/* Trang nhập mật khẩu XEM (docbienso/cong_xem.py) — cùng bảng màu với dashboard (trinh-dien.css). */
:root {
  color-scheme: dark;
  --nen: #03060c; --nen-2: #0a1424; --kinh: rgba(12, 22, 38, .72);
  --vien: rgba(96, 165, 250, .28); --chu: #e8eef8; --chu-phu: #9db0cc; --nhan: #4da3ff; --xau: #f87171;
}
@media (prefers-color-scheme: light) {
  :root {
    color-scheme: light;
    --nen: #e9eff8; --nen-2: #f6f9fd; --kinh: rgba(255, 255, 255, .86);
    --vien: rgba(29, 78, 160, .22); --chu: #0b1424; --chu-phu: #44556e; --nhan: #1d6fe0; --xau: #b91c1c;
  }
}
* { box-sizing: border-box; }
html { background: var(--nen); }
body {
  margin: 0; min-height: 100vh; display: grid; place-items: center; padding: 16px;
  color: var(--chu); font: 16px/1.45 system-ui, "Segoe UI", Roboto, sans-serif;
  background: radial-gradient(1200px 600px at 70% -10%, var(--nen-2) 0%, var(--nen) 62%) fixed;
}
.hop {
  width: min(100%, 380px); padding: 32px 28px; border-radius: 16px; border: 1px solid var(--vien);
  background: var(--kinh); box-shadow: 0 0 40px -18px var(--nhan); text-align: center;
}
.logo {
  display: inline-block; width: 44px; height: 44px; border-radius: 10px; border: 2px solid var(--nhan);
  position: relative; box-shadow: 0 0 16px -2px var(--nhan);
}
.logo::after { content: ""; position: absolute; inset: 28% 14%; border: 2px solid var(--nhan); border-radius: 3px; }
h1 { margin: 16px 0 4px; font-size: 1.2rem; }
.phu { margin: 0 0 20px; color: var(--chu-phu); font-size: .92rem; }
form { display: grid; gap: 10px; text-align: left; }
label { font-weight: 600; font-size: .9rem; }
input[type="password"] {
  width: 100%; min-height: 44px; padding: 8px 12px; border-radius: 10px; border: 1px solid var(--vien);
  background: transparent; color: var(--chu); font-size: 1.1rem; letter-spacing: .12em;
}
input[type="password"]:focus-visible { outline: 2px solid var(--nhan); outline-offset: 2px; }
button {
  min-height: 44px; margin-top: 6px; border: 0; border-radius: 10px; background: var(--nhan); color: #fff;
  font-weight: 700; font-size: 1rem; cursor: pointer;
}
button:focus-visible { outline: 2px solid var(--chu); outline-offset: 2px; }
.loi { margin: 0; color: var(--xau); font-weight: 600; font-size: .92rem; }