/* ══════════════════════════════════════════════════════════════════════════════════════════════
 * TRANG ĐĂNG NHẬP (làm lại 14/10/2026) — prefix lg2-. Markup: #loginPage trong admin/index.html.
 * Máy tính: chia đôi (bảng thương hiệu · form) · ≤ 1023px: một cột, bảng thương hiệu ẩn, logo + tên lên đầu thẻ.
 * Ghi đè .login-* cũ của admin.css bằng độ cụ thể `.login-page.lg2`.
 * ════════════════════════════════════════════════════════════════════════════════════════════ */
.login-page.lg2{
  --lg-t1:#6366f1; --lg-t2:#8b5cf6; --lg-t3:#4f46e5;
  --lg-nen:#f6f7fb; --lg-the:#ffffff; --lg-chu:#0f172a; --lg-chu2:#475569; --lg-chu3:#94a3b8; --lg-vien:#e2e8f0; --lg-o:#f8fafc;
  position:relative; min-height:100vh; min-height:100dvh; display:block; padding:0; overflow:hidden;
  background:var(--lg-nen); color:var(--lg-chu);
  font-family:Inter,-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;
}
[data-theme="dark"] .login-page.lg2{ --lg-nen:#0b1020; --lg-the:#111827; --lg-chu:#f1f5f9; --lg-chu2:#cbd5e1; --lg-chu3:#64748b; --lg-vien:#1f2a44; --lg-o:#0f172a; }
.login-page.lg2.hidden{display:none!important}
.lg2 *{box-sizing:border-box}

/* nền: ba quầng màu mờ chuyển động rất chậm */
.lg2-nen{position:absolute;inset:0;overflow:hidden;pointer-events:none}
.lg2-nen i{position:absolute;border-radius:50%;filter:blur(80px);opacity:.35;animation:lg2Troi 22s ease-in-out infinite alternate}
.lg2-nen i:nth-child(1){width:520px;height:520px;left:-120px;top:-160px;background:#818cf8}
.lg2-nen i:nth-child(2){width:420px;height:420px;right:-120px;bottom:-140px;background:#c4b5fd;animation-delay:-8s}
.lg2-nen i:nth-child(3){width:300px;height:300px;right:28%;top:12%;background:#a5f3fc;opacity:.22;animation-delay:-14s}
[data-theme="dark"] .lg2-nen i{opacity:.18}
@keyframes lg2Troi{to{transform:translate(40px,30px) scale(1.08)}}

.lg2-khung{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);min-height:100vh;min-height:100dvh}

/* ── TRÁI: bảng thương hiệu ── */
.lg2-trai{position:relative;display:flex;flex-direction:column;justify-content:space-between;gap:28px;padding:44px 52px;margin:16px 0 16px 16px;border-radius:28px;color:#fff;overflow:hidden;
  background:radial-gradient(120% 90% at 0% 0%,#818cf8 0%,transparent 55%),radial-gradient(90% 80% at 100% 100%,#a78bfa 0%,transparent 60%),linear-gradient(135deg,#4f46e5 0%,#6d28d9 100%);
  box-shadow:0 30px 60px -30px rgba(79,70,229,.55)}
.lg2-trai::before{content:"";position:absolute;inset:0;opacity:.14;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.6) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.6) 1px,transparent 1px);background-size:44px 44px;
  -webkit-mask-image:radial-gradient(circle at 30% 20%,#000 0%,transparent 70%);mask-image:radial-gradient(circle at 30% 20%,#000 0%,transparent 70%)}
.lg2-trai>*{position:relative}
.lg2-trai-dau{display:flex;align-items:center;gap:12px}
.lg2-logo{width:44px;height:44px;flex:none;border-radius:14px;display:grid;place-items:center;font-size:1.15rem;background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.28);box-shadow:inset 0 1px 0 rgba(255,255,255,.25)}
.lg2-ten{font-size:1.05rem;font-weight:800;letter-spacing:-.01em}
.lg2-chao{margin:0 0 14px;font-size:clamp(1.9rem,2.6vw,2.6rem);line-height:1.15;font-weight:800;letter-spacing:-.025em}
.lg2-chao span{background:linear-gradient(90deg,#e0e7ff,#c7d2fe 40%,#a5f3fc);-webkit-background-clip:text;background-clip:text;color:transparent}
.lg2-khau{margin:0 0 28px;max-width:440px;font-size:.98rem;line-height:1.6;color:rgba(255,255,255,.82)}
.lg2-diem{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px;max-width:440px}
.lg2-diem li{display:flex;align-items:center;gap:14px;padding:12px 14px;border-radius:16px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.16)}
.lg2-diem-ic{width:38px;height:38px;flex:none;border-radius:11px;display:grid;place-items:center;background:rgba(255,255,255,.18)}
.lg2-diem b{display:block;font-size:.88rem;font-weight:700}.lg2-diem small{display:block;font-size:.74rem;color:rgba(255,255,255,.72);margin-top:1px}
.lg2-trai-chan{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;flex-wrap:wrap}
.lg2-gio b{display:block;font-size:2rem;font-weight:800;letter-spacing:-.02em;font-variant-numeric:tabular-nums;line-height:1}
.lg2-gio span{display:block;margin-top:4px;font-size:.78rem;color:rgba(255,255,255,.75);text-transform:capitalize}
.lg2-baove{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);font-size:.74rem;font-weight:600}

