dt-bang tr,.dt-bang td{display:block;width:100%}
  .dt-bang tr{border-top:2px solid var(--ink);padding:6px 0}
  .dt-bang td{border:0;padding:4px 0}
}
.dt-hero a{color:#E2C27A}

/* RV-902: trang đăng ký đặt form/đơn lên đầu, phần giới thiệu lớp xuống dưới */
.dt-top{background:#0E1C30;color:#FAF9F7;padding:18px 0 16px}
.dt-top .wrap{display:grid;gap:4px}
.dt-top .dt-eb{margin:0;font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:#C9A24B;font-weight:700}
.dt-top h1{margin:0;font-size:clamp(24px,4.6vw,34px);line-height:1.18}
.dt-top h1 em{font-style:normal;color:#E2C27A}
.dt-top .dt-sub{margin:0;font-size:15px}
.dt-top a{color:#E2C27A}
.dt-hero{scroll-margin-top:64px}
.dt-thieu{border-left:4px solid #E2A33A;background:#FFF7E8}
.dt-thieu h2{margin:4px 0 6px}
.dt-thieu-d{border-left:4px solid #E2A33A;background:#FFF7E8;padding:8px 12px;border-radius:4px}

/* RV-903: khối thông tin lớp dạng vé */
.dt-ve{display:grid;grid-template-columns:auto 1fr;border:1px solid #E3E6EC;border-radius:12px;overflow:hidden;margin:10px 0 14px;background:#fff}
.dt-ve-ngay{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;padding:14px 18px;background:#0E1C30;color:#FAF9F7;min-width:118px;text-align:center}
.dt-ve-ngay span{font-size:13px;letter-spacing:.06em;color:#C9CFDA}
.dt-ve-ngay strong{font-size:34px;line-height:1;color:#E2C27A;font-weight:800}
.dt-ve-ngay .dt-ve-cho{font-size:16px}
.dt-ve-tt{padding:12px 16px;display:grid;gap:8px;align-content:center}
.dt-ve-tt p{margin:0}
.dt-ve-lop{font-weight:800;font-size:18px}
.dt-ve-row{display:flex;gap:10px;align-items:flex-start;line-height:1.45}
.dt-ve-row svg{flex:0 0 20px;width:20px;height:20px;margin-top:2px;color:#2448FF}
.dt-ve-dc{color:var(--muted);font-size:15px}
.dt-ve-map{font-size:14px}
.dt-ve-gia{grid-column:1/-1;display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 12px;padding:12px 16px;background:#FFF7E8;border-top:1px dashed #E2C27A}
.dt-ve-gia span{color:var(--muted)}
.dt-ve-gia strong{font-size:26px;font-weight:800}
.dt-ve-gia small{color:var(--muted);font-size:14px}
.dt-nw{white-space:nowrap}
@media (max-width:560px){.dt-ve{grid-template-columns:1fr}.dt-ve-ngay{flex-direction:row;justify-content:flex-start;align-items:baseline;gap:10px;padding:10px 14px;min-width:0}.dt-ve-ngay strong{font-size:26px}.dt-ve-tt{padding:12px 14px}}
.dt-tt-khach-moi{background:#EDE7FF;color:#4B2BB8}
/* RV-907: hình thức học */
.dt-ht{border:0;margin:6px 0 4px;padding:0;display:grid;gap:8px}
.dt-ht legend{font-weight:700;margin-bottom:6px;padding:0}
.dt-ht-o{display:flex;gap:10px;align-items:flex-start;border:1px solid #D7DCE5;border-radius:10px;padding:10px 12px;cursor:pointer;font-weight:400}
.dt-ht-o:has(input:checked){border-color:#2448FF;background:#F3F5FF}
.dt-ht-o input{margin-top:4px}
.dt-ht-o small{display:block;color:var(--muted);font-size:14px}
.dt-tt-online{background:#E3F6FF;color:#05628A;font-size:12px;padding:1px 8px}
.dt-da-luu{color:#137333;font-weight:600;margin-top:4px}
/* RV-911: lớp Zoom riêng */
.dt-tt-cho-lop-zoom{background:#EEF2FF;color:#3730A3}
.dt-zoom-lich{margin:14px 0;padding:10px 12px 12px;border:1px solid var(--line,#e5e7eb);border-radius:8px}
.dt-zoom-lich legend{font-weight:700;padding:0 6px}
/* Học tiếp sau lớp 22/10/2026 */
.dt-loai{margin-bottom:14px}
.dt-hoc-tiep{margin:14px 0 4px;padding:14px 16px;border-radius:12px;background:#F3F5FF;border:1px solid #C9D2FF}
.dt-hoc-tiep p{margin:0 0 8px}
.dt-tai-lieu .tk-actions{display:flex;flex-wrap:wrap;gap:8px}
.dt-tt-cho-duyet{background:#FFF4D6;color:#7A5200}
/* Ủng hộ tuỳ tâm sau mốc 3 (Tim chốt 22/10 19:37): nhẹ, không bắt buộc */
.dt-ung-ho{margin:14px 0 4px;padding:14px 16px;border-radius:12px;background:#FFFBF2;border:1px solid #EAD8A8}
.dt-ung-ho p{margin:0 0 6px}
.dt-ung-ho .dt-gop{margin:0}
