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

body {
    background: linear-gradient(135deg, #2e8b57, #a8d5ba);
    min-height: 100vh;
    font-family: "Poppins", sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    color: #2d3436
}

.container {
    width: 100%;
    max-width: 1200px;
    background-color: #fff;
    padding: 2rem;
    border-radius: 24px;
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
}

h1 {
    text-align: center;
    color: #1a202c;
    margin-bottom: 35px;
    font-size: 2.2rem;
    font-weight: 600;
    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, #6b8e23);
    border-radius: 1rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
}

.balance-container h1{
    font-size: 3rem;
    margin: 15px 0;
    /* border: 1px solid red; */
}

.summary {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-top: 24px;
}

.main-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.income,
.expenses {
    background-color: #fff;
    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 p,
.expenses p {
    margin-top: 8px;
    font-size: 1.75rem;
    font-weight: 600;
}

.income p {
    color: #059669;
}

.expenses p {
    color: #dc2626;
}

.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 {
    /* track is the bg of the scrollbar */
    background-color: #f1f1f1;
    border-radius: 4px;
}

#transaction-list::-webkit-scrollbar-thumb {
    /* thumb is the little bar/ draggable part on the scrollbar */
    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);
}

.transaction.income {
    border-right-color: #059669;
}

.transaction.expense {
    border-right-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, 234, 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: #fff;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.2s 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);
}

/* RESPONSIVENESS */
@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: 1.5rem;
    }
}