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

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            overflow: hidden;
        }

        .bg-shapes {
            position: absolute;
            width: 100%;
            height: 100%;
            overflow: hidden;
            z-index: 0;
        }

        .shape {
            position: absolute;
            background: rgba(255, 255, 255, 0.15);
            border-radius: 50%;
            animation: float 15s infinite ease-in-out;
            backdrop-filter: blur(5px);
        }

        .shape:nth-child(1) {
            width: 80px;
            height: 80px;
            top: 10%;
            left: 10%;
            animation: float 12s infinite ease-in-out;
            animation-delay: 0s;
        }

        .shape:nth-child(2) {
            width: 120px;
            height: 120px;
            top: 70%;
            left: 80%;
            animation: float 18s infinite ease-in-out;
            animation-delay: 2s;
        }

        .shape:nth-child(3) {
            width: 60px;
            height: 60px;
            top: 40%;
            left: 5%;
            animation: float 10s infinite ease-in-out;
            animation-delay: 4s;
        }

        .shape:nth-child(4) {
            width: 100px;
            height: 100px;
            top: 20%;
            left: 85%;
            animation: float 14s infinite ease-in-out;
            animation-delay: 1s;
        }

        .shape:nth-child(5) {
            width: 90px;
            height: 90px;
            top: 60%;
            left: 15%;
            animation: float 16s infinite ease-in-out;
            animation-delay: 3s;
        }

        .shape:nth-child(6) {
            width: 70px;
            height: 70px;
            top: 30%;
            left: 50%;
            animation: float 11s infinite ease-in-out;
            animation-delay: 5s;
        }

        .shape:nth-child(7) {
            width: 110px;
            height: 110px;
            top: 80%;
            left: 60%;
            animation: float 13s infinite ease-in-out;
            animation-delay: 2.5s;
        }

        .shape:nth-child(8) {
            width: 50px;
            height: 50px;
            top: 15%;
            left: 70%;
            animation: float 9s infinite ease-in-out;
            animation-delay: 4.5s;
        }

        @keyframes float {
            0%, 100% {
                transform: translateY(0) translateX(0) rotate(0deg) scale(1);
                opacity: 0.3;
            }
            25% {
                transform: translateY(-40px) translateX(30px) rotate(90deg) scale(1.1);
                opacity: 0.5;
            }
            50% {
                transform: translateY(-60px) translateX(-20px) rotate(180deg) scale(0.9);
                opacity: 0.7;
            }
            75% {
                transform: translateY(-30px) translateX(-40px) rotate(270deg) scale(1.05);
                opacity: 0.4;
            }
        }

        .container {
            background: rgba(255, 255, 255, 0.95);
            padding: 50px 40px;
            border-radius: 20px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
            width: 400px;
            position: relative;
            z-index: 1;
            animation: slideIn 0.8s ease-out;
        }

        @keyframes slideIn {
            from {
                opacity: 0;
                transform: translateY(-50px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .avatar {
            width: 100px;
            height: 100px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            border-radius: 50%;
            margin: 0 auto 30px;
            display: flex;
            justify-content: center;
            align-items: center;
            font-size: 48px;
            color: white;
            animation: bounce 1s ease-in-out 0.5s;
        }

        @keyframes bounce {
            0%, 100% { transform: scale(1); }
            50% { transform: scale(1.1); }
        }

        h2 {
            text-align: center;
            color: #333;
            margin-bottom: 30px;
            font-size: 28px;
            animation: fadeIn 1s ease-in 0.3s both;
        }

        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 1; }
        }

        .input-group {
            margin-bottom: 25px;
            position: relative;
            animation: slideUp 0.6s ease-out both;
        }

        .input-group:nth-child(3) {
            animation-delay: 0.2s;
        }

        .input-group:nth-child(4) {
            animation-delay: 0.4s;
        }

        @keyframes slideUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .input-group input { 
            width: 100%;
            padding: 15px 15px 15px 45px;
            border: 2px solid #e0e0e0;
            border-radius: 10px;
            font-size: 16px;
            transition: all 0.3s ease;
            outline: none;
        }

        .input-group input:focus {
            border-color: #667eea;
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
        }

        .input-group i {
            position: absolute;
            left: 15px;
            top: 50%;
            transform: translateY(-50%);
            color: #999;
            transition: color 0.3s ease;
        }

        .input-group input:focus + i {
            color: #667eea;
        }

        .remember-forgot {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 25px;
            font-size: 14px;
            animation: fadeIn 1s ease-in 0.6s both;
        }

        .remember-forgot label {
            display: flex;
            align-items: center;
            cursor: pointer;
            color: #666;
        }

        .remember-forgot input[type="checkbox"] {
            margin-right: 8px;
            cursor: pointer;
        }

        .remember-forgot a {
            color: #667eea;
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .remember-forgot a:hover {
            color: #764ba2;
            text-decoration: underline;
        }

        .btn {
            width: 100%;
            padding: 15px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border: none;
            border-radius: 10px;
            font-size: 18px;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s ease;
            animation: fadeIn 1s ease-in 0.7s both;
            position: relative;
            overflow: hidden;
        }

        .btn::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 0;
            height: 0;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.3);
            transform: translate(-50%, -50%);
            transition: width 0.6s, height 0.6s;
        }

        .btn:hover::before {
            width: 300px;
            height: 300px;
        }

        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 25px rgba(102, 126, 234, 0.5);
        }

        .btn:active {
            transform: translateY(-1px);
        }

        .signup-link {
            text-align: center;
            margin-top: 25px;
            color: #666;
            font-size: 14px;
            animation: fadeIn 1s ease-in 0.8s both;
        }

        .signup-link a {
            color: #667eea;
            text-decoration: none;
            font-weight: bold;
            transition: color 0.3s ease;
        }

        .signup-link a:hover {
            color: #764ba2;
            text-decoration: underline;
        }