*{
    margin:0;
    padding:0;
    box-sizing:border-box;
    font-family:Arial,sans-serif;
}

body{
    background:#f4f6f9;
    display:flex;
    justify-content:center;
    padding:30px;
    min-height:100vh;
}
.container{
    background:white;
    width:700px;
    max-width:95%;
    padding:30px;
    border-radius:15px;
    box-shadow:0 10px 25px rgba(0,0,0,0.15);
}

h1{
    text-align:center;
    color:#0077b5;
    font-size:48px;
    font-weight:bold;
    margin-bottom:20px;
}

.form{
    display:flex;
    flex-direction:column;
    gap:15px;
}

input,
select{
    padding:12px;
    font-size:16px;
    border:1px solid #ccc;
    border-radius:8px;
}

button{
    padding:12px;
    background:#0077b5;
    color:white;
    border:none;
    border-radius:8px;
    cursor:pointer;
    font-size:16px;
}

button:hover{
    background:#005f90;
}

h2{
    margin-top:25px;
    text-align:center;
}

ul{
    list-style:none;
    margin-top:20px;
}

li{
    background:#f8f8f8;
    padding:12px;
    margin-bottom:10px;
    border-radius:8px;
    display:flex;
    justify-content:space-between;
    align-items:center;
}

.delete-btn{
    background:red;
    color:white;
    border:none;
    padding:6px 10px;
    border-radius:5px;
    cursor:pointer;
}
#searchExpense{
    width:100%;
    padding:12px;
    margin:20px 0;
    border:1px solid #ccc;
    border-radius:8px;
    font-size:16px;
}
#filterCategory{
    width:100%;
    padding:12px;
    margin-bottom:20px;
    border:1px solid #ccc;
    border-radius:8px;
    font-size:16px;
}
.edit-btn{
    background:#28a745;
    color:white;
    border:none;
    padding:6px 10px;
    border-radius:5px;
    cursor:pointer;
    margin-right:8px;
}

.edit-btn:hover{
    background:#218838;
}
.dashboard{
    display:grid;
    grid-template-columns:repeat(2,1fr);
    gap:15px;
    margin:20px 0;
}

.card{
    background:#0077b5;
    color:white;
    padding:20px;
    border-radius:12px;
    text-align:center;
    box-shadow:0 5px 10px rgba(0,0,0,0.2);
}

.card h3{
    margin-bottom:10px;
    font-size:18px;
}

.card h2{
    font-size:28px;
}
#expenseChart{
    margin-top:30px;
    max-width:100%;
}
#expenseChart{
    margin-top:30px;
    width:100%;
    max-width:500px;
    display:block;
    margin-left:auto;
    margin-right:auto;
    border:2px solid #ddd;
    border-radius:10px;
    padding:10px;
}
#darkModeBtn{
    width:100%;
    margin-bottom:20px;
    background:#222;
}

.dark{
    background:#1e1e1e;
}

.dark .container{
    background:#2c2c2c;
    color:white;
}

.dark input,
.dark select{
    background:#444;
    color:white;
    border:1px solid #666;
}

.dark li{
    background:#444;
    color:white;
}

.dark h1,
.dark h2,
.dark h3{
    color:white;
}