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

        :root {
            --primary: #005a9e;
            --primary-dark: #1e40af;
            --secondary: #8b5cf6;
            --success: #10b981;
            --danger: #c80028;
            --warning: #f59e0b;
            --dark: #1e293b;
            --gray: #64748b;
            --light: #f1f5f9;
            --white: #ffffff;
            --shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.15);
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: var(--light);
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
            position: relative;
            overflow-x: hidden;
        }

        /* Animated background particles */
        body::before {
            content: '';
            position: absolute;
            width: 100%;
            height: 100%;
            background-image: 
                radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
            animation: float 20s ease-in-out infinite;
        }

        @keyframes float {
            0%, 100% { transform: translateY(0px); }
            50% { transform: translateY(-20px); }
        }

        .main-container {
            max-width: 480px;
            width: 100%;
            position: relative;
            z-index: 1;
            animation: slideUp 0.6s ease-out;
        }

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

        .header {
            background: var(--primary);
            border-radius: 10px 10px 0 0;
            padding: 20px 15px 15px;
            text-align: center;
            border-bottom: 2px solid dashed var(--warning);
            position: relative;
            overflow: hidden;
        }

        .header::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            
        }

        .logo-container {
            margin-bottom: 10px;
            animation: zoomIn 0.5s ease-out 0.2s both;
        }

        @keyframes zoomIn {
            from {
                opacity: 0;
                transform: scale(0.5);
            }
            to {
                opacity: 1;
                transform: scale(1);
            }
        }

        .logo {
            width: 100px;
            height: 100px;
            margin: 0 auto;
           background: var(--white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            
            justify-content: center;
           
            position: relative;
        }
      

        .logo::after {
            content: '';
            position: absolute;
            width: 90%;
            height: 90%;
            
            border-radius: 50%;
            opacity: 0;
            animation: ping 2s cubic-bezier(0, 0, 0.2, 1) infinite;
        }

        @keyframes ping {
            75%, 100% {
                transform: scale(1.5);
                opacity: 0;
            }
        }

        .logo img {
            max-width: 80%;
            max-height: 80%;
            object-fit: contain;
        }

        .system-title {
            font-size: 19px;
             
            font-weight: 600;
            color: var(--white);
            margin-bottom: 8px;
            letter-spacing: 0.8px;
        }

       .system-subtitle {
 font-family: 'Great Vibes', cursive;
  font-size: 1.6rem;
 
  opacity: 0.8;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 10px;
  color: var(--white);
  animation: pulseFade 4s ease-in-out infinite;
}




        .system-subtitle span {
             
            animation: bounce 2s infinite;
        }

        @keyframes bounce {
            0%, 100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-5px);
            }
        }
        .tab-container {
            display: flex;
            background: var(--white);
            padding: 0 30px;
            gap: 10px;
            box-shadow: var(--shadow);
        }

        .tab-button {
            flex: 1;
            padding: 18px 20px;
            border: none;
            background: transparent;
            color: var(--gray);
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .tab-button::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--primary-dark);
            transform: scaleX(0);
            transition: transform 0.3s ease;
        }

        .tab-button.active {
            color: var(--primary);
        }

        .tab-button.active::after {
            transform: scaleX(1);
        }

        .tab-button:hover:not(.active) {
            color: var(--primary);
            background: var(--light);
        }

        .tab-button i {
            font-size: 18px;
        }

        .content-area {
            background: var(--white);
            border-radius: 0 0 10px 10px;
            box-shadow: var(--shadow);
        }

        .tab-content {
            display: none;
            animation: fadeIn 0.4s ease-out;
        }

        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(10px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .form-card {
            padding: 40px 30px;
        }

        .card-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 30px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .card-title i {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: var(--white);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
        }

        .alert {
            padding: 16px 20px;
            border-radius: 10px;
            margin-bottom: 25px;
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 14px;
            animation: shake 0.5s ease-out;
        }

        @keyframes shake {
            0%, 100% { transform: translateX(0); }
            25% { transform: translateX(-10px); }
            75% { transform: translateX(10px); }
        }

        .alert-danger {
            background: #fee2e2;
            color: var(--danger);
            border: 1px solid #fecaca;
        }

        .alert i {
            font-size: 20px;
        }

        .form-group {
            margin-bottom: 25px;
        }

        .form-label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 10px;
        }

        .password-container {
            position: relative;
        }

        .form-input {
            width: 100%;
            padding: 16px 50px 16px 20px;
            border: 2px solid #e2e8f0;
            border-radius: 10px;
            font-size: 15px;
            transition: all 0.3s ease;
            background: var(--white);
            color: var(--dark);
        }

        .form-input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
        }

        .form-input::placeholder {
            color: #94a3b8;
        }

        .toggle-password {
            position: absolute;
            right: 16px;
            top: 50%;
            transform: translateY(-50%);
            background: none;
            border: none;
            color: var(--gray);
            cursor: pointer;
            padding: 8px;
            transition: all 0.3s ease;
            border-radius: 6px;
        }

        .toggle-password:hover {
            color: var(--primary);
            background: var(--light);
        }

        .login-button {
            width: 100%;
            padding: 18px;
            border: none;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: var(--white);
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
            position: relative;
            overflow: hidden;
        }

        .login-button::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
            transition: left 0.5s ease;
        }

        .login-button:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
        }

        .login-button:hover::before {
            left: 100%;
        }

        .login-button:active {
            transform: translateY(0);
        }

        .login-button i {
            font-size: 18px;
        }

        footer {
            margin-top: 10px;
            padding-top: 10px;
            border-top: 1px solid #e2e8f0;
            text-align: center;
            font-size: 12px;
            color: var(--gray);
        }

        /* Loading state */
        .login-button.loading {
            pointer-events: none;
            opacity: 0.7;
        }

        .login-button.loading i {
            animation: spin 1s linear infinite;
        }

        @keyframes spin {
            from { transform: rotate(0deg); }
            to { transform: rotate(360deg); }
        }

        /* Responsive */
        @media (max-width: 640px) {
            .main-container {
                max-width: 100%;
            }

            .header {
                padding: 20px 10px 10px;
            }

            .system-title {
                font-size: 16px;
            }

            .system-subtitle {
                font-size: 18px;
            }

            .tab-container {
                padding: 0 20px;
            }

            .tab-button {
                padding: 16px;
                font-size: 14px;
            }

            .form-card {
                padding: 20px 10px;
            }

            .card-title {
                font-size: 14px;
            }
        }

        /* Success animation */
        @keyframes success {
            0% { transform: scale(0); opacity: 0; }
            50% { transform: scale(1.1); }
            100% { transform: scale(1); opacity: 1; }
        }

        .success-icon {
            animation: success 0.5s ease-out;
        }