/* ===========================================================
   Gia sư N5 · Dũng Mori — giao diện bám theo testjft.com
   Cùng bảng màu (xanh #0E6B4A + cam #EC6E23), cùng font
   Be Vietnam Pro / Noto Sans JP, cùng kiểu thẻ bo tròn 16-18px.
   =========================================================== */
:root{
  --brand:#0E6B4A; --brand-deep:#128A4E; --brand-bright:#57D061;
  --soft:#E6F9EA; --soft2:#F3FDF6; --accent:#EC6E23; --accent-deep:#D85F16;
  --line:#dcefe0; --ink:#12241d; --muted:#4d6157; --grey:#89998f;
  --green:#1c9a55; --red:#d64541; --amber:#a2530f; --bg:#f2f7f4;
}
*{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px}
body{font-family:'Be Vietnam Pro','Hiragino Sans','Noto Sans JP',sans-serif;color:var(--ink);
     background:var(--bg);min-height:100vh;line-height:1.55}
.jp{font-family:'Noto Sans JP','Hiragino Sans',sans-serif}
a{color:var(--brand);text-decoration:none}
button,input,select,textarea{font-family:inherit}
.hidden{display:none!important}
::selection{background:#cfe8da}

/* ---------- HEADER ---------- */
.top{background:var(--brand-deep);color:#fff;position:sticky;top:0;z-index:20;box-shadow:0 2px 12px rgba(13,52,35,.25)}
.topin{max-width:1100px;margin:0 auto;padding:9px 20px;display:flex;align-items:center;gap:12px;flex-wrap:wrap;min-height:60px}
.brand{display:flex;align-items:center;gap:11px;margin-right:auto;color:#fff}
.brand .logo{width:38px;height:38px;border-radius:7px;background:var(--accent);display:grid;place-items:center;
  font-family:'Noto Sans JP','Hiragino Sans',sans-serif;font-weight:700;font-size:25px;line-height:1;color:#fff;flex:none}
.brand .bt{font-weight:800;font-size:21px;line-height:1;letter-spacing:-.025em}
.brand .bs{font-size:11px;opacity:.78;letter-spacing:.3px;margin-top:3px}
.htabs{display:flex;gap:4px;flex-wrap:wrap}
.htabs a{color:#fff;font-size:14px;font-weight:600;padding:8px 15px;border-radius:999px;opacity:.85}
.htabs a:hover{background:rgba(255,255,255,.14);opacity:1}
.htabs a.on{background:#fff;color:var(--brand);opacity:1}
.who{display:flex;align-items:center;gap:10px;font-size:13.5px}
.who b{font-weight:700}
.who a{color:#ffd9bf;cursor:pointer;font-weight:600}

/* ---------- KHUNG ---------- */
.wrap{max-width:1100px;margin:22px auto 60px;padding:0 20px;display:flex;flex-direction:column;gap:18px}
.wrap.narrow{max-width:720px}
.card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px;box-shadow:0 1px 3px rgba(20,71,47,.05)}
h1{font-size:25px;line-height:1.25;letter-spacing:-.02em}
h2{font-size:18px;letter-spacing:-.01em}
.lead{color:var(--muted);font-size:14.5px;margin-top:6px}
.small{font-size:13px;color:var(--muted)}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12.5px}

/* Hero — dải xanh gradient giống khối giới thiệu của testjft */
.hero{background:linear-gradient(135deg,var(--brand) 0%,var(--brand-deep) 55%,#0b5c3f 100%);
      color:#fff;border-radius:20px;padding:28px 28px 26px;position:relative;overflow:hidden}
.hero:after{content:'';position:absolute;right:-60px;top:-70px;width:230px;height:230px;border-radius:50%;
      background:rgba(87,208,97,.18)}
.hero h1{font-size:29px;color:#fff;position:relative;z-index:1}
.hero p{color:#d8f2e2;font-size:15px;margin-top:9px;max-width:640px;position:relative;z-index:1}
.hero .pills{display:flex;gap:9px;flex-wrap:wrap;margin-top:16px;position:relative;z-index:1}
.hero .pill{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.22);border-radius:999px;
      padding:7px 15px;font-size:13.5px;font-weight:600}

