:root {
    --gold: #D4AF37;
    --dark-bg: #0a0c10;
    --card-bg: #161b22;
    --text-main: #ffffff;
    --text-dim: #8b949e;
    --success: #238636;
    --danger: #da3633;
}

body { background-color: var(--dark-bg); color: var(--text-main); font-family: 'Montserrat', sans-serif; margin: 0; padding: 40px 20px; display: flex; justify-content: center; }
.container { width: 100%; max-width: 1000px; }
header { text-align: center; margin-bottom: 40px; }
header h1 { letter-spacing: 10px; color: var(--gold); margin: 0; }
.balance-box { background: linear-gradient(135deg, var(--card-bg) 0%, #1c2128 100%); padding: 30px; border-radius: 20px; border: 1px solid rgba(212, 175, 55, 0.3); text-align: center; margin-bottom: 30px; }
.balance-box h2 { font-size: 3rem; margin: 10px 0 0; color: var(--gold); }
.input-group { display: grid; grid-template-columns: 2fr 1fr 1fr auto; gap: 15px; margin-bottom: 30px; }
input, select, button { padding: 15px; border-radius: 10px; border: 1px solid #30363d; background: var(--card-bg); color: white; outline: none; }
button { background: var(--gold); color: black; font-weight: bold; cursor: pointer; border: none; transition: 0.3s; }
button:hover { filter: brightness(1.2); }
.table-container { background: var(--card-bg); border-radius: 20px; overflow: hidden; border: 1px solid #30363d; }
table { width: 100%; border-collapse: collapse; }
th { background: rgba(255, 255, 255, 0.05); padding: 20px; text-align: left; color: var(--gold); font-size: 0.8rem; }
td { padding: 20px; border-bottom: 1px solid #30363d; }
.income-label { color: var(--success); font-weight: bold; }
.expense-label { color: var(--danger); font-weight: bold; }
.result-row { background: rgba(212, 175, 55, 0.05); color: var(--gold); font-weight: bold; font-size: 0.9rem; }