* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: linear-gradient(135deg, #0a0f2a 0%, #0a1a3a 50%, #0a0f2a 100%);
            min-height: 100vh;
            color: #fff;
            position: relative;
            overflow-x: hidden;
        }

        /* Animated Blue Signals Background */
        .signal-bg {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: 0;
            overflow: hidden;
        }

        .signal-ring {
            position: absolute;
            border: 2px solid rgba(26, 35, 199, 0.3);
            border-radius: 50%;
            animation: pulse 4s ease-out infinite;
        }

        @keyframes pulse {
            0% {
                transform: scale(0);
                opacity: 0.8;
            }
            100% {
                transform: scale(4);
                opacity: 0;
            }
        }

        .signal-wave {
            position: absolute;
            background: linear-gradient(90deg, transparent, rgba(0, 150, 255, 0.4), transparent);
            height: 2px;
            width: 100%;
            animation: wave 3s linear infinite;
        }

        @keyframes wave {
            0% {
                transform: translateX(-100%);
            }
            100% {
                transform: translateX(100%);
            }
        }

        .signal-particle {
            position: absolute;
            width: 4px;
            height: 4px;
            background: rgba(0, 150, 255, 0.6);
            border-radius: 50%;
            animation: float 8s linear infinite;
        }

        @keyframes float {
            0% {
                transform: translateY(100vh) rotate(0deg);
                opacity: 0;
            }
            10% {
                opacity: 1;
            }
            90% {
                opacity: 1;
            }
            100% {
                transform: translateY(-100px) rotate(360deg);
                opacity: 0;
            }
        }

        /* Main Container */
        .container {
            position: relative;
            z-index: 1;
            max-width: 1400px;
            margin: 0 auto;
            padding: 20px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* Header */
        .header {
            text-align: center;
            padding: 40px 20px;
            animation: fadeInDown 0.8s ease;
        }

        .logo {
            font-size: 3.5rem;
            font-weight: bold;
            background: linear-gradient(135deg, #fff, #3b82f6, #60a5fa);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            margin-bottom: 10px;
        }

        .tagline {
            font-size: 1.1rem;
            color: #94a3b8;
            margin-top: 10px;
        }

        .knot-icon {
            font-size: 3rem;
            margin-bottom: 15px;
            display: inline-block;
            animation: knotRotate 4s ease-in-out infinite;
        }

        @keyframes knotRotate {
            0%, 100% { transform: rotate(0deg); }
            50% { transform: rotate(10deg); }
        }

        /* Two Column Layout */
        .main-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
            margin-top: 20px;
            flex: 1;
        }

        /* Cards */
        .card {
            background: rgba(15, 25, 45, 0.85);
            backdrop-filter: blur(10px);
            border-radius: 24px;
            padding: 30px;
            border: 1px solid rgba(59, 130, 246, 0.3);
            box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            animation: fadeInUp 0.6s ease;
        }

        .card:hover {
            transform: translateY(-5px);
            box-shadow: 0 30px 60px -12px rgba(59, 130, 246, 0.3);
            border-color: rgba(59, 130, 246, 0.6);
        }

        .card-title {
            font-size: 1.8rem;
            margin-bottom: 25px;
            display: flex;
            align-items: center;
            gap: 10px;
            border-bottom: 2px solid #3b82f6;
            padding-bottom: 15px;
        }

        .card-title span {
            background: #3b82f6;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
        }

        /* Form Elements */
        .form-group {
            margin-bottom: 20px;
        }

        label {
            display: block;
            margin-bottom: 8px;
            font-weight: 500;
            color: #cbd5e1;
        }

        textarea, input {
            width: 100%;
            padding: 14px 16px;
            background: rgba(0, 0, 0, 0.4);
            border: 1px solid #334155;
            border-radius: 12px;
            color: #fff;
            font-size: 1rem;
            font-family: inherit;
            transition: all 0.3s ease;
            resize: vertical;
        }

        textarea:focus, input:focus {
            outline: none;
            border-color: #3b82f6;
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
        }

        textarea {
            min-height: 120px;
        }

        /* Button */
        .btn {
            background: linear-gradient(135deg, #3b82f6, #2563eb);
            color: white;
            border: none;
            padding: 12px 28px;
            border-radius: 12px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            width: 100%;
            margin-top: 10px;
        }

        .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 25px -5px rgba(59, 130, 246, 0.5);
        }

        .btn:active {
            transform: translateY(0);
        }

        .btn-secondary {
            background: linear-gradient(135deg, #475569, #334155);
            margin-top: 10px;
        }

        .btn-secondary:hover {
            box-shadow: 0 10px 25px -5px rgba(71, 85, 105, 0.5);
        }

        /* Result Box */
        .result-box {
            background: rgba(0, 0, 0, 0.5);
            border-radius: 12px;
            padding: 16px;
            margin-top: 20px;
            border: 1px solid #334155;
            word-break: break-all;
            max-height: 150px;
            overflow-y: auto;
        }

        .result-label {
            font-size: 0.85rem;
            color: #94a3b8;
            margin-bottom: 8px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        /* Footer */
        .footer {
            text-align: center;
            margin-top: 40px;
            padding: 20px;
            color: #64748b;
            font-size: 0.85rem;
            border-top: 1px solid rgba(59, 130, 246, 0.2);
        }

        /* Responsive */
        @media (max-width: 768px) {
            .main-content {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            
            .logo {
                font-size: 2.5rem;
            }
            
            .card {
                padding: 20px;
            }
            
            .container {
                padding: 15px;
            }
        }
        @media (max-width: 600px) {
    .lock-container {
        transform: scale(0.6);
    }
}
        /* Animations */
        @keyframes fadeInDown {
            from {
                opacity: 0;
                transform: translateY(-30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* Copy button inline */
        .copy-btn {
            background: #3b82f6;
            border: none;
            padding: 4px 12px;
            border-radius: 8px;
            color: white;
            font-size: 0.75rem;
            cursor: pointer;
            transition: all 0.2s;
        }

        .copy-btn:hover {
            background: #2563eb;
        }

        /* Strength Meter */
        .strength-meter {
            margin-top: 8px;
            height: 4px;
            background: #334155;
            border-radius: 2px;
            overflow: hidden;
        }

        .strength-bar {
            height: 100%;
            width: 0%;
            transition: all 0.3s ease;
            border-radius: 2px;
        }