/* ---------- Ô SỐ LIỆU ---------- */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(158px,1fr));gap:12px}
.stat{background:var(--soft2);border:1px solid var(--line);border-radius:14px;padding:14px 16px}
.stat .v{font-size:26px;font-weight:800;line-height:1.15;letter-spacing:-.02em}
.stat .l{font-size:12.5px;color:var(--muted);margin-top:3px}
.stat.hi{background:#FFF6EF;border-color:#f6dcc6}
.stat.hi .v{color:var(--accent-deep)}

/* ---------- FORM ---------- */
label{display:block;font-weight:600;font-size:13.5px;margin-bottom:6px}
input,select,textarea{width:100%;padding:12px 14px;border:1.5px solid var(--line);border-radius:12px;
  font-size:15px;background:#fff;color:var(--ink);transition:border-color .15s}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent)}
.field{margin-bottom:14px}
.row{display:flex;gap:13px;flex-wrap:wrap}
.row>*{flex:1;min-width:190px}
.btn{background:var(--accent);color:#fff;border:0;font-weight:700;font-size:15px;padding:13px 26px;
  border-radius:12px;cursor:pointer;transition:filter .15s,transform .05s}
.btn:hover{filter:brightness(1.06)}
.btn:active{transform:translateY(1px)}
.btn:disabled{opacity:.45;cursor:default}
.btn.ghost{background:#fff;color:var(--brand);border:1.5px solid var(--line);font-size:13.5px;padding:9px 16px}
.btn.ghost:hover{border-color:var(--brand);background:var(--soft2)}
.btn.sm{padding:8px 15px;font-size:13.5px}
.btn.green{background:var(--brand-deep)}
.msg{font-size:14px;margin-top:11px}
.msg.err{color:var(--red);font-weight:600}
.msg.ok{color:var(--green);font-weight:600}

/* Bước 1-2-3 */
.step{display:flex;align-items:center;gap:10px;margin:2px 0 14px}
.step .no{width:27px;height:27px;border-radius:50%;background:var(--brand);color:#fff;display:grid;place-items:center;
  font-size:14px;font-weight:800;flex:none}
.step h2{margin:0}

/* Thẻ chọn (nội dung học, lớp, bảng chữ…) */
.pick{display:flex;gap:11px;flex-wrap:wrap}
.pick label{flex:1;min-width:165px;border:1.5px solid var(--line);border-radius:14px;padding:14px 16px;cursor:pointer;
  margin:0;font-weight:700;font-size:14.5px;background:#fff;display:flex;align-items:center;gap:10px;transition:all .15s}
.pick label:hover{border-color:var(--brand-bright)}
.pick label.on{border-color:var(--accent);background:#FFF6EF;box-shadow:0 0 0 3px rgba(236,110,35,.09)}
.pick label input{width:auto;flex:none}
.pick .ic{font-size:20px}
.pick .sub{display:block;font-weight:500;font-size:12px;color:var(--muted);margin-top:2px}

/* Chương ngữ pháp */
.chgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(215px,1fr));gap:10px}
.chcard{border:1.5px solid var(--line);border-radius:14px;padding:12px 14px;background:#fff;cursor:pointer;
  text-align:left;transition:all .15s;display:flex;flex-direction:column;gap:3px}
.chcard:hover{border-color:var(--brand-bright);transform:translateY(-1px)}
.chcard.on{border-color:var(--accent);background:#FFF6EF;box-shadow:0 0 0 3px rgba(236,110,35,.09)}
.chcard .no{font-size:11.5px;font-weight:800;color:var(--accent-deep);letter-spacing:.06em}
.chcard .jp{font-family:'Noto Sans JP','Hiragino Sans',sans-serif;font-weight:700;font-size:14.5px;line-height:1.35}
.chcard .vi{font-size:12.5px;color:var(--muted)}

