:root{
  --red:#8a0e20; --red-2:#a3122b; --red-3:#c62a45;
  --ink:#1c1c1e; --muted:#6b6b70; --line:#e6e6ea;
  --bg:#f4f5f7; --card:#ffffff; --ok:#128a4a; --warn:#b9770e;
  --radius:16px; --shadow:0 10px 30px rgba(20,20,30,.08);
  font-synthesis:none;
}
*{box-sizing:border-box}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:'Segoe UI',system-ui,-apple-system,'Roboto',Arial,sans-serif;
  line-height:1.55;-webkit-font-smoothing:antialiased;
}
.wrap{max-width:720px;margin:0 auto;padding:22px 16px 60px}
.header{
  background:linear-gradient(135deg,var(--red),var(--red-3));
  color:#fff;border-radius:var(--radius);padding:26px 24px;box-shadow:var(--shadow);
  position:relative;overflow:hidden;
}
.header::after{content:"";position:absolute;right:-40px;top:-40px;width:180px;height:180px;
  background:radial-gradient(circle,rgba(255,255,255,.14),transparent 70%);}
.header .emblem{width:44px;height:44px;border-radius:50%;background:rgba(255,255,255,.16);
  display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:12px;
  color:#ffcd00}
.header h1{margin:0;font-size:22px;font-weight:700;letter-spacing:.2px}
.header .sub{margin:8px 0 0;font-size:15px;opacity:.95}
.header .intro{margin:14px 0 0;font-size:14px;opacity:.9;
  background:rgba(255,255,255,.12);padding:10px 14px;border-radius:10px;display:inline-block}

.card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);
  padding:22px;margin-top:18px}
.section-title{font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:.6px;
  color:var(--red);margin:0 0 14px;display:flex;align-items:center;gap:8px}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:6px;color:#333}
.field .req{color:var(--red-3)}
.field input,.field textarea,.field select{
  width:100%;padding:12px 14px;border:1.5px solid var(--line);border-radius:12px;
  font-size:15px;font-family:inherit;background:#fbfbfc;transition:border .15s,box-shadow .15s;color:var(--ink)}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--red-2);
  box-shadow:0 0 0 4px rgba(163,18,43,.10);background:#fff}
.hint{font-size:12.5px;color:var(--muted);margin-top:6px}

.social{display:flex;flex-wrap:wrap;gap:10px;margin-top:4px}
.social a{flex:1 1 30%;min-width:120px;text-decoration:none;text-align:center;
  padding:11px 10px;border-radius:12px;font-weight:600;font-size:14px;border:1.5px solid var(--line);
  color:#333;background:#fff;display:flex;align-items:center;justify-content:center;gap:8px}
.social a.g{border-color:#dadce0}
.social a.f{border-color:#dbe4ff;color:#1877f2}
.social a.z{border-color:#cfe6ff;color:#0068ff}
.social a:hover{transform:translateY(-1px);box-shadow:var(--shadow)}
.logged{background:#eefaf1;border:1.5px solid #bfe8cc;border-radius:12px;padding:12px 14px;
  font-size:14px;display:flex;justify-content:space-between;align-items:center;gap:10px}
.logged b{color:var(--ok)}

/* ---- Chụp khuôn mặt ---- */
.face-guide{background:#fff8f9;border:1.5px dashed #e7b9c2;border-radius:14px;padding:14px 16px;margin-bottom:14px;font-size:13.5px;color:#7a2130}
.face-guide ul{margin:8px 0 0;padding-left:20px}
.cam-stage{position:relative;width:100%;max-width:360px;margin:0 auto;aspect-ratio:3/4;
  background:#111;border-radius:16px;overflow:hidden;display:flex;align-items:center;justify-content:center}
.cam-stage video,.cam-stage canvas{width:100%;height:100%;object-fit:cover;transform:scaleX(-1)}
.cam-oval{position:absolute;inset:0;pointer-events:none}
.cam-oval svg{width:100%;height:100%}
.cam-pose{position:absolute;top:12px;left:0;right:0;text-align:center;color:#fff;
  font-weight:700;font-size:15px;text-shadow:0 1px 4px rgba(0,0,0,.6)}
.cam-status{position:absolute;top:38px;left:0;right:0;text-align:center;color:#fff;
  font-weight:600;font-size:12.5px;opacity:.9;text-shadow:0 1px 4px rgba(0,0,0,.6);
  transition:color .15s}
.cam-status.searching{color:#e8e8ea}
.cam-status.hold{color:#ffd166}
.cam-status.good{color:#7CFFB2}
.cam-flash{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  font-size:64px;font-weight:800;color:#22c55e;background:rgba(255,255,255,.14);
  animation:flashPulse .5s ease}
@keyframes flashPulse{0%{opacity:0;transform:scale(.7)}30%{opacity:1;transform:scale(1.05)}100%{opacity:0;transform:scale(1)}}
.cam-controls{display:flex;gap:10px;justify-content:center;margin-top:14px;flex-wrap:wrap}
.thumbs{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px;justify-content:center}
.thumb{width:64px;height:80px;border-radius:10px;overflow:hidden;position:relative;border:2px solid var(--line)}
.thumb img{width:100%;height:100%;object-fit:cover}
.thumb .x{position:absolute;top:2px;right:2px;background:rgba(0,0,0,.6);color:#fff;border:none;
  width:18px;height:18px;border-radius:50%;font-size:11px;cursor:pointer;line-height:1}
.thumb .pose{position:absolute;bottom:0;left:0;right:0;background:rgba(0,0,0,.55);color:#fff;
  font-size:10px;text-align:center;padding:1px}
.progress-dots{display:flex;gap:6px;justify-content:center;margin:10px 0 4px}
.progress-dots i{width:9px;height:9px;border-radius:50%;background:var(--line)}
.progress-dots i.done{background:var(--ok)}
.progress-dots i.active{background:var(--red-2)}

.btn{border:none;border-radius:12px;padding:13px 20px;font-size:15px;font-weight:700;
  cursor:pointer;font-family:inherit;transition:transform .12s,box-shadow .12s,opacity .12s}
.btn:active{transform:scale(.98)}
.btn-primary{background:linear-gradient(135deg,var(--red-2),var(--red-3));color:#fff;box-shadow:var(--shadow)}
.btn-ghost{background:#fff;border:1.5px solid var(--line);color:#333}
.btn-block{width:100%}
.btn[disabled]{opacity:.5;cursor:not-allowed}
.btn-lg{padding:15px 24px;font-size:16px}

.footer{text-align:center;color:var(--muted);font-size:12.5px;margin-top:26px}
.footer a{color:var(--muted)}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);
  background:#1c1c1e;color:#fff;padding:12px 18px;border-radius:12px;font-size:14px;
  box-shadow:var(--shadow);opacity:0;transition:opacity .2s;z-index:50;max-width:90%}
.toast.show{opacity:1}
.success-screen{text-align:center;padding:36px 20px}
.success-screen .check{width:76px;height:76px;border-radius:50%;background:#eefaf1;color:var(--ok);
  display:flex;align-items:center;justify-content:center;font-size:40px;margin:0 auto 16px}
@media(max-width:520px){.header h1{font-size:19px}.social a{flex:1 1 100%}}