.dt-gop > summary{font-weight:700}
.dt-gop .dt-pay{margin-top:10px}
.dt-nhan h2{margin-top:4px}
.dt-nhan-tt{padding:10px 12px;border-radius:10px;background:var(--soft,#F4F6FA)}

/* 22/10/2026: trang đăng ký một cột 860px thẳng hàng; phần "Về lớp" thiết kế lại cho lớp Zoom */
.dt-col{max-width:860px}
.dt-top{padding:30px 0 26px;border-bottom:1px solid rgba(255,255,255,.08)}
.dt-top .wrap{gap:8px}
.dt-top .dt-eb{font-size:12.5px;letter-spacing:.16em;color:#C9A24B}
.dt-top h1{font-size:clamp(28px,5vw,40px);line-height:1.12;font-weight:800;letter-spacing:-.01em}
.dt-top .dt-sub{font-size:16px;line-height:1.55;color:#C9CFDA;max-width:640px}
.dt-top .dt-sub a{color:#E2C27A;text-underline-offset:3px}
.dt-vl{padding:44px 0 52px;border-top:1px solid rgba(255,255,255,.08)}
.dt-vl .wrap{gap:0}
.dt-vl-head{display:grid;gap:10px;margin-bottom:26px}
.dt-vl-head h2{font-size:clamp(28px,5vw,40px);font-weight:800;letter-spacing:-.01em}
.dt-vl-head .dt-sub{font-size:17px;line-height:1.6;max-width:640px}
.dt-vl .dt-chang{margin:0;gap:14px}
.dt-vl .dt-chang li{position:relative;padding:18px 18px 18px;border:1px solid rgba(255,255,255,.12);border-top:3px solid #C9A24B;border-radius:10px;background:rgba(255,255,255,.035)}
.dt-vl .dt-chang b{font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:#C9A24B}
.dt-vl .dt-chang span{font-size:18px;margin:6px 0 6px;line-height:1.3}
.dt-vl .dt-chang small{font-size:15px;color:#C9CFDA;line-height:1.5}
.dt-vl-grid{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:14px;margin-top:14px;align-items:stretch}
.dt-gv{display:flex;gap:16px;align-items:flex-start;align-self:start;padding:20px 18px;border:1px solid rgba(255,255,255,.12);border-radius:10px;background:rgba(255,255,255,.035)}
.dt-gv img{flex:0 0 72px;width:72px;height:72px;border-radius:50%;object-fit:cover;border:2px solid #C9A24B}
.dt-gv-k{margin:0;font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:#C9A24B;font-weight:700}
.dt-gv h3{margin:4px 0 8px;font-size:21px;line-height:1.2}
.dt-gv h3 a{color:#FAF9F7;text-decoration:none}
.dt-gv h3 a:hover{text-decoration:underline;text-underline-offset:3px}
.dt-gv ul{margin:0;padding:0;list-style:none;display:grid;gap:5px}
.dt-gv li{font-size:15px;line-height:1.45;color:#C9CFDA;padding-left:14px;position:relative}
.dt-gv li::before{content:"";position:absolute;left:0;top:.6em;width:6px;height:6px;border-radius:50%;background:#C9A24B}
.dt-loi{display:grid;gap:14px}
.dt-loi-o{display:grid;gap:8px;padding:18px;border:1px solid rgba(255,255,255,.12);border-radius:10px;background:rgba(255,255,255,.035)}
.dt-loi-o p{margin:0;max-width:none}
.dt-loi-k{font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:#C9A24B;font-weight:700}
.dt-loi-t{font-size:18px;font-weight:700;line-height:1.3}
.dt-loi-t b{color:#E2C27A}
.dt-loi-o p:not(.dt-loi-k):not(.dt-loi-t){font-size:15px;line-height:1.5;color:#C9CFDA}
.dt-loi-o .btn{justify-self:start;margin-top:4px}
.btn-ghost-light{background:transparent;color:#FAF9F7;border:1.5px solid rgba(255,255,255,.45)}
.btn-ghost-light:hover{background:rgba(255,255,255,.08)}
@media (max-width:760px){
  .dt-vl{padding:34px 0 40px}
  .dt-vl-grid{grid-template-columns:1fr}
  .dt-vl .dt-chang li{padding:16px}
}
@media (max-width:420px){
  .dt-gv{flex-direction:column}
}

/* Hành trình AI cho mọi người — 5 mốc (22/10/2026) */
.dt-ht{margin:16px 0 4px;padding:16px 16px 14px;border:1px solid #D7DCE5;border-radius:12px;background:linear-gradient(180deg,#FAFBFF 0%,#fff 100%)}
.dt-ht-dau{display:flex;justify-content:space-between;align-items:baseline;gap:12px;flex-wrap:wrap;margin-bottom:8px}
.dt-ht-k{margin:0;font-size:12.5px;letter-spacing:.12em;text-transform:uppercase;font-weight:800;color:#1733C9}
.dt-ht-pt{margin:0;display:flex;align-items:baseline;gap:8px}