/* Danh sách mẫu ngữ pháp */
.grbox{border:1.5px solid var(--line);border-radius:14px;overflow:hidden;background:#fff}
.gritem{display:flex;gap:11px;align-items:center;padding:11px 15px;border-bottom:1px solid var(--line);cursor:pointer}
.gritem:last-child{border-bottom:none}
.gritem:hover{background:var(--soft2)}
.gritem.on{background:#FFF6EF}
.gritem input{width:auto;flex:none}
.gritem .t{font-family:'Noto Sans JP','Hiragino Sans',sans-serif;font-weight:600;font-size:14.5px}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}
.chip{background:#FFF1E6;color:#8a3d00;border-radius:999px;padding:6px 13px;font-size:13px;font-weight:600;cursor:pointer}

/* Chọn khung giờ */
.dayrow{display:flex;gap:14px;padding:12px 0;border-bottom:1px solid var(--line);align-items:flex-start}
.dayrow:last-child{border-bottom:none}
.dayname{min-width:112px;font-weight:700;font-size:13.5px;padding-top:7px}
.slots{display:flex;gap:8px;flex-wrap:wrap;flex:1}
.slot{background:#fff;border:1.5px solid var(--line);border-radius:11px;padding:9px 14px;cursor:pointer;
  font-size:14.5px;font-weight:700;color:var(--ink);transition:all .12s}
.slot:hover{border-color:var(--brand-bright)}
.slot.on{background:var(--accent);border-color:var(--accent);color:#fff}

/* ---------- THẺ BUỔI HỌC / YÊU CẦU ---------- */
.item{border:1px solid var(--line);border-radius:16px;padding:17px 19px;background:#fff;margin-bottom:12px;
  box-shadow:0 1px 3px rgba(20,71,47,.04)}
.item.wait{border-left:4px solid var(--accent)}
.item.done{border-left:4px solid var(--green)}
.item.bad{border-left:4px solid var(--red)}
.item .h{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:7px}
.item .when{font-weight:800;font-size:16px;letter-spacing:-.01em}
.tag{display:inline-block;padding:4px 11px;border-radius:999px;font-size:12px;font-weight:700}
.tag.cho_nhan,.tag.da_day_cho_xac_nhan{background:#FDF6E8;color:var(--amber)}
.tag.da_nhan{background:#E8F1FD;color:#1c5fb0}
.tag.da_cham_cong{background:var(--soft);color:var(--green)}
.tag.tranh_chap{background:#FDECEC;color:var(--red)}
.tag.khong_den,.tag.het_han{background:#efefef;color:#666}
.tag.huy{background:#efefef;color:#999}
.tag.paid{background:#EDE8FD;color:#5533cc}
.proof{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-top:9px}
.proof img{width:74px;height:54px;object-fit:cover;border-radius:9px;border:1px solid var(--line)}
.zoomlink{display:inline-flex;align-items:center;gap:6px;background:var(--soft);border-radius:9px;padding:6px 12px;
  font-size:13px;font-weight:600;margin-top:7px;word-break:break-all}

/* ---------- BẢNG ---------- */
table{width:100%;border-collapse:collapse;font-size:13.5px}
th,td{text-align:left;padding:10px 9px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-size:11.5px;text-transform:uppercase;letter-spacing:.05em;color:var(--grey);font-weight:700}
tr:last-child td{border-bottom:none}

/* ---------- HỘP THÔNG BÁO ---------- */
.ok-box{background:var(--soft);border:1px solid #b9e7c8;border-radius:16px;padding:20px}
.warn-box{background:#FDF6E8;border:1px solid #f0e2c0;border-radius:16px;padding:18px;color:#6b5a2e}
.info-box{background:var(--soft2);border:1px solid var(--line);border-radius:14px;padding:15px 17px}
.otpbox{background:#fff;border:2px dashed var(--accent);border-radius:14px;padding:14px 18px;text-align:center;margin-top:12px}
.otpbox .code{font-size:31px;font-weight:800;letter-spacing:.22em;color:var(--accent-deep);font-family:ui-monospace,Menlo,monospace}

