:root {
    --br-bg-primary: #0a0a0a;
    --br-bg-secondary: #141414;
    --br-border: #2a2a2a;
    --br-text-main: #f0f0f0;
    --br-text-muted: #888888;
    --br-accent: #d4af37; /* Luxury Gold */
    --br-transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.brorooms-calc-container {
    font-family: 'Inter', sans-serif;
    background: var(--br-bg-secondary);
    border: 1px solid var(--br-border);
    border-radius: 12px;
    padding: 40px;
    max-width: 500px;
    margin: 40px auto;
    color: var(--br-text-main);
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
}

.calc-header {
    text-align: center;
    margin-bottom: 30px;
}

.calc-icon {
    color: var(--br-accent);
    margin-bottom: 15px;
}

.calc-header h2 {
    font-size: 24px;
    font-weight: 600;
    margin: 0 0 5px 0;
    letter-spacing: -0.5px;
}

.calc-header p {
    color: var(--br-text-muted);
    font-size: 14px;
    margin: 0;
}

.calc-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.input-group label {
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--br-text-muted);
}

.input-group input, 
.input-group select {
    background: var(--br-bg-primary);
    border: 1px solid var(--br-border);
    color: var(--br-text-main);
    padding: 14px 16px;
    border-radius: 6px;
    font-size: 16px;
    outline: none;
    transition: var(--br-transition);
    font-family: inherit;
}

.input-group input:focus, 
.input-group select:focus {
    border-color: var(--br-accent);
    box-shadow: 0 0 0 1px var(--br-accent);
}

.calc-btn {
    background: var(--br-text-main);
    color: var(--br-bg-primary);
    border: none;
    padding: 16px;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--br-transition);
    margin-top: 10px;
}

.calc-btn:hover {
    background: var(--br-accent);
    color: #fff;
}

.calc-results {
    margin-top: 30px;
    padding-top: 30px;
    border-top: 1px dashed var(--br-border);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.calc-results.hidden {
    display: none;
    opacity: 0;
    transform: translateY(10px);
}

.result-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 15px;
    font-size: 15px;
}

.result-divider {
    height: 1px;
    background: var(--br-border);
    margin: 15px 0;
}

.total-row {
    font-size: 18px;
    font-weight: 600;
}

.val.accent {
    color: var(--br-accent);
}

.disclaimer {
    font-size: 11px;
    color: var(--br-text-muted);
    text-align: center;
    margin-top: 20px;
}