/* ===== Nền tảng ===== */
:root{
  --navy:#1f2a63;
  --navy-700:#16204e;
  --accent:#e4002b;
  --accent-soft:#fdecef;
  --teal:#0f8a7e;
  --ink:#1b1f2a;
  --muted:#5f6779;
  --line:#e2e5ee;
  --bg:#f4f6fb;
  --card:#ffffff;
  --ok:#0f8a7e;
  --warn:#b4690e;
  --radius:14px;
  --shadow:0 2px 4px rgba(24,32,63,.05), 0 12px 28px rgba(24,32,63,.07);
}

*{box-sizing:border-box}
html,body{margin:0}
body{
  font-family:"Segoe UI",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  background:var(--bg); color:var(--ink); font-size:15px; line-height:1.55;
}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
[hidden]{display:none !important}

/* ===== Header ===== */
.site-header{background:#fff;color:var(--ink);border-bottom:3px solid var(--navy);box-shadow:0 1px 3px rgba(24,32,63,.06)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-block:14px}
.brand{display:flex;align-items:center;gap:16px;text-decoration:none}
.brand-logo{height:52px;width:auto;flex:none;display:block}

/* ===== Thanh cố định: tiêu đề trang + tiến trình ===== */
.topbar{
  position:sticky;top:0;z-index:30;background:var(--bg);
  border-bottom:1px solid transparent;transition:box-shadow .18s, border-color .18s;
}
.topbar.stuck{border-bottom-color:var(--line);box-shadow:0 6px 18px rgba(24,32,63,.08)}
.topbar-inner{padding-block:16px;transition:padding .18s}
.topbar.stuck .topbar-inner{padding-block:10px}

.page-head{border-left:5px solid var(--accent);padding-left:14px;margin-bottom:14px;transition:margin .18s}
.page-title{margin:0;font-size:24px;font-weight:800;color:var(--navy);line-height:1.25;transition:font-size .18s}
.page-sub{margin:6px 0 0;font-size:15.5px;font-weight:600;color:var(--accent);transition:font-size .18s}
/* Khi dính ở đầu trang thì thu gọn lại cho đỡ chiếm chỗ */
.topbar.stuck .page-head{margin-bottom:10px}
.topbar.stuck .page-title{font-size:17px}
.topbar.stuck .page-sub{font-size:13px}
.hotlines{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.hotline-label{font-size:12.5px;color:var(--muted);white-space:nowrap}
.hotline{color:var(--navy);text-decoration:none;font-size:13.5px;font-weight:700;border:1px solid var(--line);padding:7px 12px;border-radius:999px;white-space:nowrap}
.hotline:hover{background:var(--navy);border-color:var(--navy);color:#fff}

/* ===== Stepper ===== */
.stepper{
  list-style:none;display:flex;gap:6px;margin:0;padding:0;
  overflow-x:auto;
}
.step{display:flex;align-items:center;gap:8px;flex:1;min-width:130px;color:var(--muted);font-size:13.5px}
.step .dot{
  width:28px;height:28px;border-radius:50%;display:grid;place-items:center;
  background:#e6e9f2;color:var(--muted);font-weight:700;font-size:13px;flex:none;
}
.step .label{white-space:nowrap}
.step.active{color:var(--navy);font-weight:700}
.step.active .dot{background:var(--navy);color:#fff}
.step.done .dot{background:var(--ok);color:#fff}
.step.done{color:var(--ok)}

/* ===== Layout ===== */
.layout{display:grid;grid-template-columns:1fr 300px;gap:20px;align-items:start;padding-bottom:40px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.panel{padding:24px}
.card-title{margin:0 0 20px;font-size:19px;color:var(--navy)}

/* ===== Form ===== */
.field{margin-bottom:18px}
label{display:block;font-weight:600;font-size:14px;margin-bottom:6px}
.req{color:var(--accent)}
input[type=text],input[type=tel],input[type=email],input[type=number],input[type=date],select{
  width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:10px;
  font:inherit;color:inherit;background:#fff;
}
input:focus,select:focus{outline:none;border-color:var(--navy);box-shadow:0 0 0 3px rgba(31,42,99,.12)}
input.invalid,select.invalid{border-color:var(--accent);background:var(--accent-soft)}
.hint{margin:6px 0 0;font-size:12.5px;color:var(--muted)}
.hint.center{text-align:center}
.error{margin:6px 0 0;font-size:12.5px;color:var(--accent);font-weight:600}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}

.group{border:1px solid var(--line);border-radius:12px;padding:18px;margin:0 0 20px}
.group legend{font-weight:700;color:var(--navy);padding:0 8px;font-size:14.5px}
.group-parent{background:#fbfcff;border-color:#cfd7ef}
.group-note{margin:0 0 14px;font-size:13px;color:var(--muted)}

.checkbox{display:flex;gap:10px;align-items:flex-start;font-weight:400;font-size:13.5px;margin-top:6px;cursor:pointer}
.checkbox input{margin-top:3px;width:17px;height:17px;flex:none;accent-color:var(--navy)}