/* Sao đánh giá */
.stars b{font-size:31px;color:#dcdcdc;cursor:pointer;line-height:1;transition:transform .1s}
.stars b.on{color:#f5a623}
.stars b:hover{transform:scale(1.15)}

@media (max-width:640px){
  .wrap{padding:0 14px;margin-top:14px}
  .card{padding:18px;border-radius:16px}
  .hero{padding:22px 20px}
  .hero h1{font-size:23px}
  h1{font-size:21px}
  .dayname{min-width:100%}
  .dayrow{flex-direction:column;gap:6px}
}

/* ===== Thông báo nổi (thay cho alert của trình duyệt) ===== */
.toast{position:fixed;left:50%;bottom:26px;transform:translateX(-50%) translateY(140%);
  background:#12241d;color:#fff;padding:14px 22px;border-radius:14px;font-size:14.5px;font-weight:600;
  box-shadow:0 12px 34px rgba(10,40,26,.35);z-index:90;max-width:min(560px,92vw);line-height:1.5;
  transition:transform .28s cubic-bezier(.2,.9,.3,1.2);white-space:pre-line}
.toast.show{transform:translateX(-50%) translateY(0)}
.toast.ok{background:#0E6B4A}
.toast.err{background:#b8332f}

/* ===== spec v5: lịch trống kiểu Calendly ===== */
.tag.da_dat{background:#E8F1FD;color:#1c5fb0}
.tag.huy_gv{background:#FDECEC;color:#b8332f}
.tag.trong{background:var(--soft);color:var(--green)}
.tag.da_huy{background:#efefef;color:#999}

/* nút khung giờ có kèm tên gia sư */
.slot.big{display:flex;flex-direction:column;align-items:flex-start;gap:1px;padding:9px 15px;min-width:126px}
.slot.big .g{font-size:15.5px;font-weight:800;letter-spacing:-.01em}
.slot.big .m{font-size:11.5px;font-weight:600;color:var(--muted)}
.slot.big.on .m{color:#ffe6d3}
.slot.mine{background:var(--soft2)}
.slot[disabled]{opacity:.4;cursor:default}

/* thanh ngân sách thời gian khi chọn mẫu ngữ pháp */
.budget{display:flex;align-items:center;gap:12px;background:var(--soft2);border:1px solid var(--line);
  border-radius:14px;padding:12px 16px;margin:14px 0;position:sticky;bottom:10px;z-index:5;
  box-shadow:0 2px 10px rgba(20,71,47,.06)}
.budget .bar{flex:1;height:10px;background:#e3ede7;border-radius:99px;overflow:hidden}
.budget .fill{height:100%;background:var(--brand-bright);border-radius:99px;transition:width .2s,background .2s}
.budget.full .fill{background:var(--accent)}
.budget .n{font-size:13.5px;font-weight:700;white-space:nowrap}
.budget .n small{display:block;font-weight:500;color:var(--muted);font-size:11.5px}

/* nhóm mẫu ngữ pháp theo phần A/B/C */
.phhead{background:var(--soft);padding:8px 15px;font-size:12px;font-weight:800;letter-spacing:.05em;
  color:var(--brand);text-transform:uppercase;border-bottom:1px solid var(--line)}
.phhead .jp{font-family:'Noto Sans JP','Hiragino Sans',sans-serif;font-weight:600;text-transform:none;
  letter-spacing:0;color:var(--muted);font-size:12.5px}
.gritem .p{margin-left:auto;font-size:11.5px;color:var(--grey);white-space:nowrap;font-weight:600}
.gritem.off{opacity:.42}
.gritem.off:hover{background:#fff}

