/* Vỏ điện thoại — cùng token màu với bản máy tính (style.css). Một codebase, hai vỏ.
   Sáng/tối theo đúng ba trạng thái như bản máy tính. */
*, *::before, *::after { box-sizing: border-box; }

:root {
  --bg: #f4f5f7; --card: #fff; --line: #e3e5ea; --ink: #1c2024; --dim: #6a7079;
  --blue: #3d5afe; --green: #12a594; --red: #d93a3a; --amber: #e08c1a;
  --page: #e9ebf0; --frame: #1c2024;
  --warn-bg: #fff5e8; --warn-line: #f3d9ae; --warn-ink: #8a5a08;
  --r: 12px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #14171b; --card: #1b1f24; --line: #2b3138; --ink: #e7eaee; --dim: #99a1ab;
    --blue: #7f92ff; --green: #35c7b6; --red: #ff6b6b; --amber: #f0ad4e;
    --page: #0e1013; --frame: #05070a;
    --warn-bg: #241f14; --warn-line: #4a3c1d; --warn-ink: #e0b45f;
  }
}
:root[data-theme="dark"] {
  --bg: #14171b; --card: #1b1f24; --line: #2b3138; --ink: #e7eaee; --dim: #99a1ab;
  --blue: #7f92ff; --green: #35c7b6; --red: #ff6b6b; --amber: #f0ad4e;
  --page: #0e1013; --frame: #05070a;
  --warn-bg: #241f14; --warn-line: #4a3c1d; --warn-ink: #e0b45f;
}

html, body { margin: 0; padding: 0; }
body {
  background: var(--page); color: var(--ink);
  font: 15px/1.5 -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  display: flex; flex-direction: column; align-items: center; padding: 20px 12px 60px;
}

.desk-note {
  max-width: 420px; font-size: 12.5px; color: var(--dim); background: var(--card);
  border: 1px solid var(--line); border-radius: var(--r); padding: 10px 13px; margin-bottom: 16px;
}
.desk-note b { color: var(--ink); }
.desk-note a { display: inline-block; margin-top: 6px; color: var(--blue); text-decoration: none; font-weight: 600; }
.desk-row { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; margin-top: 8px; }
.mbo-giaodien { display: inline-flex; gap: 6px; }
select.mini, .desk-note select {
  font: inherit; font-size: 12.5px; padding: 3px 6px; border-radius: 6px;
  border: 1px solid var(--line); background: var(--card); color: var(--ink);
}

/* khung máy — chỉ để xem trên máy tính, trên điện thoại thật thì biến mất */
.phone {
  width: 390px; max-width: 100%; background: var(--frame); border-radius: 38px; padding: 10px;
  box-shadow: 0 18px 50px rgba(0,0,0,.22); position: relative;
}
.notch { position: absolute; top: 16px; left: 50%; transform: translateX(-50%); width: 108px; height: 22px; background: var(--frame); border-radius: 12px; z-index: 3; }
.screen { background: var(--bg); border-radius: 30px; overflow-y: auto; height: 780px; display: flex; flex-direction: column; }
.screen::-webkit-scrollbar { width: 0; }

@media (max-width: 480px) {
  body { padding: 0; background: var(--bg); }
  .desk-note { display: none; }
  .phone { width: 100%; padding: 0; border-radius: 0; box-shadow: none; background: var(--bg); }
  .notch { display: none; }
  .screen { border-radius: 0; height: auto; min-height: 100vh; }
}

.mhead {
  padding: 38px 18px 12px; position: sticky; top: 0; z-index: 2; background: var(--card); border-bottom: 1px solid var(--line);
  display: flex; justify-content: space-between; align-items: baseline; gap: 10px;
}
.mbrand { font-weight: 700; font-size: 17px; letter-spacing: -.3px; }
.mvai { display: block; font-size: 11.5px; font-weight: 400; color: var(--dim); }
.mday { font-size: 12px; color: var(--dim); text-align: right; }

.mbody { padding: 14px 14px 22px; flex: 1; }

/* chuyển pháp nhân */
.mseg { display: flex; gap: 6px; overflow-x: auto; padding-bottom: 10px; scrollbar-width: none; flex-wrap: wrap; }
.mseg::-webkit-scrollbar { height: 0; }
.mseg button {
  flex: 0 0 auto; border: 1px solid var(--line); background: var(--card); color: var(--ink);
  border-radius: 999px; padding: 7px 14px; font-size: 13px; font-family: inherit; cursor: pointer;
}
.mseg button.on { background: var(--ink); color: var(--bg); border-color: var(--ink); }

/* câu trả lời — thứ duy nhất người ta mở điện thoại ra để xem */
.mcard { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 15px; margin-bottom: 12px; }
.mcard h2 { font-size: 13px; margin: 0 0 10px; color: var(--dim); font-weight: 600; text-transform: uppercase; letter-spacing: .4px; }

.answer { border-left: 4px solid var(--red); }
.answer.ok { border-left-color: var(--green); }
.alabel { font-size: 12.5px; color: var(--dim); margin: 0 0 4px; }
.abig { font-size: 30px; font-weight: 700; letter-spacing: -.8px; margin: 0; line-height: 1.15; color: var(--red); }
.answer.ok .abig { color: var(--green); }
.asub { font-size: 13px; color: var(--dim); margin: 6px 0 0; }
.asub b { color: var(--ink); }

.mnum { font-size: 26px; font-weight: 700; letter-spacing: -.6px; margin: 0; }
.mnum small { display: block; font-size: 12px; font-weight: 400; color: var(--dim); letter-spacing: 0; margin-top: 2px; }

.mrow { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; padding: 9px 0; border-top: 1px solid var(--line); font-size: 14px; }
.mrow:first-of-type { border-top: 0; }
.mrow .l { color: var(--dim); font-size: 13px; }
.mrow .v { font-weight: 600; text-align: right; }
.mrow .v small { display: block; font-weight: 400; font-size: 11.5px; color: var(--dim); text-align: right; }
.mink { color: var(--ink); }
.mxs { font-size: 11.5px; }
.neg { color: var(--red); }
.pos { color: var(--green); }

.warn { background: var(--warn-bg); border-color: var(--warn-line); }
.warn h2 { color: var(--warn-ink); }
.warn .wt { font-size: 13.5px; color: var(--warn-ink); margin: 0; }

.mnote { font-size: 12px; color: var(--dim); line-height: 1.55; padding: 2px 4px 0; }
.mnote b { color: var(--ink); }

.mfoot {
  padding: 12px 16px 22px; border-top: 1px solid var(--line); background: var(--card);
  display: flex; justify-content: space-between; gap: 10px; font-size: 11px; color: var(--dim);
}

/* --- vỏ ERP trên điện thoại --- */
.mbrand .dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-right: 7px; vertical-align: -1px; }
.hn-tag { background: #2c313a; color: #fff; border-radius: 999px; padding: 3px 10px; font-size: 12px; }