/* ===== Bảng danh sách địa điểm ===== */
.table-tools{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:10px}
.table-tools input[type=search]{width:320px;max-width:100%;padding:9px 12px;border:1px solid var(--line);border-radius:10px;font:inherit}
.table-note{font-size:12.5px;color:var(--muted)}
.table-scroll{border:1px solid var(--line);border-radius:12px;overflow-x:auto}
.dd-table{width:100%;border-collapse:collapse;font-size:13.5px;min-width:620px}
.dd-table thead th{
  background:#eef1f8;color:var(--navy);
  text-align:left;font-size:12px;text-transform:uppercase;letter-spacing:.4px;
  padding:10px 12px;border-bottom:1px solid var(--line);white-space:nowrap;
}
.dd-table td{padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:middle}
.dd-table tbody tr{cursor:pointer;transition:background .12s}
.dd-table tbody tr:hover{background:#f7f9ff}
.dd-table tbody tr:focus-visible{outline:2px solid var(--navy);outline-offset:-2px}
.dd-table tbody tr.focus{background:#f2f5ff}
.dd-table tbody tr.selected{background:#eaf6f3}
.dd-table tbody tr.selected td{border-bottom-color:#bfe0da}
.dd-table tbody tr.selected .btn-chon{background:var(--ok);border-color:var(--ok);color:#fff}
.dd-table .c-stt{width:52px;color:var(--muted);text-align:center}
.dd-table .c-ma{width:120px}
.dd-table .c-ma code{background:#f3f5fb;border:1px solid var(--line);border-radius:6px;padding:2px 6px;font-size:12.5px}
.dd-table .c-ten{width:130px;font-weight:700;color:var(--navy)}
.dd-table .c-dc{color:var(--muted);min-width:260px}
.dd-table .c-act{width:96px;text-align:right}
.btn-chon{padding:6px 14px;font-size:12.5px;background:#fff;border:1px solid var(--navy);color:var(--navy);border-radius:8px;white-space:nowrap}
.btn-chon:hover{background:var(--navy);color:#fff}
.tag{display:inline-block;background:var(--accent-soft);color:var(--accent);border-radius:5px;padding:1px 6px;font-size:11px;font-weight:700;vertical-align:middle}
.empty-row{margin:10px 0 0;font-size:13px;color:var(--muted);text-align:center}

/* ===== Lựa chọn ngày / ca ===== */
.option-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px}
.option-list{display:grid;gap:10px}
.opt{
  border:1px solid var(--line);border-radius:12px;background:#fff;padding:12px 14px;
  cursor:pointer;text-align:left;font:inherit;color:inherit;transition:.15s;
  display:flex;justify-content:space-between;align-items:center;gap:12px;
}
.opt:hover:not(:disabled){border-color:var(--navy);background:#f7f9ff}
.opt.selected{border-color:var(--navy);background:#eef2ff;box-shadow:0 0 0 2px rgba(31,42,99,.18)}
.opt:disabled{opacity:.5;cursor:not-allowed;background:#f6f7fa}
.opt .o-main{font-weight:700;font-size:14.5px}
.opt .o-sub{font-size:12.5px;color:var(--muted)}
.opt .o-right{text-align:right;font-size:12.5px;white-space:nowrap}
.slot-ok{color:var(--ok);font-weight:600}
.slot-low{color:var(--warn);font-weight:600}
.slot-full{color:var(--accent);font-weight:600}

.notice{
  margin-top:12px;border-radius:10px;padding:12px 14px;font-size:13.5px;
  background:#eef7f5;border:1px solid #bfe0da;color:#0b5f56;
}
.notice.minor{background:#fff6e8;border-color:#f1d5a5;color:#8a5a06}

/* ===== Nút ===== */
.actions{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:22px}
.actions.center{justify-content:center}
.pay-waiting{display:inline-flex;align-items:center;gap:10px;font-size:13.5px;color:var(--navy);font-weight:600}
.pulse-dot{width:10px;height:10px;border-radius:50%;background:#0b5f56;box-shadow:0 0 0 0 rgba(11,95,86,.4);animation:pulse-ring 1.8s infinite;flex:none}
@keyframes pulse-ring{0%{box-shadow:0 0 0 0 rgba(11,95,86,.7)}70%{box-shadow:0 0 0 10px rgba(11,95,86,0)}100%{box-shadow:0 0 0 0 rgba(11,95,86,0)}}
.btn{
  font:inherit;font-weight:700;border-radius:10px;padding:11px 20px;cursor:pointer;border:1px solid transparent;
}
.btn-primary{background:var(--navy);color:#fff}
.btn-primary:hover{background:var(--navy-700)}
.btn-primary:disabled{background:#9aa1c0;cursor:progress}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--muted)}
.btn-ghost:hover{border-color:var(--navy);color:var(--navy)}
.btn-mini{padding:7px 12px;font-size:12.5px;background:#fff;border-color:var(--line);color:var(--navy);align-self:flex-start}
.btn-mini:hover{border-color:var(--navy)}