/* lịch rảnh của gia sư */
.avday{border:1px solid var(--line);border-radius:14px;padding:12px 15px;margin-bottom:10px;background:#fff}
.avday .d{font-weight:800;font-size:14px;margin-bottom:9px}
.avslot{display:inline-flex;align-items:center;gap:8px;border:1.5px solid var(--line);border-radius:11px;
  padding:7px 12px;margin:0 8px 8px 0;font-size:14px;font-weight:700;background:#fff}
.avslot.booked{border-color:#bcd6f5;background:#F1F7FE}
.avslot.gone{opacity:.5;text-decoration:line-through}
.avslot .x{cursor:pointer;color:var(--grey);font-weight:800;font-size:15px;line-height:1}
.avslot .x:hover{color:var(--red)}
.avslot .hv{font-size:11.5px;font-weight:600;color:#1c5fb0}
.quickgio{display:flex;gap:7px;flex-wrap:wrap}
.quickgio .g{border:1.5px solid var(--line);border-radius:10px;padding:7px 13px;font-size:14px;font-weight:700;
  cursor:pointer;background:#fff}
.quickgio .g.on{background:var(--brand-deep);border-color:var(--brand-deep);color:#fff}

/* Ô nhắn tin khi gia sư huỷ buổi (lý do + lời xin lỗi gửi học viên) */
.huybox{margin-top:12px;border:1.5px solid #f6dcc6;background:#FFF9F4;border-radius:14px;padding:14px 16px}
.huybox textarea{background:#fff}
.huybox .chips{margin-top:9px}

/* Lời nhắn của gia sư hiện trên thẻ buổi học của học viên */
.loinhan{background:#FFF6EF;border-left:3px solid var(--accent);border-radius:0 11px 11px 0;
  padding:11px 14px;margin-top:9px;font-size:14px;line-height:1.55}
.loinhan .ai{display:block;font-size:12px;font-weight:700;color:var(--accent-deep);margin-bottom:3px}

/* ===== Chương dạng xổ xuống: bấm vào chương là mở nội dung ngay bên dưới ===== */
.acclist{display:flex;flex-direction:column;gap:8px;margin-top:8px}
.acc{border:1.5px solid var(--line);border-radius:14px;background:#fff;overflow:hidden;transition:border-color .15s}
.acc.on{border-color:var(--accent);box-shadow:0 0 0 3px rgba(236,110,35,.09)}
.acc-head{width:100%;display:flex;align-items:center;gap:12px;padding:13px 16px;background:#fff;border:0;
  cursor:pointer;text-align:left;font-family:inherit}
.acc-head:hover{background:var(--soft2)}
.acc.on .acc-head{background:#FFF6EF}
.acc-head .no{font-size:11.5px;font-weight:800;color:var(--accent-deep);letter-spacing:.06em;
  min-width:104px;flex:none}
.acc-head .ten{flex:1;display:flex;flex-direction:column;gap:2px}
.acc-head .ten .jp{font-family:'Noto Sans JP','Hiragino Sans',sans-serif;font-weight:700;font-size:14.5px;line-height:1.35}
.acc-head .ten .vi{font-size:12.5px;color:var(--muted)}
.acc-head .dem{font-size:12px;font-weight:700;color:var(--accent-deep);background:#FFF1E6;border-radius:999px;
  padding:3px 10px;white-space:nowrap}
.acc-head .mark{font-size:13px;color:var(--grey);flex:none;transition:transform .18s}
.acc.on .acc-head .mark{transform:rotate(180deg)}
.acc-body{border-top:1px solid var(--line);padding:14px 16px 16px}
.acc-body .grbox{border-radius:12px}
.acc-body > label:first-child{margin-bottom:8px}
@media (max-width:640px){
  .acc-head{gap:9px;padding:12px 13px}
  .acc-head .no{min-width:auto;font-size:11px}
}

/* Ô kéo thả file danh sách học viên */
.uploadbox{display:flex;gap:14px;align-items:center;border:2px dashed var(--line);border-radius:16px;
  padding:18px 20px;background:var(--soft2);transition:all .15s}
.uploadbox.over{border-color:var(--accent);background:#FFF6EF}
.uploadbox .ic{font-size:32px;flex:none}
.linkfile{display:inline;color:var(--accent-deep);font-weight:700;cursor:pointer;text-decoration:underline;margin:0}
details summary{color:var(--muted)}