.dt-ht-pt strong{font-size:26px;font-weight:800;line-height:1}
.dt-ht-pt span{color:var(--muted);font-size:14px}
.dt-ht-bar{height:8px;border-radius:999px;background:#E6EAF2;overflow:hidden}
.dt-ht-bar span{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,#2448FF,#6C8CFF);transition:width .4s ease}
.dt-moc-ds{list-style:none;margin:14px 0 0;padding:0;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px}
.dt-moc{display:grid;gap:8px;justify-items:center;text-align:center;position:relative}
.dt-moc-dot{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:50%;border:2px solid #C9D0DC;background:#fff;color:var(--muted);font-weight:800;font-size:14px}
.dt-moc-dot svg{width:18px;height:18px}
.dt-moc-xong .dt-moc-dot{border-color:#2448FF;background:#2448FF;color:#fff}
/* Mốc 5 = mốc kết, không phải buổi học: huy hiệu vàng, có nhãn "mốc kết"; khi xong chuyển vàng đậm */
.dt-moc-cuoi .dt-moc-dot{border-style:dashed;border-color:#C9A24B;background:#FFF7E8;color:#9A7A2E}
.dt-moc-cuoi.dt-moc-xong .dt-moc-dot{border-style:solid;border-color:#C9A24B;background:#C9A24B;color:#fff}
.dt-moc-cuoi{padding-left:10px;border-left:1px dashed #E2C27A}
.dt-moc-t b{display:block;font-size:14px;line-height:1.25}
.dt-moc-t b em{display:inline-block;font-style:normal;font-weight:700;font-size:10.5px;letter-spacing:.06em;text-transform:uppercase;color:#9A7A2E;background:#FFF1D6;border-radius:999px;padding:1px 7px;margin-left:4px;vertical-align:middle}
.dt-moc-t small{display:block;color:var(--muted);font-size:12.5px;line-height:1.35;margin-top:2px}
.dt-ht-ghi{margin:12px 0 0}
.dt-lo-trinh{margin:14px 0 0;padding:14px 16px;border-radius:10px;background:#FFF7E8;border:1px solid #E2C27A}
.dt-lo-trinh p{margin:0 0 8px}
.dt-lo-trinh .tk-actions{margin:0}
@media (max-width:640px){
  .dt-moc-ds{grid-template-columns:1fr;gap:8px}
  .dt-moc{grid-template-columns:34px 1fr;justify-items:start;text-align:left;align-items:start;gap:10px}
  .dt-moc-cuoi{padding-left:0;border-left:0;margin-top:6px;padding-top:10px;border-top:1px dashed #E2C27A}
  .dt-moc-t small{font-size:13px}
}
/* Quản trị: cột hành trình */
.dt-qt-chon{display:inline-flex;gap:6px;align-items:center;font-size:14px;margin-bottom:4px}
.dt-qt-moc{display:flex;gap:3px}
.dt-qt-moc i{font-style:normal;display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;border-radius:50%;border:1.5px solid #C9D0DC;font-size:12px;font-weight:700;color:var(--muted)}
.dt-qt-moc i.xong{background:#2448FF;border-color:#2448FF;color:#fff}
.dt-qt-moc i.ket{border-style:dashed;border-color:#C9A24B;color:#9A7A2E;background:#FFF7E8;margin-left:4px}
.dt-qt-moc i.ket.xong{border-style:solid;background:#C9A24B;border-color:#C9A24B;color:#fff}
.dt-qt-moc i svg{width:12px;height:12px}
.dt-qt-chon{padding:2px 8px;border:1px dashed #C9D0DC;border-radius:6px;cursor:pointer}
.dt-qt-chon:has(input:checked){border-style:solid;border-color:#2448FF;background:#F3F5FF}
.dt-td{border-left:4px solid #2448FF}
.dt-td .tk-actions{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.dt-td input[type="text"]{font:inherit;padding:6px 10px;border:1px solid #C9D0DC;border-radius:6px;min-width:220px}
.dt-dn-truoc{margin:14px 0 4px;padding:18px;border-radius:12px;background:#F3F5FF;border:1px solid #C9D2FF}
.dt-dn-truoc h3{margin:0 0 6px;font-size:19px}
.dt-dn-truoc p{margin:0 0 10px}
.dt-dn-truoc .tk-fine{margin:0}
/* Quản trị: dòng lớp đăng ký dưới tên học viên + tóm tắt theo lớp (Tim 22/10 23:53) */
.dt-qt-lop{display:inline-block;margin-top:2px;font-size:13px;font-weight:600;color:#1733C9}
.dt-qt-nhom{display:flex;flex-wrap:wrap;gap:4px 10px;align-items:baseline}
/* Trang đăng ký riêng /dao-tao/zoom/ và /dao-tao/thuc-hanh/ (Tim 23/10) */
.dt-top .dt-sub-phu{margin-top:8px;font-size:15px;opacity:.92}
.dt-sang-th h2{margin-top:6px}