/* ── PHẢI: thẻ form ── */
.lg2-phai{display:flex;align-items:center;justify-content:center;padding:32px 24px}
.login-page.lg2 .lg2-the{width:100%;max-width:420px;padding:36px 34px 26px;border-radius:24px;background:var(--lg-the);border:1px solid var(--lg-vien);
  box-shadow:0 1px 2px rgba(15,23,42,.04),0 24px 60px -24px rgba(15,23,42,.18);animation:lg2Vao .45s cubic-bezier(.2,.8,.2,1) both}
@keyframes lg2Vao{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.login-page.lg2 .lg2-dau{text-align:left;margin:0 0 22px}
.lg2-logo.nho{display:none;margin-bottom:14px;width:46px;height:46px;color:#fff;background:linear-gradient(135deg,var(--lg-t1),var(--lg-t2));border:0;box-shadow:0 10px 24px -10px rgba(99,102,241,.6)}
.login-page.lg2 .login-title{margin:0;font-size:1.55rem;font-weight:800;letter-spacing:-.02em;color:var(--lg-chu)}
.login-page.lg2 .lg2-phu{margin:6px 0 0;font-size:.86rem;color:var(--lg-chu2)}
.lg2-loi-chao{font-weight:600;color:var(--lg-chu)}

.login-page.lg2 .lg2-google{display:flex;align-items:center;justify-content:center;gap:10px;width:100%;min-height:48px;padding:0 16px;border-radius:12px;
  border:1.5px solid var(--lg-vien);background:var(--lg-the);color:var(--lg-chu);font:inherit;font-size:.92rem;font-weight:600;cursor:pointer;
  transition:background .15s ease,border-color .15s ease,transform .15s ease,box-shadow .15s ease}
.login-page.lg2 .lg2-google:hover{background:var(--lg-o);border-color:#c7d2fe;transform:translateY(-1px);box-shadow:0 6px 16px -10px rgba(15,23,42,.25)}
.login-page.lg2 .lg2-google:focus-visible{outline:0;box-shadow:0 0 0 3px rgba(99,102,241,.25)}
.login-page.lg2 .lg2-google:disabled{opacity:.6;cursor:not-allowed;transform:none}
.login-page.lg2 .lg2-chia{display:flex;align-items:center;gap:12px;margin:20px 0;color:var(--lg-chu3);font-size:.76rem;font-weight:600}
.login-page.lg2 .lg2-chia::before,.login-page.lg2 .lg2-chia::after{content:"";flex:1;height:1px;background:var(--lg-vien)}
.login-page.lg2 .lg2-chia span{padding:0;background:none}

