/* Niharika Bihar GS: login, account and unlock pages */
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background: #f4f6f7; color: #333; line-height: 1.5;
       min-height: 100vh; display: flex; flex-direction: column; }
a { color: #16a085; }
.nb-top { background: #2c3e50; padding: 12px 16px; display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.nb-brand { display: flex; align-items: center; gap: 10px; color: #fff; font-weight: 700; text-decoration: none; }
.nb-brand img { width: 34px; height: 34px; border-radius: 9px; }
.nb-top a.nb-btn-top { color: #fff; text-decoration: none; background: #34495e; padding: 7px 12px; border-radius: 6px; font-weight: 600; font-size: .88rem; }
.nb-wrap { flex: 1; display: flex; align-items: flex-start; justify-content: center; padding: 28px 16px 40px; }
.nb-card { background: #fff; border-radius: 14px; box-shadow: 0 6px 18px rgba(0,0,0,.08); padding: 26px 22px; width: 100%; max-width: 440px; }
.nb-card h1 { font-size: 1.35rem; color: #2c3e50; margin-bottom: 4px; }
.nb-sub { color: #64748b; margin-bottom: 18px; font-size: .95rem; }
.nb-logo { display: block; width: 72px; height: 72px; border-radius: 18px; margin: 0 auto 14px; }
.nb-center { text-align: center; }
label { display: block; font-weight: 700; color: #2c3e50; margin: 14px 0 6px; font-size: .95rem; }
label small { font-weight: 600; color: #64748b; }
.nb-field { display: flex; align-items: stretch; border: 2px solid #d5dde5; border-radius: 10px; overflow: hidden; background: #fff; }
.nb-field:focus-within { border-color: #1abc9c; }
.nb-field span { background: #f1f5f9; padding: 12px 10px; font-weight: 700; color: #475569; }
.nb-field input { flex: 1; border: 0; outline: 0; padding: 12px; font-size: 1.05rem; min-width: 0; font-family: inherit; }
input.nb-code { letter-spacing: 10px; font-size: 1.6rem; text-align: center; font-weight: 700; }
.nb-btn { display: block; width: 100%; margin-top: 20px; border: 0; border-radius: 24px; padding: 13px 18px; font-size: 1.05rem;
          font-weight: 700; background: #1abc9c; color: #fff; cursor: pointer; font-family: inherit; text-align: center; text-decoration: none; }
.nb-btn:hover { background: #16a085; }
.nb-btn[disabled] { opacity: .6; cursor: default; }
.nb-btn.nb-ghost { background: #f1f5f9; color: #334155; }
.nb-btn.nb-danger { background: #fff; color: #c0392b; border: 2px solid #f5c6c1; }
.nb-link { background: none; border: 0; color: #16a085; font-weight: 700; cursor: pointer; font-size: .92rem; padding: 6px 0; font-family: inherit; }
.nb-link[disabled] { color: #94a3b8; cursor: default; }
.nb-row { display: flex; justify-content: space-between; gap: 10px; margin-top: 12px; flex-wrap: wrap; }
.nb-err { display: none; margin-top: 14px; padding: 10px 12px; border-radius: 8px; background: #fdecea; color: #b42318; font-size: .92rem; }
.nb-ok { margin-top: 14px; padding: 10px 12px; border-radius: 8px; background: #e8f8f5; color: #0e6655; font-size: .92rem; }
.nb-note { margin-top: 16px; color: #64748b; font-size: .85rem; }
.nb-kv { display: grid; grid-template-columns: auto 1fr; gap: 6px 14px; margin: 14px 0; }
.nb-kv dt { color: #64748b; }
.nb-kv dd { font-weight: 700; color: #2c3e50; word-break: break-all; }
.nb-badge { display: inline-block; padding: 3px 10px; border-radius: 12px; font-weight: 700; font-size: .85rem; }
.nb-badge.paid { background: #e8f8f5; color: #0e6655; }
.nb-badge.free { background: #fef5e7; color: #9a6700; }
.nb-price { font-size: 2.4rem; font-weight: 800; color: #2c3e50; }
.nb-list { margin: 10px 0 0 20px; color: #334155; }
.nb-list li { margin: 4px 0; }
.nb-foot { text-align: center; padding: 18px 16px 24px; color: #64748b; font-size: .82rem; }
[hidden] { display: none !important; }