/* ===== Trang đăng nhập / đăng ký / cài đặt =====
   Ý tưởng: màu xanh chai bia + giấy in hóa đơn nhiệt + vàng đèn lồng.
   Điểm nhấn duy nhất: tờ hóa đơn có mã QR "in ra" từ khe máy in. */
:root{
  --green:#0f3d2e; --green-2:#14523d; --green-ink:#cfe3d8;
  --paper:#fbfaf6; --ink:#1c1c1a; --muted:#6a6f68; --line:#e2e0d8;
  --amber:#f2a541; --amber-2:#d98b22; --stamp:#c8372d; --err:#b3261e; --ok:#1f7a4d;
}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%}
body.auth{font-family:"Be Vietnam Pro",-apple-system,"Segoe UI",Roboto,Arial,sans-serif;color:var(--ink);background:var(--paper);font-size:15px;line-height:1.55;-webkit-font-smoothing:antialiased}
.auth-wrap{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);min-height:100vh}

/* --- Bên trái: thương hiệu --- */
.auth-side{position:relative;overflow:hidden;background:var(--green);color:#fff;padding:44px 56px;display:flex;flex-direction:column}
.auth-side::before{content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(circle at 1px 1px,rgba(255,255,255,.07) 1px,transparent 1.5px) 0 0/22px 22px}
.auth-side>*{position:relative}
.brand{display:flex;align-items:center;gap:12px;font-weight:700;font-size:18px;letter-spacing:-.01em}
.brand svg{width:40px;height:40px;flex:none}
.auth-side h1{font-size:clamp(28px,3.1vw,44px);line-height:1.12;letter-spacing:-.025em;font-weight:800;margin:56px 0 16px;max-width:15em}
.auth-side .lead{color:var(--green-ink);max-width:34em;margin:0 0 22px;font-size:16px}
.kinds{display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0;list-style:none}
.kinds li{border:1px solid rgba(255,255,255,.22);border-radius:999px;padding:6px 14px;font-size:14px;color:#fff;display:flex;gap:8px;align-items:center}
.kinds li svg{width:16px;height:16px;color:var(--amber)}
.side-foot{margin-top:auto;padding-top:28px;color:rgba(255,255,255,.55);font-size:13px}

/* tờ hóa đơn */
.printer{margin:40px 0 0 6px;width:300px;position:relative}
.printer .slot{height:14px;border-radius:8px;background:#0a2b20;box-shadow:inset 0 3px 6px rgba(0,0,0,.45);width:316px;margin-left:-8px}
.receipt{width:300px;margin-top:-6px;background:#fffef9;color:#222;padding:18px 18px 26px;font-family:"Courier New",Courier,monospace;font-size:12.5px;line-height:1.5;
  box-shadow:0 18px 40px rgba(0,0,0,.35);transform-origin:top center;position:relative;
  -webkit-mask:linear-gradient(#000 0 0) top/100% calc(100% - 8px) no-repeat,radial-gradient(circle 5px at 7px 100%,transparent 4.5px,#000 5px) bottom/14px 8px repeat-x;
          mask:linear-gradient(#000 0 0) top/100% calc(100% - 8px) no-repeat,radial-gradient(circle 5px at 7px 100%,transparent 4.5px,#000 5px) bottom/14px 8px repeat-x;
  animation:print 1.6s cubic-bezier(.2,.7,.2,1) .25s both}
@keyframes print{from{clip-path:inset(0 0 100% 0);transform:translateY(-30px)}to{clip-path:inset(0 0 0 0);transform:translateY(0)}}
.receipt .c{text-align:center}.receipt b{font-weight:700}
.receipt .r{display:flex;justify-content:space-between;gap:10px}
.receipt hr{border:0;border-top:1px dashed #999;margin:8px 0}
.receipt .tot{font-size:15px;font-weight:700}
.receipt .qr{width:112px;height:112px;margin:8px auto 4px}
.stamp{position:absolute;right:2px;bottom:92px;border:3px solid var(--stamp);color:var(--stamp);font-family:"Be Vietnam Pro",Arial,sans-serif;font-weight:800;
  padding:4px 10px;border-radius:6px;transform:rotate(-13deg);font-size:15px;opacity:.85;animation:stamp .35s ease-out 1.9s both}
@keyframes stamp{from{transform:rotate(-13deg) scale(1.8);opacity:0}to{transform:rotate(-13deg) scale(1);opacity:.85}}

/* các bước (trang đăng ký) */
.steps{list-style:none;margin:8px 0 0;padding:0;counter-reset:s;max-width:30em}
.steps li{counter-increment:s;display:grid;grid-template-columns:36px 1fr;gap:14px;padding:14px 0;border-top:1px solid rgba(255,255,255,.14)}
.steps li::before{content:counter(s);width:32px;height:32px;border-radius:50%;background:var(--amber);color:var(--green);font-weight:800;display:flex;align-items:center;justify-content:center}
.steps b{display:block;font-size:16px}
.steps span{color:var(--green-ink);font-size:14px}

