:root {
    --green-900: #1a4731;
    --green-800: #1e5a3a;
    --green-700: #22703f;
    --green-600: #2d8a4e;
    --green-500: #38a169;
    --green-100: #e6f4ec;
    --green-50: #f0faf4;
    --gray-900: #1a1a2e;
    --gray-600: #4a5568;
    --gray-200: #e2e8f0;
    --white: #ffffff;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--green-50);
    color: var(--gray-900);
    line-height: 1.5;
}

header {
    background: linear-gradient(135deg, var(--green-900), var(--green-800));
    color: var(--white);
    padding: 1.5rem 2rem;
}

.header-content {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header h1 {
    font-size: 1.75rem;
    font-weight: 700;
}

.subtitle {
    opacity: 0.85;
    font-size: 0.95rem;
    margin-top: 0.15rem;
}

#reset-btn {
    background: rgba(255, 255, 255, 0.15);
    color: var(--white);
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: background 0.2s;
}

#reset-btn:hover {
    background: rgba(255, 255, 255, 0.25);
}

main {
    max-width: 1100px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

.section {
    margin-bottom: 2.5rem;
}

.section h2 {
    color: var(--green-700);
    font-size: 1.3rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--green-100);
}

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(440px, 1fr));
    gap: 1.25rem;
}

.card {
    background: var(--white);
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.card-header {
    background: var(--green-700);
    color: var(--white);
    padding: 0.75rem 1.25rem;
    font-weight: 600;
    font-size: 1.05rem;
}

.card-body {
    padding: 1.25rem;
}

.field {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.field label {
    font-size: 0.9rem;
    color: var(--gray-600);
    flex-shrink: 0;
    margin-right: 1rem;
}

.field input {
    width: 130px;
    padding: 0.45rem 0.65rem;
    border: 1px solid var(--gray-200);
    border-radius: 6px;
    font-size: 0.95rem;
    text-align: right;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.field input:focus {
    outline: none;
    border-color: var(--green-600);
    box-shadow: 0 0 0 3px rgba(45, 138, 78, 0.15);
}

.calculated {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px dashed var(--gray-200);
}

.calc-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.4rem 0.65rem;
    border-radius: 4px;
    margin-bottom: 0.25rem;
    background: var(--green-100);
}

.calc-label {
    font-size: 0.85rem;
    color: var(--gray-600);
}

.calc-value {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--gray-900);
}

.revenue-row {
    margin-top: 0.35rem;
    background: var(--green-800);
}

.revenue-row .calc-label {
    color: rgba(255, 255, 255, 0.85);
}

.revenue-row .calc-value {
    color: var(--white);
    font-size: 1.05rem;
}

.commission {
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px dashed var(--gray-200);
}

.commission-header {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--green-700);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    margin-bottom: 0.35rem;
    padding-left: 0.65rem;
}

.commission-total-row {
    margin-top: 0.35rem;
    background: var(--green-700);
}

.commission-total-row .calc-label {
    color: rgba(255, 255, 255, 0.85);
}

.commission-total-row .calc-value {
    color: var(--white);
    font-size: 1.05rem;
}

.subtotal-value.commission-highlight {
    color: var(--green-700);
}

.subtotals {
    margin-top: 1.25rem;
    background: var(--white);
    border-radius: 8px;
    border-top: 3px solid var(--green-600);
    padding: 1rem 1.25rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.subtotals h3 {
    font-size: 0.95rem;
    color: var(--green-700);
    margin-bottom: 0.75rem;
}

.subtotal-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.subtotal-item {
    display: flex;
    flex-direction: column;
}

.subtotal-label {
    font-size: 0.8rem;
    color: var(--gray-600);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.subtotal-value {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--gray-900);
}

.subtotal-value.revenue {
    color: var(--green-700);
}

.department-total {
    background: linear-gradient(135deg, var(--green-900), var(--green-800));
    color: var(--white);
    border-radius: 8px;
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1rem;
}

.dept-label {
    font-size: 1.15rem;
    font-weight: 600;
}

.dept-value {
    font-size: 2rem;
    font-weight: 800;
}

footer {
    text-align: center;
    padding: 2rem 1rem;
    color: var(--gray-600);
    font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 960px) {
    .cards {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 1.3rem;
    }

    .header-content {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }

    main {
        padding: 1.25rem 1rem;
    }

    .field {
        flex-direction: column;
        align-items: flex-start;
    }

    .field input {
        width: 100%;
        margin-top: 0.35rem;
    }

    .subtotal-grid {
        gap: 1rem;
    }

    .department-total {
        flex-direction: column;
        text-align: center;
        gap: 0.5rem;
    }

    .dept-value {
        font-size: 1.5rem;
    }
}

/* Print */
@media print {
    header {
        background: none;
        color: var(--gray-900);
        border-bottom: 2px solid var(--gray-900);
    }

    #reset-btn {
        display: none;
    }

    .card {
        box-shadow: none;
        border: 1px solid var(--gray-200);
    }

    .card-header {
        background: none;
        color: var(--gray-900);
        border-bottom: 1px solid var(--gray-200);
    }

    .revenue-row {
        background: var(--green-100);
    }

    .revenue-row .calc-label,
    .revenue-row .calc-value,
    .commission-total-row .calc-label,
    .commission-total-row .calc-value {
        color: var(--gray-900);
    }

    .commission-total-row {
        background: var(--green-100);
    }

    .department-total {
        background: none;
        color: var(--gray-900);
        border: 2px solid var(--gray-900);
    }

    body {
        background: white;
    }
}