body { background: #f4f6fb; font-family: 'Plus Jakarta Sans', system-ui, sans-serif; min-height: 100vh; display: flex; align-items: center; }
.auth-card { background: #fff; border-radius: 24px; box-shadow: 0 10px 50px rgba(0,0,0,.08); overflow: hidden; max-width: 900px; width: 100%; border: none; }
.auth-left-register { background: linear-gradient(145deg,#1e1e2f,#0d2b4d); color: #fff; padding: 3.5rem 3rem; display: flex; flex-direction: column; justify-content: center; }
.auth-left-login { background: linear-gradient(145deg,#1e1e2f,#d6304d); color: #fff; padding: 3.5rem 3rem; display: flex; flex-direction: column; justify-content: center; }
.auth-right { padding: 3.5rem 3rem; }
.fw-extrabold { font-weight: 800; }
.form-control { border-radius: 12px; border: 1.5px solid #eee; padding: .8rem 1.2rem; transition: all .2s; }
.form-control:focus { border-color: #e94560; box-shadow: 0 0 0 4px rgba(233,69,96,.1); background: #fff; }
.btn-main { background: #e94560; color: #fff; border: none; border-radius: 12px; padding: .8rem 1.5rem; font-weight: 700; transition: all .3s; }
.btn-main:hover { background: #c7384e; color: #fff; transform: translateY(-1px); box-shadow: 0 4px 12px rgba(233,69,96,.2); }
.lang-switcher { position:fixed; top:1.5rem; right:1.5rem; display:flex; gap:6px; z-index:999; }
.lang-btn { font-size:.78rem; font-weight:700; padding:6px 14px; border-radius:10px; text-decoration:none; border:1.5px solid #eee; color:#666; transition:all .2s; background:rgba(255,255,255,0.8); backdrop-filter: blur(8px); }
.lang-btn.active,.lang-btn:hover { background:#e94560; border-color:#e94560; color:#fff; box-shadow: 0 4px 10px rgba(233,69,96,0.15); }

/* Watermark & Branding */
.floating-watermark {
    position: fixed; bottom: 20px; right: 20px; z-index: 9999;
    background: rgba(255, 255, 255, 0.85); backdrop-filter: blur(10px);
    padding: 7px 16px; border-radius: 30px;
    border: 1px solid rgba(0,0,0,0.06); pointer-events: none;
    font-size: 0.72rem; color: #1a1a2e; font-weight: 700;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
}