.calc-panel {
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem;
}

.calc-layout {
    display: flex;
    gap: 3rem;
}

@media (max-width: 850px) {
    .calc-layout {
        flex-direction: column;
    }
}

.calc-sidebar {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.calc-main {
    flex: 2.5;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* Inputs */
.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.input-group label {
    font-size: 0.9rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
}

.input-group input {
    background: rgba(0,0,0,0.3);
    border: 1px solid rgba(255,255,255,0.1);
    color: white;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.1rem;
    outline: none;
    transition: border-color 0.2s;
}

.input-group input:focus {
    border-color: #38bdf8;
}

.highlight-group {
    background: rgba(244, 63, 94, 0.05);
    padding: 1rem;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(244, 63, 94, 0.2);
}

.highlight-group label {
    color: #f43f5e;
}

.highlight-group input:focus {
    border-color: #f43f5e;
}

.note {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.6);
    line-height: 1.4;
    margin-top: 0.5rem;
}

.note strong {
    color: #f43f5e;
}

/* Results */
.results-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 1rem;
}

.result-box {
    background: rgba(0,0,0,0.2);
    border: 1px solid rgba(255,255,255,0.05);
    padding: 1.5rem 1rem;
    border-radius: var(--radius-sm);
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.total-box {
    background: rgba(56, 189, 248, 0.1);
    border-color: rgba(56, 189, 248, 0.2);
}

.result-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
}

.result-val {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
}

.highlight-green {
    color: #22c55e;
}

.highlight-blue {
    color: #38bdf8;
}

/* Chart */
.chart-container {
    flex: 1;
    min-height: 400px;
    background: rgba(0,0,0,0.2);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    border: 1px solid rgba(255,255,255,0.05);
    position: relative;
}