.lg2-form{display:flex;flex-direction:column;gap:16px;margin:0}
.lg2-o{display:flex;flex-direction:column;gap:7px}
.lg2-o label,.lg2-nhan-hang label{font-size:.82rem;font-weight:700;color:var(--lg-chu)}
.lg2-nhan-hang{display:flex;align-items:center;justify-content:space-between;gap:10px}
.lg2-quen{font-size:.8rem;font-weight:600;color:var(--lg-t3);text-decoration:none;border-radius:6px}
.lg2-quen:hover{text-decoration:underline}.lg2-quen:focus-visible{outline:0;box-shadow:0 0 0 3px rgba(99,102,241,.25)}
.lg2-nhap{position:relative;display:flex;align-items:center}
.lg2-nhap>i{position:absolute;left:15px;color:var(--lg-chu3);font-size:.9rem;pointer-events:none;transition:color .15s ease}
.login-page.lg2 .lg2-nhap input{width:100%;min-height:48px;padding:0 46px 0 42px;border-radius:12px;border:1.5px solid var(--lg-vien);background:var(--lg-o);
  color:var(--lg-chu);font:inherit;font-size:.95rem;transition:border-color .15s ease,box-shadow .15s ease,background .15s ease}
.login-page.lg2 .lg2-nhap input::placeholder{color:var(--lg-chu3)}
.login-page.lg2 .lg2-nhap input:hover{border-color:#cbd5e1}
.login-page.lg2 .lg2-nhap input:focus{outline:0;border-color:#818cf8;background:var(--lg-the);box-shadow:0 0 0 4px rgba(99,102,241,.14)}
.lg2-nhap:focus-within>i{color:var(--lg-t1)}
.login-page.lg2 .lg2-nhap input[aria-invalid="true"]{border-color:#ef4444;box-shadow:0 0 0 4px rgba(239,68,68,.12)}
.login-page.lg2 .lg2-mat{position:absolute;right:6px;width:36px;height:36px;display:grid;place-items:center;border:0;border-radius:9px;background:transparent;color:var(--lg-chu3);cursor:pointer;transition:background .15s ease,color .15s ease}
.login-page.lg2 .lg2-mat:hover{background:rgba(99,102,241,.08);color:var(--lg-t1)}
.login-page.lg2 .lg2-mat:focus-visible{outline:0;box-shadow:0 0 0 3px rgba(99,102,241,.25)}
.lg2-goi-y{display:flex;align-items:center;gap:6px;font-size:.76rem;font-weight:600}
.lg2-goi-y[hidden]{display:none}
.lg2-goi-y.loi{color:#dc2626}.lg2-goi-y.canh{color:#b45309}

.lg2-nho{display:flex;align-items:center;gap:10px;cursor:pointer;font-size:.84rem;color:var(--lg-chu2);user-select:none;width:max-content;max-width:100%}
.lg2-nho small{color:var(--lg-chu3)}
.lg2-nho input{position:absolute;opacity:0;width:1px;height:1px}
.lg2-nho-sw{position:relative;width:38px;height:22px;flex:none;border-radius:999px;background:#cbd5e1;transition:background .18s ease}
.lg2-nho-sw::after{content:"";position:absolute;top:3px;left:3px;width:16px;height:16px;border-radius:50%;background:#fff;box-shadow:0 1px 3px rgba(15,23,42,.3);transition:transform .2s cubic-bezier(.34,1.56,.64,1)}
.lg2-nho input:checked+.lg2-nho-sw{background:linear-gradient(135deg,var(--lg-t1),var(--lg-t2))}
.lg2-nho input:checked+.lg2-nho-sw::after{transform:translateX(16px)}
.lg2-nho input:focus-visible+.lg2-nho-sw{box-shadow:0 0 0 3px rgba(99,102,241,.25)}

.login-page.lg2 .lg2-loi{display:flex;align-items:flex-start;gap:10px;margin:0;padding:12px 14px;border-radius:12px;background:#fef2f2;border:1px solid #fecaca;color:#b91c1c;font-size:.84rem;font-weight:600;line-height:1.45;animation:lg2Rung .35s ease}
.login-page.lg2 .lg2-loi.hidden{display:none}
.login-page.lg2 .lg2-loi i{margin-top:2px}
@keyframes lg2Rung{20%,60%{transform:translateX(-4px)}40%,80%{transform:translateX(4px)}}