/* ===== Thanh toán ===== */
.pay{display:grid;grid-template-columns:260px 1fr;gap:24px;align-items:start}
.qr-frame{
  border:2px dashed var(--navy);border-radius:14px;padding:12px;background:#fff;
  display:grid;place-items:center;min-height:250px;
}
.qr-frame img{width:100%;max-width:230px;display:block}
.qr-fallback{text-align:center;color:var(--muted);font-size:13px}
.qr-cap{margin:10px 0 0;font-size:12.5px;color:var(--muted);text-align:center}
.pay-info{display:grid;gap:10px}
.pay-row{display:flex;justify-content:space-between;gap:16px;border-bottom:1px dashed var(--line);padding-bottom:9px;font-size:14px}
.pay-row span{color:var(--muted)}
.pay-row em{font-style:normal;font-size:12px}
.pay-row.col{flex-direction:column;gap:8px;border-bottom:none}
.pay-row.highlight b{color:var(--accent);font-size:18px}
.pay-row code{
  background:#f3f5fb;border:1px solid var(--line);border-radius:8px;padding:10px 12px;
  font-size:13.5px;word-break:break-word;display:block;
}
.warn{font-size:12.5px;color:var(--warn);margin:4px 0 0}

/* ===== Đồng hồ giữ chỗ trên màn hình QR ===== */
.qr-timer{
  margin-top:10px;text-align:center;font-size:13.5px;
  background:#eef7f5;border:1px solid #bfe0da;color:#0b5f56;
  border-radius:10px;padding:8px 12px;
}
.qr-timer b{font-size:17px;font-variant-numeric:tabular-nums}
.qr-timer.gap{background:var(--accent-soft);border-color:#f3b8c3;color:var(--accent)}
.qr-timer.het{background:#f0f1f5;border-color:var(--line);color:var(--muted)}
.expired{
  background:var(--accent-soft);border:1px solid #f3b8c3;color:#a4001f;
  border-radius:10px;padding:12px 14px;font-size:13.5px;margin-top:4px;
}

.keep-open{
  margin-top:10px;background:var(--warn-soft, #fff6e8);border:1px solid #f1d5a5;
  color:#8a5a06;border-radius:10px;padding:10px 12px;font-size:12.5px;line-height:1.55;text-align:left;
}
.keep-open b{display:block;margin-bottom:2px}

/* ===== Thành công ===== */
.success-panel{text-align:center}
.tick{
  width:64px;height:64px;border-radius:50%;background:var(--ok);color:#fff;
  font-size:34px;display:grid;place-items:center;margin:4px auto 14px;
}
.success-panel h2{margin:0 0 8px;color:var(--ok)}
.success-sub{margin:0 auto 22px;max-width:520px;color:var(--muted);font-size:14px}
.ticket{border:1px solid var(--line);border-radius:12px;text-align:left;overflow:hidden;margin-bottom:16px}
.ticket-row{display:flex;justify-content:space-between;gap:16px;padding:11px 16px;font-size:14px}
.ticket-row:nth-child(odd){background:#f8f9fd}
.ticket-row span{color:var(--muted)}
.ticket-row b{text-align:right}

/* ===== Tóm tắt ===== */
.summary{padding:20px;position:sticky;top:130px}
.summary h3{margin:0 0 14px;font-size:15px;color:var(--navy)}
.summary dl{margin:0}
.summary dl>div{padding:9px 0;border-bottom:1px dashed var(--line)}
.summary dt{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.4px}
.summary dd{margin:3px 0 0;font-size:14px;font-weight:600}
.fee{display:flex;justify-content:space-between;align-items:center;margin-top:14px;font-size:14px}
.fee b{color:var(--accent);font-size:17px}

.site-footer{background:#fff;border-top:1px solid var(--line);padding:18px 0;font-size:12.5px;color:var(--muted)}

/* ===== Responsive ===== */
@media (max-width:900px){
  .layout{grid-template-columns:1fr}
  .summary{position:static;order:-1}
  .topbar{position:static}
  .pay{grid-template-columns:1fr}
  .qr-box{max-width:280px;margin:0 auto}
}
@media (max-width:560px){
  .grid-2{grid-template-columns:1fr}
  .table-tools input[type=search]{width:100%}
  .brand-logo{height:36px}
  .page-title{font-size:19px}
  .page-sub{font-size:14px}
  .header-inner{flex-direction:column;align-items:flex-start}
  .step .label{display:none}
  .step{min-width:0;flex:none}
  .stepper{gap:10px}
  .panel{padding:18px}
}

@media print{
  .site-header,.site-footer,.stepper,.summary,.actions{display:none !important}
  .topbar{position:static;box-shadow:none}
  .page-head{border:none;padding:0 0 12px}
  body{background:#fff}
  .card{box-shadow:none;border:none}
}