.roi-wrapper {
    max-width: 900px;
    margin: 40px auto;
    font-family: -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', sans-serif;
    color: #e0e0e0;
}

.roi-header {
    margin-bottom: 30px;
}

.roi-title {
    font-size: 32px;
    font-weight: 800;
    color: #fff;
    margin: 0 0 8px;
}

.roi-subtitle {
    font-size: 15px;
    color: #8888aa;
    margin: 0;
}

.roi-card {
    background: #12121f;
    border: 1px solid #2a2a45;
    border-radius: 16px;
    overflow: hidden;
}

.roi-card-header {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 24px 30px;
    border-bottom: 1px solid #2a2a45;
}

.roi-card-icon {
    width: 48px;
    height: 48px;
    background: rgba(74, 125, 255, 0.1);
    border: 1px solid rgba(74, 125, 255, 0.2);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    flex-shrink: 0;
}

.roi-card-title {
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    margin: 0 0 4px;
}

.roi-card-desc {
    font-size: 13px;
    color: #8888aa;
    margin: 0;
}

.roi-card-body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
}

@media (max-width: 700px) {
    .roi-card-body {
        grid-template-columns: 1fr;
    }
}

.roi-inputs {
    padding: 30px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.roi-field {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.roi-label {
    font-size: 14px;
    font-weight: 500;
    color: #c0c0d0;
}

.roi-input-wrap {
    position: relative;
    display: flex;
    align-items: center;
}

.roi-input-icon {
    position: absolute;
    left: 14px;
    font-size: 16px;
    color: #666680;
    pointer-events: none;
}

.roi-input {
    width: 100%;
    padding: 14px 16px 14px 44px;
    background: #0a0a14;
    border: 1px solid #2a2a45;
    border-radius: 10px;
    color: #fff;
    font-size: 16px;
    font-weight: 500;
    outline: none;
    transition: border-color 0.2s;
}

.roi-input:focus {
    border-color: #4a7dff;
}

.roi-input::placeholder {
    color: #555570;
}

.roi-results {
    padding: 30px;
    background: #0d0d1a;
    border-left: 1px solid #2a2a45;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

@media (max-width: 700px) {
    .roi-results {
        border-left: none;
        border-top: 1px solid #2a2a45;
    }
}

.roi-results-title {
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    margin: 0;
}

.roi-breakeven {
    padding-bottom: 20px;
    border-bottom: 1px solid #2a2a45;
}

.roi-breakeven-label {
    display: block;
    font-size: 13px;
    color: #8888aa;
    margin-bottom: 8px;
}

.roi-breakeven-val {
    display: flex;
    align-items: baseline;
    gap: 6px;
}

#roi-months {
    font-size: 42px;
    font-weight: 800;
    color: #fff;
    line-height: 1;
}

.roi-breakeven-unit {
    font-size: 16px;
    color: #8888aa;
}

.roi-profits {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.roi-profit {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.roi-profit-label {
    font-size: 12px;
    color: #8888aa;
}

.roi-profit-val {
    font-size: 20px;
    font-weight: 700;
    color: #22c55e;
}

.roi-profit-roi {
    font-size: 13px;
    color: #22c55e;
    opacity: 0.8;
}

.roi-profit-val.negative {
    color: #ef4444;
}

.roi-profit-roi.negative {
    color: #ef4444;
}