.login-page.lg2 .lg2-nut{display:flex;align-items:center;justify-content:center;gap:10px;width:100%;min-height:50px;margin-top:2px;border:0;border-radius:12px;
  background:linear-gradient(135deg,var(--lg-t1) 0%,var(--lg-t2) 100%);color:#fff;font:inherit;font-size:.96rem;font-weight:700;cursor:pointer;
  box-shadow:0 12px 24px -12px rgba(99,102,241,.75);transition:transform .15s ease,box-shadow .15s ease,filter .15s ease}
.login-page.lg2 .lg2-nut:hover{transform:translateY(-1px);box-shadow:0 16px 28px -12px rgba(99,102,241,.85);filter:brightness(1.05)}
.login-page.lg2 .lg2-nut:active{transform:translateY(0)}
.login-page.lg2 .lg2-nut:focus-visible{outline:0;box-shadow:0 0 0 4px rgba(99,102,241,.3),0 12px 24px -12px rgba(99,102,241,.75)}
.login-page.lg2 .lg2-nut:disabled{opacity:.7;cursor:not-allowed;transform:none;filter:none}

.lg2-an-toan{display:flex;align-items:center;justify-content:center;gap:7px;margin:16px 0 0;font-size:.72rem;color:var(--lg-chu3);text-align:center}
.lg2-an-toan i{color:#10b981}
.login-page.lg2 .lg2-chan{margin:18px 0 0;padding-top:16px;border-top:1px solid var(--lg-vien);text-align:center}
.login-page.lg2 .lg2-chan .back-link{display:inline-flex;align-items:center;gap:7px;font-size:.82rem;font-weight:600;color:var(--lg-chu2);text-decoration:none;border-radius:6px}
.login-page.lg2 .lg2-chan .back-link:hover{color:var(--lg-t3)}
.login-page.lg2 .lg2-chan .back-link:focus-visible{outline:0;box-shadow:0 0 0 3px rgba(99,102,241,.25)}

[data-theme="dark"] .login-page.lg2 .lg2-loi{background:#2a0f14;border-color:#7f1d1d;color:#fca5a5}
[data-theme="dark"] .lg2-nho-sw{background:#334155}

/* ── Tablet & điện thoại: một cột ── */
@media (max-width:1023px){
  .lg2-khung{grid-template-columns:1fr}
  .lg2-trai{display:none}
  .lg2-logo.nho{display:grid}
  .lg2-phai{padding:28px 20px}
  .login-page.lg2 .lg2-dau{text-align:center}
  .login-page.lg2 .lg2-dau .lg2-logo{margin-left:auto;margin-right:auto}
}
@media (max-width:480px){
  .lg2-phai{align-items:flex-start;padding:max(20px,env(safe-area-inset-top)) 16px 24px}
  .login-page.lg2 .lg2-the{padding:26px 20px 20px;border-radius:20px}
  .login-page.lg2 .login-title{font-size:1.35rem}
  .login-page.lg2 .lg2-nhap input{font-size:16px}   /* iOS tự phóng to khi < 16px */
}
@media (min-width:1024px) and (max-height:760px){ .lg2-diem li:nth-child(3){display:none} .lg2-trai{padding:32px 40px} }
@media (prefers-reduced-motion:reduce){ .lg2-nen i,.login-page.lg2 .lg2-the,.login-page.lg2 .lg2-loi{animation:none!important} .lg2 *{transition:none!important} }

/* chatbot Gemini đời cũ (#chatbotFab) đã tắt — ẩn ngay từ CSS đầu trang để không chớp ở trang đăng nhập */
#chatbotFab{display:none!important}

/* admin.css (≤ 480px) ẩn chữ trong MỌI .btn để còn biểu tượng — trang đăng nhập cần chữ trên 2 nút chính */
.login-page.lg2 .lg2-google span,.login-page.lg2 .lg2-nut span{display:inline!important}