body { font-family: 'Plus Jakarta Sans', sans-serif; background-color: #0f172a; background-image: radial-gradient(circle at 15% 50%, rgba(37, 99, 235, 0.15), transparent 25%), radial-gradient(circle at 85% 30%, rgba(14, 165, 233, 0.15), transparent 25%); display: flex; justify-content: center; align-items: center; min-height: 100vh; margin: 0; gap: 40px; flex-wrap: wrap; padding: 40px; box-sizing: border-box; overflow-x: hidden; position: relative; }
        body::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: url('data:image/svg+xml;utf8,<svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg"><filter id="noiseFilter"><feTurbulence type="fractalNoise" baseFrequency="0.65" numOctaves="3" stitchTiles="stitch"/></filter><rect width="100%" height="100%" filter="url(%23noiseFilter)" opacity="0.04"/></svg>'); pointer-events: none; z-index: 0; }
        .login-card, .leaderboard-card { position: relative; z-index: 1; background: rgba(30, 41, 59, 0.5); backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px); padding: 40px; border-radius: 24px; border: 1px solid rgba(255, 255, 255, 0.08); box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5); color: white; transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease; }
        .login-card:hover, .leaderboard-card:hover { transform: translateY(-5px); box-shadow: 0 30px 60px -12px rgba(0, 0, 0, 0.6); border-color: rgba(255, 255, 255, 0.15); }
        .login-card { width: 100%; max-width: 420px; text-align: center; }
        .leaderboard-card { width: 100%; max-width: 450px; }
        .leaderboard-card h2 { margin-top: 0; color: #fff; font-weight: 800; font-size: 24px; margin-bottom: 24px; display: flex; align-items: center; gap: 12px; }
        .leaderboard-table { width: 100%; border-collapse: collapse; font-size: 14px; }
        .leaderboard-table th { text-align: left; padding: 12px; border-bottom: 1px solid rgba(255,255,255,0.1); color: #94a3b8; font-weight: 600; text-transform: uppercase; font-size: 12px; letter-spacing: 0.5px; }
        .leaderboard-table td { padding: 14px 12px; border-bottom: 1px solid rgba(255,255,255,0.05); }
        .leaderboard-table tr:last-child td { border-bottom: none; }
        .login-card h2 { margin-top: 0; color: #fff; font-weight: 800; font-size: 24px; margin-bottom: 8px; text-align: left; }
        .login-card p { color: #94a3b8; font-size: 14px; margin-bottom: 24px; line-height: 1.6; text-align: left; }
        .form-group { margin-bottom: 20px; text-align: left; }
        .form-group label { display: block; margin-bottom: 8px; font-size: 14px; font-weight: 600; color: #e2e8f0; }
        .form-group input { width: 100%; padding: 14px 16px; border: 1px solid rgba(255,255,255,0.1); border-radius: 12px; font-size: 14px; outline: none; transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); box-sizing: border-box; background: rgba(15, 23, 42, 0.4); color: white; }
        .form-group input:focus { border-color: #3b82f6; background: rgba(15, 23, 42, 0.6); box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2); }
        .btn-submit { width: 100%; background: linear-gradient(135deg, #2563eb, #0ea5e9); color: white; border: none; padding: 16px; border-radius: 12px; font-weight: 700; font-size: 15px; cursor: pointer; transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); box-shadow: 0 8px 20px -6px rgba(37, 99, 235, 0.5); margin-top: 8px; display: inline-flex; align-items: center; justify-content: center; gap: 8px; position: relative; overflow: hidden; }
        .btn-submit:hover { transform: translateY(-2px); box-shadow: 0 12px 24px -8px rgba(37, 99, 235, 0.7); }
        .btn-submit::after { content: ''; position: absolute; top: 0; left: -100%; width: 50%; height: 100%; background: linear-gradient(to right, transparent, rgba(255,255,255,0.2), transparent); transform: skewX(-20deg); transition: 0.5s; }
        .btn-submit:hover::after { left: 150%; }
        
        .security-anim { position: relative; width: 90px; height: 90px; margin: 0 auto 24px; display: flex; align-items: center; justify-content: center; }
        .pulse-ring { position: absolute; width: 100%; height: 100%; border-radius: 50%; background: rgba(59, 130, 246, 0.15); animation: pulse 2.5s infinite cubic-bezier(0.4, 0, 0.2, 1); }
        .pulse-ring:nth-child(2) { animation-delay: 1.25s; }
        .shield-icon { position: relative; z-index: 2; display: flex; align-items: center; justify-content: center; animation: float 3s ease-in-out infinite; filter: drop-shadow(0 10px 15px rgba(59, 130, 246, 0.3)); }
        
        @keyframes fadeOut { from { opacity: 1; transform: translateY(0); filter: blur(0); } to { opacity: 0; transform: translateY(-20px); filter: blur(4px); } }
        @keyframes fadeIn { from { opacity: 0; transform: translateY(20px); filter: blur(4px); } to { opacity: 1; transform: translateY(0); filter: blur(0); } }
        @keyframes pulse { 0% { transform: scale(0.6); opacity: 0.8; } 100% { transform: scale(1.6); opacity: 0; } }
        @keyframes float { 0%, 100% { transform: translateY(0px); } 50% { transform: translateY(-8px); } }