* { box-sizing: border-box; margin: 0; padding: 0; font-family: 'Segoe UI', sans-serif; }
body { background: radial-gradient(circle, #0f172a 0%, #020617 100%); color: #f1f5f9; min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 20px; }
.card { background: rgba(30, 41, 59, 0.4); backdrop-filter: blur(20px); border: 1px solid rgba(255, 255, 255, 0.08); padding: 40px; width: 100%; max-width: 550px; border-radius: 24px; box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5); }
.top-bar { display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid rgba(255, 255, 255, 0.08); padding-bottom: 20px; margin-bottom: 20px; }
.logout-btn { color: #f87171; text-decoration: none; font-size: 14px; border: 1px solid rgba(239, 68, 68, 0.2); padding: 6px 12px; border-radius: 8px; background: rgba(239, 68, 68, 0.05); }
.info-box { background: rgba(2, 6, 23, 0.4); border: 1px solid rgba(255, 255, 255, 0.05); padding: 20px; border-radius: 16px; margin-bottom: 20px; }
.download-btn { width: 100%; background: linear-gradient(to right, #4f46e5, #7c3aed); color: #fff; text-decoration: none; display: block; text-align: center; padding: 16px; border-radius: 14px; font-weight: 600; margin-bottom: 15px; text-transform: uppercase; font-size: 14px; }
.btn-secondary { background: rgba(255, 255, 255, 0.05); border: 1px solid rgba(255, 255, 255, 0.08); color: #fff; padding: 12px 18px; border-radius: 10px; text-decoration: none; display: inline-block; font-size: 14px; border: none; font-weight: 600; }
.qr-container { display: flex; flex-direction: column; align-items: center; justify-content: center; background: #ffffff; padding: 10px; border-radius: 16px; width: 220px; margin: 20px auto; box-shadow: 0 10px 25px rgba(0,0,0,0.3); }
.secret-field { background: #020617; padding: 12px; border-radius: 10px; font-family: monospace; font-size: 16px; color: #34d399; text-align: center; letter-spacing: 2px; margin: 15px 0; border: 1px dashed rgba(52, 211, 153, 0.3); }
button.btn-activate { width: 100%; background: #059669; color: #fff; border: none; padding: 14px; font-size: 15px; border-radius: 14px; font-weight: 600; cursor: pointer; }