/* Dora Tools UI kit v1 (08/11/2026) — /dora-assets/tools/kit.css
   Dùng chung mọi trang công cụ dorabot.io. Luật + mẫu: docs/dora-tools-ui-kit.md, trang mẫu /tools/ui-kit/.
   - Màu chính #0066FF (trang chủ, brand guide). Font hệ thống (không tải font).
   - Tên lớp t-* giữ đúng tên thành phần cũ của bộ dk-* (đăng kiểm) để công cụ cũ chuyển sang chỉ cần đổi tiền tố.
   - Công cụ chỉ đổi màu nhấn bằng --t-main (ví dụ mã giảm giá màu cam), KHÔNG chép lại khung.
   - Không phụ thuộc Bootstrap. Nút / ô nhập cao tối thiểu 44px. */

:root{
  --t-main:#0066ff;--t-main-d:#0052cc;--t-main-l:#e8f1ff;--t-main-ll:#f3f8ff;
  --t-ink:#1f2a44;--t-mute:#5b6476;--t-line:#dfe4ec;--t-line-d:#c7cfdb;
  --t-bg:#f4f7fb;--t-card:#fff;
  --t-ok:#0f8a5f;--t-ok-l:#eaf8f2;--t-warn:#a96500;--t-warn-l:#fff6e5;--t-bad:#c62828;--t-bad-l:#fdecea;
  --t-zalo:#0068ff;
  --t-r:14px;--t-r-s:10px;
  --t-shadow:0 1px 2px rgba(16,24,40,.05);
  --t-shadow-m:0 8px 28px rgba(0,82,204,.12);
  --t-hero:linear-gradient(135deg,#0052cc 0%,#0066ff 48%,#2f8bff 100%);
  --t-font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;
}
*{box-sizing:border-box}
body{margin:0;background:var(--t-bg);color:var(--t-ink);font:16px/1.55 var(--t-font);-webkit-text-size-adjust:100%}
a{color:var(--t-main)}
a:hover{color:var(--t-main-d)}
img,svg{max-width:100%}
:focus-visible{outline:3px solid rgba(0,102,255,.35);outline-offset:2px}
[hidden]{display:none!important}
h1{font-size:30px;line-height:1.25;margin:8px 0 6px;color:var(--t-ink);font-weight:800;letter-spacing:-.01em}
h2{line-height:1.3}

/* ---------- khung ---------- */
.t-wrap{max-width:980px;margin:0 auto;padding:0 16px}
.t-wrap.wide{max-width:1120px}
.t-top{background:#fff;border-bottom:1px solid var(--t-line);position:relative;z-index:20}
.t-top-in{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:56px;flex-wrap:wrap}
.t-logo{display:inline-flex;align-items:center;gap:8px;text-decoration:none;color:var(--t-ink);font-weight:800;font-size:18px}
.t-logo img{display:block}
.t-nav{display:flex;gap:4px;flex-wrap:wrap;align-items:center}
.t-nav a{color:var(--t-ink);text-decoration:none;padding:6px 10px;border-radius:8px;font-size:15px}
.t-nav a:hover,.t-nav a.on{background:var(--t-main-l);color:var(--t-main)}
.t-nav .t-me{font-weight:600}
.t-crumb{font-size:14px;color:var(--t-mute);margin:14px 0 6px}
.t-crumb a{color:var(--t-mute)}
.t-sub{margin:0 0 12px;color:var(--t-mute)}
.t-foot{margin-top:30px;padding:20px 0 28px;border-top:1px solid var(--t-line);font-size:13px;color:var(--t-mute);background:#fff}
.t-foot a{color:var(--t-mute)}

