* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        body {
            background: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
            height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            overflow: hidden;
        }
        
        .container {
            position: relative;
            width: 100%;
            max-width: 450px;
            min-height: 500px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
        }
        
        /* Splash Screen Styling */
        .splash-screen {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            display: flex;
            justify-content: center;
            align-items: center;
            background: linear-gradient(135deg, #3498db 0%, #2ecc71 100%);
            border-radius: 15px;
            z-index: 10;
            animation: fadeOut 0.5s ease-in-out forwards;
            animation-delay: 2.5s;
            overflow: hidden;
        }
        
        .splash-content {
            text-align: center;
            z-index: 2;
            position: relative;
        }
        
        .splash-logo {
            font-size: 72px;
            font-weight: 800;
            color: white;
            letter-spacing: 4px;
            text-transform: uppercase;
            position: relative;
            display: inline-block;
            margin-bottom: 20px;
            opacity: 0;
            transform: scale(0.8);
            animation: logoReveal 1.5s ease-out forwards;
            text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
        }
        
        .splash-subtitle {
            color: rgba(255, 255, 255, 0.9);
            font-size: 18px;
            opacity: 0;
            transform: translateY(20px);
            animation: subtitleReveal 1s ease-out forwards;
            animation-delay: 1s;
            font-weight: 300;
        }
        
        /* Animated Background Elements */
        .splash-bg-element {
            position: absolute;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            animation: float 6s infinite ease-in-out;
        }
        
        .splash-bg-element:nth-child(1) {
            width: 80px;
            height: 80px;
            top: 20%;
            left: 20%;
            animation-delay: 0s;
        }
        
        .splash-bg-element:nth-child(2) {
            width: 120px;
            height: 120px;
            top: 60%;
            right: 15%;
            animation-delay: 1s;
        }
        
        .splash-bg-element:nth-child(3) {
            width: 60px;
            height: 60px;
            bottom: 20%;
            left: 15%;
            animation-delay: 2s;
        }
        
        /* System Name Styling */
        .system-name-container {
            text-align: center;
            margin-bottom: 30px;
            animation: fadeIn 1.5s ease;
        }
        
        .system-name {
            font-size: 42px;
            font-weight: 800;
            color: #2c3e50;
            letter-spacing: 3px;
            text-transform: uppercase;
            position: relative;
            display: inline-block;
            padding-bottom: 10px;
        }
        
        .system-name::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 25%;
            width: 50%;
            height: 4px;
            background: linear-gradient(90deg, #3498db, #2ecc71);
            border-radius: 2px;
        }
        
        /* Login Form Styling */
        .login-container {
            background: white;
            padding: 40px;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            width: 100%;
            opacity: 0;
            transform: translateY(20px);
            animation: formReveal 1s ease-out forwards;
            animation-delay: 3s;
        }
        
        .login-header {
            text-align: center;
            margin-bottom: 30px;
        }
        
        .login-header h2 {
            color: #2c3e50;
            font-weight: 700;
            font-size: 28px;
            margin-bottom: 10px;
        }
        
        .login-header p {
            color: #7f8c8d;
        }
        
        .form-group {
            position: relative;
            margin-bottom: 30px;
        }
        
        .form-group input {
            width: 100%;
            padding: 16px;
            border: 1px solid #ddd;
            border-radius: 8px;
            font-size: 16px;
            color: #333;
            background: transparent;
            transition: 0.3s;
        }
        
        .form-group label {
            position: absolute;
            left: 16px;
            top: 16px;
            color: #999;
            pointer-events: none;
            transition: 0.3s;
            background: white;
            padding: 0 8px;
        }
        
        .form-group input:focus {
            border-color: #3498db;
            box-shadow: 0 0 8px rgba(52, 152, 219, 0.3);
            outline: none;
        }
        
        .form-group input:focus + label,
        .form-group input:valid + label {
            top: -12px;
            left: 12px;
            font-size: 14px;
            color: #3498db;
            font-weight: 600;
        }
        
        .btn-login {
            width: 100%;
            padding: 16px;
            border: none;
            border-radius: 8px;
            background: linear-gradient(90deg, #3498db, #2ecc71);
            color: white;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: 0.3s;
            box-shadow: 0 4px 15px rgba(52, 152, 219, 0.2);
        }
        
        .btn-login:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(52, 152, 219, 0.3);
        }
        
        /* Animations */
        @keyframes logoReveal {
            0% {
                opacity: 0;
                transform: scale(0.8);
            }
            50% {
                opacity: 1;
                transform: scale(1.1);
            }
            100% {
                opacity: 1;
                transform: scale(1);
            }
        }
        
        @keyframes subtitleReveal {
            0% {
                opacity: 0;
                transform: translateY(20px);
            }
            100% {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        @keyframes fadeOut {
            0% {
                opacity: 1;
                visibility: visible;
            }
            100% {
                opacity: 0;
                visibility: hidden;
            }
        }
        
        @keyframes formReveal {
            0% {
                opacity: 0;
                transform: translateY(20px);
            }
            100% {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(-20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        @keyframes float {
            0%, 100% {
                transform: translateY(0) rotate(0deg);
            }
            50% {
                transform: translateY(-20px) rotate(10deg);
            }
        }
        
        /* Responsive Design */
        @media (max-width: 600px) {
            .container {
                padding: 0 20px;
            }
            
            .login-container {
                padding: 30px;
            }
            
            .system-name {
                font-size: 32px;
            }
            
            .splash-logo {
                font-size: 50px;
            }
        }