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

body{
    background : linear-gradient(to bottom , #155 , rgb(19, 196, 196));
    height : 100%;
    font-family : "Poppins" , sans-serif;
    display: flex;
    justify-content: center;
    align-items: center; 
    padding : 20px;
    color : #2d3436;
}

.container{
    width : 100%;
    height : 100%;
    max-width : 1200px;
    box-shadow : 0 2px 8px rgba(0, 0, 0, 0.5);
    padding : 2rem;
    border-radius : 24px;
    background-color: rgb(118, 156, 156);
}
h1{
    text-align: center;
    color : #1a202c;
    margin-bottom : 35px ;
    font-size : 2.2rem;
    letter-spacing: -0.5px;

}
h2 {
    color: #2d3748;
    margin-bottom : 1rem;
    font-size : 1.25rem ;
    font-weight :  500;
}


.balance-container {
    text-align  : center ; 
    margin-bottom : 35px;
    padding : 24px ;
    background : linear-gradient(135deg , #a8d5ba , rgb(16, 153, 153));
    border-radius: 1rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.balance-container h1{
    font-size : 3rem ; 
    margin : 15px 0;
}
.summary , .main-content{
    display : grid ; 
    grid-template-columns: 1fr 1fr;
    gap : 24px;
}
.summary{
    margin-bottom : 24px;
}
.income , .expenses {
    background-color : white;
    padding : 24px;
    border-radius : 1rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    transition : transform 0.2s ease;
}

.income:hover , .expenses:hover{
    transform : translateY(-2px);
}
.income h3{
    color : #059669;
    font-size : 1.1rem;
    font-weight : 500;
}
.expenses h3{
    color : #dc2626;
    font-size : 1.1rem;
    font-weight : 500;
}
.income {
    color: #059669;
}
.expense {
    color: #dc2626;
}
.income p , .expenses p{
    font-size : 1.75rem;
    font-weight : 600;
    margin-top : 12px;
}

.transaction-container{
    height : 100%;
    display : flex;
    flex-direction : column;
}
#transaction-list {
    list-style : none;
    max-height : 500px;
    overflow-y : auto;
    padding-right : 8px;
    flex-grow: 1;
}

#transaction-list::-webkit-scrollbar {
    width : 8px
}
#transaction-list::-webkit-scrollbar-track{
    background-color: #f1f1f1;
    border-radius : 4px;
}
#transaction-list::-webkit-scrollbar-thumb{
    background-color: #cbd5e0;
    border-radius : 4px;
}
#transaction-list::-webkit-scrollbar-thumb:hover{
    background-color : #a0aec0;
}

.transaction {
    display : flex;
    justify-content: space-between;
    align-items: center;
    padding : 1rem 1.2rem;
    margin-bottom: 12px ;
    border-radius : 12px ; 
    background-color: #fff;
    box-shadow : 0 2px 8px rgba(0, 0, 0, 0.05);
    transition : all 0.2s ease;
    border-right : 5px solid;
    animation : slideIn 0.3s ease;
}
@keyframes slideIn {
    from{
        opacity: 0;
        transform : translateX(-20px);
    }
    to{
        opacity: 1;
        transform : translateX(0px);
    }
}


.transaction:hover{
    transform : translateX(4px);
    box-shadow : 0 4px 12px rgba(0,0,0,0.1);
}
.tansaction.income p{
    color: #059669;
}
.tansaction.expenses p{
    color: #dc2626;
}
.transaction .delete-btn{
    background : none ;
    border : none ;
    color : #dc2626;
    cursor : pointer ;
    font-size : 1.4rem ;
    opacity : 0;
    transition : all 0.2s ease;
    padding : 4px 8px ;
    border-radius : 4px ;
    margin-left :12px;
}
.transaction:hover .delete-btn{
    opacity : 1;
}
.transaction .delete-btn:hover{
    background-color : #fee2e2;
    transform : scale(1.1)
}

.form-container{
    background : linear-gradient(135deg , #f6f8fb , #f1f4f8);
    padding : 24px ;
    border-radius : 16px;
    box-shadow : 0 4px 12px rgba(0 , 0,0,0.15);
    height : 100%;
    display : flex;
    flex-direction : column;
}
.form-container form {
    height : 100%;
    display : flex ;
    flex-direction: column;
}
.form-group{
    margin-bottom: 20px;
}
label {
    display:block;
    margin-bottom : 8px;
    color : #4a5568;
    font-weight: 500;
}
input{
    width : 100%;
    padding : 12px 16px ;
    border : 2px solid #e2e8f0;
    border-radius : 8px;
    font-size : 1rem;
    transition : all    0.2s ease;
    background-color : white;
}
input:focus{
    outline: none;
    border-color : #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 134, 0.1);
}



input:hover{
    border-color : #cbd5e0;

}

small {
    color : #718096;
    font-size : 0.875rem;
    margin-top : 4px ;
    display : block;
}


button[type="submit"] {
    width : 100%;
    padding : 14px;
    background :linear-gradient(135deg , #2e8b57 0% , #3cb371 100%);
    color :white;
    border:none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    transition : all 0.2 ease ;
    box-shadow: 0 4px 12px rgba(102 , 126 , 234 , 0.2);
    margin-top : auto;
}
button[type="submit"]:hover{
    transform : translateY(-2px);
    box-shadow: 0 6px 16px rgba(102 , 126 , 234 , 0.3);   
}
button[type="submit"]:active{
    transform : translateY(0);

}
@media (max-width : 900px){
    .main-content {
        grid-template-columns : 1fr;

    }
    #transaction-list {
        max-height: 300px;
    }
}
@media (max-width : 480px) {
    .container{ 
        padding : 24px;
    }
    .summary {
        grid-template-columns: 1fr;
        gap : 16px;
    }
    .balance-container h1{
        font-size : 2.5rem;
    }
    .income p , .expenses p {
        font-size : 1.5rem;
    }
    .transaction {
        padding : 14px 16px;
    }
    h1{
        font-size : 1.8rem;
    }
    
}