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

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            overflow: hidden;
            position: relative;
        }

        /* Animated background particles */
        .bg-animation {
            position: absolute;
            width: 100%;
            height: 100%;
            overflow: hidden;
        }

        .particle {
            position: absolute;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
            animation: float 20s infinite;
        }

        .particle:nth-child(1) {
            width: 80px;
            height: 80px;
            left: 10%;
            animation-delay: 0s;
        }

        .particle:nth-child(2) {
            width: 60px;
            height: 60px;
            left: 20%;
            animation-delay: 2s;
        }

        .particle:nth-child(3) {
            width: 100px;
            height: 100px;
            left: 60%;
            animation-delay: 4s;
        }

        .particle:nth-child(4) {
            width: 70px;
            height: 70px;
            left: 80%;
            animation-delay: 6s;
        }

        .particle:nth-child(5) {
            width: 90px;
            height: 90px;
            left: 40%;
            animation-delay: 8s;
        }

        @keyframes float {

            0%,
            100% {
                transform: translateY(100vh) scale(0);
                opacity: 0;
            }

            50% {
                opacity: 0.3;
            }

            100% {
                transform: translateY(-100vh) scale(1);
                opacity: 0;
            }
        }

        /* Main container */
        .container {
            position: relative;
            z-index: 10;
            text-align: center;
            padding: 20px;
        }

        .card {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(20px);
            border-radius: 24px;
            padding: 60px 50px;
            max-width: 480px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
            animation: slideUp 0.6s ease-out;
        }

        @keyframes slideUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }

            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* Spinner animation */
        .spinner-container {
            position: relative;
            width: 120px;
            height: 120px;
            margin: 0 auto 30px;
        }

        .spinner {
            width: 120px;
            height: 120px;
            border: 6px solid rgba(102, 126, 234, 0.1);
            border-top: 6px solid #667eea;
            border-radius: 50%;
            animation: spin 1s linear infinite;
        }

        @keyframes spin {
            0% {
                transform: rotate(0deg);
            }

            100% {
                transform: rotate(360deg);
            }
        }

        .spinner-inner {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            font-size: 48px;
            animation: pulse 1.5s ease-in-out infinite;
        }

        @keyframes pulse {

            0%,
            100% {
                transform: translate(-50%, -50%) scale(1);
            }

            50% {
                transform: translate(-50%, -50%) scale(1.1);
            }
        }

        h1 {
            color: #1a202c;
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }

        p {
            color: #4a5568;
            font-size: 18px;
            margin-bottom: 30px;
            font-weight: 400;
        }

        /* Countdown circle */
        .countdown-wrapper {
            position: relative;
            width: 100px;
            height: 100px;
            margin: 0 auto;
        }

        .countdown-circle {
            width: 100px;
            height: 100px;
            border-radius: 50%;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
            animation: countdownPulse 1s ease-in-out infinite;
        }

        @keyframes countdownPulse {

            0%,
            100% {
                transform: scale(1);
                box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
            }

            50% {
                transform: scale(1.05);
                box-shadow: 0 15px 40px rgba(102, 126, 234, 0.6);
            }
        }

        .countdown {
            font-size: 48px;
            font-weight: 800;
            color: white;
            text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
        }

        /* Progress dots */
        .progress-dots {
            display: flex;
            justify-content: center;
            gap: 8px;
            margin-top: 30px;
        }

        .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #cbd5e0;
            animation: dotPulse 1.5s ease-in-out infinite;
        }

        .dot:nth-child(1) {
            animation-delay: 0s;
        }

        .dot:nth-child(2) {
            animation-delay: 0.2s;
        }

        .dot:nth-child(3) {
            animation-delay: 0.4s;
        }

        @keyframes dotPulse {

            0%,
            100% {
                background: #cbd5e0;
                transform: scale(1);
            }

            50% {
                background: #667eea;
                transform: scale(1.3);
            }
        }

        /* Success state */
        .success-icon {
            font-size: 72px;
            animation: successBounce 0.6s ease-out;
        }

        @keyframes successBounce {
            0% {
                transform: scale(0);
            }

            50% {
                transform: scale(1.2);
            }

            100% {
                transform: scale(1);
            }
        }