/* ---------- đầu trang công cụ ---------- */
.t-hero{padding:6px 0 4px}
.t-hero .t-lead{font-size:17px;color:var(--t-mute);margin:0 0 12px;max-width:760px}
.t-badges{display:flex;flex-wrap:wrap;gap:6px;margin:0 0 14px;padding:0;list-style:none}
.t-badges li{display:inline-flex;align-items:center;gap:5px;font-size:13px;font-weight:600;color:var(--t-main-d);background:var(--t-main-l);border-radius:999px;padding:4px 10px}
.t-badges li.ok{color:var(--t-ok);background:var(--t-ok-l)}
/* kiểu nổi bật (theo landing PDF): nền xanh, công cụ đặt trong thẻ trắng nổi */
.t-hero.bold{background:var(--t-hero);color:#fff;padding:28px 0 34px;margin:0 0 8px}
.t-hero.bold h1{color:#fff;font-size:34px}
.t-hero.bold .t-lead{color:rgba(255,255,255,.9)}
.t-hero.bold .t-crumb,.t-hero.bold .t-crumb a{color:rgba(255,255,255,.8)}
.t-hero.bold .t-badges li{background:rgba(255,255,255,.16);color:#fff}
.t-hero.bold .t-card{box-shadow:0 24px 60px rgba(0,30,90,.25);border:0;color:var(--t-ink)}

/* ---------- thẻ, chữ phụ ---------- */
.t-card{background:var(--t-card);border:1px solid var(--t-line);border-radius:var(--t-r);padding:16px;margin:16px 0;box-shadow:var(--t-shadow)}
.t-card h2{font-size:21px;margin:0 0 12px}
.t-card h3{font-size:17px;margin:16px 0 6px}
.t-card > :last-child{margin-bottom:0}
.t-answer{background:#fff;border:1px solid var(--t-line);border-left:5px solid var(--t-main);border-radius:12px;padding:12px 14px;margin:10px 0 16px}
.t-answer p{margin:0}
.t-note{font-size:13px;color:var(--t-mute);margin:10px 0 0}
.t-hint{font-size:13px;color:var(--t-mute)}
.t-err{color:var(--t-bad);font-weight:600}
.t-ok{color:var(--t-ok);font-weight:700}
.t-local{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--t-ok);background:var(--t-ok-l);border-radius:999px;padding:4px 10px;font-weight:600}

/* ---------- nút ---------- */
.t-btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;background:var(--t-main);color:#fff;border:0;border-radius:999px;padding:10px 20px;font:600 16px/1.2 var(--t-font);text-decoration:none;cursor:pointer;min-height:44px;transition:background .15s,box-shadow .15s}
.t-btn:hover{background:var(--t-main-d);color:#fff}
.t-btn.lg{font-size:17px;padding:13px 26px;min-height:50px;box-shadow:var(--t-shadow-m)}
.t-btn.sm{font-size:14px;padding:6px 14px;min-height:36px}
.t-btn.ghost{background:#fff;color:var(--t-main);border:1px solid var(--t-main)}
.t-btn.ghost:hover{background:var(--t-main-l)}
.t-btn.zalo{background:var(--t-zalo)}
.t-btn.zalo:hover{background:#0052cc}
.t-btn.ok{background:var(--t-ok)}
.t-btn[disabled],.t-btn.is-busy{opacity:.6;cursor:default;pointer-events:none}
.t-actions{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.t-form .t-actions{grid-column:1/-1}

/* ---------- ô nhập ---------- */
.t-form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 16px}
.t-form .full{grid-column:1/-1}
.t-f{display:flex;flex-direction:column;gap:4px;font-size:14px;color:var(--t-mute)}
.t-f select,.t-f input[type=number],.t-f input[type=date],.t-f input[type=text],.t-f input[type=email],.t-f input[type=tel],.t-f input[type=url],.t-f textarea,.t-input{width:100%;padding:10px;border:1px solid var(--t-line-d);border-radius:var(--t-r-s);font:16px/1.4 var(--t-font);background:#fff;color:var(--t-ink);min-height:44px}
.t-f textarea,textarea.t-input{min-height:120px;resize:vertical}
.t-f select:focus,.t-f input:focus,.t-f textarea:focus,.t-input:focus{border-color:var(--t-main);outline:0;box-shadow:0 0 0 3px rgba(0,102,255,.15)}
.t-chk{display:flex;align-items:flex-start;gap:8px;font-size:15px;color:var(--t-ink);cursor:pointer}
.t-chk input{width:20px;height:20px;margin:2px 0 0;flex:0 0 auto;accent-color:var(--t-main)}
.t-seg{display:flex;flex-wrap:wrap;gap:6px}
.t-seg button,.t-seg a{border:1px solid var(--t-line);background:#fff;border-radius:999px;padding:8px 14px;font:15px/1.2 var(--t-font);cursor:pointer;color:var(--t-ink);min-height:40px;text-decoration:none;display:inline-flex;align-items:center}
.t-seg button:hover,.t-seg a:hover{border-color:var(--t-main)}
.t-seg button.on,.t-seg a.on{background:var(--t-main);border-color:var(--t-main);color:#fff}
.t-row{display:flex;gap:10px;flex-wrap:wrap;align-items:flex-end}
.t-row > .t-f{flex:1 1 180px}

