:root {
  --nen: #0e1117;
  --the: #171c26;
  --the-2: #1f2633;
  --vien: #2a3242;
  --chu: #e6eaf2;
  --chu-mo: #8d97a8;
  --xanh: #3b82f6;
  --xanh-dam: #2563eb;
  --luc: #22c55e;
  --luc-dam: #16a34a;
  --vang: #f59e0b;
  --do: #ef4444;
  --bo: 14px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--nen);
  color: var(--chu);
  font-family: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  -webkit-text-size-adjust: 100%;
}

body { padding: 16px; }

.boc { max-width: 900px; margin: 0 auto; }
.boc-hep { max-width: 560px; margin: 0 auto; }

h1 {
  font-size: 22px;
  margin: 4px 0 2px;
  letter-spacing: .3px;
}

.phu { color: var(--chu-mo); font-size: 13px; margin: 0 0 18px; }

.the {
  background: var(--the);
  border: 1px solid var(--vien);
  border-radius: var(--bo);
  padding: 16px;
  margin-bottom: 14px;
}

.the h2 {
  font-size: 15px;
  margin: 0 0 12px;
  color: var(--chu-mo);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .6px;
}

label { display: block; font-size: 13px; color: var(--chu-mo); margin-bottom: 6px; }

input[type=text], input[type=password], textarea {
  width: 100%;
  background: var(--nen);
  border: 1px solid var(--vien);
  border-radius: 10px;
  color: var(--chu);
  padding: 12px 14px;
  font-size: 16px;
  font-family: inherit;
  outline: none;
}

input:focus, textarea:focus { border-color: var(--xanh); }

textarea {
  min-height: 160px;
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
  font-size: 13px;
  line-height: 1.5;
  resize: vertical;
}

button {
  border: 0;
  border-radius: 10px;
  padding: 12px 18px;
  font-size: 15px;
  font-weight: 600;
  font-family: inherit;
  color: #fff;
  background: var(--xanh);
  cursor: pointer;
}

button:hover { background: var(--xanh-dam); }
button:active { transform: translateY(1px); }
button[disabled] { opacity: .5; cursor: not-allowed; }

button.luc { background: var(--luc); }
button.luc:hover { background: var(--luc-dam); }
button.mo { background: var(--the-2); color: var(--chu); border: 1px solid var(--vien); }
button.mo:hover { background: #28313f; }
button.do { background: var(--do); }

.hang { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.hang > .gian { flex: 1 1 auto; }

.nhan {
  display: inline-block;
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}
.nhan.free { background: #1e3a5f; color: #7dd3fc; }
.nhan.taken { background: #45340d; color: #fbbf24; }
.nhan.done { background: #14361f; color: #4ade80; }

.bao {
  margin-top: 12px;
  padding: 11px 14px;
  border-radius: 10px;
  font-size: 14px;
  line-height: 1.5;
  display: none;
  white-space: pre-wrap;
}
.bao.hien { display: block; }
.bao.ok { background: #13301f; color: #86efac; border: 1px solid #1d5236; }
.bao.xau { background: #331717; color: #fca5a5; border: 1px solid #5b2020; }

/* ---- ô số liệu ---- */
.so-lieu { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.o-so {
  background: var(--the-2);
  border-radius: 10px;
  padding: 12px 10px;
  text-align: center;
}
.o-so b { display: block; font-size: 22px; line-height: 1.2; }
.o-so span { font-size: 11px; color: var(--chu-mo); text-transform: uppercase; letter-spacing: .5px; }

/* ---- bảng ---- */
.cuon { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { padding: 9px 10px; text-align: left; border-bottom: 1px solid var(--vien); white-space: nowrap; }
th { color: var(--chu-mo); font-weight: 600; font-size: 12px; text-transform: uppercase; }
tr:last-child td { border-bottom: 0; }
td.mono { font-family: ui-monospace, Consolas, monospace; }

/* ---- dòng dữ liệu kèm nút copy (trang /get) ---- */
.dong-du-lieu {
  display: flex;
  align-items: stretch;
  gap: 10px;
  background: var(--the-2);
  border: 1px solid var(--vien);
  border-radius: 12px;
  padding: 12px 12px 12px 14px;
  margin-bottom: 10px;
}

.dong-du-lieu .noi-dung { flex: 1 1 auto; min-width: 0; }
.dong-du-lieu .ten-o {
  font-size: 11px;
  color: var(--chu-mo);
  text-transform: uppercase;
  letter-spacing: .7px;
  margin-bottom: 3px;
}
.dong-du-lieu .gia-tri {
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
  font-size: 16px;
  line-height: 1.35;
  word-break: break-all;
  user-select: all;
}

.nut-copy {
  flex: 0 0 auto;
  width: 48px;
  background: var(--the);
  border: 1px solid var(--vien);
  border-radius: 10px;
  color: var(--chu-mo);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}
.nut-copy:hover { background: #28313f; color: var(--chu); }
.nut-copy svg { width: 20px; height: 20px; display: block; }
.nut-copy.xong { background: var(--luc); border-color: var(--luc); color: #fff; }

.stt-to {
  font-size: 13px;
  color: var(--chu-mo);
  margin-bottom: 10px;
}
.stt-to b { color: var(--chu); font-size: 20px; }

.tien-do {
  height: 6px;
  background: var(--the-2);
  border-radius: 999px;
  overflow: hidden;
  margin: 10px 0 6px;
}
.tien-do i { display: block; height: 100%; background: var(--luc); width: 0; transition: width .3s; }

.qr-o {
  background: #fff;
  padding: 14px;
  border-radius: 12px;
  display: inline-block;
  line-height: 0;
}

.link-nho {
  font-size: 13px;
  color: var(--chu-mo);
  word-break: break-all;
  font-family: ui-monospace, Consolas, monospace;
}

.an { display: none !important; }

/* ô chọn file thật: giấu đi nhưng vẫn bấm được qua nút của mình */
.file-an {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

@media (max-width: 520px) {
  .so-lieu { grid-template-columns: repeat(2, 1fr); }
  body { padding: 12px; }
}