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

        body {
            font-family: 'Inter', sans-serif;
            min-height: 100vh;
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            overflow-x: hidden;
        }

        /* Animations background */
        body::before {
            content: '';
            position: absolute;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(255,255,255,0.05) 1px, transparent 1px);
            background-size: 50px 50px;
            animation: moveDots 20s linear infinite;
            pointer-events: none;
        }

        @keyframes moveDots {
            0% { transform: translate(0, 0); }
            100% { transform: translate(50px, 50px); }
        }

        .login-container {
            width: 100%;
            max-width: 1200px;
            margin: 20px;
            position: relative;
            z-index: 1;
        }

        .login-card {
            display: flex;
            background: rgba(255, 255, 255, 0.98);
            border-radius: 32px;
            overflow: hidden;
            box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
            animation: fadeInUp 0.6s ease-out;
        }

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

        /* Left side - Branding */
        .login-brand {
            flex: 1;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            padding: 40px 50px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            color: white;
            position: relative;
            overflow: hidden;
        }

        .login-brand::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
            animation: pulse 8s ease-in-out infinite;
        }

        @keyframes pulse {
            0%, 100% { transform: scale(1); opacity: 0.5; }
            50% { transform: scale(1.1); opacity: 0.8; }
        }

        .logo-area {
            position: relative;
            z-index: 1;
            animation: slideInLeft 0.6s ease-out;
        }

        @keyframes slideInLeft {
            from {
                opacity: 0;
                transform: translateX(-30px);
            }
            to {
                opacity: 1;
                transform: translateX(0);
            }
        }

        .logo-icon {
            width: 70px;
            height: 70px;
            background: rgba(255, 255, 255, 0.2);
            border-radius: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 30px;
            backdrop-filter: blur(10px);
            transition: transform 0.5s ease;
        }

        .logo-icon:hover {
            transform: rotate(180deg) scale(1.1);
        }

        .logo-icon i {
            font-size: 40px;
            color: white;
        }

        .logo-area h1 {
            font-size: 42px;
            font-weight: 800;
            margin-bottom: 15px;
            letter-spacing: -1px;
        }

        .logo-area p {
            font-size: 16px;
            opacity: 0.9;
            line-height: 1.6;
        }

        .brand-features {
            position: relative;
            z-index: 1;
            margin-top: 30px;
        }

        .feature-item {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 25px;
            animation: slideInLeft 0.6s ease-out;
            animation-fill-mode: both;
        }

        .feature-item:nth-child(1) { animation-delay: 0.1s; }
        .feature-item:nth-child(2) { animation-delay: 0.2s; }
        .feature-item:nth-child(3) { animation-delay: 0.3s; }

        .feature-icon {
            width: 45px;
            height: 45px;
            background: rgba(255, 255, 255, 0.15);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s;
        }

        .feature-icon i {
            font-size: 22px;
        }

        .feature-text h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 5px;
        }

        .feature-text p {
            font-size: 13px;
            opacity: 0.8;
        }

        .copyright {
            position: relative;
            z-index: 1;
            font-size: 12px;
            opacity: 0.7;
            margin-top: 20px;
        }

        /* Right side - Form */
        .login-form {
            flex: 1;
            padding: 40px 50px;
            background: white;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .form-header {
            margin-bottom: 24px;
            animation: fadeInUp 0.6s ease-out;
        }

        .form-header h2 {
            font-size: 32px;
            font-weight: 700;
            color: #1a1a2e;
            margin-bottom: 10px;
        }

        .form-header p {
            color: #666;
            font-size: 14px;
        }

        .input-group {
            margin-bottom: 25px;
            animation: fadeInUp 0.6s ease-out;
            animation-fill-mode: both;
        }

        .input-group:nth-child(1) { animation-delay: 0.1s; }
        .input-group:nth-child(2) { animation-delay: 0.2s; }

        .input-label {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 10px;
            color: #333;
            font-weight: 500;
            font-size: 14px;
        }

        .input-label i {
            color: #667eea;
            font-size: 14px;
        }

        .input-field {
            width: 100%;
            padding: 14px 16px;
            border: 2px solid #e2e8f0;
            border-radius: 12px;
            font-size: 15px;
            font-family: 'Inter', sans-serif;
            transition: all 0.3s;
            outline: none;
        }

        .input-field:focus {
            border-color: #667eea;
            box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
        }

        .input-field.error {
            border-color: #f56565;
            animation: shake 0.3s ease-in-out;
        }

        .input-field.success {
            border-color: #48bb78;
            background: #f0fff4;
        }

        @keyframes shake {
            0%, 100% { transform: translateX(0); }
            25% { transform: translateX(-5px); }
            75% { transform: translateX(5px); }
        }

        .password-wrapper {
            position: relative;
        }

        .toggle-password {
            position: absolute;
            right: 16px;
            top: 50%;
            transform: translateY(-50%);
            cursor: pointer;
            color: #999;
            transition: color 0.3s;
        }

        .toggle-password:hover {
            color: #667eea;
        }

        .form-options {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 30px;
            animation: fadeInUp 0.6s ease-out;
            animation-delay: 0.3s;
            animation-fill-mode: both;
        }

        .checkbox {
            display: flex;
            align-items: center;
            gap: 8px;
            cursor: pointer;
            font-size: 13px;
            color: #666;
        }

        .checkbox input {
            width: 16px;
            height: 16px;
            cursor: pointer;
            accent-color: #667eea;
        }

        .forgot-link {
            font-size: 13px;
            color: #667eea;
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s;
        }

        .forgot-link:hover {
            color: #764ba2;
        }

        .btn-login {
            width: 100%;
            padding: 14px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border: none;
            border-radius: 12px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            position: relative;
            overflow: hidden;
            animation: fadeInUp 0.6s ease-out;
            animation-delay: 0.4s;
            animation-fill-mode: both;
        }

        .btn-login:hover:not(:disabled) {
            transform: translateY(-2px);
            box-shadow: 0 10px 25px -5px rgba(102, 126, 234, 0.4);
        }

        .btn-login:active:not(:disabled) {
            transform: translateY(0);
        }

        .btn-login:disabled {
            opacity: 0.7;
            cursor: not-allowed;
        }

        .btn-login .spinner {
            display: none;
            width: 20px;
            height: 20px;
            border: 2px solid rgba(255,255,255,0.3);
            border-top-color: white;
            border-radius: 50%;
            animation: spin 0.6s linear infinite;
            margin: 0 auto;
        }

        .btn-login.loading .spinner {
            display: block;
        }

        .btn-login.loading .btn-text {
            display: none;
        }

        @keyframes spin {
            to { transform: rotate(360deg); }
        }

        .error-message {
            background: #fed7d7;
            color: #c53030;
            padding: 12px 16px;
            border-radius: 12px;
            font-size: 13px;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
            animation: fadeInUp 0.3s ease-out;
        }

        .error-message i {
            font-size: 16px;
        }

        .success-message {
            background: #c6f6d5;
            color: #22543d;
            padding: 12px 16px;
            border-radius: 12px;
            font-size: 13px;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
            animation: fadeInUp 0.3s ease-out;
        }

        .success-message i {
            font-size: 16px;
        }

        /* Responsive */
        @media (max-width: 900px) {
            .login-card {
                flex-direction: column;
            }
            
            .login-brand {
                padding: 40px;
            }
            
            .login-form {
                padding: 40px;
            }
            
            .brand-features {
                margin-top: 30px;
            }
        }

        @media (max-width: 480px) {
            .login-form {
                padding: 30px 20px;
            }
            
            .form-header h2 {
                font-size: 24px;
            }
        }