/* ---------- kéo thả file ---------- */
.t-drop{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;text-align:center;border:2px dashed #9cc2f5;border-radius:var(--t-r);background:var(--t-main-ll);padding:28px 16px;min-height:180px;cursor:pointer;transition:border-color .15s,background .15s}
.t-drop:hover,.t-drop.is-over{border-color:var(--t-main);background:var(--t-main-l)}
.t-drop .ic{width:52px;height:52px;border-radius:14px;background:#fff;display:flex;align-items:center;justify-content:center;color:var(--t-main);box-shadow:var(--t-shadow)}
.t-drop b{font-size:17px}
.t-drop small{color:var(--t-mute);font-size:13px}
.t-drop input[type=file]{position:absolute;width:1px;height:1px;opacity:0;pointer-events:none}
.t-files{list-style:none;margin:12px 0 0;padding:0;display:flex;flex-direction:column;gap:8px}
.t-files li{display:flex;align-items:center;gap:10px;border:1px solid var(--t-line);border-radius:var(--t-r-s);padding:8px 10px;background:#fff;font-size:15px}
.t-files li .n{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.t-files li .s{color:var(--t-mute);font-size:13px;white-space:nowrap}
.t-files li button{border:0;background:none;color:var(--t-mute);cursor:pointer;font-size:18px;min-width:32px;min-height:32px;border-radius:8px}
.t-files li button:hover{background:var(--t-bad-l);color:var(--t-bad)}
.t-progress{height:8px;border-radius:999px;background:var(--t-main-l);overflow:hidden;margin:12px 0 4px}
.t-progress > i{display:block;height:100%;width:0;background:var(--t-main);border-radius:inherit;transition:width .2s}
.t-progress.indet > i{width:35%;animation:t-indet 1.2s ease-in-out infinite}
@keyframes t-indet{0%{transform:translateX(-100%)}100%{transform:translateX(300%)}}

/* ---------- kết quả ---------- */
.t-out{margin-top:16px}
.t-res{border-radius:var(--t-r);padding:16px;background:#eef5ff;border:1px solid #cfe0ff}
.t-res.ok{background:var(--t-ok-l);border-color:#b7e4cf}
.t-res.warn{background:var(--t-warn-l);border-color:#f3d59b}
.t-res.bad{background:var(--t-bad-l);border-color:#f3b8b3}
.t-res .k{font-size:14px;color:var(--t-mute);margin:0}
.t-res .big{font-size:28px;font-weight:800;margin:2px 0;color:var(--t-main);font-variant-numeric:tabular-nums}
.t-res.ok .big{color:var(--t-ok)}
.t-res.warn .big{color:var(--t-warn)}
.t-res.bad .big{color:var(--t-bad)}
.t-res dl{display:grid;grid-template-columns:auto 1fr;gap:6px 12px;margin:12px 0 0;font-size:15px}
.t-res dt{color:var(--t-mute)}
.t-res dd{margin:0}
.t-res ul{margin:6px 0 0;padding-left:20px}
.t-dl{display:flex;align-items:center;gap:12px;flex-wrap:wrap;border:1px solid #b7e4cf;background:var(--t-ok-l);border-radius:var(--t-r);padding:14px 16px;margin-top:12px}
.t-dl .tx{flex:1 1 220px}
.t-dl b{display:block}
.t-dl small{color:var(--t-mute)}
.t-empty{text-align:center;color:var(--t-mute);padding:24px 12px;border:1px dashed var(--t-line-d);border-radius:var(--t-r);background:#fff}
.t-empty b{display:block;color:var(--t-ink);margin-bottom:4px}

