/* Component dùng chung: card, button, field, error, auth wrapper, logo. */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 16px;
}

.btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 12px;
  border-radius: var(--r-pill);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.btn-primary {
  background: var(--accent);
  color: var(--on-accent);
  border-color: var(--accent);
}

.btn-primary:hover {
  background: var(--accent-press);
}

.field {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 10px 14px;
  margin-bottom: 12px;
}

.field label {
  display: block;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 2px;
}

.field input {
  width: 100%;
  border: 0;
  background: transparent;
  color: var(--text);
  font: inherit;
  outline: none;
}

.error {
  background: rgba(220, 38, 64, .10);
  color: var(--danger);
  border-radius: var(--r-md);
  padding: 10px 14px;
  margin-bottom: 12px;
  font-size: 14px;
}

.auth-wrap {
  max-width: 480px;
  margin: 0 auto;
  padding: 48px 20px;
}

.logo {
  width: 56px;
  height: 56px;
  border-radius: var(--r-md);
  background: var(--accent);
  color: var(--on-accent);
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 28px;
  margin: 0 auto 24px;
}

/* ---- Lịch sử quản trị (đăng nhập / hoạt động) ---- */
.adm-hist { display: flex; flex-direction: column; }
.adm-hist-row { display: flex; gap: 10px; padding: 9px 2px; border-top: 1px solid var(--border); align-items: flex-start; }
.adm-hist-row:first-child { border-top: 0; }
.adm-ic { flex: none; width: 1.05em; margin-top: 2px; color: var(--muted); }
.adm-ic.ok { color: var(--accent); }
.adm-ic.fail { color: var(--danger); }
.adm-hist-main { display: flex; flex-direction: column; gap: 2px; min-width: 0; font-size: 13.5px; }
.adm-hist-time { font-weight: 600; }
.adm-hist-act { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }
.adm-hist-meta { color: var(--muted); display: flex; gap: 5px; flex-wrap: wrap; align-items: center; }
.adm-hist-meta .fa-icon { width: .95em; height: .95em; }
.adm-hist-sub { font-size: 12.5px; }
.adm-more { padding: 12px; text-align: center; font-size: 13px; }

/* ---- Tab CSS-only cho lịch sử quản trị (radio + :checked, không cần JS) ---- */
.adm-tabs { padding: 0; overflow: hidden; }
.adm-tabr { position: absolute; opacity: 0; width: 0; height: 0; }
.adm-tabbar { display: flex; border-bottom: 1px solid var(--border); }
.adm-tab { display: inline-flex; align-items: center; gap: 7px; padding: 13px 18px; cursor: pointer;
  color: var(--muted); border-bottom: 2px solid transparent; margin-bottom: -1px; font-size: 14px; user-select: none; }
.adm-tab:hover { color: var(--text); }
.adm-tab .fa-icon { width: 1em; height: 1em; }
#ht-logins:checked ~ .adm-tabbar label[for="ht-logins"],
#ht-activity:checked ~ .adm-tabbar label[for="ht-activity"] { color: var(--text); font-weight: 600; border-bottom-color: var(--accent); }
.adm-tabr:focus-visible ~ .adm-tabbar label { outline: 2px solid var(--accent); outline-offset: -2px; }
.adm-panels { padding: 14px 16px; }
.adm-panel { display: none; }
#ht-logins:checked ~ .adm-panels #panel-logins,
#ht-activity:checked ~ .adm-panels #panel-activity { display: block; }

/* ---- Trang lỗi 404 (không tìm thấy) ---- */
.errpage { min-height: 72vh; display: flex; align-items: center; justify-content: center; padding: 40px 20px; }
.errpage-card { text-align: center; max-width: 460px; }
.errpage-icon { width: 72px; height: 72px; margin: 0 auto 6px; display: grid; place-items: center; color: var(--accent); }
.errpage-icon .fa-icon { width: 56px; height: 56px; }
.errpage-code { font-size: clamp(56px, 16vw, 88px); font-weight: 800; line-height: 1; letter-spacing: -2px; color: var(--text); }
.errpage-title { margin: 6px 0; font-size: 1.3em; }
.errpage-msg { color: var(--muted); margin: 0 0 24px; line-height: 1.6; }
.errpage-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.errpage-btn { width: auto; display: inline-flex; align-items: center; gap: 8px; padding: 11px 22px; }

/* Form auth (login/register) khi đặt TRONG cột giữa của shell → card gọn, căn giữa */
.auth-in-shell {
  max-width: 460px;
  margin: 28px auto;
  padding: 36px 28px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
}