/* --- Bên phải: biểu mẫu --- */
.auth-main{display:flex;align-items:center;justify-content:center;padding:44px 28px}
.auth-card{width:100%;max-width:420px}
.auth-card.wide{max-width:560px}
.auth-card h2{font-size:28px;letter-spacing:-.02em;margin:0 0 6px;font-weight:800}
.auth-card .sub{color:var(--muted);margin:0 0 26px}
.f{margin-bottom:16px}
.f label{display:block;font-size:14px;font-weight:600;margin-bottom:6px}
.f .hint{font-size:13px;color:var(--muted);margin-top:5px}
.inp{position:relative}
.inp svg{position:absolute;left:13px;top:50%;transform:translateY(-50%);width:18px;height:18px;color:#8b8f86;pointer-events:none}
.auth input,.auth select{width:100%;height:48px;border:1.5px solid var(--line);border-radius:10px;background:#fff;padding:0 14px;font:inherit;color:var(--ink);transition:border-color .15s,box-shadow .15s}
.inp input{padding-left:42px}
.auth input:focus,.auth select:focus{outline:none;border-color:var(--green-2);box-shadow:0 0 0 4px rgba(20,82,61,.14)}
.auth input[aria-invalid=true]{border-color:var(--err)}
.pw-toggle{position:absolute;right:6px;top:50%;transform:translateY(-50%);border:0;background:none;color:var(--muted);font:inherit;font-size:13px;font-weight:600;padding:8px 10px;cursor:pointer;border-radius:8px}
.pw-toggle:hover{color:var(--ink);background:#f0eee7}
.btn-main{width:100%;height:52px;border:0;border-radius:10px;background:var(--green);color:#fff;font:inherit;font-weight:700;font-size:16px;cursor:pointer;transition:background .15s,transform .05s}
.btn-main:hover{background:var(--green-2)}
.btn-main:active{transform:translateY(1px)}
.btn-main:focus-visible,.pw-toggle:focus-visible,.kind-opt input:focus-visible+span,.auth a:focus-visible{outline:3px solid var(--amber);outline-offset:2px}
.btn-main[disabled]{opacity:.6;cursor:wait}
.alt{margin-top:22px;padding-top:20px;border-top:1px solid var(--line);color:var(--muted);font-size:14px}
.auth a{color:var(--green-2);font-weight:600}
.msg{border-radius:10px;padding:12px 14px;margin-bottom:18px;font-size:14px;border:1px solid}
.msg.err{background:#fdf0ef;border-color:#f1c8c4;color:var(--err)}
.msg.ok{background:#ecf6f0;border-color:#bfe0cd;color:var(--ok)}
.msg.warn{background:#fdf6e7;border-color:#efd9a6;color:#7a5600}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.check{display:flex;gap:10px;align-items:flex-start;font-size:14px;margin:6px 0 14px;cursor:pointer}
.check input{width:18px;height:18px;margin:2px 0 0;accent-color:var(--green);flex:none}
fieldset{border:0;padding:0;margin:0 0 22px}
legend{font-weight:800;font-size:16px;margin-bottom:12px;padding:0}

/* chọn loại hình */
.kind-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.kind-opt{position:relative;cursor:pointer}
.kind-opt input{position:absolute;opacity:0;pointer-events:none}
.kind-opt span{display:flex;flex-direction:column;align-items:flex-start;gap:8px;border:1.5px solid var(--line);border-radius:12px;padding:14px;background:#fff;height:100%;transition:border-color .15s,background .15s}
.kind-opt span svg{width:28px;height:28px;color:var(--green-2)}
.kind-opt span b{font-size:15px}
.kind-opt span small{color:var(--muted);font-size:12.5px;line-height:1.4}
.kind-opt input:checked+span{border-color:var(--green);background:#eef5f1;box-shadow:inset 0 0 0 1px var(--green)}
.code-preview{display:flex;align-items:center;border:1.5px solid var(--line);border-radius:10px;background:#fff;height:48px;overflow:hidden}
.code-preview:focus-within{border-color:var(--green-2);box-shadow:0 0 0 4px rgba(20,82,61,.14)}
.code-preview em{font-style:normal;color:var(--muted);padding:0 0 0 14px;white-space:nowrap;font-size:14px}
.code-preview input{border:0!important;box-shadow:none!important;height:46px;padding-left:4px;font-weight:700}

/* trang thành công */
.done-mark{width:64px;height:64px;border-radius:50%;background:#e3f1e9;color:var(--ok);display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.done-mark svg{width:34px;height:34px}
.ticket{border:1.5px dashed #b9b6aa;border-radius:12px;padding:16px 18px;margin:18px 0 22px;background:#fff}
.ticket .r{display:flex;justify-content:space-between;gap:12px;padding:6px 0}
.ticket .r+.r{border-top:1px solid #f0eee7}
.ticket .r span{color:var(--muted)}
.ticket .r b{font-size:17px}

@media (max-width:980px){
  .auth-wrap{grid-template-columns:1fr}
  .auth-side{padding:22px 22px 26px}
  .auth-side h1{margin:22px 0 10px;font-size:26px}
  .auth-side .lead{font-size:15px;margin-bottom:14px}
  .printer,.steps,.side-foot{display:none}
  .auth-main{padding:28px 20px 40px;align-items:flex-start}
}
@media (max-width:520px){.kind-grid{grid-template-columns:1fr}.row2{grid-template-columns:1fr}}
@media (prefers-reduced-motion:reduce){.receipt,.stamp{animation:none}}