/* ---------- bảng ---------- */
.t-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
.t-tbl{width:100%;border-collapse:collapse;font-size:15px}
.t-tbl th,.t-tbl td{border-bottom:1px solid var(--t-line);padding:8px 6px;text-align:left;vertical-align:top}
.t-tbl thead th{background:#eef3fb;font-size:14px}
.t-tbl tr.on td{background:var(--t-ok-l)}
.t-tbl td.n{white-space:nowrap;font-weight:600}

/* ---------- khối landing (theo thứ tự chuẩn: quy trình -> tính năng/so sánh -> hướng dẫn -> hỏi đáp -> trang con -> liên quan) ---------- */
.t-sec{margin:28px 0}
.t-sec > h2{font-size:24px;margin:0 0 6px}
.t-sec > .t-sub{margin-bottom:16px}
.t-proc{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;counter-reset:t-proc}
.t-proc li{counter-increment:t-proc;background:#fff;border:1px solid var(--t-line);border-radius:var(--t-r);padding:16px 16px 14px;position:relative}
.t-proc li::before{content:counter(t-proc);display:flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:50%;background:var(--t-main);color:#fff;font-weight:800;margin-bottom:8px}
.t-proc b{display:block;font-size:16px;margin-bottom:2px}
.t-proc p{margin:0;font-size:14px;color:var(--t-mute)}
.t-feat{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:12px}
.t-feat > div{background:#fff;border:1px solid var(--t-line);border-radius:var(--t-r);padding:16px}
.t-feat .ic{width:42px;height:42px;border-radius:12px;background:var(--t-main-l);color:var(--t-main);display:flex;align-items:center;justify-content:center;margin-bottom:8px;font-size:22px}
.t-feat b{display:block;font-size:16px;margin-bottom:2px}
.t-feat p{margin:0;font-size:14px;color:var(--t-mute)}
.t-cmp{width:100%;border-collapse:separate;border-spacing:0;font-size:15px;background:#fff;border:1px solid var(--t-line);border-radius:var(--t-r);overflow:hidden}
.t-cmp th,.t-cmp td{padding:10px 12px;border-bottom:1px solid var(--t-line);text-align:left;vertical-align:top}
.t-cmp tr:last-child td{border-bottom:0}
.t-cmp thead th{background:#eef3fb;font-size:14px}
.t-cmp th.us,.t-cmp td.us{background:var(--t-main-ll);font-weight:600}
.t-cmp thead th.us{background:var(--t-main);color:#fff}
.t-cmp .y{color:var(--t-ok);font-weight:700}
.t-cmp .no{color:var(--t-mute)}
.t-prose{font-size:16px}
.t-prose h2{font-size:22px;margin:24px 0 8px}
.t-prose h3{font-size:18px;margin:18px 0 6px}
.t-prose p,.t-prose ul,.t-prose ol{margin:0 0 12px}
.t-prose li{margin:4px 0}
.t-prose img{border-radius:12px;border:1px solid var(--t-line);height:auto}
.t-steps{margin:8px 0;padding-left:20px}
.t-steps li{margin:4px 0}
.t-types{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:10px;margin:0;padding:0;list-style:none}
.t-types a{display:block;border:1px solid var(--t-line);border-radius:12px;padding:10px 12px;text-decoration:none;color:var(--t-ink);background:#fff;height:100%}
.t-types a:hover{border-color:var(--t-main)}
.t-types b{display:block;color:var(--t-main);font-size:15px}
.t-types span{font-size:13px;color:var(--t-mute)}
.t-types a.cur{border-color:var(--t-main);background:var(--t-main-ll)}
.t-faq details{border-bottom:1px solid var(--t-line);padding:10px 0}
.t-faq details:last-child{border-bottom:0}
.t-faq summary{cursor:pointer;font-weight:600;list-style-position:outside}
.t-faq summary:hover{color:var(--t-main)}
.t-faq p{margin:8px 0 0}
.t-src{font-size:14px}
.t-src li{margin:4px 0}
.t-cta{display:flex;gap:14px;align-items:center;flex-wrap:wrap;background:var(--t-hero);color:#fff;border-radius:var(--t-r);padding:18px 20px;margin:24px 0}
.t-cta div{flex:1 1 260px}
.t-cta b{display:block;font-size:18px}
.t-cta p{margin:4px 0 0;color:rgba(255,255,255,.88);font-size:14px}
.t-cta .t-btn{background:#fff;color:var(--t-main)}
.t-cta .t-btn:hover{background:var(--t-main-l)}
.t-xl{display:flex;gap:12px;align-items:center;flex-wrap:wrap;background:#fff;border:1px solid var(--t-line);border-radius:var(--t-r);padding:14px;margin:16px 0}
.t-xl div{flex:1 1 260px}
.t-xl p{margin:4px 0;font-size:14px;color:var(--t-mute)}
.t-ad{margin:16px 0;min-height:100px}

/* ---------- thông báo nổi, thanh dưới điện thoại ---------- */
.t-toast{position:fixed;left:50%;bottom:20px;transform:translateX(-50%) translateY(20px);background:#1f2a44;color:#fff;border-radius:12px;padding:10px 16px;font-size:15px;box-shadow:0 10px 30px rgba(0,0,0,.2);opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;z-index:1000;max-width:calc(100% - 32px)}
.t-toast.on{opacity:1;transform:translateX(-50%) translateY(0)}
.t-toast.bad{background:var(--t-bad)}
.t-sticky{display:none}
@media (max-width:640px){
  .t-sticky.on{display:flex;gap:8px;position:fixed;left:0;right:0;bottom:0;padding:10px 12px calc(10px + env(safe-area-inset-bottom));background:#fff;border-top:1px solid var(--t-line);box-shadow:0 -6px 20px rgba(16,24,40,.08);z-index:900}
  .t-sticky.on .t-btn{flex:1}
  body.t-has-sticky{padding-bottom:76px}
}

/* ---------- Công cụ liên quan (helpers/related-tools.php .dbrt) theo màu kit ---------- */
.t-kit .dbrt{max-width:980px}
.t-kit .dbrt h2{color:var(--t-ink);font-size:22px}
.t-kit .dbrt-card:hover{border-color:var(--t-main);box-shadow:var(--t-shadow-m)}
.t-kit .dbrt-ico{background:var(--t-main-l)}
.t-kit .dbrt-ico svg [stroke="#6366f1"],.t-kit .dbrt-ico svg[stroke="#6366f1"]{stroke:var(--t-main)}
.t-kit .dbrt-ico svg [fill="#6366f1"],.t-kit .dbrt-ico svg[fill="#6366f1"]{fill:var(--t-main)}
@media (prefers-color-scheme:dark){.t-kit .dbrt h2{color:var(--t-ink)}.t-kit .dbrt-card{background:#fff;border-color:#e5e7eb}.t-kit .dbrt-title{color:#111827}.t-kit .dbrt-ico{background:var(--t-main-l)}}

@media (max-width:640px){
  /* menu cong cu: 1 dong cuon ngang duoi logo (truoc day xuong 2-3 dong, day cong cu xuong) */
  .t-top-in{gap:0;padding-top:4px}
  .t-nav{width:calc(100% + 32px);margin:0 -16px;padding:0 12px 6px;flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch}
  .t-nav::-webkit-scrollbar{display:none}
  .t-nav a{white-space:nowrap;flex:0 0 auto}
  h1{font-size:24px}
  .t-hero.bold{padding:20px 0 24px}
  .t-hero.bold h1{font-size:26px}
  .t-form{grid-template-columns:1fr}
  .t-res .big{font-size:24px}
  .t-tbl,.t-cmp{font-size:14px}
  .t-sec > h2{font-size:21px}
}
@media print{.t-top,.t-foot,.t-ad,.dbrt,.t-sticky,.t-cta{display:none!important}body{background:#fff}}